David Mclean 0 Posted January 31 Hello Got a garage that is leaking water through the walls, get big damp patches then when it rains hard it will pool on the floor. I have tools/classic car etc etc inside and need to solve this asap, I have seen products like Permagard do they work? Is something like Permagard going to fix this or do I need to look at some sort of external cladding? Any ideas of first hand experience much appreciated Share this post Link to post Share on other sites
Onoff 4,834 Posted January 31 What's going on outside then, ground too high, water splashing up, gutter running down? What type of Ford is it then? Share this post Link to post Share on other sites
David Mclean 0 Posted January 31 Hello Sorry I should have put a bit more info, flat roof, no gutting, its a single wall construction, its got one area where the earth is above the DPC but ironically thats the driest area. Can do a photo of the outside if that helps Share this post Link to post Share on other sites
MortarThePoint 28 Posted January 31 Do you think the water is just penetrating the wall or is there a leaking gutter, roof etc. Waterbutts can create real problems if not done carefully as my inlaws had an issue with theirs. You may want to get a dehumidifier in there whilst you sort something out Share this post Link to post Share on other sites
David Mclean 0 Posted January 31 My gut feeling is its coming through the wall, dehumidifier in already. Share this post Link to post Share on other sites
Onoff 4,834 Posted January 31 When it pools on the floor does it come in through the damp patch in the picture and run down, or does it come in at the base of the wall? No guttering...so is there water running down the outside of the wall (from the roof) when it rains? Share this post Link to post Share on other sites
MortarThePoint 28 Posted January 31 2 minutes ago, David Mclean said: My gut feeling is its coming through the wall, dehumidifier in already. An outside shot would help then as different finishes will likely call for different approaches Share this post Link to post Share on other sites
David Mclean 0 Posted January 31 4 minutes ago, Onoff said: When it pools on the floor does it come in through the damp patch in the picture and run down, or does it come in at the base of the wall? No guttering...so is there water running down the outside of the wall (from the roof) when it rains? Yes Flat roof with a lip round the edge, drain in one corner... Will do some more photos in the morning Share this post Link to post Share on other sites
Conor 277 Posted January 31 (edited) Is the wall rendered? My single skin shed had damp patches galore until I put a scratch coat on, solved it straight away. And external masonry paint helps a lot. Edited January 31 by Conor Share this post Link to post Share on other sites
Temp 1,422 Posted February 1 (edited) Single skin brick walls can be very porous. +1 to render or cladding. May need planning permission? Edited February 1 by Temp Share this post Link to post Share on other sites
Onoff 4,834 Posted February 5 I'd try say a water seal like Everbuild 402 Water Seal. Cheap enough. Share this post Link to post Share on other sites
David Mclean 0 Posted February 14 Hmmmm I tried this and it has made the slightest difference https://www.screwfix.com/p/no-nonsense-water-repellent-seal-clear-5ltr/57474?tc=NA9&ds_kid=92700058024393117&ds_rl=1249407&ds_rl=1241687&ds_rl=1245250&ds_rl=1245250&gclid=CjwKCAiAsaOBBhA4EiwAo0_AnMgYOAI1Vupw34NYn3jvvb8H9peYJ7Ze3Qu_4qW9bZw7UsNuT3k_lBoCrnEQAvD_BwE&gclsrc=aw.ds Share this post Link to post Share on other sites
mvincentd 149 Posted February 14 The mortar between your blocks can suck water through like a sponge, as can the blocks to a lesser extent. This is the easy obvious explanation. For zero cosmetic change externally try a masonry cream, a step up in price from screw fix/everbuild/thompsons waterseal but you get what you pay for. http://www.stormdry.com If you can stand a cosmetic change externally http://www.renotex.co.uk/renotex_rollercoat.php I used this over failing render 4 years ago in economic preference at the time to replacing the render and it's still good.....quite a sticky mess to work with though. Share this post Link to post Share on other sites
David Mclean 0 Posted February 15 Thanks for the info, I have looked at Stormdry and Permagard as they seemed to be pretty similar products, was hoping for someone with some first hand experience in using one of them. As you say you get what you pay for! https://www.permagard.co.uk/microshield-ultra-masonry-waterproofing-cream Share this post Link to post Share on other sites
joe90 1,961 Posted February 15 I used this on my west facing brick wall near the Atlantic and it was easy to use, and did a brilliant job with one coat. Tested it when dry with a hose and water ran off it like glass. 👍. https://www.kingfisheruk.com/superseal-professional-water-seal-item-73#73a Share this post Link to post Share on other sites