What do you coat a trailer deck with?
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Just like your deck, fence or other outdoor wood surfaces, your trailer deck requires a sealant to keep out moisture. Look for a quality sealant designed for heavy-traffic wood and apply it every year. An annual coat of sealant maintains your deck and keeps each board dry, solid and ready for any load.
Should I seal my trailer boards?
Most utility trailers use pine decking. Sealer will help the decking last longer.
How do you treat a deck for a plywood trailer?

The exposed grain and voids along the plywood edges will absorb a lot of water. Seal them first with a coat of regular 2 hour (slow setting) epoxy adhesive thinned with denatured alcohol.
How do you protect a trailer floor?
Here are a few tips to preserve your cargo and utility trailer floors:
- Instead of power washing the floor, sweep or use air pressure to protect the subfloor.
- Inspect the bottom side of floors to determine any damage from overloading.
- Keep doors closed on the trailer at all times.
Is linseed oil good for trailer deck?
Boiled linseed oil is ok, but it will take more than one coat and you will need to renew it periodically. For at trailer deck that is going to be out in the weather or get dirt on it I think you would be better off using a good wood preservative, and get one with UV inhibitors in it to cut down damage from the sun.

What is the best sealer for a wood deck?
Best Deck Sealers
- Thompsons Waterseal Advanced Natural Wood Protector.
- ECO-SAFE Wood Treatment – Stain & Preservation by Tall Earth.
- Rust-Oleum Coppercoat Wood Preservative.
- CabotStain Australian Timber Oil Penetrating Oil.
- Thompsons Waterseal – Transparent Stain.
Is Douglas fir good for trailer decking?
Douglas Fir makes excellent trailer decking as it’s known for being very dimensionally stable, strong, & having good rot resistance. Douglas Fir is also known for having fewer and smaller knots than Southern Yellow Pine.
How do you waterproof a plywood trailer?
You can add some fine sand over the final coat if you need it to be less slick. The exposed grain and voids along the plywood edges will absorb a lot of water. Seal them first with a coat of regular 2 hour (slow setting) epoxy adhesive thinned with denatured alcohol.