What roofs can I use Sealacryl on?
Sealacryl is a multi-purpose weatherproofing membrane for a wide range of roof surfaces, including felt, asphalt and metal. It is used to coat, waterproof and seal flat and low-pitch roofs, and to reseal laps, joints and flashings where water gets in.
Does it resist ponding water?
Yes. Sealacryl is formulated to resist ponding water – the standing water that collects on flat roofs after rain and causes many coatings to fail. Its flexible, durable film keeps water out even where drainage is poor, which is common on older flat roofs.
What colours does it come in?
Sealacryl is available in white, black and grey, in 1kg and 5kg sizes. White is often chosen to reflect heat and reduce roof temperature, while black and grey suit repairs where you want the coating to blend with an existing dark roof.
Is it UV stable?
Yes. It is a UV-stable coating, so it resists the sunlight degradation that cracks and embrittles cheaper roof paints over time. That UV stability, combined with its flexibility, is what gives the membrane its durability against general weathering.
Can I apply it in cold or damp weather?
Apply Sealacryl to a clean, sound, dry surface in dry conditions. As a solvent-based coating it tolerates cool conditions better than water-based emulsions, but avoid applying in frost, rain or onto a wet roof – trapped moisture will affect adhesion and curing.
How many coats and how much do I need?
For a durable finish apply as directed, building up coats to achieve full film thickness and working the coating well into laps and detail. Coverage varies with the roughness and porosity of the roof, so allow extra on old, absorbent felt or asphalt.
Can I use it to seal a leak?
Yes. Sealacryl is widely used to seal leaks on flat roofs – over splits, blisters, laps and around flashings and upstands. For larger cracks, reinforce the repair by bedding a scrim or membrane into the wet coating for added strength.
How long does a flat roof coating last?
A correctly applied coating adds years of waterproof protection, though the exact lifespan depends on the condition of the roof beneath, exposure and how well it was applied. Recoating before the film wears through keeps a flat roof watertight far more cheaply than replacing it.
