Trillium fiberglass floor help - Fiberglass RV


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Old 05-09-2015, 04:26 PM   #1
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Name: Tom
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Trillium fiberglass floor help

after buying a 4500 trillium, bad smell ugly tile floor, I am putting in a new floor. water tank under the table was wet , leaking tank, plywood floor was rotting . So out came the tank ( for cleaning ) removed the tiled plywood and removed all tiles from the floor. After cleaning the glue off floor ,found that the floor had some screws in it along the kitchen side, and floor cracked from one end to the other.

Should those screws be there as the heads stick out from the floor ?

Is the kitchen section a separate piece ,as it looks like it could of slide into place as, the ends are separate , and then just fiberglass together ?

On my 1300 trillium the inside looks to be all one piece ,with the closet a separate peace .


the last pic is the 1300 trillium

As I am putting in a new floor in the 4500 , how should the fiberglass floor be fixed ?
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Old 05-11-2015, 10:05 AM   #2
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My 1978 4500's have a big seam in the floor. It looks like the kitchen was a separate piece as well. Both of them just have carpet hiding it. The screws are not like the ones on your floor though.

I would be inclined to glass over the seam, if I was planning on putting down flooring. Maybe clean up some of the cracks as well.
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Old 05-11-2015, 09:33 PM   #3
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Trillium floor

After checking more , found that the plywood is rotten. So now its a bigger job of replacing the plywood.
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Old 05-11-2015, 11:23 PM   #4
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Oh, ....... now wait a minuet.

Replacing the plywood is a WAY bigger job than you can imagine. I have recently had a rethink on the best method. Previously, I would have suggested cutting a large flap in the bottom of the trailer. Probably just two cuts on a 90 deg angle to each other, intersecting at the front curb side of the sheet of plywood.

But now, I would sugest cutting the top of the cupboard doors in the gaucho, and remove the kitchen, and the floor, might need to remove the closet as well. That would be much less fibreglass work.

Probably, you are much better off to use a product like Git Rot. An epoxy that penetrates rotten wood and makes it much stronger.

But, the first thing I would check is if the front curb side is sagging. Take a straight edge from in front of the fridge door to the door of the trailer. Is the floor flat, or does it sag? If it sags, ..... well, lest hope it doesn't. And if it doesn't, then the Git Rot should be enough.

On edit:
I see that your trailer is a front dinette unit. That complicates the plywood change. Ummm....... well, I GUESS, cut the bottom of the trailer makes better sense then. Harder to see the scars. (do you get the impression that I am out of ideas?)
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Old 05-12-2015, 12:09 AM   #5
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trillium floor

any way I look at it I have my work cut for me.
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Old 05-12-2015, 10:56 AM   #6
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Probably, you are much better off to use a product like Git Rot. An epoxy that penetrates rotten wood and makes it much stronger.
The glue in plywood (or OSB ) is pretty resistant to penetrating products, so that might only deal with rot in the very top ply of the plywood.
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Old 05-12-2015, 11:33 AM   #7
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Another option is just to lay a sheet of plywood, cut to shape, over the top layer of fibreglass.
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Old 05-31-2015, 07:58 PM   #8
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interesting, I just found exactly the same think in my 1979 4500 and was wondering what to do. I have not fully cleaned the floor yet but am interested in what you end up doing. Like David said, I was just thinking of overlaying a sheet of plywood. I do not think that I have any rot but will let you know what I find.
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Old 05-31-2015, 10:26 PM   #9
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interesting, I just found exactly the same think in my 1979 4500 and was wondering what to do. I have not fully cleaned the floor yet but am interested in what you end up doing. Like David said, I was just thinking of overlaying a sheet of plywood. I do not think that I have any rot but will let you know what I find.
I was just at Trillium Outback Trailers in Calgary on saturday.
Talked to Joe about my floor. I am going to cut out the fiberglass floor, replace the plywood then fiberglass that section back in.
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Old 06-01-2015, 06:26 AM   #10
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Did he indicate that it was how the camper we made or it was a repair that was made after the fact? Sounds to me if you are repairing now, it was a previous repair.
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Old 06-01-2015, 10:18 AM   #11
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Is Joe going to do the work, or are you? At Joe's rates, that will be one expensive trailer.

A few geometry problems with your plan. Lets assume that you intend to take out the existing sheet intact. Not likely, but reinstalling will require the same amount of room. The sheet of plywood runs from the door sill to under the kitchen. This puts it under the closet as well. So, unless you pull out the kitchen, I don't see how it will be possible to get that sheet out / in. I did some detailed pictures of the plywood on one of my 1300's. I suspect the 4500's are similar:
trillium table?

It also runs under your front dinette. But that may be another sheet. I am just using my imagination, but since plywood sheets are 4' x 8', and I am assuming they laid it side to side, that would leave another couple of feet, or so at the front to cover. That narrow sheet should probably go as far back as possible, since there is not much stress between the wheels, and a sagging front curb side is a known problem with Trilliums.

I wish you the best of luck. Please post lots of pictures.
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Old 06-01-2015, 07:22 PM   #12
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I never said it was going to be easy , and I know there is going to be a lot of work but, I also don`t want a week floor.
Yes I am doing all the work my self.
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