Slide Floor Problem

[Jiver1951]

2004 Montana 5th Wheel. Water seepage has caused a rotted section on one end, entire floor needs R&R. Repair facility wants $5000.00 to do repair. I can do this repair myself, but need to find source for a 4' x 12', 3/4" thick piece of plywood. Keystone can supply the piece for $693.00. Any other sources out their that anyone knows about?

[RV Wizard]

Hello and We are glad to have you join us here and we look forward to reading of your adventures and experiences. I am sure you will enjoy our website and forums. Good luck, stay safe and keep us posted.
I will make the floor using 3/4 Avantec plywood and biscuits in the seam. If there is a cabinet or dinette bench I can overlay a piece on the seam I will do that as well. Then cover with vapor barrier. Hopefully your wall has not gotten hit . Pics of your progress will be interesting to some of our members. Thank you.

[dabrooks]

Is there any way you could use tongue and groove 3/4 plywood and glue the seam?

[RV Wizard]

I don't think the tongue and groove will provide enough strength.

[jacwjames]

Scarfing Plywood - NC Boatbuilder.com

Here is an option, it discusses using a scarf joint on 3/8" plywood, but using the same methodology you could use it to mate 3/4" pieces together. The glue is probably the most important part of this. It would also make sense to have the joint directly over one of the floor joist supports.

[Boogie_]

Laminate three 4'x8'x⅜" sheets into one 4'x12'x¾" sheet.

[twogypsies]

Hope you have the water leak fixed and tested before replacing the floor. Good luck.