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Old 08-18-2015, 11:00 AM   #1
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Question Help!!! Soft Floor in a HW256...

This seems to be a great forum with a lot of knowledge. I usually sit on the sidelines and read other's posts. Now, I'm hoping to get some help for myself. I'm sorry if this has been covered before. I tried using the search function, but wasn't having much luck. I've got an issue with the floor of our HW256 that I'm not really sure about how to go about addressing. There a are three areas that are showing signs of water damage. I think I've gotten the leaks taken care of, but cannot decide on a plan of attack to repair the floor. Can the decking be repaired without disassembling and replacing the entire floor? From underneath, there is no damage visible. It doesn't even bow when stepped on. Are there multiple layers within the floor? I've peeled back the vinyl at the door opening (the first location to show signs of softness) and it looks like the OSB board is starting to come apart. Can each section be cut away individually and replaced? The image shows where the damage areas are located. Any input I can get is very appreciated. Thanks.
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Old 08-18-2015, 12:02 PM   #2
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I would think that a good quality marine plywood cut to fit inside the steel frame under the floor would fix the problem. I would use construction adhesive between the two layers and hold it with screws down from the top and under the vinyl.
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Old 08-18-2015, 12:12 PM   #3
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I was thinking of bracing from the bottom when it started becoming obvious. However, there isn't any signs of sagging noticeable from below. Not even if DW is standing inside the camper trying to flex it. That's why I was wondering if there were multiple layers. :-/
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Old 08-19-2015, 08:49 PM   #4
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Hi Dan.

I feel for you.

I few things you need to check out.

I believe you do not have a plywood floor. You may have a foam floor.

The floor in your camper is probably a 1/8" luan/foam/1/4"luan sandwich. These floors are a bit more work as you cannot simply buy a like thickness of plywood and fix it.

Good luck,

Vin.
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Old 08-20-2015, 06:51 AM   #5
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No, it's definitely OSB particle board. Or at least that's what's under the vinyl right at the front door.
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Old 08-20-2015, 11:19 AM   #6
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Nice. That makes it much easier for you.

On my unit, it had the foam floor. Other pop ups show the OSB from underneath but mine was covered underneath with a black plastic membrane.

You should be able to cut out the bad pieces and replace with like thickness OSB. You cannot fix it totally because the vinyl flooring goes under the cabinates. What many people do is simply cut out the visible floor and replace with new vinyl. It will not match under the cabinates but some people can live with that.

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Old 08-20-2015, 03:24 PM   #7
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Our vacation prep was complicated when we discovered a soft spot in the storage area of our FR PUP, and light was showing through a rather large section. The floor is made of marine grade plywood. The manufacturer's booklet guarantees it for life, saying that each fiber is treated and waterproofed. We cut out the soggy and rotted portion and layed in a section of plywood of similar quality, then sealed around the cut and across the entire rear of the trailer with waterproof foam insulation. Our next step will be to spray paint the underside of all the new stuff with waterproof paint, similar to what is already there. You should be able to do the same--just make sure that the replacement wood is waterproofed and that it is the same thickness as what you remove. The original floor is one sheet, so you should be able to cut out sections without taking the insides apart. I shined a light throughout the interior and under all storage compartments to make certain there are no leaks from underneath--like water splashing up from a wet road. good luck!
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Old 08-20-2015, 05:20 PM   #8
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Our 23 lb had a spongy floor and we contacted Forest river and took it to the factory . It was just out of 2 year extended service. I had no water damage but they forgot to glue it properly. They lifted my whole tailor up and put on a new floor. Ours was a factory defect.
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Old 08-20-2015, 06:12 PM   #9
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Thanks for the replies. The bottom does seem to have the black membrane underneath. But there is definitely OSB on the top under the vinyl flooring. Any idea how thick the OSB is? I'd like to cut the particle board out without damaging the underlayment. I don't have a problem with replacing the vinyl. And I'm almost positive that FR would never cover this. It's a 2006. And I'm the third owner (at least). Any idea what a shop might charge to repair something like this?
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Old 08-20-2015, 08:07 PM   #10
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You will not know for sure until you cut into the floor. The membrane is not a good sign.

My current unit is only 1/2" OSB. I can clearly see the OSB exposed under it.

I wish they had used a bit more like 5/8". That extra bit makes a big difference in plywood. Oh well. Such are the ways with Forest River.

Typical cost is all over the place. It is not a big job to do to patch it. Again, the problem is it is gonna look like a patch job.

Vin.
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