Monday to Saturday: 8:00 AM – 6:00 PM

678 Washington DC, USA

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Roof Insulation & Decking

A strong flat roof starts from the deck up. We replace rotted timber decking and install high-performance thermal insulation to improve energy efficiency and structural stability.

When You Need Roof Insulation & Decking

Your flat roof feels spongy or gives way when walked on. Rooms directly below your flat roof are cold and difficult to heat. Rot or damp has weakened the timber joists and decking boards. You need to upgrade your flat roof insulation to meet current building regulations.

How We Do It

We strip back the failed roof membrane to expose damaged decking. We remove rotted timber and treat or replace joists as needed. We install high-grade OSB3 decking boards and rigid PIR insulation. We apply our watertight GRP or EPDM membrane over the new deck.

What to Expect

Decking and insulation renewals take two to three days depending on structural scope.

Roof Insulation & Decking FAQs

Rotted decking compromises the entire roof structure. Installing fresh OSB3 boards provides a rigid foundation for your new waterproof membrane.
We use high-performance rigid insulation boards that offer superior thermal performance with minimal thickness.
Yes. Proper flat roof insulation significantly reduces heat loss through the top of your property.
We use only top-grade, moisture-resistant structural timber and boarding that complies with UK building standards.