Yellow discoloration on fiberglass?

[DoctorThunder]

I have a 15 year old walkaround...the outside of the hull is in great shape..just needs a good wax job...since the boat is a walkaround...99% of the inside of the boat is fiberglass...It's has all discolored yellow...I've tried various cleaners with no luck...oh yeah, on the floor on the non- skid areas is some sort of "black" ground in stain? that's been giving me problems too...<br /><br />thanks for the advice...

 

[jim dozier]

Re: Yellow discoloration on fiberglass?

You might try some muriatic acid (hydrochloric acid) available at Home Depot and hardware stores. Try it in a small area. If its yellow because of rust the acid will remove it and won't hurt it. If it works wear gloves and goggles and beware the fumes.

 

[phantoms]

Re: Yellow discoloration on fiberglass?

If that doesn't do it, some Comet and a scrub brush should.