Help/Advice on Boat Restore/Repair Project

weweber3

Cadet
Joined
Apr 30, 2009
Messages
14
I have read just about every post in the lengthening boat thread - good stuff. I think my questions are basic (maybe not?) and I am getting hung up on options and some terminology.

My biggest problem is not really knowing WHAT to buy and HOW much. Based on the lengthening thread I think I understand what to do from a labor perspective.


I am looking to do the following in 13-14 ft Crestliner, late 60's early 70's model -
1. Remove all stringers, they are shot
2. Inspect transom - can cut away fiberglass from inside to inspect
3. Reinforce the hull of the boat with fiberglass - from transom to bow, up the sides a little as well
4. Replace stringers using composite wood (trex, etc)
5. Put new deck in

Questions -
1. the hull of the boat is flexing already when i walk on it with 1 center stringer removed. How can i remove all the stringers and not have the hull flex or deform? support from bottom? support inside the boat? Do I just need to lean over the side of the boat to do the fiberglass work?

2. If the transom shows some rot, can I use these products? Again, I would cut away from the inside and apply the products that way
http://rotdoctor.com/glass/GLrotrepair.html

3. What exactly do I need here? roving with epoxy? roving with poly resin? And how much roving and how much poly/epoxy? The hull measure 9ft by 5 ft (roughly) and up into the bow is another 3ft wide by 4ft wide section. I thinkg I want to do 2 layers... do I need to let the first layer set and then ruff/scuff to add the second layer? Or do I do the second layer after the 1st layer is tacky? Do I use foam rollers to spend the epoxy/resin over the roving?

4. I assume that when I let the fiberglass on the hull set, I will need to ruff/scuff where the stringers will go, then use PL adhesive to set the stringers over the new fiberglass floor and then use fiberglass cloth (mat? roving?) to secure the stringers in place?

5. The deck - haven't decided what to do here. Can I apply the resin to exterior grade plywood and that will last 3, 5, 10 years with covering and care?

Misc Questions -
- how bad are air bubbles? I know you have a zero tolerance for them, are they THAT bad to have a tiny bubble here and there?

pictures here - http://shawndanlakehouse.wordpress.com/pictures/boat-pictures-floor-removal/

Thank you,
Bill
 

oops!

Supreme Mariner
Joined
Oct 18, 2007
Messages
12,932
Re: Help/Advice on Boat Restore/Repair Project

I have read just about every post in the lengthening boat thread - good stuff. I think my questions are basic (maybe not?) and I am getting hung up on options and some terminology.

My biggest problem is not really knowing WHAT to buy and HOW much. Based on the lengthening thread I think I understand what to do from a labor perspective.


I am looking to do the following in 13-14 ft Crestliner, late 60's early 70's model -
1. Remove all stringers, they are shot
2. Inspect transom - can cut away fiberglass from inside to inspect
3. Reinforce the hull of the boat with fiberglass - from transom to bow, up the sides a little as well
4. Replace stringers using composite wood (trex, etc)
5. Put new deck in

Questions -
1. the hull of the boat is flexing already when i walk on it with 1 center stringer removed. How can i remove all the stringers and not have the hull flex or deform? support from bottom? support inside the boat? Do I just need to lean over the side of the boat to do the fiberglass work?

to do the strings.....you must have the boat properly supported from underneath......uasually a roller trailer isnt good.....bunks are better as the hull is supported longitudenally. make sure there is no "hook" in the supports

2. If the transom shows some rot, can I use these products? Again, I would cut away from the inside and apply the products that way
http://rotdoctor.com/glass/GLrotrepair.html

search core sample before you cut it away....but any moisture in the core sample is a failure
and....just use wood bud.....any composite product you put in the boat will just increase the cost exponentially.....standard exterior grade plywood will last well past 40 years if glassed properly...(your boat is 40 years old and it lasted all this time just the way it was....right? :))


3. What exactly do I need here? roving with epoxy? roving with poly resin? And how much roving and how much poly/epoxy? The hull measure 9ft by 5 ft (roughly) and up into the bow is another 3ft wide by 4ft wide section. I thinkg I want to do 2 layers... do I need to let the first layer set and then ruff/scuff to add the second layer? Or do I do the second layer after the 1st layer is tacky? Do I use foam rollers to spend the epoxy/resin over the roving?

reinforcing your hull....(in your case is not nessary at all.....your boat has been good for 40 years....just the way it is......however is you really want.....one or two layers of csm will be more than enough.....other wise you will just be adding unwanted weight.....poly resin is fine....your boat will never know it....and as previously said...your boat is a poly boat and it lasted many years being just poly.....you will never see or use what epoxy will do for you......

4. I assume that when I let the fiberglass on the hull set, I will need to ruff/scuff where the stringers will go, then use PL adhesive to set the stringers over the new fiberglass floor and then use fiberglass cloth (mat? roving?) to secure the stringers in place?

any place you add fiberglass,,,,,you will need to rough and scuff.....the surface to be glassed needs to be scuffed and cleaned and aceitoned before you glass it


5. The deck - haven't decided what to do here. Can I apply the resin to exterior grade plywood and that will last 3, 5, 10 years with covering and care?

if you add resin....you must add glass.....resin is very brittle without glass....it will just crack with out it

Misc Questions -
- how bad are air bubbles? I know you have a zero tolerance for them, are they THAT bad to have a tiny bubble here and there?

bubbles are a evil that just wont go away....see the hull thread for proper wet out procedures....that will save you a lot of headaches and roller work



Thank you,
Bill

hope that helps bud.

cheers
oops
 
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