If the roof has the required slopes for water runoff, a very good solution with a long life span is the asphalt membranes.
These are divided into several categories depending on their quality.
They are mainly divided into:
- Plasticized asphaltic membranes (APP) : Asphalt can be made more plastic by adding APP (naughty propylene) type polymers with high resistance to UV radiation and high temperatures.
- Elastomeric asphaltic membranes (SBS) : Asphalt can be made more elastic by the addition of SBS (styrene-butadiene-styrene) polymers with high resistance and flexibility at low temperatures and increased durability.
The final coating of an asphaltic membrane can be:
- polyethylene film or sand
- Coloured mosaic
- Metal sheet (aluminium or copper)
For more information about asphaltic membranes click HERE
