List of liquid roofing systems:
- Mariseal 250
- 3M™ Scotchkote™. Urethane Roof Coating SD 650
- Liquid Plastic
- Liquid Rubber
What are liquid roofs?
Most liquid roofs are formed by applying a liquid roofing materials over the top of a subframe such as ply, OSB or insulation. The liquid solidifies and leaves a durable and weatherproof surface.
Why use a liquid roofing systems?
If the roof is complicated or you are overlaying an old felt or asphalt roof, then a liquid roofing system is probably the best system to use. There are no joints and therefore nothing to come apart at a later date.
Liquid Roofing Systems History
Liquid roofing systems have been on the market for many years now however its new materials that we have that has really made the change.
Most of the new liquid roofing systems use polymers that are cured by moisture allowing the system to be laid in damp condition. ( unlike GRP) This has really changed the game for roofers befor we used to have to dry a roof using hot air before the new roofing system could be laid. This was not only dangerous but time consuming forcing up the price of the roof work, now the preparation is basicly cleaning and minor repairs of cracks. Some of the latest Liquid roofing systems such as the 3M SD650 system rely on the tensile strength of the polymer liquid to form the roof and no embedment materials is needed as a strengthener. Like most things not everything is good for everything and these liquid roofing systems are not that good at forming warm roofs and being laid over roof insulation without a separation barrier, thus leading to additional costs and pricing themselves out of the new flat roof market, still the overlay market is the market they were designed for and as the property situation stands in the UK this is around 95% of all roofs.