Pressure Treated Wood + Carpet + Aluminum Hull = A recipe for severe corrosion!
Pressure Treated Wood + Carpet + Aluminum Hull = A recipe for severe corrosion!Pressure treated wood contains copper, which is a more noble metal than aluminum. Combine that with an electrolyte like the saltwater trapped in your carpet and you have a perfect environment for dissimilar metal corrosion. This corrosion will thin and eventually eat holes in your aluminum hull. This is not easily repairable, especially if the corrosion happens along the whole length of the bunk.
For further reading on dissimilar metal galvanic corrosion, read up on it with Steve D’Antonio’s blog post here.
Unraveling the Corrosion Mystery | Steve D’Antonio Marine Consulting (stevedmarineconsulting.com)
How to prevent it!
Protect your hull with HDPE glides and you wont have to worry. The aluminum will be isolated from the wood and carpet, and HDPE doesn’t hold water like carpet.
Halk Marine sells cut to length HDPE trailer bunk glides. Click here to go to the shop.
