Bunk Board Replacement

[bj25430]

Got a 2006 211 Air Nautique and just this last time i went to lake i notice my left side inner board has rotted out about 2 ft down starting at the top of the board. I need to replace as i have noticed it has scrached the gel coat, and i dont want to have issues. Anyways, i have read alot about not using treated lumber to reading to use treated lumber, so i come to ask the pros out there. Also has anyone used the Ultimate Bunk Boards and how do you like them. I have read some issues where they have scratched the hull up? Also on my trailer the boards are attached by lag bolts. Do i continue to use that method of attachment with the new boards (its worked so far). Treated or not treated? Lag bolts or carriage bolts? and use of ultimate bunk boards? Thanks for your help guys!

[gride]

why would you not use treated on something that is going in the water, with carpet on it that holds moisture?

[bj25430]

why would you not use treated on something that is going in the water, with carpet on it that holds moisture?

From what i am finding on the web, the treated lumber can errode the metal on the trailer and the hardware to hold the boards on. Also that the treatment on the lumber can bleed through and stain the hull. So im just checking to see if that is true on here and what others have used when doing there bunk boards.

[maxpower220]

I have replaced bunks on both trailers and lifts. In my experience, I have used treated lumber and the same bolts that attached it. If the bolts are corroded, then replace with what you prefer. I have not had any problems with treated lumber corroding the bolts or staining the boat.
I have no dealings with ultimate bunks, can't help you there.

[97Brabus]

I replaced my bunk carpet at the beginning of the season and the treated wood (original I presume) was still in decent shape...because it was treated. I saw no damage to the trailer due to the wood. Your trailer should be painted or powdercoated and therefore protected.

If there's any rust on the mounts, spray those bad boys with rustoleum before putting the boards back on. I used all new galvanized lag bolts as the old one's began to rust...the galvanization doesn't last forever. In some of the bolt holes I had to guage up the bolt since I was re-using the existing boards and the bolt holes were a bit loose from the corrosion of the old bolt and natural wood swelling.

Also, don't forget to use good staples for your carpet if you go that route. Stainless is great for all your hardware but harder to find and pretty spendy. I used galvanized on mine.