Originally Posted by
Tom Bender
Dave, Going to Oak will mean you can use thinner material but it's going to cost more and be a little harder to source. Also Oak will develop thousands of small checks in the sun so it will benefit from repeated treatment.
You might benefit from better quality pressure treated Pine (less knots)
A lot depends on how you keep your trailer. If you keep it in a rot inducing condition (full of 10 year old firewood) wood might not be the best choice.
Scott, The closed tyloses in White Oak make it rot resistant. Not sure what the tradeoff would be using Red Oak well treated.