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Old 18-02-2018, 02:44 PM   #1
bigroncoleman
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Bilt Hamber Auto Foam via Pump Sprayer staining plastics

Hi all

I've recently been trying this via a pump srayer at approx 4% so 40ml to every 1ltr of water and i have been very impressed with the cleaning ability. But i've noticed it's staining some of the plastic trim. Anyone else noticed this? I didn't leave it dwelling long at all, as soon i worked my way around the car i pressure washed it off and it also wasn't in direct sun light. See pic attached

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Old 18-02-2018, 03:08 PM   #2
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Did you have any existing dressing on the trim before you applied the snowfoam?

I've had some similar staining in the past and I thought it was just me leaving the product on for too long. I cleaned the marks with some mild APC and then applied a dressing.
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Old 18-02-2018, 04:45 PM   #3
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Did you let it dry?
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Old 18-02-2018, 05:29 PM   #4
bigroncoleman
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Thanks for the replies

- the plastics were coated with gtechniq c4 9 months ago
- no i didn't let it dry and pressure washed off as soon as i had got round the car
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Old 18-02-2018, 06:32 PM   #5
cleslie
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Been using Autofoam for years and never had an issue with trim.
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Old 18-02-2018, 06:36 PM   #6
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The only thing I can think it could be is the C4 diminishing.


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Old 18-02-2018, 06:43 PM   #7
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Quote:
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The only thing I can think it could be is the C4 diminishing.


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Poor if so, as durability supposed to be upto 2 years!
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Old 18-02-2018, 09:53 PM   #8
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Poor if so, as durability supposed to be upto 2 years!
Yeah but that’s just what they say, in the real word 9 months ain’t bad.


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Old 19-02-2018, 08:40 PM   #9
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That does not look like a dressing problem. That looks like textbook excess alkalinity on sensitive trim.

You need to bring this to the attention of BH - you followed the instructions so they need to sort it for you.
Nothing in auto-foam will cause this even if applied neat. Which source of alkalinity do you suggest causes this in "text book" cases?
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Old 20-02-2018, 10:27 AM   #10
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Give it a clean with some mild APC and a MF, many times the staining is temporary. I've seen it happen with other foams but don't remember having this problem with Autofoam.
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