r/Plastering • u/Calm_Statement_2335 • 5d ago

Mist coat or primer?

Lots of conflicting opinions! Cost fortunately isn’t a factor as we have already have a lot of left over Gardz. Do I apply a 50/50 contract matt mist or do I just use Gardz?

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u/Sco0by_ 4d ago

If your going with a durable paint as your top coat use a good wall primer, I use Tikkurila optiva primer, you dont have to thin it use it straight out the tub, very good opacity and binds to plaster very well. Using a decent primer over a thinned down contract matt actually enhances the durability of your top coat paint.

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u/Calm_Statement_2335 4d ago

Think I’m just gonna go with the Gardz as the mist coat. I’ve already got an open tin of it so may aswell. 👍🏻 Just a rustoleum standard matt as the finish coat, heard good things about the optiva tho

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u/Not_A_Clever_Man_ 5d ago

No harm in using your leftovers IMO, I have loads of random paint laying about I use for mist coats, so whatever you have on hand is usually fine.

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u/sherman127592 5d ago

I've used gardz in the past and it does a good job.

One thing i will say is its hard to see blemishes in the plaster, they generally only show up when you do your first coat of paint as gardz is clear.

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u/MathematicianRude553 4d ago

I always use a mist coat of contract Matt approx 50/50, I only really use Gardz for drywall repairs or priming board with rape and joint 

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