waterproofing outside walls

Discussion in 'General DIY' started by reg7, 18 Sep 2014.

  1. reg7

    reg7

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    Hi all, I have just finished painting the outside walls of the bungalow, I have some liquid clear waterproofer I got from BQ years ago, I tried a small patch then on the wall and and it worked great like the wall was wearing a plastic mac. I was going to coat the bungalow walls with it now that it's painted, but I have been told I should have used the waterproofer first, that seems strange to me, any help please. REG
     
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  3. foxhole

    foxhole

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    Unless you have severe problem with water penetrating, waterproofer is a bad idea.It prevents the natural drying process and if not done correctly can cause damp as trapped water can only escape to the inside of the wall.
     
  4. reg7

    reg7

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    Hi foxhole, as when I got it and tried a patch I noticed when it rained the rain sat on the treated patch rather than going all wet so I thought good idea as the rain is not sinking into the render. Looks like another good idea gone down the tubes. Reg.
     
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