Every building starts with a choice of materials. And today, that choice carries more weight than ever. Clients want greener buildings. Rating systems reward low-carbon products. So architects need a fair way to compare one product with another.
That is where an Environmental Product Declaration (EPD) comes in. An EPD gives you verified data on a product’s impact across its whole life. So you can stop guessing and start comparing real numbers.
In this guide, you will learn how architects use EPDs at each stage of a project. You will also see what to check, what to avoid, and how EPDs help you earn green building credits in the UAE and GCC.
What Is an EPD, in Simple Terms?
An EPD is a short, verified report on a product’s environmental impact. It covers the product’s life cycle, from raw materials to disposal. Think of it as a nutrition label for building products.
Each EPD follows ISO 14025. Building products also follow EN 15804. An independent verifier checks the data before the EPD goes public. So you can trust the numbers more than a maker’s own green claims.
An EPD does not call a product “good” or “bad”. Instead, it shows the facts. That includes carbon, energy, water and waste figures. Then you decide what works best for your design.
EPD for Architects: Why It Matters Now
A few years ago, few architects in the region asked for EPDs. Now, many specs ask for them by default. Here is why the shift happened.
- Embodied carbon matters more. Buildings use less energy every year. So the carbon locked inside materials now makes up a bigger share of a building’s total footprint.
- Rating systems reward EPDs. LEED, Estidama Pearl, Al Sa’fat, GSAS and BREEAM all give credit for products with EPDs.
- Clients set carbon targets. Developers and government clients in the UAE and Saudi Arabia now set net zero goals. They need product data to prove progress.
- Tenders ask for proof. Many public projects now favour suppliers who can show verified data.
So an EPD helps you design greener buildings and back up every choice with facts.
How Architects Use EPDs at Each Project Stage
EPDs help most when you use them early. Here is how they fit into a typical project.
Concept and Early Design
At concept stage, big choices drive most of the carbon. For example, you might weigh a concrete frame against steel or timber. Industry-average EPDs give you a quick baseline for each option. So you can see which system carries more carbon before you commit.
Many architects also run a whole-building life cycle assessment at this stage. The assessment models the carbon of the full building, and EPDs feed it the product data it needs.
Design Development
Next, you pick product types. Should the façade use aluminium panels or fibre cement? Should floors use ceramic tiles or vinyl? Here, EPDs help you compare options inside each product group. You can also set carbon limits for key materials, such as a maximum carbon figure per cubic metre of concrete.
Specification
In the spec, ask suppliers for product-specific EPDs. Many architects add a clear line, such as “Provide a third-party verified EPD to ISO 14025 and EN 15804.” That one sentence pushes suppliers to share real data. It also protects your LEED and Estidama credits later.
Procurement and Substitution
Contractors often propose substitutes to save cost or time. So ask for an EPD with every substitute. Then compare it with the product you specified. If the substitute carries far more carbon, you have the data to push back.
Handover and Reporting
Finally, collect all product EPDs in one project file. Assessors need them for credit submissions. Clients also use them for ESG and carbon reports. So a tidy EPD file saves weeks of chasing documents at the end.
What to Check When You Read an EPD
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Not every EPD tells the same story. So check these six points before you compare products.
- Verification. Look for the verifier’s name and statement. A self-declared report does not count as an EPD.
- Validity date. Most EPDs last five years. An expired EPD may not count toward your credits.
- Product match. Make sure the EPD covers the exact product, not just a similar one. Check the product name, factory and region.
- Declared or functional unit. One EPD may report per kilogram, while another reports per square metre. You can only compare when the units match.
- Life cycle modules. Check which stages the EPD covers. Most report modules A1 to A3, the product stage. Some also cover transport, use and end of life.
- Product Category Rules (PCR). Products should follow the same PCR. Different rules can lead to different results.
Get these six checks right, and your comparisons will hold up in front of any assessor.
Product-Specific vs Industry-Average EPDs
EPDs come in a few types. For architects, two matter most.
A product-specific EPD covers one maker’s product from one factory. It gives the most accurate data. So it works best for final specs and credit claims.
An industry-average EPD covers a whole sector. It shows typical results across many makers. So it suits early design, when you have not picked a supplier yet.
Rating systems often value product-specific EPDs more. For example, LEED counts a product-specific EPD as one full product, but an industry-wide EPD counts as only half. So push for product-specific EPDs on your major materials.
How EPDs Help You Earn Green Building Credits
Green building rating systems across the GCC use EPDs in different ways. Here is a quick look.
- LEED: The EPD credit asks for at least 20 permanently installed products from five different manufacturers. A further option rewards products that show lower impacts than the industry baseline.
- Estidama Pearl: Abu Dhabi’s system rewards responsible material choices. EPDs give you the evidence to back them up.
- Al Sa’fat: Dubai’s green building system pushes for greener materials. EPD data helps you show compliance.
- GSAS: This system uses life cycle data for material credits, and EPDs supply that data.
- BREEAM: Material credits draw on life cycle assessment and EPD results.
So one good EPD can support credits on many projects, across many rating systems.
Common Mistakes Architects Make With EPDs
EPDs are simple once you know them. Still, a few mistakes come up again and again.
- Comparing different units. A per-kilogram figure and a per-square-metre figure tell different stories.
- Accepting expired EPDs. Always check the date before you add a product to the credit file.
- Treating a carbon report as an EPD. A carbon footprint report shows carbon only, and it may lack third-party verification.
- Asking too late. Suppliers need weeks to produce an EPD. A request at handover often comes too late.
- Looking only at carbon. Carbon matters most today. However, water, energy and waste figures count too.
How to Get Suppliers to Share EPDs
Many GCC suppliers still lack EPDs. So you can help them get there.
First, ask early, at tender stage. Next, explain which credits depend on their data. That gives them a clear business reason to act. Then point them to expert help. Suppliers new to the process can get support for EPD certification in the UAE from specialists such as EnviroLink, who handle the life cycle assessment, verification and registration for them.
Finally, give suppliers enough time. Most EPDs take 8 to 14 weeks once the factory shares its data. So an early request keeps your whole programme on track.
Final Thoughts
An EPD for architects works as a simple decision tool. It gives you fair, verified data that you can trust. So you can compare products, cut embodied carbon and earn credits with confidence.
Start early, read each EPD with care, and ask suppliers for product-specific data. Your designs will get greener, and your clients will see the proof.
Frequently Asked Questions
What is an EPD in construction?
An EPD is a verified report that shows a building product’s impact on the planet across its life. It covers carbon, energy, water and waste. It follows ISO 14025 and EN 15804, and an independent verifier checks it. So architects can trust the data and compare products on equal terms.
Why do architects need EPDs?
Architects use EPDs to compare products, cut embodied carbon and earn green building credits. LEED, Estidama, Al Sa’fat, GSAS and BREEAM all reward products with EPDs. EPDs also help clients meet carbon targets and ESG goals. So they turn green design choices into proof that assessors and clients accept.
How do you compare two EPDs?
Check that both EPDs use the same declared or functional unit, the same PCR and the same life cycle modules. Then compare the key figures, such as global warming potential. Also confirm that both EPDs carry third-party verification and a valid date. Otherwise, the comparison may mislead you.
Does LEED require EPDs?
LEED does not require an EPD for every product. However, the EPD credit asks for at least 20 permanently installed products from five different manufacturers. Product-specific EPDs count as one full product, while industry-wide EPDs count as half. So early requests from architects make a real difference to the final score.
How long does an EPD stay valid?
Most EPDs stay valid for five years from the date of publication. However, a maker must update the EPD sooner if the product, raw materials or factory process change in a big way. So always check the validity date before you add a product to your spec or credit file.
How long does it take a supplier to get an EPD?
Most suppliers need 8 to 14 weeks from the day they share complete factory data. The process covers data collection, a life cycle assessment, third-party verification and registration with a program operator. Suppliers with good data move faster. So architects should ask for EPDs at tender stage, not at handover.
