Fixing Damaged Floor

I am looking for suggestions on how to repair a damaged floor. It is not wood, it is fiberglass board which has some type of foam in the middle. Basically a layer of fiberglass 3/8" thick foam and then another layer of foam. I think the PO dropped something heavy on it and it has a small deflection when you step on it, I am replacing the carpet so I want to repair the area which is 18" long by 7" wide.   

I am hoping to do the repair this weekend, is there any place that would have the supplies?   I have a west marine and overtons near me, just not sure which one works well and where to get reinforced fiberglass.   Their websites are not that helpful.

Thanks for the advice guys. I will post some pics when I am done.


I find the osc very handy indeed..

Tom,
Keep us informed and do post some pictures of the progress.
BTW, unless you're looking to purchase a tube, I wouldn't even consider going into an Overton's!

As always thanks for the great advice. The floor is fixed (will post some pics this weekend). As I am getting ready to install the carpet I am trying to figure out what to do with the existing holes in the floor for dog house hardware, seat etc. should I just try to reuse (guessing they will be difficult to locate once carpet is in) or should I fill them in with epoxy and drill new ones when ready. It is a fiberglass floor with foam between the top and bottom layers.   

Btw did find a good use for the overtones gift card someone gave me as a present - I bought a slalom ski bag for my son's new HO TX ski

Here is a pic of the repair.

I had a difficult time finding filler material to replace the old foam. The best I could find was the high density stuff at Lowes used as house insulation. I had a issue because it was not the same thickness as the original so I had to shave it down. Once I got the layers of fiberglass on, I drilled several holes into the repair area just large enough to insert the tube from a spray can of foam,   I sprayed in a small amount of "foam in a can" for fill any voids then put two layers of fiberglass to seal up the holes.

In my discussion with a marine carpet installer he gave me a tip about some adhesive remover for removing difficult carpet. I was having a hard time with one piece of carpet on a seat base. The product was Sentinal 626 - it worked great! It looks like they make something specific for outdoor carpet 747, but the shop I went to did not carry it,

Any ideas where I can get some of the hardware for the doghouse base (the ones on the inside of the base which attach the base to the floor and hold it in place)?

I will check with Christines, .

The shop I bought the adhesive remover from was not sure if the 626 would work well on the boat carpet, adhesive but I thought I would give it a shot. Glad I did as I could not move the carpet at all, Once I used this stuff it peeled right off.    

From the website: 626 Carpet & Sheet Vinyl Adhesive Remover
SENTINEL 626 CARPET & SHEET VINYL ADHESIVE REMOVER is a powerful, biodegradable, formulation designed specifically for quickly removing latex, acrylic, and pressure-sensitive adhesives from concrete, terrazzo, ceramic, and vinyl tile or wood substrates. Use 626 to remove tan or beige colored glues, linoleum backing and vinyl sheet goods adhesives. 626 cleans up with water, is non-hazardous, and requires no dilution, so it's ready to use.

I would have preferred to use the 747 but they did not carry it. link to website Sentinal