Sanding, etching and patching the interior pan on my Toro,
Seems to me that POR would come before seam sealer, but I thought I'd ask the experts for an opinion...
Will 3M seam sealer stick to POR? Will POR stick to seam sealer?
Thanks!

 

Make sure metal is clean & relatively rough, sandblasted or even flash rusted - POR likes that type of surface. Apply POR, let fully cure (day or two), seems to like cool temp & not too dry air, then seam seal. Wouldn't hurt to scuff POR w/ a scotchbrite prior to application of sealer to help ensure good adhesion.

 

X2 , just make sure the part is clean like he said or it will peel off after a while

 

Yes and not well.

However when I did my floor, I seam sealed it first then POR15ed it. It went okay, but the POR15 fisheyed on the sealer as it is too smooth. POR15 needs a rough surface to penetrate & stick to.
If done over again, I would POR15 first.

 

seam sealer will stick to piant you dont need to blob it on just a nice smear with a brush will work ., and yes it should stick to por 15 it sticks to prety much any surface that is scuffed with red 3m suff pad i have applied it over primer , paint , body filler , bare metal etc some seam sealers have anti corrosion resistance in them so coating is not needed. A nice tip i learned from a fellow body man years ago is to use tape to make borders around your welds, seams etc and apply it brush it and use an air blower at low psi at an angel about 35 to 45 degrees and fan it side to side to create a factory like apperance

 

I removed my interior down to the floor pan. It is actually very clean except for behind driver's seat where there is a little surface rust.

At any rate, do I need to scuff the floor pan or can I leave as is before I lay down the POR-15??

Thanks
d1

 

I would roughen it up a bit if you are gonna put down por15. It will not stick well to smooth surfaces

 

I por15'd my floorpan and then used seam sealer. I probably could have taken more time with the seam sealer but I think it did the job.

A little trick use foam earplugs from Walmart to plug your seatbelt bolt holes.

 

Cool, thanks for the tip. Will a quart of POR-15 cover the floor pan??

d1

 

I used the "Floor pan Kit" they sell it has 1 qt por15 black, silver and and 1 qt topcoat and some por-mesh (fiberglass) por-putty. It has the metal ready and marine clean.
I used the mesh in one small hole in the floor pan and it worked great. I didn't use the putty on anything yet.
With the extra mesh and some por15 I repaired two rips in the masticated rubber under bumper, that worked awesome.
You could buy the stuff individually.

http://www.por15.com/FLOOR-PAN-TRUNK...uctinfo/FPTRK/

 

Yes, even if you spill half of it...
It went a long way for me - I think I used 3 or 4 of the 4oz cans and I even double-coated.