Mortar Mix for gap between vertical wall and flat roof

Postby TopSlice » Mon Sep 07, 2009 4:51 pm

Hi guys
what mortar mix (if mortar is the right material to use) do I need for a leaking flat roof.

I have a patio door off a first floor bedroom going onto a flat roof. I believe there is a leak under the door - what mix (cement / sand ) do I need for the mortar to replace / cover existing material so as to stop the water getting through to the lounge below.


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