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Help or Advice >> Help and Advice Wanted >> Best grout for flat roof?
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Message started by ProjectSunshine on Mar 28th, 2019 at 12:53pm

Title: Re: Best grout for flat roof?
Post by PlanesPete on Apr 13th, 2019 at 8:31pm
We used standard grout for our flat, tiled roof. After about a yeas, heavy rain would come through ib patched and on close inspection there were tiny cracks between grout and tile in a few places. We used a common waterproofing sealant (Wilkinsons but other makes available here). This is a wax suspended in white spirit, like Waxoyl for cars. Painted on 2 coats into the grout lines and no further problems in 5 years since. Also effective on hairline cracks in monocap or rendered walls.

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