Flat Roof advice

[Toomanycats99]

I need to replace the flat roof on my single story kitchen extension.

I am thinking about going the fibreglass route as I understand it lasts longer.

Any experience / recommendations?

You can use ESPM as well. Lasts for many many years and looks good.

That should read EDPM

Make sure if has a slight fall on it so the rain runs off into guttering.

Far better option than rubber roofs and tougher . just needs a good fall view completely flat and a good plywood backing boards

They have quoted to replace all the wooden supports as part of ot.

No no no. GRP is notorious in the industry for being fraught with problems.

There are lots of other options such as epdm, liquid, felt/hot melt that are better. But the main thing is to get an insurance backed warranty with it. Use the nfrc website to find a contractor.