How to seal the Balcony Floors

[Ambaz79]

Hello

 

We have built 2 Balconys on the back of our house that are internal where part of the room has been taken back to create a external space but still under the main roof.  We are fitting 3 glazed planels as the balastrade however we still will have some rain come in on windy days and I wanted to know the best way to make this area waterproof as we have our Living room under one and Kitchen under the other balcony area.  The plan is to tile the balcony floors. 

 

Area is roughly for each balcony is about 1.5M x 4M.

 

Does anyone have any suggestions on what to use to make these areas water tight?

[Conor]

I don't see any drainage. What the floor build up and where does the water go? You'll always have the risk of water coming in, therefore you should treat it as an external element - e.g. insulated underneath, waterproof layer (EPDM, PVC etc), DPC along and wall and flashing etc at doors and most importantly a means for water to escape.

 

Apart from the glass ballustrade, only other thing you can do is some sort of overhang/ shading fins on the soffit and around the reveals.

Edited December 19, 2022 by Conor