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Plastic pipe and expanding foam

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geraldthehamster

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Apr 8, 2008, 10:00:24 AM4/8/08
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Could 15mm plastic water pipe be affected by the solvent in expanding
foam?

Thanks
Richard

geraldthehamster

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Apr 8, 2008, 10:21:09 AM4/8/08
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This pipe, in fact:

http://www.screwfix.com/prods/11027/Plumbing/Push-Fit-Fittings/JG-Speedfit-PB-Barrier-Coil-Pipe-25m-x-15mm

diy-newby

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Apr 8, 2008, 10:28:34 AM4/8/08
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"geraldthehamster" <ric...@zulu.myzen.co.uk> wrote in message
news:e6e2fa28-594a-4eb9...@q27g2000prf.googlegroups.com...

>This pipe, in fact:

>http://www.screwfix.com/prods/11027/Plumbing/Push-Fit-Fittings/JG-Speedfit-PB-Barrier-Coil-Pipe-25m-x-15mm

Does the solvent react with the plastic? Getting worried myself now as I
filled a hole in the bathroom where the plumber routed the bath waste
through the wall. I filled the whole with expanding foam.


Ryan

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Apr 8, 2008, 11:28:34 AM4/8/08
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>> Could 15mm plastic water pipe be affected by the solvent in expanding
>> foam?
>>
>> Thanks
>> Richard
>
>> This pipe, in fact:
>
>> http://www.screwfix.com/prods/11027/Plumbing/Push-Fit-Fittings/JG-Speedfit-PB-Barrier-Coil-Pipe-25m-x-15mm
>
> Does the solvent react with the plastic? Getting worried myself now as I
> filled a hole in the bathroom where the plumber routed the bath waste
> through the wall. I filled the whole with expanding foam.

I've used expanding foam on a few jobs in my old house and in this one.
I've never had a problem with the two reacting .... but there is always
a first time for everything :-) If you have a small piece of scrap pipe
spray a bit of foam on it first to check.

I know it probably isn't the answer your looking for but hope it helps.

Take care,
Ryan

Stuart Noble

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Apr 8, 2008, 11:30:57 AM4/8/08
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I don't think it even bonds that well with plastic, let alone attack it.
Certainly the bits I managed to get on a pvc window came off easily enough

geraldthehamster

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Apr 8, 2008, 2:54:27 PM4/8/08
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On 8 Apr, 15:28, "diy-newby" <a...@asas.com> wrote:

> Does the solvent react with the plastic?  Getting worried myself now as I
> filled a hole in the bathroom where the plumber routed the bath waste
> through the wall.  I filled the whole with expanding foam.

Chemicals in polystyrene, and some polyurethane foams, can leach out
the plasticiser from some plastics, making them brittle, is all I
know. Whether my foam (Polyfilla expanding foam) will damage the pipe
I linked to in my previous posting, I don't know.

The potential risk as I understand it is with plastic coated cables,
and possibly plastic water supply pipes - Sppedfit and so on. You
won't have an issue with waste pipes, or uPVC windows and doors,
because they are unplasticised.

Regards
Richard

The Medway Handyman

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Apr 8, 2008, 3:46:30 PM4/8/08
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"geraldthehamster" <ric...@zulu.myzen.co.uk> wrote in message
news:15b13d47-a2c5-4114...@n1g2000prb.googlegroups.com...

I don't know to be honest, but if there was a problem, the packaging on the
foam would be knee deep in disclaimers. Never seen a warning about it.


--
Dave - The Medway Handyman
www.medwayhandyman.co.uk
01634 717930
07850 597257


geraldthehamster

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Apr 8, 2008, 3:53:52 PM4/8/08
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On 8 Apr, 20:46, "The Medway Handyman"
<davidl...@nospamblueyonder.co.uk> wrote:

> I don't know to be honest, but if there was a problem, the packaging on the
> foam would be knee deep in disclaimers.  Never seen a warning about it.

Good point. Especially as the packaging even tells you what kind of
gloves to wear.

Regards
Richard

Pete Verdon

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Apr 8, 2008, 6:17:56 PM4/8/08
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geraldthehamster wrote:

> Good point. Especially as the packaging even tells you what kind of
> gloves to wear.

Yes. I didn't bother during my first experience with said foam, and
ended up with Vulcan ears[1] and plague-victim plastic skin. The second
time, I invested in one of those disposable forensic suits and some PVC
gloves. Some warnings are serious.

Pete

[1] I was filling gaps in the insulation in my shed roof, meaning that I
was basically in a box with foam dripping from the ceiling. I didn't
notice until it hardened that two big drips had landed on my ears.

John Rumm

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Apr 9, 2008, 6:08:19 AM4/9/08
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geraldthehamster wrote:
> Could 15mm plastic water pipe be affected by the solvent in expanding
> foam?

Generally I have not had any problem with plastic pipe. The one area I
did have a problem was with a flexible plastic overseal that made a
joint on a (concealed) WC connector watertight. Turns out when filling a
gap in a bathroom some foam expanded onto this and eat through it. Lead
to a nice party trick where each time you flushed the loo water ran down
the kitchen wall below! Nice.

--
Cheers,

John.

/=================================================================\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\=================================================================/

ARWadworth

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Apr 10, 2008, 12:10:21 PM4/10/08
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"The Medway Handyman" <davi...@nospamblueyonder.co.uk> wrote in message
news:qYPKj.4510$yD2....@text.news.virginmedia.com...

Phone JG and speak to a technical advisor. If they are as good as other
firms they will know.#

Adam

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