Fiberglassing rust in cab
 

So I decided I would go ahead and do a little work to the interior of my 65 cab today and found a little present.. well more than a little..

Welding is not really a possibility for me as I don't own one and I would rather not test my self on this thing. So I thought fiberglass would be a solid alternative, only I don't know too much about that either. Is there some kind of fiberglass patch I can make/buy to put over the problem areas? Ill be wire brushing/wheeling as much of the rust as I can and then using dynomat on the floor of the cab, along with newish carpet.

Any help or advice would be much appreciated. Thanks guys!

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Re: Fiberglassing rust in cab
 

looks like typical inside out rusting from the stock jute padding holding moisture...... [ first thing I remove ] id get some chassie saver on there [ magnetic paints], then sure you could glass the holes.

Re: Fiberglassing rust in cab
 

If you're not talking big holes, you can use POR-15 and fiberglass cloth to seal and patch it up. Start by taking a wire brush and getting all of the lose stuff off. Clean with some wax/grease remover. Then brush on some POR-15 and while wet, put down some pieces of fiberglass cloth. Then brush more POR-15 to soak all of the cloth. Do 3-4 layers of this and then let it dry for 48 hours. Make sure while you are doing all of these layers, you keep everything wet. At this point it will be rock hard and sealed up.

Again, holes smaller then a dime size and not a bunch over a large area but looking at your second picture, that should likely be fine.

Re: Fiberglassing rust in cab
 

I did a little bit of wire brushing but was planning on using a wire wheel to get up more of the rust. Do you think this is too aggressive for this? or would it only make the holes a lot bigger?

Re: Fiberglassing rust in cab
 

wire wheel on angle grinder will make it allot quicker, just watch out as those little wires can come lose and fly at you, at light speed.

Re: Fiberglassing rust in cab
 

Needle scale tool. You can find them at harbor Frieght

Re: Fiberglassing rust in cab
 

My floors are glassed. I got under it with a flashlight and only found one small hole about the size of a pencil lead so not sure why the PO did but glad he did. I'll get under it sometime and blast it and spray some lizard skin on it and call it good.

Re: Fiberglassing rust in cab
 

Did they glass inside the cab and outside??

Re: Fiberglassing rust in cab
 

Just the inside.

Re: Fiberglassing rust in cab
 

I had a hole in the same spot as yours and opted to go the fiberglass route. I wire brushed the whole area down and cleaned everything well, then laid down the fiberglass layers carefully and a few days later covered it in POR15. That was almost five years and 20,000 miles ago, and it has held up very well. I check on it every so often to make sure its all good; if you take your time and do it nice and neat then it will do just fine.