The GOAT — cold liquid applied roofing membrane, ETA approved. Seamless flat roof and balcony waterproofing.

Roofing & Balconies — Cold-Applied Liquid Roofing Membrane

Flat roofs and balconies fail at the details — so we got rid of the details. The GOAT is a cold-applied liquid roofing membrane that flows around upstands, outlets, plant bases, pipework and parapets and cures into one seamless, flexible, fully-bonded waterproof skin. No torch, no hot works permit, no laps, no seams — and an ETA-assessed working life of 25 years.

Cold-applied liquid roofing — no hot works

Torch-on felt means flame on the roof: hot works permits, fire watch, insurance headaches and risk you don't need. The GOAT is a cold liquid-applied reactive polymer — rolled or poured straight from the tub, bonding aggressively to felt, asphalt, concrete, metal and single-ply. That makes it the natural choice for overlaying a tired felt or asphalt roof without stripping it, and for occupied buildings where flame is a non-starter.

  • Seamless — liquid-applied, so there are no joints to fail
  • Cold-applied — no torch, no hot works permit, no fire risk
  • Fully bonded — water can't track underneath like it does under sheets
  • Flexible — moves with the deck through thermal cycling
  • ETA certified — 25-year assessed working life
  • Detail-friendly — upstands, outlets, rooflights and plant bases coated in the same pass

Balcony and terrace waterproofing

Balconies are small roofs with worse details: door thresholds, balustrade posts, drainage outlets and constant foot traffic. The GOAT handles balcony waterproofing as one continuous membrane across the deck and up the upstands — and it's tough enough to be trafficked. For kicker blocks, foundations and podium details it's the same product doing the same job lower down the building.

The GOAT on site

Cold-applied liquid roof coating — The GOAT seamless membrane on a flat roof beside solar panels Liquid applied balcony waterproofing — The GOAT membrane across a balcony deck and upstands Waterproofing a gutter and box detail with The GOAT — fully bonded cold-applied liquid membrane The GOAT liquid applied balcony waterproofing system — terrace deck sealed up to the glazing line The GOAT waterproof barrier coating on a podium deck with concrete upstands

The system

Prime porous or dusty substrates with Primer IM or smooth surfaces with Supergrip, then apply The GOAT in two coats, checking thickness with a wet film gauge. Colours: black, grey — or solar reflective white, which adds heat management to the waterproofing: see our Solar Reflective Roofing page and the Dubai roof we cooled by 15°C.

Browse the liquid roofing membrane collection, or for wider waterproofing (basements, wet rooms, DPM) see our Waterproofing solutions.

FAQs

Can it go over an existing felt or asphalt roof?

Yes — overlaying a sound but tired felt, asphalt or single-ply roof is one of The GOAT's main jobs. Repair any soft spots, clean, prime where needed, and coat. No strip-off, no skip, no flame.

Is it foot-trafficable?

Yes — suitable for maintenance traffic on roofs and regular foot traffic on balconies and terraces.

How long does it last?

The GOAT carries an ETA with a 25-year assessed working life.

Can you supply and install?

Yes — buy direct, or ask about our approved installer network via the Installers & Distributors page. Contact us for a spec or a quote.