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Best grout for flat roof? (Read 338 times)
ProjectSunshine
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Best grout for flat roof?
Mar 28th, 2019 at 12:53pm
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Can anyone offer advice about best way to regrout patio roof, and best/easiest type of grout to use...and how to use it! Thanks
  
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PlanesPete
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Re: Best grout for flat roof?
Reply #1 - Apr 13th, 2019 at 8:31pm
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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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Ritaratbag
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Re: Best grout for flat roof?
Reply #2 - Apr 14th, 2019 at 9:44am
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Theres also a flexible grout available here for swimming pools, which should do the trick.
  
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