My trunk has a small, rusty hole that rotted through to the ground and it's really not bad besides the small hole. But, I want to cover it up and maybe the rest of the trunk too...

So I thought of Flex Seal, it's a rubberized leak sealer in a can for those who don't know what it is. So, my questions are:

1. Does anybody know if it will work and stay on there and become atleast semi-permanent?

2. Does it stink for a while? It has many harmful chemicals in it that you shouldn't breathe and I need to know if it dries and airs out quickly. I don't want my hatch to smell like spray paint for weeks lol

TL:DR, Flex Seal my trunk to cover a rust hole, will it work? Will my car stink like **** for weeks if I do?

 

I have used just run of the mill rubber undercoating in my trunk before with no issues. Just did it on a dry day and left all the windowns down and trunk open so it could air out and dry for the day. I would personally try to fill the hole with some epoxy or JB weld and coat over it.

 

get rid of all the rust and epoxy primer it first, or it will just spead.

 

Wouldnt be a bad idea to cover it from the outside too.

 

Will do.

Good idea, thanks.

Anyone else know if the smell will fade in less than a day?

 

That FlexSeal is only undercoating

that schmuck just found a new way to market it.