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Old 12-05-2014, 09:16 PM   #1
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Soft spot in floor

I have a 2004 BTCruiser by Gulf Stream which has a soft spot in the floor in the kitchen. I removed the vinyl and the floor is dry and no indication of water damage. How is the floor constructed so I know how to support the new piece of floor after I remove the soft spot? Thanks for any suggestions Terrehill
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Old 12-05-2014, 10:55 PM   #2
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Often the floor is constructed of particle or strand board over a layer of foam insulation. I suggest you start with a 2-3" hole saw in the middle of the soft spot, removing the hole saw often so you get the idea of the thickness of the flooring layers. Then set you circular saw to cut just the depth of the underlayment flooring. It will make your patch stronger and more seamless if you can make the cut at a 45 angle so the replacement piece will be wider at the top than the bottom.
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Old 12-06-2014, 03:20 AM   #3
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You may be able to support the floor from under the coach . We have done so at times and the result was amazing.
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Old 12-09-2014, 04:22 PM   #4
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I can't attest to the actual thickness of your floor but most are 5/8", they make a tool called Toe Kick Saw that will only cut to a depth of 3/4" and will cut flush with a kick panel or wall ect. you can cut out with that and assess the damage, the hole saw is also a good idea to find out how thick and whats under the floor. good luck
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Old 12-10-2014, 08:03 AM   #5
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I have the same problem. I have to physically unhook the water heater lines and install a bypass to winterize the 5th wheel. A year ago in Florida i hooked the lines back up but unknown to me one was slightly leaking for a week. So now in front of the sink the floor is really soft. I have to work up the nerve to pull up the linoleum and start cutting.
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Old 12-12-2014, 06:39 PM   #6
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Quote:
Originally Posted by RV Wizard View Post
You may be able to support the floor from under the coach . We have done so at times and the result was amazing.
Just how did you support the floor from underneath? Thanks Terrehill
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Old 12-13-2014, 03:28 AM   #7
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Added cross bracing from the frame with plate steel to spread the support out on the bottom of floor.
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Old 12-13-2014, 06:47 PM   #8
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soft and squeaky floor

In my BTcruiser the floor is constructed as such. Starting with a metal pan on the bottom then a 13/4 inch styrofoam glued to that then a 1/2 inch board glued to the top of that. That is the total construction. What I see is the styrofoam coming unglued from the metal. When you put a little pressure on the soft spot the metal flexes which makes the squeaky noise. Any suggestions for a fix would be appreciated. Thanks Terrehill
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Old 12-15-2014, 06:53 PM   #9
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soft and squeaky floor

How thick was that plate steel on the bottom and how was it attached? Thanks Terrehill
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Old 12-16-2014, 03:40 AM   #10
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3/16" welded to cross braces and cross braces secured to frame. Slightly jacked up to insure lift of floor before secured to frame rails.
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Old 12-16-2014, 08:15 AM   #11
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My Super C had a soft spot because there was no support at the seam between sheets of flooring. I mad a support frame out of 1" square tubing.

GS fixed it in later years.
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