raised bathroom floor

Old 03-07-02, 03:51 AM
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raised bathroom floor

Can anyone give me a suggestion as to how I can raise my bathroom floor? The reason for this is that the drainage pipes can't be put under the floor in this 90 year old house. Once the pipes for the shower have been installed above the floor I will need to raise the floor for the shower and the toilet. Thanks!
Old 03-07-02, 12:58 PM
Join Date: Mar 2000
Location: Arlington, WA
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My first question is WHY can't the drains be put under the floor? If it is raised wood floor, there should be a minimum 18" clearance under the house. You won't use a backhoe to do the trenching for the drains, but it can be done by hand. IF the house happens to be on a slab, you can cut the concrete, install the drains, then patch the sections where you took out the concrete.

If you want to raise the floor to facilitate the drains, put 2X6 joists on top of the existing subfloor and run your drains as needed. then install the subfloor on the new 2X6's, and your finish flooring on that. Jsut be aware that at some point you will be creating a step up into the bathroom, and doing it this way will effectively lower the ceiling by 6". Plan carefully.

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