GreenGables Posted July 25, 2023 Share Posted July 25, 2023 Hello, My builder has installed coping stones around my flat roofs but he has not installed them with the correct slope. They should have a 3 degree slope front to back but most have 1-2 degrees at best. Will this make much difference to the function of the coping stones? At the moment we are getting lots of drips running down the front of the stones and at the joins between the coping the drips are reaching the mortar bed and saturating the top of the walls. Will correcting the slope by a small amount make much difference? The drip line is clearly not functioning correctly either. Thanks GG Link to comment Share on other sites More sharing options...
Conor Posted July 25, 2023 Share Posted July 25, 2023 Did he install a DPC/ flashing where the flat roof meets on the other side? Link to comment Share on other sites More sharing options...
GreenGables Posted July 25, 2023 Author Share Posted July 25, 2023 Hi Conor. Yes I believe so! Link to comment Share on other sites More sharing options...
nod Posted July 25, 2023 Share Posted July 25, 2023 49 minutes ago, Conor said: Did he install a DPC/ flashing where the flat roof meets on the other side? +1 That’s The most important thing The copings should just be decretive Link to comment Share on other sites More sharing options...
Dave Jones Posted July 26, 2023 Share Posted July 26, 2023 more importantly there should be a cavity closer on top that wall, assuming its a cavity of course, then a DPC lapped over beofre bedding the copers on. The DPC is not evident from the photo and it should be to comply with NHBC standard. Get it fixed now before it rots out your wall. Link to comment Share on other sites More sharing options...
GreenGables Posted July 27, 2023 Author Share Posted July 27, 2023 Thanks Dave. I will look into this. Link to comment Share on other sites More sharing options...
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