Triple07 Posted November 18, 2018 Share Posted November 18, 2018 Decided on galvanised Lidab majestic guttering...anybody got this and what diameter did they go for? choices are: 100, 125,150 and 190... ruling out 150 and 190 as enormous for a 1.5 story building! Link to comment Share on other sites More sharing options...
PeterW Posted November 18, 2018 Share Posted November 18, 2018 Depends on the roof pitch and also the tile overhang. 125mm is much better than 100 - deepflow gutters also don’t need as many downpipes Link to comment Share on other sites More sharing options...
MikeSharp01 Posted November 18, 2018 Share Posted November 18, 2018 14 minutes ago, PeterW said: Depends on the roof pitch and also the tile overhang. 125mm is much better than 100 - deepflow gutters also don’t need as many downpipes How do you work out how many down pipes I wonder. Link to comment Share on other sites More sharing options...
PeterW Posted November 18, 2018 Share Posted November 18, 2018 2 minutes ago, MikeSharp01 said: How do you work out how many down pipes I wonder. BSEN 12056, Part 3: Roof drainage, layout and calculations... Link to comment Share on other sites More sharing options...
Triple07 Posted November 18, 2018 Author Share Posted November 18, 2018 Slate roof, 42degree pitch, overhang of 60mm, can’t see an option for deep flow but think the steel is all deep? Happy to be corrected! Link to comment Share on other sites More sharing options...
Tennentslager Posted November 19, 2018 Share Posted November 19, 2018 It's in here... roof_drainage_system_assembly.pdf 1 Link to comment Share on other sites More sharing options...
Mr Punter Posted November 19, 2018 Share Posted November 19, 2018 You need to be pretty handy with the tin snips for cutting Lindab and fitting outlets. Saw or grinder is a no-no as the rough edges rust where a clean cut has less surface area and will heal with galv. Link to comment Share on other sites More sharing options...
MikeSharp01 Posted November 19, 2018 Share Posted November 19, 2018 14 hours ago, PeterW said: BSEN 12056, Part 3: Roof drainage, layout and calculations... That is interesting, I just took the house next door as an example of required drainage arrangements and used the part H rules for the BC stuff, seems I could have been much more refined. Link to comment Share on other sites More sharing options...
Triple07 Posted November 21, 2018 Author Share Posted November 21, 2018 Thanks @Tennentslager knew there would be a pdf somewhere but I couldn’t find it! Link to comment Share on other sites More sharing options...
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