pinholes in my waterproofing coatings [Archive] - Home Construction Forums

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tadtv1
05-30-2005, 06:09 PM
I am getting tiny pinholes and bubbles in my waterproofing coatings. The first coat was Superblockade- a cementinous product that is brushed on and is like panckae batter. The 8 inch 2500PSI concrete wall was 2 or 3 days old when I started. It had tiny pock marks on it- it appears the pinholes are coming from those pock mark areas. It almost sounded like rice crispys' with the little pinholes opening up. I sprayed the wall lightly before adding the product as it suggested. Actually it said "wetted"? Also they used metal forms that were coated with oil. I used a concrete cleaner and a brush to clean off the walls and let that dry a few hours. After the second coat, I still got pinholes. And I even applied a test area of Elasto-deck BT on top of that, and even that had the tiny pinholes, although fewer. What is going on? Out gasing? Drying? Oil? I'm confusued. Thanks. Tad

giddonah
05-31-2005, 03:00 PM
Have you tried the manufacturer?

I used a sealer on a stone wall foundation which weeped moisture for a couple weeks. After that I haven't noticed anything. I should probably go around and check that and some other things during the next heavy downfall, but maybe it just needed some time to settle? I really don't know what to tell you, I'm just sharing.

Rich
05-31-2005, 03:39 PM
I would say it's off-gassing water vapor. What time of day are you applying and what temperatures are you dealing with?