Flat roof balcony

[Streetfield]

We are doing a self build with 2 flat roofs both c. 5m x 3m. One of these is also a balcony off the bedroom on first floor (for information house is dormer bungalow design). Question - both are warm roofs and have living space below is GRP or Rubber best. Balcony will have raised decking and ballustrade on floor and secret drain going through side wall which also forms external wall for room below. Thanks and any advice/ suggestions appreciated.

[SteamyTea]

GRP every time.

Think of it as a boat. Do you want something that is capable of being sailed around the world, or something that almost makes it across the Channel.

You do need to get it done properly, and that is where the challenge is.

[Streetfield]

Thanks, are there any approved bodies or certs that you can use to identify professional grp roofers who do it 'properly' ? I know you can get extended warranties but like anything it's about product and application rather than just the former.

[Thorfun]

ours was done with single-ply membrane

 

 

[ETC]

2 hours ago, Streetfield said:

Thanks, are there any approved bodies or certs that you can use to identify professional grp roofers who do it 'properly' ? I know you can get extended warranties but like anything it's about product and application rather than just the former.

Many manufacturers will have a list of approved installers who they train and vett at regular intervals.

[Streetfield]

Thanks