How do I rejuvenate a Bonnet Insulation Pad

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Topcat Tomcat
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How do I rejuvenate a Bonnet Insulation Pad

#1 Post by Topcat Tomcat » Wed Apr 07, 2021 4:49 pm

Is there an easy way to rejuvenate a Bonnet insulation pad?

I picked one up yesterday for the 45. It's basically in good condition, but it could do with cleaning.

I shouldn't think that it's a good idea to get too wet. I can't think of an easy way to go about it.
Topcat Tomcat (aka Conductorwomble)

1990 216 GSi Auto 5 Door
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220 GSi turbo
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Re: How do I rejuvenate a Bonnet Insulation Pad

#2 Post by 220 GSi turbo » Wed Apr 07, 2021 7:03 pm

What type of dirt is on it?

General dry dust etc? (in which case I would suggest using a suitable brush and vacuum cleaner)

Or oily grime? (In which case I would suggest an aerosol foam degreaser)

You could still give it a full 'soap and water' treatment, but you would need to allow it to dry thoroughly (might be a possibility when the temperature outdoors finally gets above 15 degrees!) Just don't try scrubbing it too much, because that is what will ruin it.
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Topcat Tomcat
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Re: How do I rejuvenate a Bonnet Insulation Pad

#3 Post by Topcat Tomcat » Thu Apr 08, 2021 7:38 am

It's probably a bit of both. I'll have a go over the weekend. 👍
Topcat Tomcat (aka Conductorwomble)

1990 216 GSi Auto 5 Door
1995 214 iS 3 Door
2001 1.8 Connie 45 4 Door - Wedgewood Blue
2005 1.6 GSi 45 5 Door - Firefrost

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Johnny 216GSi
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Re: How do I rejuvenate a Bonnet Insulation Pad

#4 Post by Johnny 216GSi » Thu Apr 08, 2021 6:24 pm

Topcat Tomcat wrote:
Wed Apr 07, 2021 4:49 pm
Is there an easy way to rejuvenate a Bonnet insulation pad?

I picked one up yesterday for the 45. It's basically in good condition, but it could do with cleaning.

I shouldn't think that it's a good idea to get too wet. I can't think of an easy way to go about it.
You can't get it very wet as it's just recycled materials and it'll soak through and tear.

If you use a brush, use a soft-bristled one as if there's the slightest part of the pad where it's worn through and you catch it with stiff bristles, it'll tear a hole.

I tried a basic wipe over / dust off with a soft brush (and I was very careful, seeing how thin the surface had got in places), then I went straight to Auto Gylm's black spray dye (450ml aerosol).

I did 3 coats and used half the can. I stood the pad up on it's longest side as I prefer spraying vertical surfaces - and I definitely made sure everything behind the pad was masked off, as I'd have dyed a chair, a brick wall and a fair amount of gardening tools otherwise...

If you do a heavy coat it will definitely start to soak through to the other side and you'll see it. It doesn't ultimately matter as you don't see the other side once fitted. The only thing you have to guard against is spraying so much in one go that you make the pad go "soggy."

Leave it a good 1-2 days so the dye is fully dried out before handling and refitting. You don't want to be man-handling a wet pad and have it break up or tear. You also don't want black dye still wet and coming off on anything in the engine bay.

Results are excellent by the way. Like new.
Rover 216GSi K reg. Flame Red over Tempest Grey

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Topcat Tomcat
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Re: How do I rejuvenate a Bonnet Insulation Pad

#5 Post by Topcat Tomcat » Thu Apr 08, 2021 8:49 pm

Thanks. More excellent advice. 👍
Topcat Tomcat (aka Conductorwomble)

1990 216 GSi Auto 5 Door
1995 214 iS 3 Door
2001 1.8 Connie 45 4 Door - Wedgewood Blue
2005 1.6 GSi 45 5 Door - Firefrost

Paul_1978_yorks
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Re: How do I rejuvenate a Bonnet Insulation Pad

#6 Post by Paul_1978_yorks » Fri Apr 09, 2021 11:07 am

I wouldn’t recommend vacuuming it - I did that once and as the pad is very soft it damaged it.
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Topcat Tomcat
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Re: How do I rejuvenate a Bonnet Insulation Pad

#7 Post by Topcat Tomcat » Fri Apr 09, 2021 11:31 am

I had a few minutes spare yesterday, so I tried going over it with a soft brush which seemed to work quite well. There doesn't appear to be any real oil stains, so I might just try the dye.
Topcat Tomcat (aka Conductorwomble)

1990 216 GSi Auto 5 Door
1995 214 iS 3 Door
2001 1.8 Connie 45 4 Door - Wedgewood Blue
2005 1.6 GSi 45 5 Door - Firefrost

Topcat Tomcat
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Posts: 169
Joined: Mon Apr 11, 2016 11:36 am
Location: Worcestershire

Re: How do I rejuvenate a Bonnet Insulation Pad

#8 Post by Topcat Tomcat » Sat Apr 17, 2021 11:32 pm

I had another go at gently brushing and then used a couple of coats of Autobrite Black Fabric Dye. It appears to have covered any stains really well. It fact, it almost looks new for less than a quarter of the 500 ml bottle. I went for this because I'm a bit obsessed with only using aerosols as a last resort! 😇
Topcat Tomcat (aka Conductorwomble)

1990 216 GSi Auto 5 Door
1995 214 iS 3 Door
2001 1.8 Connie 45 4 Door - Wedgewood Blue
2005 1.6 GSi 45 5 Door - Firefrost

carfixmobile
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Re: How do I rejuvenate a Bonnet Insulation Pad

#9 Post by carfixmobile » Sun Apr 18, 2021 4:21 pm

I remember refurbing an engine bay/bonnet insulation pad by using Satin black aerosol spray in the past.

As I recall it looked good and lasted well.

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Re: How do I rejuvenate a Bonnet Insulation Pad

#10 Post by 961tat » Sun Apr 18, 2021 7:32 pm

I have a good one and mint one for sale if that any use .

Topcat Tomcat
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Re: How do I rejuvenate a Bonnet Insulation Pad

#11 Post by Topcat Tomcat » Sun Apr 18, 2021 7:44 pm

Thanks for the offer, but I'm pleased with the way it's turned out.
Topcat Tomcat (aka Conductorwomble)

1990 216 GSi Auto 5 Door
1995 214 iS 3 Door
2001 1.8 Connie 45 4 Door - Wedgewood Blue
2005 1.6 GSi 45 5 Door - Firefrost

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