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**feeshyLew** · 11-16-2007, 02:05 AM

The big room, laundry, and bath is poured cement/foundation. The original portion of the house has a crawlspace, with wood joists... but in order to get the second story in without violating the allowable height in the neighborhood, we had to set the addition down about 3 feet, so ground level. That's because the lot has a slight slope to it, about 5 feet from street to alley. Gives the upstairs some partial views on the ocean though, which is nice.

The master bath is upstairs. There we painted on a waterproof membrane over the flooring. (The membrane is the greenish stuff crawling the walls.) We taped/membraned the joint between the floor and walls too. Then put a layer of thin hardibacker board across the floor as well, with the thinset going directly on that.

11-16-2007, 02:05 AM	#8
feeshyLew Join Date Oct 2005 Posts 445 Senior Member	The big room, laundry, and bath is poured cement/foundation. The original portion of the house has a crawlspace, with wood joists... but in order to get the second story in without violating the allowable height in the neighborhood, we had to set the addition down about 3 feet, so ground level. That's because the lot has a slight slope to it, about 5 feet from street to alley. Gives the upstairs some partial views on the ocean though, which is nice. The master bath is upstairs. There we painted on a waterproof membrane over the flooring. (The membrane is the greenish stuff crawling the walls.) We taped/membraned the joint between the floor and walls too. Then put a layer of thin hardibacker board across the floor as well, with the thinset going directly on that.
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