Replacing under-hood insulation foam
07-10-2003, 08:58 AM
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Replacing under-hood insulation foam
Hi All,
I just received a new piece of underhood foam from Performance. This new piece of foam has a good adhesive coat on the back already - so should I add adhesive to this, or is the adhesive that's on the back of the foam enough to hold it in place until the next replacement?
Thanks!
Curt
I just received a new piece of underhood foam from Performance. This new piece of foam has a good adhesive coat on the back already - so should I add adhesive to this, or is the adhesive that's on the back of the foam enough to hold it in place until the next replacement?
Thanks!
Curt
07-10-2003, 09:52 AM
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I would recommend using some good spray adhesive Curt. I did mine a few months back and it is starting to come loose in one small area.
I guess the old standby- 3M spray adhesive is good for this. YMMV-
Normy!
'85 S2 5 Speed
I guess the old standby- 3M spray adhesive is good for this. YMMV-
Normy!
'85 S2 5 Speed
07-10-2003, 10:07 AM
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Remove the hood if you use the spray. The mist will find its way onto your car's paint no matter how well you mask and drape. Don't ask me how I know... 
07-10-2003, 10:25 AM
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Curt,
Normally self adhesive products did not need additional glue - and if it did, then what glue is compatible? - Only if it has to be applied on dusty surface, like concrete, it need some primer to prepare the surface
The hood has to be clean and dry and not to cold (min 25 gr. C and the same for the foam) and you can apply your foam without additional glue - Fix it from the middle and out and avoid air pockets
If you are in doubt ask the supplier/manufacture
PS: I have some experience by producing self adhesive products <img border="0" alt="[cheers]" title="" src="graemlins/beerchug.gif" />
Normally self adhesive products did not need additional glue - and if it did, then what glue is compatible? - Only if it has to be applied on dusty surface, like concrete, it need some primer to prepare the surface
The hood has to be clean and dry and not to cold (min 25 gr. C and the same for the foam) and you can apply your foam without additional glue - Fix it from the middle and out and avoid air pockets
If you are in doubt ask the supplier/manufacture
PS: I have some experience by producing self adhesive products <img border="0" alt="[cheers]" title="" src="graemlins/beerchug.gif" />
07-10-2003, 02:50 PM
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I highly reccommend you get the hood as clean as possible. If you don't you will find your new foam coming down after a few hot days. Don't ask how I know... better yet go ahead and ask.
What I found to work reanoably well was to use a shop vac to lipo as much off as possible. (This is where I stopped - bad idea.) Then get some 3M adhesive remover. If you do this witht he hood on, get the spray kind, otherwise the bottle stuff will work better whe the hood is off.
Spray where the old foam is in small sectionas and let it penetrate. Then use a PLASTIC putty knife to gently scapes off the old residue. You may find that you have to reapply the adhesive remover occasionally. It will take a while , but it should come up nice and clean. Then wash throughly with a dish shop like dawn or ivory. This will remove any residue. Dry. Then apply your new hood foam with a helper.
Once applied, you will need to re-wax the car as dish soap (and the adhesive remover) will remove any wax that was on the car. Then you'll have a beautiful hood that you won't be shy to open for others.
Good luck.
What I found to work reanoably well was to use a shop vac to lipo as much off as possible. (This is where I stopped - bad idea.) Then get some 3M adhesive remover. If you do this witht he hood on, get the spray kind, otherwise the bottle stuff will work better whe the hood is off.
Spray where the old foam is in small sectionas and let it penetrate. Then use a PLASTIC putty knife to gently scapes off the old residue. You may find that you have to reapply the adhesive remover occasionally. It will take a while , but it should come up nice and clean. Then wash throughly with a dish shop like dawn or ivory. This will remove any residue. Dry. Then apply your new hood foam with a helper.
Once applied, you will need to re-wax the car as dish soap (and the adhesive remover) will remove any wax that was on the car. Then you'll have a beautiful hood that you won't be shy to open for others.
Good luck.
