Mix, Thin, and Apply the Epoxy to the Wood Framing
The purpose of the epoxy is to seal the wood from future moisture intrustion. The epoxy also discourages mold growth.
Doug thinned the epoxy 50% using xylene. He used a cheap sprayer to apply the thinned mixture to all surfaces of the subfloor, including the floor joists.
You only need about a quart of resin. Doug bought a gallon but that proved to be too much for this job.
Resin is not cheap so only buy what you need.
Doug mentioned to DoItYourselfRV,
If you need a whole gallon you probably need a new trailer.
The resin takes a couple of days to cure. While waiting for the wood to dry and the resin to cure, Doug added new wood to support the sub floor.
Because he had no choice but to cut out the heavily damaged sections, he added a few new cross supports. One problem he ran into was that the floor joists weren’t made of a standard size of lumber. Thery weren’t normal 2×4 framing.
To fix this, he ripped 2x6s down to 2x3s to make the wood dimensions match.
With some simple notching and cut outs, he was able to recreate a stable and structurally sound support for the new subfloor.
After another spray of epoxy on the new wood he let the fresh epoxy cure again.
Insulation was added after the epoxy dried.
Doug added a new sheet of plywood to the cross members on the interior of the trailer.
More epoxy – and another round of curing.
Doug made sure to seal as much exposed wood as he could. Fortunately there was no water damage coming from the roof of the storage compartment.
He thought it was odd that the floor was so badly rotted but the water hadn’t come from the ceiling.
His conclusion: the previous owner stored the fresh water hose in the compartment without properly draining or drying it before hand!
Some vinyl pieces with self adhesive were used to cover the plywood sub floor.
Some vinyl tile was added to the storage compartment and gaps caulked.
Once Doug was satisfied that the wood had dried and the epoxy cured, he reinstalled the kitchen dinette. Instead of trying to match the existing vinyl flooring with a new piece, he simply added some reclaimed carpet to the under table area.
Repairing rotted wood flooring in your RV doesn’t have to require expert help or a lot of cash. If you discover a small area that needs replacing, you can use the steps in this article to fix the problem yourself. Only simple materials and a few hours of time are needed.
Some of the materials used in this project, including epoxy resin and certain thinning agents, are toxic to humans and animals.
It’s important to always use safe working practices, have good ventilation, and wear appropriate personnel protective equipment.
Doug said that the total cost to repair this damaged floor in his RV was under $200!
Thank you to Doug at CorgiFan for sharing your photos and know-how!