Author: Richie McCarthy

Sustainability initiative trialed for trade shows


In a response to tackling sustainability, Roadstone has implemented a new initiative for trade shows.

Following a successful trial at Cork Summer show, Roadstone will no longer offer paper based product brochures at trade shows.

An option will now be provided for downloading brochures via QR code.

Customer and staff response at the recent show was very positive.

This is a positive step in terms of sustainability, and reducing unnecessary waste.

Garden Design Day with Peter Donegan at Cork Summer Show

Roadstone Retail is offering free garden consultations with Peter Donegan, Garden designer from DIY SOS, at Cork Summer show on Saturday and Sunday June 18/19.

Call now to book your free consultation on 021 4800118. Spaces are limited numbers.

We will also have:
• Special offers and discounts on the day

Concrete in warm weather guidelines

When concrete is mixed, transported, and placed under hot weather conditions such as high ambient temperature, low humidity, solar radiation, or strong wind, it is important to know what effects these environmental factors can have on the fresh and hardened concrete properties and what precautionary measures are required in the construction operation to prevent damage occurring to the concrete.

Definition of Hot Weather

Hot weather is any combination of the above which impair the quality of the fresh or hardened concrete and/or cause detrimental results. Hot weather concrete problems generally occur during the summer season. Thermal shrinkage is more severe in the spring and autumn (temperature differential).  When air temperatures are identical, a calm, humid day is less severe than a dry, windy, sunny day.

• High ambient temperature
• Solar radiation
• Low relative humidity
• Wind velocity
• High concrete temperature

Potential Problems in Hot Weather – Fresh Concrete

• Increased water demand
• Increased loss of workability with the tendency to add water at the job site
• Increased rate of setting and hardening, resulting in difficult handling and finishing with a risk of cold joints
• Increased potential for plastic shrinkage cracking
• Difficulty in controlling entrained air content.

Potential Problems in Hot Weather – Hardened Concrete

• Potential decrease in 28 day and later age strengths
• Increase in drying shrinkage and thermal cracking
• Increase in permeability
• Reduction in durability
• Difficulty in controlling entrained air content

Avoiding Potential Problems

• Protect concrete against moisture loss during placement and particularly curing period
• Always cure concrete immediately and fully
• Order the correct concrete mix at adequate workability for the job in hand
• Dampen sub-grade before concreting begins
• Plan the work to avoid peak temperatures

Roadstone continues support of DIY SOS

concrete brick, paving slab, paving flag, grey paving

Roadstone is proud to support Series 2 of DIY SOS: The Big Build Ireland, as a Main Supplier.

The four part series will see families across the country receive life changing support from the DIY SOS team in just 9 days.

From entire house renovations to a complete new build on a green field site, the 4 episodes demonstrate the greatest of human kindness and community spirit.

Donating products and technical assistance to these projects has been a privileges and something Roadstone is proud to be associated with.

Congratulations to all involved and to all of the volunteers, tradesmen and suppliers who made it all happen.

Roadstone wins at the Irish Concrete Society Awards

The Irish Concrete Society’s 39th Annual Awards Evening took place at the Clayton Hotel, on the 26th March 2022, Established in 1977, the prestigious Annual Awards are a celebration of excellence in design and construction in Concrete and acknowledge construction achievements in which concrete, in any form, contributes significantly to the built environment.

This year Roadstone was very successful with the Rose Fitzgerald Kennedy Bridge winning in the Infrastructure Category and the Skate Park and Plaza at Le Fanu, Ballyfermot winning the Elemental Category and was also declared the Overall Winner.

The Skate Park and Plaza provides a much-needed space for local youths to practice with state-of-the-art facilities. Careful consideration of the concrete mix was essential to allow for both the concrete placement and finishing operations to be completed in a timely manner and crucially adhere to a finished concrete tolerance of less than 2mm.

Roadstone to exhibit at Self Build Dublin

Roadstone is exhibiting at the Self Build Show in Citywest, 11th – 13th March.

Visit the stand to find out more about our range of Paving, Walling and Roof Tiles, along with innovative building solutions including the new FlowPlus cementitious Floor Screed.

Technical staff will be on hand to answer any questions you might have on your project, and the complete Roadstone product range.

Get a quote from our admin team, who will be happy to guide you through the process of costing your requirements.

Live seminars

Two seminars will be presented by Roadstone Technical Manager; Thomas Holden. The seminars will focus on Floor Screed Design and Specification, and will present an opportunity to learn in depth about the topic, followed by a Q+A session. Thomas will also be available on the stand to answer any further queries.

Seminar times

Friday 11.30am

Saturday 1.30pm

Roadstone exhibits at RIAI conference

Roadstone will exhibit at the Royal Institute of the Architects of Ireland (RIAI) conference exhibition this week on Wednesday and Thursday in the RDS.

Come along to the stand to learn about FlowPlus Cement Liquid Floor Screed and the full technical support offering provided in collaboration with ARDEX Group

Technical staff will be on hand to answer all questions and to offer advice on potential projects.

Forticrete masonry seminar launches on Roadstone LEARN

A new online CPD has been developed to provide guidance around the use of Forticrete masonry and its range of Colours, textures, shapes and sizes.

The Seminar can be found on Roadstone LEARN, a dedicated online CPD platform.

During the  seminar you will also learn about the importance of Co-ordinated design and design considerations to include SR 325.

The importance of movement joints, mortar selection and durability, and Finally, certification and site handling.

Enroll now here


In a sign of support for the building industry, An Taoiseach paid a visit to Roadstone Retail in Classis to open a new display area for the shop.

The new display features a selection of natural and block paving, decorative stone, walling, roof tiles and a range of building materials to include concrete, blocks and stone.

Pictured L-R: Charlotte Hurley, Tim O’Mahony, Seamus O’Leary, Henry Adams, Niall Midleton, DJ Hurley, An Taoiseach Michael Martin, Cian Walsh, Pat Lucey, Ray Hayes, Martin O’Leary, David Lucey

Roadstone supports DIY SOS: The Big Build, Ireland

Roadstone is proud to be supporting DIY SOS: The Big Build, Ireland again this year.

Four new shows will see the Roadstone team travel from Dublin to Kildare, and  Wexford to Waterford.

We have wrapped up the first build with The Parsons family in County Meath and are preparing for our next adventure to New Ross.

The series is due to air on RTE in November and will feature a range of Roadstone products from paving, walling and roof tiles, to concrete, stone and blocks.

DIY SOS is a wonderful project to be involved with, changing the lives of those whom need it most.

Well done to all involved in the series.

Roadstone commits to building an inclusive workplace

A message from MD Larry Byrne

I am proud to have signed up on behalf of Roadstone to the new @Business in the Community Ireland #ElevatePledge to promote inclusion in the workplace.

By signing up to this Pledge, we commit to measuring and recording the diversity profile of our workforce, taking concrete actions to improve diversity and inclusion and reporting on this on an ongoing basis. We are elevating inclusion as a key priority.

Today we are committing to building inclusive workplaces that reflect all of our society, starting now.

For more information –

Launch of Concrete Specification seminar

The latest edition to Roadstone’s online learning platform is a seminar on Concrete Specification and solutions.

This is an opportunity to learn about the specification of concrete and practical solutions to design requests.

The webinar will address the specification of concrete in Ireland, on-site testing, finishes and mix types.

Enrol now and take the seminar in your own time at


BIM content can be downloaded through the Bimstore portal below.

Here you can browse Roadstone tailored BIM content ready for specification.

Further BIM content is currently in development. If you would like to enquire about specific content that is not presented, please email

Quarry water is much colder than rivers, lakes or the sea – you could die from ‘Cold Shock’ in less than 2 minutes



Cold shock can cause you to gasp and drown immediately or can lead to hypothermia, making it very hard to breath. Assuming you survive the cold shock, the drop in temperature causes finger stiffness (making it difficult to climb out), reduced coordination (making it difficult to swim/tread water) and general muscle weakness. It is impossible to help yourself. If cold shock and the reduced physical capabilities don’t result in drowning, hypothermia may kill you.

Quarries are dangerous:

  • Deep water may contain hidden currents or submerged plants which can drag you under
  • Submerged abandoned machinery/car wrecks which you can impale yourself on if jumping in
  • Underwater ledges/ recesses where you can become trapped
  • Dead animals/excrement cause disease
  • Pollution/rubbish causing eye and skin irritations, stomach problems, fungal infections and rashes
  • Poisonous/toxic algae

Christmas closure

Roadstone wishes to notify all customers and suppliers of our holiday arrangements for the Christmas period.  All locations will close on Thursday December 23rd and will reopen on Wednesday January 5th 2022.

We would like to take this opportunity to wish you, your family and colleagues a very Happy Christmas and a prosperous New Year.

Roadstone launches Floor Screeds webinar

floor screed

LEARN about Floor Screeds, design and specification with the latest webinar from Roadstone.

This seminar will guide you through floor screed options and applications.

You will discover more about important design and specification considerations, and the types of screed construction and best practice.

There is a specific look at both cementitious and calcium-sulphate based screeds, along with a case study to help demonstrate the product.

The webinar is free to take and is available on demand, meaning you can take it at a time that suits you.

To Enroll now for free visit –

Roadstone LEARN is a digital platform which offers a selection of CPD seminars that address key topics within the building regulations, as well as important technical advice on products and standards.

Roadstone launches NZEB online seminar

The latest installment from Roadstone LEARN, Roadstone’s online seminar platform, is a seminar that looks at NZEB and Part L compliance.

The recently updated TGD L 2019 contains implications for all of those involved in the building of dwellings.

NZEB brings new requirements, and a new standard that must be met regarding energy conservation.

This seminar will provide you with:

  • Technical knowledge as well as solutions.
  • An animated case study
  • Cost savings accrued by doing so.

A CPD certificate will be made available for download once the course has been completed.

Technical support and guidance is available directly from Colin Doyle, Roadstone’s Technical Support Engineer by emailing

The platform is free to use and can be accessed from the Roadstone website or through

Roadstone launches online seminar platform

online seminars, cpd

Roadstone is delighted to launch Roadstone LEARN, an online seminar platform offering a range of up to date presentations on the most important aspects of the Building Regulations and Technical Specification regarding products.

The platform is free to use and can be accessed from the Roadstone website or through


Available seminars

SuDS and Paving

Masonry Essential Updates Pt.1

Masonry Essential Updates Pt.2

Quarry Operations and Material Standards

A Guide to Keltstone Walling, Product and Specification


Coming soon

NZEB and Part L compliance

Joseph Hogan’s becomes Roadstone Ltd.

Roadstone is delighted to announce that from June 1st 2019, Joseph Hogan’s at Ballylin, Foynes, Co. Limerick, will officially operate as Roadstone Ltd.

Operations at the location will continue as normal with the supply of blocks, concrete and aggregates and agricultural lime.

Should you have any projects you would like to discuss please contact John McDermott, the local area Sales Representative for Roadstone Ltd. He can be contacted on 086 258 3103 or at

The office numbers and extensions will remain the same. For any further information please phone 069 65550.

Roadstone wins at the Irish Concrete Society Awards

architectural concrete, fair faced concrete

Roadstone was delighted to win an award as major supplier to The Cliffs of Moher Coach Park Reception Building at the recent Irish Concrete Society Awards.

The design and construction of the building demonstrates a fantastic visual and practical approach to building with concrete.

A quote from the jury describes the building very well:

“In the sensitive landscape along the coast of Clare to which visitors flock to view the Cliffs of Moher, this project seeks to minimise its visual impact on the setting, creating a sunken enclosure of concrete, incorporating reception facilities for the various coach companies serving the site.

Concrete is cleverly used to hold back the earth enabling the necessary accommodation to be concealed in a mounded form. Benefiting from the inherent strength, robustness and resilience of concrete, its comprehensive use seems particularly appropriate here.

Carefully detailed fair-faced concrete is used extensively in the floors, walls and ceilings both internally and externally, treated with various finishes from exposed aggregate to highly polished, according to its location. Artificial lighting is hidden in niches carved out of the concrete, whilst canted sky windows are crafted to allow daylight into the concealed interior.”


Ryan Bros. (Ennis) Ltd. becomes Roadstone Ltd.

Ryan Bros

Roadstone is delighted to announce that from January 1st 2019, Ryan Bros. (Ennis) Ltd. at Toonagh Quarry, Ennis, Co. Clare, will officially operate as Roadstone Ltd.

Operations at the location will continue as normal with the supply of blocks, concrete and aggregates. The retail shop will also continue to supply paving, walling and stone.

Should you have any projects you would like to discuss please contact Derek Power, the local area Sales Representative for Roadstone Ltd. He can be contacted on 086  825 7882 or at

The office numbers and extensions will remain the same. For any further information please phone 065 683 7644.

Roadstone Autumn Seminar Series



Roadstone would like to invite you to attend an upcoming Roadstone CPD accredited seminar in your region.  The seminars will identify some of the key changes to the Irish Building Regulations and present practical and cost-effective solutions that will contribute significantly towards efficient design and construction.

Roadstone is committed to product innovation aimed at providing building solutions to builders, contractors and designers alike.  This includes the development of the Thermal Liteblock system, manufactured in Ireland, providing excellent insulation properties which specifically mitigate heat loss at thermal bridges – a key challenge in the construction industry. The Roadstone Thermal Liteblock is also the only concrete block solution to the thermal bridging requirements of Part L of the Building Regulations.

These seminars will also present and overview of Roadstone solutions to other challenges presented from the building regulations and specifications, including:

  • Concrete to I.S. EN206 + Case studies
  • Paving + Permeable Surfacing Solutions- SuDS
  • Aggregates and Standards
  • Concrete Blocks + Part L-Case Studies

The seminar is a CPD event and will take place in a number of regions over the coming weeks. Our invited audience will be comprised of Contractors, Architects, Engineers, designers and professional representatives from across the sector. This CPD event will include refreshments and an opportunity to network with your colleagues and the Roadstone Commercial Innovation team.

To register your interest please contact –

Date Venue Time CPD SEMINAR Duration
7th November 2018 Hibernian Hotel Mallow 5.30pm • Concrete to I.S. EN206 + Case studies
• Paving + Permeable Surfacing Solutions- SuDS
• Aggregates and Standards
Approx 1 hr 30 mins.  Finger Food + Tea/Coffee available from 5pm
14th November 2018 Athlone Springs Hotel 7.30am • Concrete to I.S. EN206 + Case studies
• Paving + Permeable Surfacing Solutions- SuDS
• Concrete Blocks + Part L-Case Studies
Approx 1 hr 30 Mins.  Breakfast available from 7am
20th November 2018 Tullamore Court Hotel 7.30am • Concrete to I.S. EN206 + case studies
• Paving + Permeable Surfacing Solutions- SUDS
• Concrete Blocks + Part L-Case Studies
Approx 1 hr 30 mins.  Tea/Coffee + pastries available from 7am

Roadstone to exhibit at the National Ploughing Championships


Roadstone will be exhibiting at this years National Ploughing Championships in Screggan, Tullamore.

Our trade stand will feature a number of innovative product displays including SUDs permeable paving and Roadstone’s quick floor Screed. An external area will feature a selection of paving, core gravel stabilising sheets and decorative gravel.

Technical advisors and sales representatives will be on hand to answer queries on a range of product areas including Farmcrete, Grolime, Walling, Roof Tiles and Masonry products.

Come and visit the stand at Block 2 Row 6 Stand 152 for a chance to enter our daily competition for €1,000 of Roadstone products.


Roadstone brand to carry CRH endorsement



Roadstone will now adopt the endorsement line “A CRH Company”, as part of a new company logo.

CRH is the global name of Roadstone’s parent company. CRH was formed in 1970 when Irish Cement and Roadstone merged to become Cement-Roadstone Holdings now known as CRH plc.

CRH is now one of the leading global brands in the building materials industry today. It is recognised for leadership in operational performance, environmental performance, corporate social responsibility, innovative building solutions and sustainable construction.

On a practical level the only change required, will be to update how our company branding appears. In particular, documentation will now bear the new endorsed logo, as will our signage, website, and our vehicle fleet in due course.

Be assured that the company, the products and services we supply, will all remain the same.


concrete truck


About CRH

CRH (LSE: CRH, ISE: CRG, NYSE: CRH) is the leading building materials business in the world, employing c.71,000 people at c.3,200 operating locations in 28 countries. It is the largest building
materials business in North America and in Europe and also has regional positions in Asia.

CRH manufactures and supplies a range of integrated building materials, products and innovative end-toend solutions which can be found throughout the built environment in a wide range of construction projects from major public infrastructure to homes and commercial buildings.

A Fortune 500 company, CRH is a constituent member of the FTSE 100 Index, the EURO STOXX 50 Index, the ISEQ 20 and the Dow Jones Sustainability Index (DJSI) Europe. CRH is ranked among sector leaders by Environmental, Social and Governance (ESG) rating agencies. CRH’s American Depositary Shares are listed on the NYSE.

For more information, please visit:


New to Roadstone: Milan Linear Paving

block paving, linear paving, concrete paving, patio slab

Roadstone is delighted to announce the launch of a new paving range. The Milan Block Paving Range is a linear paving product that is available in 3 colours.

Both charcoal and natural are available in a smooth or textured finish, while a white granite product is available only in a textured finish.

Paving sizes available include 480mm X 120mm, and 360mm X 120mm

The Milan Block Paving range is designed to ideally suit patios, gardens, paths and a range of commercial applications.

To view the full range visit our Paving Product Selector:

For technical specification visit the Milan Paving product page:

Roadstone wins at the Irish Concrete Society Awards

concrete design

The Vaulted House

Roadstone is delighted to have won two significant awards at the Irish Concrete Society Awards, which took place on the 24th of March in the Clayton Hotel, Burlington Road, Dublin.

The Awards recognise excellence in both design and construction of concrete and are adjudicated by a distinguished, independent jury of industry professionals. The main awards jury reviewed a total of twenty-seven projects nominated in three categories.

Roadstone was firstly presented with an award for the supply of concrete to the landmark Páirc Uí Chaoimh Stadium in Cork, which was the Infrastructure Category Winner.

On the project the jury commented, “This is a project of scale and impact and it dominates the local area. The vertical concrete elements and the excellent precast cladding panels captured the jury’s attention. There is also the row after row of precast concrete seating and terraces all completed to a high standard. This concrete tiered infrastructure surrounding is a worthy winner”.

Páirc Uí Chaoimh

The second award was for the supply of concrete to The Vaulted House, Dublin, which was also the Overall Category Winner.

Marking this prestigious award the jury had the following to say about the project, “The terrazzo flooring in the existing building may have been the spark that set the client, designers and contractors down a road that delivered an exceptional building that has concrete features throughout. The client was brave and gave a complete vote of confidence to the design team and the contractor.

There are many architectural exposed concrete elements that could have been submitted, fair faced walls, columns, soffits, and beams; the dramatic board marked beams internally and externally; the extensive use on terrazzo on the floors and stairs. The concrete theme continued into the garden with a board marked concrete shed, planter boxes, barbeque and even an in situ concrete table. Even a concrete worktop and sink.

The vaulted concrete ceiling could well have been overpowering and cold. However, the attention to detail in the design and the craftwork and passion from the contractor have resulted in an exceptional feature in a very beautiful modern home”.

Congratulations to all involved in these fantastic projects.


The future of rainwater management – Irish Building Magazine

permeable paving

The following article first appeared in Irish Building Magazine and can be downloaded HERE


The drainage solution of the future, a sustainable urban drainage system (SuDS) is an alternative to the traditional pipes, gullies and culverts approach to a development and drainage strategy. “If you could imagine a green field,” says Michael Vaughan of Roadstone, “you’d have about a 10% water runoff. A built-up, hard landscape area could have up to 50% runoff. The sheer amount of runoff water you have to deal with is immense when you are constructing high-density developments.” Managing the water on site, minimising its runoff, infiltrating the water for passive treatment and controlling its discharge rate are the key elements of this kind of drainage. The Roadstone Aquaflow paving system provides a practical solution to SuDS.

Michael Vaughan says that the fact of the matter is that while there are drainage systems in place throughout the country, we can’t keep feeding into them forever more. “I think this is an issue the entire country will be dealing with going forward. The way we address this issue is by dealing with the water close to its source,” he explains. By doing that, we can use SuDS paving which allows the water to filter through the paving into a sub-structure, which is designed, and you have controlled release of the water back into the ground.” The Roadstone Aquaflow SuDS allows rainwater to infiltrate through a permeable block paved surface into a unique sub-base before being released in a controlled manner into the ground or storage tanks for reuse or delayed discharge. The system is capable of handling rainfall up to 4,500mm per sq.m per hour.

The water leaving the Aquaflow system is cleaned by filtration and microbial action and can be used for secondary non-potable uses such as flushing toilets and watering soft landscapes. A further advantage of Roadstone’s Aquaflow system is that roof water can be drained directly into the sub-base through a dispersion chamber. A good example of the efficient use of SuDS is the 21,000 sq.m car park with a SuDS system used by Kildare County Council offices “It takes the carpark surface water and filtrates it, then transfers it into storage tanks to be used as non-potable water in the building itself,” says Michael.

Now is the time to take notice of water management systems, according to the experts at Roadstone. “We have to look to the future, we have to put rain water management on a sustainable footing.” says Michael Vaughan. “We can’t keep putting water through existing systems because the capacity will keep increasing and increasing. We have to manage the possibility of flooding also, which happens throughout the country each year and this is one element that would help in managing it.”

The Roadstone Aquaflow paving system is ideal for new builds, and SuDS is something we will likely see as a requirement in new developments of the future, says Michael Vaughan.

“Roadstone are a one-stop shop for SuDS. Roadstone can provide a full design service for your Aquaflow paving system issuing a site specific Aquaflow design including construction depths, invert levels, restraints, drainage and any other design elements.”

Roadstone have shown full commitment to SuDS paving solutions by providing a SuDS equivalent for all their popular standard paving ranges. For example Roadstone Castlestone paving range has an Aquaflow Castlestone permeable paving equivalent. Permeable paving is available in a full range of colours including Roadstones popular blended colours. Other permeable finishes are available such as permeable porous asphalt in the form of the “Duraflow” product, permeable “no fines concrete” and “core gravel sheets” complete the permeable range.


  • Roadstone designed, Formpave Aquaflow system
  • 21,000m² car park
  • ML Aquaflow Paving Blocks and inbitex membrane in a 350mm deep sub-base (specification graded stone with 30% voids to maximize storage) over SC membrane to form a tanked system
  • Use of mains water reduced by incorporating filtered rainwater from the car park, which is stored to overhead storage tanks for non-potable water use.


  • New adjacent 5,000m² asphalt carpark partially drains into the permeable paving and is accommodated by the existing system
  • Áras Chill Dara reported no standing water on the car-park even after major rain events, ensuring cleaner surfaces
  • Aquaflow ML Paving in good condition both visually and structurally
  • Today, the system is fully operational and providing water to overhead storage tanks for non-potable building services use as required



Interest grows in Roadstone SuDS systems – Construction Industry News

permeable paving, block paving

The following article first appeared in Construction Industry News and can be downloaded HERE


Across the country water drainage and sewage systems handle the water runoff from large scale developments. As the scale of development increases in the coming years, the problem of surface water management will be greatly exacerbated.

According to Michael Vaughan, Roadstone National Sales Manager Architectural Products, an undeveloped site has a surface water run-off of 10%, while a high density development can experience a run-off of up to 55%.

The challenge of managing surface water run-off is being met by an increased use of SuDS (Sustainable Urban Drainage Systems) or permeable paving systems. One of the key principles of SuDS is reducing water quantity thus dealing with surface water at the source reduces the effects of urbanisation and the impact of localised flooding.

Michael says Roadstone has been receiving an increased number of enquiries from across the country in recent times about Roadstone’s Aquaflow (SuDS) range of paving.

Roadstone Aquaflow system allows rain to infiltrate through a permeable block paved surface into a unique sub-base before being released in a controlled manner into the ground or into main sewers or water courses. The system is capable of handling rainfall of 4500mm per sq. m per hour.

The water leaving the Aquaflow system is cleaned by filtration and microbial action and can also be stored in an integrated tanking system for secondary non-potable uses such as flushing toilets. watering soft landscapes and firefighting. A further advantage of Roadstone’s Aquaflow system is that roof water can be drained through an aquaflow distribution tank directly into the sub-base.

Roadstone can provide all the materials necessary to facilitate the design and construction of the Aquaflow  permeable paving system. Michael explains that the Roadstone team like to get involved in a project as early as possible so the project team can avail of their design and technical expertise.

In 2005, Roadstone designed the Formpave Aquaflow system to facilitate a 21,000-sq m car parking space at Aras Chill Dara, the then new Kildare County Council offices. Over the years,
Aras Chill Dara reported no standing water on the car-park, even after major rain events, ensuring cleaner surfaces. Twelve years on the Aquaflow Paving is still performing its water management function.


Developments in Roadstone’s Thermal Liteblock – Irish Building magazine

Part L, Liteblock

The following article first appeared in the Irish Building magazine and can be downloaded HERE

Award Winning Thermal Liteblock

Alan Lowe, Roadstone’s Senior Technical Manager discusses the new developments regarding Roadstone Thermal Liteblock, their large range of thermally modeled construction details and the features and benefits of the Thermal Liteblock which is available from Roadstone outlets nationwide.

Roadstone’s multi-award winning Thermal Liteblock is manufactured by Roadstone in Ireland. Thermal Liteblock is used at key junctions to provide reductions in thermal bridging and heat loss. It has thermal conductivity values less than 0.33 W/mK which is a 300% improvement over standard concrete blocks. This is achieved using a specific mix design which includes lightweight aggregates. This mix produces a robust concrete block with excellent insulation properties while maintaining structural strength and allowing for traditional construction methods to be used. Thermal Liteblock can be used with traditional mortars and renders and is compatible with standard concrete fixings.

By 2016 Thermal Liteblock was established in the market, winning national awards. Speaking to Irish building magazine, Alan says Thermal Liteblock has proved to be a very successful product, being specified by designers on a wide range of domestic, commercial and public projects. He describes Roadstone’s most recent addition to the Thermal Liteblock range, developing a higher strength Thermal Liteblock: “We have recently developed a 13N/mm² Thermal Liteblock. The building regulation minimum standard is 7.5 N/mm² for the compressive strength of standard and lightweight concrete blocks. The 13 N/mm² Thermal Liteblock is suitable where higher design strength is required, such as in commercial developments where compliance with NZEB (Near Zero-Energy Buildings) is required. Thermal Liteblock is now available in a range of strengths, sizes and configurations providing far greater design and construction flexibility for our customers.”

The Roadstone Thermal Liteblock system combines the Roadstone Thermal Liteblock with the Roadstone Concrete Block range, which when used in accordance with the Acceptable Construction Details (ACDs), achieves Psi values equal to or better than the standards set out in TGD Part L 2011. Roadstone have thermally modelled all relevant details in Appendix D of TGD L 2011. From this extensive research, Roadstone are now in a position to provide detail solutions that comply fully with Psi value requirements outlined in TGD L 2011 – Appendix D. Roadstone also offers a specialist design service. Alan explains, “If a client comes to us with a project at the design stage or with bespoke details we can engage our design consultants Evolusion Innovation to carry out fully certified y value calculations for the project. From this, we can assist our customers in identifying cost savings and/or enhanced Building Energy Rating (BER) performance. We have over 150 certified thermally modelled details that are available to our customers for incorporation into their projects.”

“We were able to achieve a thermally efficient block and one which meets the robustness, integrity and strength that is required by the Irish and European standards.”

Alan describes how the Thermal Liteblock was originally developed. “Roadstone recognised back in 2013 that Part L of the building regulations had changed the thermal bridging requirements for construction details. We reviewed the Psi value requirements in Part L and examined how we could achieve a more thermally efficient concrete block to achieve compliance. We completed 12 months of Research & Development to manufacture a concrete block with low density and improved thermal performance while maintaining the required structural characteristics of a concrete block.” Speaking of their success, he says, “We were able to achieve a thermally efficient block and one which meets the robustness, integrity and strength that is required by the Irish and European standards.”

Key features and benefits:

  • Reduced Thermal Bridging resulting in reduced heat loss, and lower heating bills.
  • Excellent thermal conductivity (Lambda λ) value less than 0.33 W/mK for masonry block.
  • Robust and durable concrete block with a minimum compressive strength of 7.5N/mm².
  • Suits traditional construction methods familiar to Irish and UK designers and builders.
  • CE marked – manufactured to the requirements of I.S. EN 771-3 to System 2+.
  • Thermal Liteblock is required only in key locations in conjunction with the Roadstone Concrete Block range.
  • The Roadstone Thermal Liteblock system is a very cost effective solution and can result in significant savings in the overall build cost.
  • Improved (y) value calculations are achieved when using the Roadstone Thermal Liteblock system.
  • When a full building specific (y) value calculation is carried out using the Psi Values incorporating the Roadstone Thermal Liteblock, improved (y) value of between 0.03 and 0.06 can typically be achieved.
  • Compliant U-values are achieved without having to provide a cavity in excess of 150mm.
  • Roadstone Thermal Liteblock is unique in colour to enable traceability on site.
  • Photographic recording of the Thermal Liteblock built on site can then form evidence of compliance for the Assigned Certifier, Architects, Engineers and BER assessors.

Thermal Liteblock’s 2016 Awards:

Winner Best Interior Building Product – RIAI Architecture Choice Awards
Winner Best New Product Innovation – Irish Build & Design Awards
Winner Construction Product of the Year – Irish Construction Industry Awards