Floor cracks in fiberglass

[lenny2113]

Hi All !<br />I have a 26' Formula boat that has a small cracks on the floor. I noticed that some of those cracks are spreading even further. What could I do to make it look new again?<br />Is there a deck paint that could seal cracks?<br /><br />Thanks.

 

[qaztwo]

Re: Floor cracks in fiberglass

I'm not sure about fiberglass but on metal you stop drill a crack. It prevents the crack from speading past the hole. Once you have all the cracks drilled you could take a grinder and making a very quick and not very deep cutwith the edge of the grinder along the cracks. Then go back through and fill in with epoxy. Sand and paint. <br />Might work might not, never tried it. Good luck though.

 

[18rabbit]

Re: Floor cracks in fiberglass

That’s pretty much how it is done. If the cracks are a result of a one-time incident (impact) not a problem. If it is a design flaw and they are cause by flexing, etc you should also fix the flaw or the cracks may return.<br /><br />I use a Dremel with a tungsten bit (#9931) and follow the crack. The bit creates a groove just the right size/shape for accepting epoxy and the edges of the fiberglass will have a perfect tooth for the epoxy to adhere to.