Laminating transom wood

[BOWTECH.JUSTICE]

Replacing my transom on 92 celebrity i/o open bow. I have been researching but its just as easy to ask the experts on here. Im ready to start putting wood back in place and its gonna be a tight fit. Anyways, is it ok to laminate 2 pieces of 5/8" and 1 piece of 1/2" or is it neccessary to try and limit it to just 2 pieces of ply. The thickness of my outer shell is 1/4".

 

[gm280]

Bow, the usual transom lamination is two pieces of 3/4" exterior grade plywood. And most use a water proof glue in between. Titebond III is a really good glue for that as well. What is your total thickness going to be?

 

[ondarvr]

It doesn't make any difference in how many layers you use to get the correct thickness.

 

[alldodge]

+1 ^, there is a guy on OSO which does it full time professionally and says all the offshore high power boats are done with more layers to add strength.

 

[BOWTECH.JUSTICE]

Mercruiser spec is 2" to 2 1/4". Alright guys, Im glad to hear that . will make my life easier. Thanks

 

[JASinIL2006]

If you're worried about strength, you should be more concerned with the quality of the plywood used than with the number of pieces. Good quality plywoods, like marine plywood or the less-expensive Arauco plywood, have fewer voids in the plies, and they use more plies/layers than cheaper types of plywood (e.g., standard exterior plywood). That being said, lots of guys here have rebuilt using standard exterior plywood and their boats seem to have held up...

 

[harleyman1975]

Just remember you have 1/4 inch glass on outside 1 1/2' wood and another 1/4 inch glass on inside to = 2" some guys have overdone it on the plywood. 5/8x2 only gives you 1 1/4 on the wood. leaving you 1/4 to 3/8 shy of nominal thickness.