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SPECIFIER NEWSLETTER – ISSUE 12 – JANUARY 2022

Have you started the year aiming to achieve more sustainability in the projects you work on? Or maybe you feel uncertain about where to start?

Either way, we’ve got you covered. We’ve kicked off 2022 by looking at environmental product declarations (EPDs) and what they are, and we’ll continue to explore them over the coming months.

If you’ve got any burning questions about EPDs, contact us and we’ll try to answer them in future issues of The Build-Up.

Roof garden

What are environmental performance declarations (EPDs)?

An environmental product declaration is an internationally recognised document that communicates environmental impact. They are produced in accordance with relevant standards and should be independently verified. EPDs can be created for products and services of all types, in all areas of life, but there are specific standards and rules covering the creation of EPDs for construction products.

To produce an EPD, life cycle analysis (LCA) is carried out for the product, with assumptions made about the environmental impact at different stages of that life cycle. The EPD document describes and reports that environmental impact, allowing designers, specifiers and other construction professionals to make informed decisions about product choices.

Does having an EPD make a product sustainable?

There is increasing demand for construction products to have EPDs. However, sometimes, there can be a misconception that simply specifying a product that has an environmental product declaration means a ‘sustainable’ choice is being made for the project.

You may have seen or heard people say that the most sustainable building is the one that does not need to be built. The fundamental truth is that processing raw materials and manufacturing construction products has an environmental impact. The first step to minimising the impact of construction projects is therefore to use resources as efficiently as possible.

This means questioning if new construction is necessary, or whether a client’s needs can be met by reusing an existing building. Once that answer is arrived at, design and specification decisions can be made to support longevity and adaptability in the built environment. Ideally, product choices prioritise the efficient use of resources over the long term.

It is key to remember, therefore, that an EPD does not describe whether a product is ‘sustainable’ or not. There is no such thing as a ‘most sustainable’ product. An EPD is a tool that allows materials to be compared, in order that product choices are made to support a construction project’s sustainability goals.

Continue reading…

Polyfoam resource

Specified By

To make specifying our ground floor and flat roof insulation as simple as possible, Polyfoam XPS can now be found on SpecifiedBy, the leading building product research platform. Of course, you can still find all of our products on the Polyfoam website, but SpecifiedBy offers features like side-by-side comparisons of different products, and product searches by specific attributes.

Polyfoam XPS on SpecifedBy

Whether it’s guidance on designing and specifying extruded polystyrene (XPS) insulation, or U-value calculations and condensation risk analyses, we’ve got you covered. Polyfoam XPS’s technical staff have years of experience in the construction industry generally, and insulation manufacturing specifically, and are on hand to offer advice and answer questions at any stage of a project. Contact us through the website or email technical@polyfoamxps.co.uk. 

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POLYFOAM XPS SETS OUT GUIDANCE ON CAVITY WALL INSULATION SOLUTIONS BELOW DPC

Polyfoam boards

A new white paper from Polyfoam XPS aims to provide specifiers and contractors with advice on insulating cavity walls below damp proof course (DPC) level, while guarding against moisture risk.

“Our technical helpdesk regularly gets asked about improving the thermal performance of junctions between ground floors and external walls,” said Rob Firman, Technical and Specification Manager at Polyfoam XPS. “People want a robust and moisture tolerant insulation solution that can be installed below DPC level, and they look to extruded polystyrene (XPS) to provide that solution.”

The recent update to BS 5250, which widened its scope to address moisture in buildings generally, highlighted the increased awareness that better thermal performance must not come at the expense of other risks to the building fabric.

“Specifiers and contractors want to do the right thing and reduce thermal bridging heat losses without risking moisture uptake through the chosen insulation,” Rob Firman continued. “However, we find guidance and support is limited from building warrant providers.”

To address this lack of information, the new white paper provides a comprehensive overview of the areas of building regulations that below DPC insulation must help to satisfy. It looks at the requirement for cavity wall insulation to have BBA certification above DPC, and whether this applies below DPC as well.

Rob added: “The white paper is fully illustrated with junction details for different floor constructions. We’ve also thermally modelled the details provided, to demonstrate the low psi values that the details provide, and to show that they pose no risk of condensation internally.”

Download a copy of the below DPC insulation white paper here. For support in specifying extruded polystyrene insulation in your ground floor, flat roof, or below DPC in a cavity wall, contact us.

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WHAT ARE ENVIRONMENTAL PERFORMANCE DECLARATIONS (EPDS)?

Roof garden

An environmental product declaration, or EPD, is a document that communicates environmental impact.

EPDs are internationally recognised and should be independently verified to ensure they meet the applicable standards. While EPDs can be created for products and services of all types, in all areas of life, there are specific standards and rules covering the creation of EPDs for construction products.

Life cycle analysis’s (LCA) are carried out for construction products, and assumptions are made about the environmental impact at different stages of that life cycle, a EPD is created to describe and report that environmental impact. Designers, specifiers and other construction professionals can then make informed decisions about their product and material choices.

What is the relevant standard for a construction product EPD?

Environmental declarations for construction products are carried out in accordance with EN 15804:2012 Sustainability of construction works. Environmental product declarations. Core rules for the product category of construction products, this standard has been amended twice, most recently in 2019.

Among other things, EN 15804 defines what parameters should be declared and how they should be reported; describes the stages of life cycle assessment; and specifies the quality of data required for reporting.

The six environmental impacts that an EPD reports on are:

  • global warming potential
  • depletion of the stratospheric ozone layer
  • acidification potential of soil and water
  • eutrophication potential
  • formation potential of tropospheric ozone; and
  • abiotic depletion potential.

The full name for an EPD is a ‘Type III environmental product declaration’, where ‘Type III’ refers to the EPD’s environmental data having been quantified according to predetermined parameters based on the ISO 14040 series of standards.

Does having an EPD make a product sustainable?

There is increasing demand for construction products to have EPDs, however, sometimes, there can be a misconception that simply specifying a product that has an environmental product declaration means a ‘sustainable’ choice is being made for the project.

You may have seen or heard people say that the most sustainable building is the one that does not need to be built. The fundamental truth is that processing raw materials and manufacturing construction products has an environmental impact, the first step to minimising the impact of construction projects is therefore to use resources as efficiently as possible.

This means questioning if new construction is necessary, or whether a client’s needs can be met by reusing an existing building. Once that answer is arrived at, design and specification decisions can be made to support longevity and adaptability in the built environment. Ideally, product choices prioritise the efficient use of resources over the long term.

It is key to remember, therefore, that an EPD does not describe whether a product is ‘sustainable’ or not. There is no such thing as a ‘most sustainable’ product. An EPD is a tool that allows materials to be compared, in order that product choices are made to support a construction project’s sustainability goals.

Polyfoam XPS and EPDs

Polyfoam XPS has environmental product declarations for its flooring and roofing insulation products. We partnered with the BRE Global, who produced our Type III EPDs under their programme operatorship. BRE Global’s product category rules were developed in accordance with EN 15804. Our EPDs have been externally verified by an independent third party.

This is the first in a series of blog posts about EPDs. You can keep up to date with all of Polyfoam XPS’s latest blog content by subscribing to the  Polyfoam XPS newsletter, The Build-Up. For copies of our EPDs, visit our technical support page, or contact us to discuss the requirements of your current project.

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POLYFOAM XPS PARTNERS WITH SPECIFIEDBY TO WIDEN PRODUCT INFORMATION AVAILABILITY

Specified By

Polyfoam XPS’s range of extruded polystyrene insulation products for ground floors and flat roofs can now be found on SpecifiedBy, the leading building product research platform for architects and specifiers in the UK.

“Supporting our clients and customers with their digital processes, and engaging with projects at an early stage, has never been more important,” said Rob Firman, Technical and Specification Manager at Polyfoam XPS.

“SpecifiedBy provides well-structured and open data, so joining their comprehensive database of construction products and materials was a natural choice.”

The product information is already available on the Polyfoam XPS website, but including it on SpecifiedBy as well means specifiers can easily do side-by-side comparisons of different products, or search for products by specific attributes.

“Finding, understanding and specifying our products online should be as simple as possible,” added Rob, “so we’re very happy to be working with SpecifiedBy.”

Find products and data from Polyfoam XPS on SpecifiedBy. Read more about Polyfoam XPS’s approach to product data on our blog.

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SPECIFIER NEWSLETTER – ISSUE 11 – DECEMBER 2021

This is the eleventh issue of The Build-Up! While that means we haven’t quite done a full year, the end of the year and the festive period seems like a good time to reflect on the newsletter’s (almost) first birthday, and to thank you for joining us on this journey.

Whether you’ve been reading since issue one or you’ve started today, we appreciate your time and attention. All that remains is for us to wish you a happy and healthy Christmas and New Year period. We’ll be back with issue twelve at the end of January 2022.

UPDATE

Focus on construction products

A big topic this year has been how manufacturers communicate about their construction products, and how information on performance and certification is presented. A few months ago we wrote a blog post on using manufacturers’ data to inform specification, and looked at a couple of different initiatives that will influence the way that manufacturers make data and information available to you as designers and specifiers.
 
One of those initiatives is the Code for Construction Product Information (CCPI). We first wrote about this back in May, and we’ve produced an update blog post to reflect on the subsequent publication of the Code and accompanying guidance.

Getting more from Polyfoam XPS

We usually use this part of the newsletter to feature some aspect of Polyfoam XPS’s technical services. But it’s the end of the year and, let’s face it, we’re all winding down for a well-earned rest! So instead of product ranges and CPD sessions, we would like to wish you all a very MERRY CHRISTMAS.

Design resources

We’re all painfully aware of how commercialised the Christmas season has become, with unrelenting pressure to buy, buy, buy. If you want to do some shopping of a different sort, and browse a range of sustainable construction products that could be used on your next project, why not book an appointment at the EDGE eco product showroom in London?

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CODE FOR CONSTRUCTION PRODUCT INFORMATION – PUBLICATION UPDATE

UPDATE

The Code for Construction Product Information (CCPI) was published in September 2021, following a consultation process.

The Code has been prepared by the Marketing Integrity Group (MIG), which was established by the Construction Products Association (CPA) in response to Dame Judith Hackitt’s report Building A Safer Future.

We first wrote about the Code in May when a draft version was out for consultation. You can read about the background and aims of the Code, together with our original thoughts on it, in our post on ‘what you need to know about the Code for Construction Product Information’. This new blog post updates our thinking following the Code’s publication.

What has changed now the Code for Construction Product Information has been published?

At the time of writing the CCPI – together with supporting guidance and details of the assessment process – has been published. Assessors for the scheme are being recruited. Manufacturers have been invited to express their interest in signing up, but cannot yet be assessed, meaning no company or organisation can claim to be compliant.

The MIG promised that any necessary changes would be made to the CCPI in response to the consultation, but the published version came out just weeks after the consultation report. Any changes seemed to be minimal and appeared not to address legitimate concerns that were raised at the consultation stage.

According to the consultation report, architects and design professionals who responded to the consultation seemed to be broadly in favour of the CCPI. However, it was interesting to note the number of responses that centred on manufacturers offering specific types of information – especially around sustainability and environmental impact.

The objective of the CCPI is not to make manufacturers provide all of the information that design professionals and specifiers want or will find useful. It is to give reassurance that the information they do provide meets the five criteria set out by the Code.

The consultation suggested there is a demand for information on sustainability that is not currently being met. At the present time, therefore, manufacturers would seem likely to benefit more from investing their time and money in providing transparent information to meet that demand, such as in the form of environmental product declarations (EPDs), over pursuing CCPI accreditation.

It will remain interesting to watch the progress of the CCPI as the first adopters sign up and begin the assessment process.

About Polyfoam XPS

The Polyfoam XPS website has information about our complete range of products, and downloads including EPDs, technical documentation and product certification. We also regularly discuss industry issues, standards, and product performance in our blog.

For any questions regarding our product information, to find out more about how we’re engaging with the CCPI, or to discuss how extruded polystyrene could benefit your current project, contact us.

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WHAT DOES BS 5250:2021 SAY ABOUT HYBRID FLAT ROOFS?

What does BS 5250:2021 say about hybrid flat roofs

A hybrid flat roof is the name given to a warm flat roof construction where additional thermal insulation is installed below the roof deck.

Warm roof build-ups work by maintaining the structural deck at (or close to) the building’s internal temperature. Additional insulation below the roof deck changes the relative temperature of the different layers of the build-up, which can introduce unwanted risks.

Those risks can be heightened if the insulation is also installed on the internal side of the layer acting as the AVCL. Introducing extra insulation, especially if it is a different material type to that installed over the roof deck, can change the management of moisture (including the potential for condensation to occur) in the roof. It is therefore appropriate to look at what BS 5250:2021 Management of moisture in buildings says about hybrid roofs.

Why might a hybrid flat roof be constructed on site?

A hybrid flat roof is most likely to occur because there is some restriction on the height of warm roof insulation that can be installed on the flat roof. Theoretically, this shouldn’t occur on a new-build project, though there can be miscalculations with regard to upstand heights or threshold levels.

Whatever the case, the thickness of insulation that can be accommodated is not enough to achieve the required U-value. A solution is therefore sought to accommodate additional insulation below the roof deck.

Where there is a desire to improve the U-value of an existing roof, similar height limitations might apply. Alternatively, there could be a preference to leave the existing roof finish undisturbed, so the option is taken to add insulation below the deck while carrying out internal works. Either way, a hybrid roof is the result.

What factors affect condensation risk in hybrid flat roofs?

A typical warm roof build-up features a structural roof deck with an air and vapour control layer (AVCL), thermal insulation and external waterproofing layer all installed over it.

The AVCL acts to restrict moisture vapour entering the roof structure. Without an AVCL, moisture vapour generated inside the building could move past the insulation layer and come into contact with the cold waterproofing layer. As the air could no longer contain the same quantity of moisture vapour, excess moisture would be deposited as condensation.

The thermal insulation could then get wet, reducing its effectiveness and increasing heat loss from the roof. If the condensation is not able to dry out then the roof structure could be subject to a long-term build-up of moisture that is unseen by building occupants.

In a hybrid roof, adding insulation to the underside of the roof deck acts to decrease the temperature of the deck and the AVCL. The extent to which it does so depends on the relative thicknesses of the warm roof insulation and the ‘hybrid insulation’.

It also depends on the extent to which the additional insulation allows the passage of moisture vapour, either due to its material properties or due to the way it is installed (for example, if poor installation leaves air gaps that allow the movement of warm air past the additional insulation).

What do BS 6229:2018 and BS 5250:2021 say about hybrid roofs?

BS 6229:2018 Flat roofs with continuously supported flexible waterproof coverings – Code of practice acknowledges that hybrid roof build-ups occur, including where thermal insulation is added to an existing roof, or in a roof construction where the waterproofing sits between two insulation layers (as could be the case in an inverted roof build-up where insulation is added below the roof deck).

It says there is “an increased risk of interstitial condensation with a hybrid roof”, and recommends that a full condensation risk analysis is carried out. BS 6229 does not say outright that hybrid roofs are bad practice, but it does make clear that designers “should select the type of flat roof most suitable for the intended building”.

As part of its recent update, BS 5250:2021 Management of moisture in buildings – Code of practice included a new footnote in its table summarising the condensation risk analysis methods appropriate for warm flat roofs.

Footnote B to Table 4 says that condensation risk analysis calculations are required for warm flat roofs “if thermal insulation is split both above and below the deck or AVCL although typically no more than one-third of the thermal resistance should be on the warm side of the AVCL.” The term ‘hybrid flat roof’ is not actually used in the standard.

Polyfoam XPS and hybrid flat roofs

Like the two standards referenced above, Polyfoam XPS acknowledges that hybrid flat roofs do occur and are sometimes unavoidable for a variety of reasons. Nevertheless, we always advise customers that they are best avoided wherever possible.

We have always been aware of the principle of the “one-third rule”, but we do not like to offer it as an option because the potential for poor installation on site can result in risks that are not present in theoretical calculations. Additionally, if different types of insulation with different performance characteristics are used, the differences in thickness and thermal resistance can be confusing for people to understand.

It was interesting, therefore, to see the ‘one-third’ option effectively formalised in BS 5250:2021. In our view, however, BS 5250:2021 is only acknowledging that hybrid flat roof arrangements can occur – it is not saying that they should be considered an acceptable form of construction. To find out more about flat roof construction, condensation risk and U-values, contact us about your current project.

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SPECIFIER NEWSLETTER – ISSUE 10 – NOVEMBER 2021

We’re now firmly in the time of year when the cold weather means the heating is on, windows are closed, and clothes are frequently drying indoors. That puts a lot of moisture vapour into the air we breathe, which isn’t always properly ventilated.

As we keep striving to make buildings more energy efficient, the question of how we deal with moisture of all types – not just condensation – remains as critical as ever.

Whether it’s giving construction materials time to dry out, designing building fabric to deal with intense rain events, or addressing other sources of moisture such as the ground, moisture management should go hand in hand with conversations about thermal insulation, airtightness and ventilation.

Questionmark in window mist

Focus on BS 5250 and moisture in buildings

Throughout 2021, we’ve used this newsletter to give you the essentials on various standards and guidance documents. We’ve tried to help you understand what’s important about them and what impact they have on your work.

This month we’re looking at the recently updated BS 5250, whose name has changed from Control of condensation in buildings to Management of moisture in buildings. On this occasion, it’s almost impossible for us to pick out the highlights and parts that are most relevant to your work. It’s all important!

Our new blog post about BS 5250:2021 therefore looks at what has changed and why you should seriously consider buying a copy. We always say that many standards are big documents with a price tag to match, but in the case of BS 5250:2021 the question you might have to ask is: can you afford not to have it?

Design resources

We were interested to recently read this urgent call for a national retrofit strategy. Soon after, the government published its long-awaited heat and buildings strategy with much fanfare but little of the detail that many in our industry hoped for.

Retrofit seems to remain worryingly low on the list of priorities for our government, despite the UK having some of the oldest housing stock in Europe. Making these homes more energy efficient, and healthier and comfortable for occupants (including effective management of moisture!), has so many potential knock-on benefits in terms of meeting net zero goals and reducing healthcare demand.

The London Energy Transformation Initiative (LETI, who we have featured in this newsletter before) has sought to fill some of the void left by the lack of government policy. It recently published its Climate Emergency Retrofit Guide. High profile building physics consultancy Enhabit wrote an interesting blog post asking whether LETI’s new guide is more useful than the heat and buildings strategy.

Path and park

Getting more from Polyfoam XPS

What is extruded polystyrene (XPS) insulation? How does it perform compared to other common insulation types? What makes it the ideal choice for below ground, ground floor, and inverted flat roof applications? Our CPD presentation, accredited by the CPD Certification Service, answers all of these questions. View the seminar online or contact us to arrange online delivery to your team.

Whether it’s guidance on designing and specifying XPS insulation, or U-value calculations and condensation risk analyses, we’ve got you covered. Polyfoam XPS’s technical staff have years of experience in the construction industry generally, and insulation manufacturing specifically, and are on hand to offer advice and answer questions at any stage of a project. Contact us through the website or email technical@polyfoamxps.co.uk.

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WHAT DO ARCHITECTS NEED TO KNOW ABOUT BS 5250:2021

Questionmark in window mist

BS 5250 has always been an important standard for architects and design professionals to be familiar with. Until 2021 it was titled Control of condensation in buildings, but the publication of an updated and heavily revised version has widened its scope and it is now the code of practice for Management of moisture in buildings.

This wider-ranging approach emphasises a whole-building approach to moisture management. It seeks to identify possible risks, and presents guidance as it relates to both ‘as designed in theory’ and ‘as built/in service’ conditions. It therefore represents an even more comprehensive source of advice for designers and contractors than before.

Why does BS 5250:2021 deal with moisture management more generally?

It’s a commonly acknowledged issue that, as buildings get more airtight and more energy efficient, changes to ventilation provision have not kept pace to ensure the controlled replacement of stale air. Moisture vapour is a significant component of indoor air, exacerbated by social trends such as drying clothes indoors more often, all of which adds to the moisture content.

Warm, moist air combined with poor ventilation provision and thermal bridges in building fabric, all add to the risk of condensation occurring in buildings.

The retrofit of existing buildings is a significant issue in terms of whether the country can meet its net zero targets. Simply insulating existing buildings to reduce their energy consumption is not enough, as any retrofit design must take into account the need for ventilation and the moisture balance of the existing structure.

Applying energy efficiency solutions to existing building fabric must be done while taking into account factors like driving rain, and whether moisture might be pushed to other parts of the structure that are not currently affected by it.

Moisture risks in buildings therefore go well beyond ‘just’ condensation risk. And that’s without us taking into account climate change, the severity of extreme weather, risks of flooding, and potential changes to other moisture sources like the ground.

Does BS 5250:2021 still deal with condensation risk?

Large portions of the updated standard consist of comprehensive design guidance for floors, walls and roofs. The array of construction types covered under each element has been expanded, dealing with a much wider variety of materials and build-ups, and providing specific advice for each.

The altered scope of the standard means all of these constructions are assessed in terms of a variety of potential moisture sources. The text is careful to distinguish between design intent (‘as designed in theory’) and potential real-world issues that could be encountered (‘as built/in service’), giving designers useful context to consider when producing details and specifications.

Nevertheless, condensation risk is still a part of BS 5250:2021. As before, the standard distinguishes between the Glaser method detailed in BS EN ISO 13788, and more detailed assessment carried out in accordance with BS EN 15026.

Guidance is given as to when the simplified modelling provided by the Glaser method is appropriate (and, indeed, occasions when it is not). The standard also makes clear about occasions when calculations are not required at all because there is clear prescriptive guidance on how to avoid risks.

Because ISO 13788, the standard underpinning the Glaser method, has not changed, designers should not expect to see substantial changes to condensation risk analyses produced by construction product manufacturers using common industry software.

Where can I get a summary of the guidance in BS 5250:2021?

Our philosophy behind this series of blog posts looking at standards, and what we think designers and specifiers really need to know about those standards, has been to make them more accessible. By highlighting the key points, we’ve tried to make you more aware of the useful elements of standards without necessarily having to purchase them.

BS 5250:2021 is different to all of the other standards we’ve looked at so far. All of its contents are useful, and are written in accessible way that will help you apply the principles and recommendations to your projects.

As we saw above, elements of moisture risk are so different but also closely interlinked, making it impossible to pick out a series of key points that are universal to every project. The key with BS 5250:2021 is that every building project is unique, and therefore the way in which you will apply the standard could be different every single time you reference it.

We always say that standards are big documents that come with a hefty price tag, and it’s often not clear what you get for that price. In the case of BS 5250:2021, the value is there on every page, and it should be a document that every designer and contractor refers to regularly. Our view is not so much can you afford the standard, but rather can you afford NOT to buy a copy?

About Polyfoam XPS

Polyfoam XPS will continue to digest the comprehensive guidance of BS 5250:2021. We manufacture extruded polystyrene (XPS) insulation for ground floors and flat roofs, so over the first part of 2022 we’ll look in more detail at some of the guidance relating to those applications specifically.

As we have highlighted in this post, however, no amount of summarising can hope to provide the same level of comprehensive advice contained within the standard.

Find out more about Polyfoam XPS and our complete range of products, or learn more about current industry issues and product performance in our blog. Alternatively, to find out how we can help with flooring or roofing solutions for your project, contact us.

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SPECIFIER NEWSLETTER – ISSUE 9 – OCTOBER 2021

The 2021 UN climate change conference – COP26 – taking place in Glasgow is big news for obvious reasons.

The event has extra significance for the construction industry due to its focus on the built environment, making it a topic that we had to address in this month’s newsletter.

Man typing

Focus on product data and product information

As part of our ongoing series looking at “What do you need to know about…?”, this month we’re looking at some of the terminology and initiatives surrounding product data and product information.

Much of the current focus is on building safety, but specifiers increasingly require reliable and accurate information about environmental performance in order to make responsible decisions that can contribute to tackling the impacts of climate change.

Read our new blog post on construction product data to find out how better conversations between specifiers and manufacturers can help both parties to achieve better and more sustainable buildings.

Design Resources

With so much talk about increasing renewable energy capacity and the role that hydrogen could play as part of the future energy mix, you’d be forgiven for sometimes thinking that there’s been a loss of mainstream focus on simply making buildings more efficient. And by ‘efficient’ we mean both energy efficient, and efficient in terms of resource use.

For the built environment to play its part in protecting people from the worst impacts of climate change, it’s absolutely essential that we achieve high quality buildings that deliver long-term performance – something that this article from ArchDaily summarises neatly.

A lot of businesses and organisations still talk about using offsetting to address some of their carbon emissions, but it remains a controversial topic. The potential lack of effectiveness of carbon offsetting has been thrown into sharp relief around the world, as forests that are part of offsetting programmes have caught fire as a result of the increased frequency of extreme weather and climate events.

That’s not to say that some carbon offsetting programmes can’t and don’t work. There needs to be more clarity about what programmes actually deliver, however – which is exactly what this integrity initiative aims to provide.

The pace of change in this area remains rapid, and as ever it will be interesting to see how the construction industry adapts its behaviour in response to wider societal change. Equally, the built environment has a significant role to play in demonstrating that net zero can be achieved while keeping the need for offsetting to a minimum.

Zero falls roof

Getting More From Polyfoam XPS

Polyfoam XPS offers extruded polystyrene insulation for use in ground floor and inverted roof applications, among others.

View our complete range of Floorboard and Roofboard products, as well as accessories such as Slimline Zero WFRL for inverted roofs.

Product literature, declarations of performance and BBA certificates are all available online, or you can contact us to discuss which XPS product is best suited to your project

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