If you own a house it’s fairly likely that you also have a flat roof. This might be on top of a garage, porch, shed or extension.
If you’re thinking of reroofing or installing a new flat roof, it’s important that you get the right roofing material for you. Things to consider include how long they last, how easy they are to repair and how much they cost.
But when researching roofing materials, you may come across words and phrases you don’t know or understand. To help you in your search for the right flat roofing material, we’ve come up with 10 flat roofing terms and definitions you need to know.
1. SINGLE PLY MEMBRANE
Single ply membranes are roofing materials that come in one single layer. They are waterproof, and include EMPD rubber, PVC, TPO and TPE. Single ply membranes are often more expensive than other flat roofing materials. But they tend to need less maintenance and last longer.
2. UV LIGHT DAMAGE
The sun gives out UV (ultraviolet) light. This can cause radiation damage to flat roofs. Over time it will break down chemical bonds in the roofing material, which can lead to weakening, warping and leaking. To protect your roof from UV damage, you can apply solar reflective paint or chippings.
The substrate is the part of a flat roof that the surfacing material attaches to. It’s usually made up of gypsum or plywood boards.
Alligatoring refers to cracks in asphalt. It’s so called because the cracking can resemble scales, as it doesn’t go all the way down to the roof base. Alligatoring needs rectifying before the damage gets worse and leads to leaks in your roof.