what do i need to patch the inside hull of a sunfish
- Feb 21, 2022
- 2
- #ane
I've got a (belatedly 80s/early 90s?) Sunfish that'southward developed spider cracks in the fiberglass hull. Information technology has been stored for a long time on a trailer and does get water infiltration into the hull. I plan to give it an a like i to a friend but don't want to give them a huge trouble. Is this something I should address and if so, does this sort of repair cost a lot? Its in at least two areas, each nearly the size of a playing menu.
Thanks,
Mark
- February 21, 2013
- 4,138
- #2
Welcome to the forum!!
Ouch.......below is a procedure to remove them:
- Move your boat to a well-ventilated area where information technology can be sheltered overnight.
- Clean the area. Clean the cleft expanse with acetone. Use a rag to protect your fingers and to do a thorough job of removing dirt and debris that might accept caught in the cracks. Even if yous can't meet all of this debris, information technology has the tendency to build upwardly and lead to discoloration.
- Sand downwardly the surface area. An electric sander is optional hither, especially if the affected area is nevertheless pocket-sized. Experience free to brand a judgment call here, as sanding by hand is easier and more affordable, but it may take y'all more than time.
- Remove sanding dust. Once finished, remove all the dust from the sanding with the rag and acetone in one case more than.
- Tape off and apply gel coat. After masking off the area with painter'south record, apply a paint brush to employ gel coat. Utilise a marine grade fiberglass resin and be sure to keep it in a separate container until it's ready to utilise. Once information technology is, make certain that the brush doesn't accept whatsoever loose bristles, and employ the gel glaze carefully after following the directions on the gel coat bundle.
- Dry, sand, clean, rubbing compound, wax and buff. After allowing the gel coat to cure overnight, yous can smoothen the area out with sandpaper, make clean out the sanded area, and so both prime number and paint the fiberglass if the color'due south off.
- Feb 21, 2022
- 2
- #3
Thank you. That's extremely helpful. I was worried information technology is deeper than the surface.Welcome to the forum!!Ouch.......below is a procedure to remove them:
More than detail in this video: How To Fix Spider Cracks, Hairline Cracks, and Crazing in Gunkhole Gelcoat [MATERIALS Listing] | BoatUS - Bing video
- Move your boat to a well-ventilated area where information technology tin be sheltered overnight.
- Clean the area. Make clean the crack expanse with acetone. Utilize a rag to protect your fingers and to practice a thorough chore of removing dirt and debris that might have caught in the cracks. Even if y'all tin can't see all of this debris, it has the tendency to build up and atomic number 82 to discoloration.
- Sand down the surface area. An electric sander is optional here, especially if the affected expanse is still small. Feel free to make a judgment telephone call here, as sanding by paw is easier and more affordable, but it may have you more fourth dimension.
- Remove sanding dust. One time finished, remove all the dust from the sanding with the rag and acetone once more.
- Record off and use gel coat. After masking off the area with painter'south tape, use a paint brush to apply gel coat. Use a marine form fiberglass resin and exist sure to keep information technology in a separate container until it'due south set to apply. Once it is, brand sure that the brush doesn't have any loose bristles, and apply the gel coat carefully after following the directions on the gel coat package.
- Dry, sand, make clean, rubbing compound, wax and buff. Later allowing the gel coat to cure overnight, you can smooth the area out with sandpaper, clean out the sanded expanse, and then both prime and paint the fiberglass if the color'southward off.
Just out of curiosity, could freezing of the water inside the hull contribute to my problem or cause other problems? I've never checked to see if the water froze, merely where I live, we get down beneath freezing many times during the winter.
- Oct 22, 2014
- 16,942
- #4
Welcome Beagle to SBO.Is this something I should address and if so, does this sort of repair cost a lot? Its in at least two areas, each about the size of a playing carte du jour.
What level of stop are you attempting to accomplish? This will play heavily into the calculation of Costs.
- Bristol is a standard of - As good or better than originally delivered past Manufacturer.
- Audio with colour shut to the aged surface and boat is fully functional
- DYI Aged Expert Color of repair not a cistron. Good repair of damage accomplished.
- Aug 21, 2017
- 48
- #5
It's highly unlikely that water within your hull is contributing to the trouble. The hull and deck are supported from within with blocks of foam. Water inbound the hull is mutual. That's why there is a drain plug on the side of the hull. Unless the hull was completely filled with water, it will not cause a problem if information technology freezes. In that location is ample space betwixt the blocks of foam within the hull for ice to expand into.Merely out of marvel, could freezing of the h2o inside the hull contribute to my problem or cause other problems? I've never checked to see if the h2o froze, but where I alive, we become down beneath freezing many times during the winter.
- Feb 21, 2013
- four,138
- #half-dozen
In response to your outset question, it is hard to say. Spider cracks tin occur due a manufacturing defect, i.due east., structural problems or astringent impact damage How to Set Cracks in Gelcoat on Gunkhole Surfaces – Pensacola Shipyard. If you have water inside the hull, you volition want to dry it out before you brand the repair............could freezing of the h2o inside the hull contribute to my trouble or crusade other problems...........
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Source: https://forums.sailboatowners.com/threads/spider-cracks-in-sunfish-hull.1249932594/
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