Outdoor wall pain pealed off in patches over winter

boardtc · 11-04-2025 03:41PM #1

I primed this wall with PVA after filling it here and there with Durabond last autumn. I painted it when it was over 10 degrees. It has not lasted; it's the same on both sides. Do you have any advice on why?

Hobby farmer · 11-04-2025 09:41PM

It needed a watered down mist coat first or a coat of sealer

Hobby farmer · 11-04-2025 09:43PM

Spandex stabiliser would be my recommendation

monseiur · 11-04-2025 10:38PM

Scrape off any loose/flaking paint. Mix paint with polybond/durabond at a rate of 5 to 1 (5 parts paint of course!) If too thick to brush on add some water, apply two coats leave at least 6 hours between coats.

policarp · 12-04-2025 12:14AM

Was it just plastered?

If so it would need time to dry and set.

geographica · 12-04-2025 07:43AM

I’ve used this to good effect in the past

Ceepo · 12-04-2025 08:12AM

https://www.boards.ie/discussion/2058405903/outdoor-wall-pain-pealed-off-in-patches-over-winter

These are outside steps right. Are they built from concrete. If so it looks like water has seeped through the top and is causing excess dampness to the sides, this will inhibit your paint from adherence to the side walls. It is likely to reoccur until you solve the water ingress issue.

To "tidy" up the current issue, as someone pointed out, scrape off an loose paint, use stabilising solution, or peel stop. Then re paint.

10-10-20 · 12-04-2025 09:31AM

It's a combination of all of what was said above and the PVA as it isn't suitable for exterior use as it rehydrates when wet. That is unless it's specifically stated as being waterproof, such as this one:

https://diy.evo-stik.ie/product/waterproof-pva