Tiling a rooftop patio

Good day. I have a rooftop patio off of my kitchen on my third floor apartment. I recently removed the old decking to find the roof (normal flat, black, felt? roofing) is in fine shape--thankfully. Now, I'd like to install exterior ceramic/porcelain tiles. Can I put adhesive right on the roofing, or do I need a cement substrate first? The slope is already well structured towards the drain and so I'd like to avoid using self-leveler/skreed if possible? Thanks in advance for any guidance.

2 Answers

JD Flooring
0 Reviews
I would suggest finding out what is underneath the felt. If it’s concrete great tile straight onto this maybe put a liquid dpm first for peace of mind but providing tiling is fitted and sealed correctly no problems.
If wood is underneath a water proof board ideally quite thick and strong like osb board could be fixed the the floor and tiled over this again making sure it’s fitted and sealed correctly with the right adhesives and grout for outside use.
26th Jan 2021
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Aquaviva Construction Ltd
8 Reviews, 100% Positive
Absolutely make a concrete base, or where it is not possible to make a raised floor
7th Feb 2021
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