picturemark
New Member
- Joined
- Jun 21, 2007
- Messages
- 2
- Reaction score
- 0
My house has a second story terrace that's over my laundry room. The construction is a flat concrete roof that originally had a brick surface on top of it that became the floor of the terrace. It's about 12X20 feet. Around 8 years ago I had the brick jackhammered off because of serious spalling. The contractor then put down a rubber membrane that folds up the parapet wall about 4 inches. A pump truck then reached over the top of the house and poured a new concrete floor. Expansion joints were formed and two coats of SikaTop 144 was applied to waterproof.
Unfortunately, I don't think the concrete was formed to have water drain properly and subsequent freeze thaw cycles have caused spalling in one corner about 4X4 feet.
I chipped out the loose concrete (about 1/4 to 1 inch deep). I'm planning on putting QuickCrete down.
My problem is that I've got the rest of the terrace covered in slightly degraded Siketop coating. 5 Gallons of that stuff is going to cost a little over $200.00. They say you need two coats about 2 hours apart rolling it on. But is start drying in the bucket before that.
I'm concerned that I'm only doing a cosmetic repair (I'm not addressing the slope of the floor). I'm worried that if I try another waterproofing product (it has to stand up to light foot traffic and full sun) I"ll have bonding problems with the old coating.
Anybody have a strategy they're willing to share?
Thanks,
Mark
Unfortunately, I don't think the concrete was formed to have water drain properly and subsequent freeze thaw cycles have caused spalling in one corner about 4X4 feet.
I chipped out the loose concrete (about 1/4 to 1 inch deep). I'm planning on putting QuickCrete down.
My problem is that I've got the rest of the terrace covered in slightly degraded Siketop coating. 5 Gallons of that stuff is going to cost a little over $200.00. They say you need two coats about 2 hours apart rolling it on. But is start drying in the bucket before that.
I'm concerned that I'm only doing a cosmetic repair (I'm not addressing the slope of the floor). I'm worried that if I try another waterproofing product (it has to stand up to light foot traffic and full sun) I"ll have bonding problems with the old coating.
Anybody have a strategy they're willing to share?
Thanks,
Mark