Yet another POR15 question

So I'm reading the POR 15 website and it appears they have a repair solution for POR 15 that basically patches the floor with fabric and paint over it. The paint hardens and you have instant floor pan.

Am I reading this right?

Has anyone tried this method? Sounds pretty scary to me.

Ive done something similar with my dog legs.
A little piece of fiber mesh and painted with silver por15 over it. hard as rock and hole closed. Yes its almost a DPO situation but best i could do at the moment.

It's fiberglass with POR-15 as the resin.

OK so for structural parts such as sills and floor pan, does it seem wise to repair them with this stuff?

NO, not for stuctural part. Small holes in the floor and trunk, sure. In fact I did use some on the trunk floor of my car.

I bought the POR-15 fabric - don't! Unless it's cheaper then the fiberglass cloth that you can get at Homedepot. It's the same stuff. ...But I did use the POR-15 as the resin and it worked great.

Would it work on holes as shown in the following pictures?





This is not an MG by the way, my MG shell is mostly rust free.

Work? - yes. ....But I would replace the metal. Those holes are from the inside.

Was about to do the same as Carl repair the small holes in my floor with fiberglass mat and Por15 and then Por15 the whole floor area.. The only question I have is - is the black the same formulation as the silver

Yup! ..as far as I know.
I wouldn't do an area larger then a $1 bill with the mat.

silver is supposed to have metal in it. atleast thats what it says on the website. same price so i bought 4 cans of silver 2 cans of black.

Of course you don't want to even think of patching "over" rust. You have to remove it or neutralize it somehow and those pics show a lot of surface rust that's going to come back and haunt you.

I'd remove as much rust as possible by cutting out the bad metal, wire brush what remains, treat it with rust killer inside and out -- then I'd decide if the holes could support a fiberglass patch. I agree, anything too big (a dollar bill size or whatever) really ought to have metal welded in -- and never anything structural, of course.

Smallish holes that have had all rust removed or neutralized ought to be reasonably okay. Of course, it's what's inside the panel that you really have to worry about . . . I've tried wirebrushing, etc., only to have the rust reappear in a few months. It's always best to have it cut out.

The holes I am going to patch are about the size of a quarter so should not be a problem and were probably the result of trapped moisture under the drivers feet.

Thanks, I actually hit that area already with a wirebrush attached to an angle grinder.

There is obviously more work to be done :-)

Another way that works well is to go to Home Depot ar some other place and buy rust nuetralizer follow the instructions and then buy a bondo fiberglass GEL kit from any auto part store. that kit consists of fiberglass matting and a special green thick gooey stuff that you mix with hardner. If the hole is dollar bill size I would first put down the bottom coat of gel then some metal window screen then the matting then the top coat of gel.you have to have everything ready all the matting and screening pre cut to size because when you mix the green gel with the red hardner due to the heat outside it cures really fast. When its cured that stuff is really strong just make sure all the rust has turned black and the surface is clean before you use the gel