You don't need a sealer or primer with any exterior emulsion, (not especially because it is Dulux Weathershield). You only need a stabilising solution if the surface is friable (powdery) and then you would need it regardless of which paint you use, including Weathershield.
Wipe your hand over the existing paint surface. If you are leaft with any powdery residue on your hand it needs stabilising - otherwise it doesn't.I'm painting the outside of my house and I've been told that Dulux Weathershiled doesn't need masonry sealer ?
He's kind of right, the first coat of Weathershield is diluted down and this acts as the primer. I used this on brand new rendering and it did need both the diluted coat and the undiluted top coat as well. Where I was lazy and didn't do two coats, just the second undiluted one, I can see through the paint.
BTW most DIY stores have sales on at the moment, check out the paint offers before you let your decorator charge you full price + supply fee!
Weathershield does not require a base primer or sealer as long as the stone work or surfaces is sound clean and dry (new surfaces particularly must be fully dry)
However, if the masonry is powdery or flaky or has old flaky paint best get some ';polycell polyfilla'; (exterior) to fix defects if its powdery then yes use ';Weatershield Stabilising Primer'; but Don't prime or seal new or bare surfaces.
Its a good idea thin the first coat to act as a primer. Thinning helps it soak into the surface and not just sit on it.
Yeah it true plus its really thick paint and dries quickly but it is 拢22.99 a tin!!!
he`s right ...i use dulux weathersheid both here and in south of france ..where it gets really hot ...never had a problem yet ..have been using it for 40 years
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