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Home > General Chat > Using expanding foam to seal rear bulkhead (road car)

turbodave16v
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SouthPark, Colorado

26th Feb, 2006 at 11:54:30pm

Any thoughts on this?
I'm not building it to FIA specs; it's a road car.

I just want something to seal (mostly against smells) the boot area.

Incidentally - I just tested a bit of 'old' foam that i installed around my garage - and whilst it says 'flammible when cured' on the tin; it didn't exactly burst into flames...
It just caught fire and slowly burned.
Also, I guess if I had a fire that had started in the boot, how quickly the foam sealing the edges of my bulkhead caught fire is the least of my worries!!!*laughing*

On 17th Nov, 2014 Tom Fenton said:
Sorry to say My Herpes are no better


Ready to feel Ancient ??? This is 26 years old as of 2022 https://youtu.be/YQQokcoOzeY



Tom Fenton
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Fearless Tom Fenton, Avon Park 2007 & 2008 class D winner

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Rotherham South Yorkshire

27th Feb, 2006 at 12:42:11am

The stuff for doing this job Dave is intumescent sealant. This comes in a caulking gun tube, and is similar in consistency to seam sealer. But it is for building applications and does not burn.
You can buy it from Demon Thieves for an extortiante price, or otherwise you can visit a builders merchant or somewhere like Screwfix and get the same thing for a lot less.
I used to do this on my grass cars as you had to have a sealed bulkhead between the fuel tank and driver.


On 29th Nov, 2016 madmk1 said:

On 28th Nov, 2016 Rob Gavin said:
 I refuse to pay for anything else


Like fuel 😂😂

Ben H

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Melton Mowbray, Pie Country

27th Feb, 2006 at 12:49:59am

We used expanding foam to seal our rear bulkhead. Then we put self adheasive metal tape over the top. It worked fine and looked quite neat.

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Vegard

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I pick holes in everything..

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Norway

27th Feb, 2006 at 07:49:25am

All the racers in Norway use fibreglass etc and seal it up. I'm not into that fibreglass stuff, so any other method would be perfect to know. FIA-OK of course...

On 13th Jul, 2012 Ben H said:
Mine gets in the way a bit, but only when it is up. If it is down it does not cause a problem.

turbodave16v
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SouthPark, Colorado

27th Feb, 2006 at 12:35:22pm

Well, it's done now. A VERY easy job. We'll see how it looks after trimming it back tonight.

On 17th Nov, 2014 Tom Fenton said:
Sorry to say My Herpes are no better


Ready to feel Ancient ??? This is 26 years old as of 2022 https://youtu.be/YQQokcoOzeY



AlexF2003

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Newbury, Berks

27th Feb, 2006 at 02:19:40pm

just cover it in fibre glass if your worried!

Alex

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Nic

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Herefordshire

27th Feb, 2006 at 03:46:07pm

strangely i was thinking about this today

how do they seal the large gaps between the sides of the seat and the panels

is it using the stuff tom is on about?
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