The Ford Barn

russcc · 02-29-2020, 06:48 AM

A friend has '47 Coupe and the trunk floor is a little rusty in some places and porous. His coupe is a driver, not a restoration.

What would be a good way to seal it watertight ? We were considering that bed liner material or fiberglass cloth, & resin. What's your experience, and what's the best way to prep the surface ? Thank you Forrdbarners.

cadillac512 · 02-29-2020, 07:50 AM

I've had good results using coarse sandpaper and a wire brush to remove loose rust and dirt. Then I brush on a coat of POR-15, while wet lay on a layer of fiberglass cloth, followed by another saturating coat of POR-15. The resulting patch is very durable, tough and unaffected by moisture.

Terry

chap52 · 02-29-2020, 07:50 AM

POR15 will do the job. Kinda Spendy and might be "overkill".
I just did a pick-up bed with Raptor spray in liner. Very impressive stuff. The p/u bed kit is about $100 (Amazon, actually TCP Global) and comes with the spray gun and 4 liters of product w/hardener. I would think you would only need 1 liter for a trunk. You can purchase it directly from TCP Global and just get one bottle, hardener and spray gun. Look for their cheap gun not the $80 one. Or if your in Arizona you can borrow mine.
The secret is in the prep. Sanding and a good wipe down with prep solvent a must. Possibly even a primer coat.
TCP Global, Harbor Freight and even Wal Mart and Auto Zone have a rattle can spray that seems to cover well. I don't believe it is as durable as the Raptor liner, but would seal OK?
Chap

https://tcpglobal.com/pages/search-r...ptor+Bed+Liner

TJ · 02-29-2020, 10:25 AM

Use POR-15 and the POR-15 cloth. Have used it before and it works good. Brush it on, no need to spray it and have plenty of good ventilation (preferably use it outside.)

russcc · 02-29-2020, 11:02 AM

Thank you all for your ideas & sharing your experience. I have used both POR 15, and SEM Rust shield, with which you can use their hardener that speeds up the cure, toughens the paint & bumps up the gloss. I might try the fiberglass cloth w/the SEM.

50fordcoupeman · 02-29-2020, 01:21 PM

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On my avatar driver quality car, the spare tire well had several small pinholes in the bottom. I cleaned up the rust as mentioned above and then just used fiberglass and gel and then painted it. I didn't go to the fuss of cutting it out and welding a replacement well. Worked good and no leaks anymore.

02-29-2020, 06:48 AM	#1
russcc Senior Member Join Date: May 2010 Posts: 2,871	sealng trunk floor A friend has '47 Coupe and the trunk floor is a little rusty in some places and porous. His coupe is a driver, not a restoration. What would be a good way to seal it watertight ? We were considering that bed liner material or fiberglass cloth, & resin. What's your experience, and what's the best way to prep the surface ? Thank you Forrdbarners.

02-29-2020, 07:50 AM	#2
cadillac512 Senior Member Join Date: Apr 2019 Location: Kansas Posts: 921	Re: sealng trunk floor I've had good results using coarse sandpaper and a wire brush to remove loose rust and dirt. Then I brush on a coat of POR-15, while wet lay on a layer of fiberglass cloth, followed by another saturating coat of POR-15. The resulting patch is very durable, tough and unaffected by moisture. Terry __________________ "It don't take but country smarts to solve the problem" (Smokey Yunick) '41 Merc Town Sedan / 260" 8CM engine '66 Fairlane four door / "warmed up" 302

02-29-2020, 07:50 AM	#3
chap52 Senior Member Join Date: Jun 2013 Location: Marana Arizona Posts: 1,776	Re: sealng trunk floor POR15 will do the job. Kinda Spendy and might be "overkill". I just did a pick-up bed with Raptor spray in liner. Very impressive stuff. The p/u bed kit is about $100 (Amazon, actually TCP Global) and comes with the spray gun and 4 liters of product w/hardener. I would think you would only need 1 liter for a trunk. You can purchase it directly from TCP Global and just get one bottle, hardener and spray gun. Look for their cheap gun not the $80 one. Or if your in Arizona you can borrow mine. The secret is in the prep. Sanding and a good wipe down with prep solvent a must. Possibly even a primer coat. TCP Global, Harbor Freight and even Wal Mart and Auto Zone have a rattle can spray that seems to cover well. I don't believe it is as durable as the Raptor liner, but would seal OK? Chap https://tcpglobal.com/pages/search-r...ptor+Bed+Liner Last edited by chap52; 02-29-2020 at 07:57 AM.

02-29-2020, 10:25 AM	#4
TJ Senior Member Join Date: May 2010 Location: Napa,California Posts: 6,037	Re: sealng trunk floor Use POR-15 and the POR-15 cloth. Have used it before and it works good. Brush it on, no need to spray it and have plenty of good ventilation (preferably use it outside.)

02-29-2020, 11:02 AM	#5
russcc Senior Member Join Date: May 2010 Posts: 2,871	Re: sealng trunk floor Thank you all for your ideas & sharing your experience. I have used both POR 15, and SEM Rust shield, with which you can use their hardener that speeds up the cure, toughens the paint & bumps up the gloss. I might try the fiberglass cloth w/the SEM.

02-29-2020, 01:21 PM	#6
50fordcoupeman Senior Member Join Date: Mar 2016 Location: LaGrande Oregon Posts: 866	Re: sealng trunk floor Sponsored Links (Register now to hide all advertisements) On my avatar driver quality car, the spare tire well had several small pinholes in the bottom. I cleaned up the rust as mentioned above and then just used fiberglass and gel and then painted it. I didn't go to the fuss of cutting it out and welding a replacement well. Worked good and no leaks anymore.