Monday to Saturday: 8:00 AM – 6:00 PM

678 Washington DC, USA

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Roof Waterproofing

Water ingress can compromise your entire building structure. Our advanced liquid waterproofing and membrane systems seal flat roofs completely against the heaviest London downpours.

When You Need Roof Waterproofing

Your commercial or residential roof is porous and letting moisture seep through. Previous roof coatings have failed and are flaking off. You want to prevent future leaks on an ageing flat roof. You need certified waterproofing around complex roof details and penetrations.

How We Do It

We clean and power-wash the roof surface to remove dirt and loose material. We prime all surfaces to guarantee maximum adhesion. We apply high-performance waterproof membranes or liquid coatings. We inspect all edges and joints to ensure a 100% watertight seal.

What to Expect

Waterproofing projects are typically completed within one to two days.

Roof Waterproofing FAQs

We use premier GRP fibreglass and EPDM rubber systems approved for maximum longevity.
In many cases, compatible overlay systems can be applied directly over sound existing roofs, saving removal costs.
Waterproofing stops external water entry. We also install proper insulation and ventilation to combat internal condensation.
Yes, our waterproofing installations are backed by our 20-year guarantee.