On 20/05/2021 10:39, Martin Brown wrote:
On 20/05/2021 10:28, nightjar wrote:
On 19/05/2021 20:21, Scott wrote:
On Wed, 19 May 2021 19:43:27 +0100, nightjar
wrote:

On 19/05/2021 19:13, Scott wrote:
I am wondering if anyone has tried using Hammerite paint on a plastic
pipe.Â* Mr Google seems to think it is okay.Â* For context, I am
painting a steel fence so it would be very convenient to use the same
paint on the pipe even if it is over-specified but not if it is likely
to cause problems.


Probably depends upon the Hammerite you are using and the plastic the
pipe is made from :-)

IIRC, the original Hammerite used xylene as a solvent. Xylene badly
degrades uPVC, a common material for pipes. However, there are now
water
based Hammerite paints, which are unlikely to affect any plastic.

Thanks.Â* I think this is in between, as petroleum based paint, so it
sounds like I should be careful.Â* What is the recommended paint for an
outdoor pipe.Â* (One of my neighbours has put up a white pipe when all
the drains etc are black.)


I have always used oil based household paint without problems. If the
paint has a list of constituents, you can check them for compatibility
with PVC he

https://www.calpaclab.com/pvc-polyvi...ibility-chart/


That is a very useful reference for edge cases. I find that gloss paint
and particularly black paint on south facing pipes flakes off after a
while. Then it is facing into prevailing weather and strong sunshine.

Paint film and PVC don't expand at quite the same rates is my guess.



FWIW Sadolin Classic was still going strong on an elderly relative's
well-weathered gutters and downpipes when it was sold 7 years after I
applied it (there being nothing else readily available to match the
soffits etc).

--
Robin
reply-to address is (intended to be) valid