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Trailer Flooring??? #5142140 06/23/19 06:36 PM
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maverickfhs Offline OP
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So I recently picked up a 4x8 and it's made by this company: http://cesmith.com/ and comes with 13 inch tires. I really liked it, can be an excellent platform for towing motorcycles and other stuff behind a car smile

But the floor is made of plywood and it's almost rotted out.

Have to put a floor, was thinking to use 2x4(PT), laid right next to each other would be a good option. Is that a good option or should consider something else? Appreciate any help and advise thumbsup


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Re: Trailer Flooring??? [Re: maverickfhs] #5142161 06/23/19 06:53 PM
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philipp10 Offline
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Green treated plywood will probably last you more than a decade and mounts easily. How would you mount separate 2 x 4's?

Last edited by philipp10; 06/23/19 06:54 PM.
Re: Trailer Flooring??? [Re: philipp10] #5142168 06/23/19 06:59 PM
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maverickfhs Offline OP
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Originally Posted by philipp10
Green treated plywood will probably last you more than a decade and mounts easily. How would you mount separate 2 x 4's?

What size or thickness for plywood would be good for motorcycle, fridge or very rare furniture stuff?

There are mounting holes on the frame, so laying one with the other and then bolting them down? Definitely a noob!


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Re: Trailer Flooring??? [Re: maverickfhs] #5142188 06/23/19 07:24 PM
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Danno Offline
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You're looking at either 1/2" or 3/4" plywood. The 3/4" is quite heavy. How thick was the original plywood floor?

https://www.lowes.com/pd/Severe-Wea...-Sheathing-Application-as-4-X-8/50017278
https://www.lowes.com/pd/Severe-Wea...-Sheathing-Application-as-4-X-8/50017280


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Re: Trailer Flooring??? [Re: Danno] #5142214 06/23/19 07:54 PM
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maverickfhs Offline OP
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Originally Posted by Danno
You're looking at either 1/2" or 3/4" plywood. The 3/4" is quite heavy. How thick was the original plywood floor?

https://www.lowes.com/pd/Severe-Wea...-Sheathing-Application-as-4-X-8/50017278
https://www.lowes.com/pd/Severe-Wea...-Sheathing-Application-as-4-X-8/50017280

Thanks, think original is 3/4" but will measure it tomorrow.


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Re: Trailer Flooring??? [Re: maverickfhs] #5142219 06/23/19 08:00 PM
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Eddie Offline
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3/4 IS THE WAY TO GO. ED


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Re: Trailer Flooring??? [Re: maverickfhs] #5142337 06/23/19 10:01 PM
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double vanos Offline
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If you go with 2x4s treat yearly with copper green: https://www.lowes.com/pd/COPPER-GRE...ner-Actual-Net-Contents-1-Gallon/3064247


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Re: Trailer Flooring??? [Re: maverickfhs] #5142383 06/23/19 11:34 PM
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Dave9 Offline
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Plastic deck planks. You don't need 2x (4) thickness, mostly just something that won't rot.

Re: Trailer Flooring??? [Re: maverickfhs] #5142396 06/24/19 12:06 AM
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Nick1994 Offline
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Just get another sheet of nice plywood and either paint it or seal it, and just replace every few years. Not too big of a deal.


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Re: Trailer Flooring??? [Re: maverickfhs] #5142506 06/24/19 06:42 AM
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Miller88 Offline
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PT 4x8 sheet of 3/4'' plywood is what I have on mine. It's worked for appliances and > 2000 pounds of gravel / dirt / fill / cinder blocks


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Re: Trailer Flooring??? [Re: maverickfhs] #5142535 06/24/19 07:06 AM
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pcoxe Offline
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Treated lumber can be corrosive to steel. Plastic deck boards would probably be best.

Re: Trailer Flooring??? [Re: Nick1994] #5142571 06/24/19 07:40 AM
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supton Offline
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Originally Posted by Nick1994
Just get another sheet of nice plywood and either paint it or seal it, and just replace every few years. Not too big of a deal.

Ditto. I did a sheet of advantek (sp?) and left it untreated, per the advice of the guy at the lumber store; I think it went 8 years before it rotted out? Mind you it would be full of snow over the course of the winter. Second time around I splashed house paint on it and it's holding up much better. Single sheet of 3/4" and some carriage bolts.

FWIW my HF trailer was painted red but it was the cheapest red they could use. And the metal is cheap too. You might do well to slap some house paint onto the metal surfaces too to slow down UV exposure on the paint that is still good.

Edit: on PT 2x4's (if you do siding) you're supposed to use galvanized hardware but I didn't, just used cheapo zinc and it seems to be holding up ok. YMMV. I suspect the unpainted PT will die before the zinc hardware will.

Last edited by supton; 06/24/19 07:41 AM.

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Re: Trailer Flooring??? [Re: maverickfhs] #5142621 06/24/19 08:42 AM
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SeaJay Offline
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Don't overthink it, put down some thick plywood. Slap some polyurethane on the wood first if it makes you feel better about its longevity.

Re: Trailer Flooring??? [Re: maverickfhs] #5145090 06/26/19 07:40 PM
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philipp10 Offline
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Originally Posted by maverickfhs
Originally Posted by philipp10
Green treated plywood will probably last you more than a decade and mounts easily. How would you mount separate 2 x 4's?

What size or thickness for plywood would be good for motorcycle, fridge or very rare furniture stuff?

There are mounting holes on the frame, so laying one with the other and then bolting them down? Definitely a noob!

depends upon the structure below the wood but I would go 5/8 or 3/4. I used 5/8" and it was plenty. I was glad I went 5/8" over the 3/4 just due the weight savings. Some poster mentioned replacing every few years.....trust me, it will last minimum 10 years. I know because I have a piece of non-treated as a lean-to roof that went 15. On my trailer I didn't even bolt it down, just used wire as tie wraps on the front. It fit so tight I don't think it could come out even without them.

Last edited by philipp10; 06/26/19 07:41 PM.
Re: Trailer Flooring??? [Re: philipp10] #5145095 06/26/19 07:41 PM
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maverickfhs Offline OP
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Originally Posted by philipp10
Originally Posted by maverickfhs
Originally Posted by philipp10
Green treated plywood will probably last you more than a decade and mounts easily. How would you mount separate 2 x 4's?

What size or thickness for plywood would be good for motorcycle, fridge or very rare furniture stuff?

There are mounting holes on the frame, so laying one with the other and then bolting them down? Definitely a noob!

depends upon the structure below the wood but I would go 5/8 or 3/4. I used 5/8" and it was plenty. I was glad I went 5/8" over the 3/4 just due the weight savings. Some poster mentioned replacing every few years.....trust me, it will last minimum 10 years. I know because I have a piece of non-treated as a lean-to roof that went 15.


Thank you, would OSB board would be good too?


2006 Civic EX 209K/AT
2006 Acura TSX 199K/AT
2007 Accord VP 154K/AT
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