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Old 05-02-2013, 09:07 AM   #1
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Another Soft Floor Project

Last spring we purchased a '90 T-1550 to replacce our '83 T-1550. Shortly after we got it home we noticed the floor was soft near the entrance door. Over the winter I read every floor repair posting here and gained enough confidence to take on the challenge. I found that the lower awning bracket was never sealed properly so I now have water damage for a radius of 3' on the inside near where the bracket is is mounted on the outside. So far, I have removed half of the dinette a section of OSB floor about 3'x5' in the front corner, and the entrance door. I intend to peal back some of the outside skin to get access to the wall studs. I will also remove and replace 4 floor joists and the support along the front of the TT and the support under the wall to approximately the middle of the entrance door. What wood should I use to replace the floor joists, pine like Sunline used, pressure treated, poplar, maple or oak? If i do not use pressure treated wood I would plan on coating them with some type of Polyeurathane sealant before installation. What should I use for the flooring, OSB, plywood, exterior plywood, or marine grade plywood? Again I plan on sealing what ever wood I use.

Here are some of the starting pictures of the floor removal:
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File Type: jpg P4250169.jpg (109.3 KB, 8 views)
File Type: jpg P4250170.jpg (65.2 KB, 9 views)
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Old 05-02-2013, 03:05 PM   #2
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Your work so far looks very good. When I replaced my floor, I used pressure treated lumber for the joists and pressure treated plywood for the subfloor. I thought about simply sealing regular lumber, but figured water would still find a way in. Even when you seal wood, you are only treating the outside. Once you put nails and screws in it, you are creating a pathway for water to get past the seal. The pressure treated wood was a bit more expensive, but well worth it to me.


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Old 05-06-2013, 12:48 PM   #3
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Gary,
Thank you for your reply. Over the weekend I purchased several pressure treated 2x4's. I ripped them to 1 1/2" x 1 1/4" just like the floor studs. Immediately they started warping. So I tie-wrapped them together and used a few c-clamps. If they continue to show signs of warping I don't think I should use them. Did you have any warping? How did you prevent it?

Thanks for your help!

Gary
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Old 05-08-2013, 12:33 PM   #4
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I did not rip mine. I bought 2x4's and only cut them to length. I had no problem with warping. The factory installed 2x3's originally, so I only added a bit more strength. I also used pressure treated plywood for the subfloor. If it ever does get wet again, there will be less chance for rotting wood.
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