7 November 2026 / Caryne & Dwayne Team
Both approaches keep water out, and both are widely used. The right choice depends on the surface, the movement it will see, and how much detailing the roof or deck has.
Liquid-applied systems
These are applied as a liquid and cure in place, forming a seamless layer with no laps. They suit roofs and decks with many penetrations, upstands and awkward corners, because the coating flows around them. Performance depends on applying the correct thickness, so the film should be checked as the work proceeds.
Sheet membranes
Factory-made sheets, such as EPDM, arrive with a controlled thickness. They suit large, open areas where speed matters. The joints are the critical detail: laps and edges must be bonded or sealed correctly.
How to decide
- Is the surface complex, with many details, or a large open area?
- How much structural movement is expected?
- Will the finish be exposed to sun and foot traffic, or covered by screed or paving?
- Who will apply it, and what quality control is available on site?
If you are not sure, send us your project details and we will recommend a system. Data sheets for every product are available on the product pages.
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