THIS HIGH-QUALITY, LOW-VOC EMULSION IS SUITABLE FOR BOTH INTERIOR AND EXTERIOR USE. FOR DRAMATIC COLOUR CHANGES OF FOR USE UNDER VIVID COLOUR TOP COATS, VALSPAR PRIMER & UNDERCOAT CAN BE TINTED TO AID WITH HIDING AND OPTIAL COLOUR APPEARANCE. 

Available in 1l & 2.5L White & tintable to 4 shades of grey

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Use quality paint on the primer for a flawless finish.

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Calculate how much primer you need using our coverage calculator.

PRIMER & UNDERCOAT

Primer & Undercoat is rated 1.1 out of 5 by 7.
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Rated 1 out of 5 by from Too Little pigment I've used many brands of primer undercoat over the years, both here in the UK and New Zealand, but never one as bad as the Valspar primer undercoat I bought from B & Q last month. Even after very thorough mixing, it didn't cover any of surface I was painting. The photo is after 3 coats of the primer/undercoat, and virtually everything is showing through. Very disappointed, especially as the specifications on the tin mention "high level of opacity" It doesn't.
Date published: 2019-11-07
Rated 1 out of 5 by from Undercoat primer tinted Bought few days ago to complete a house decoration along with v700 wall emulsions and topcoats for woodwork , the undercoat primer does not do what's stated on the can it cannot hide colour strong changes its thin and see through even after 3rd coat , do not buy this product it will cost you time and money
Date published: 2019-10-08
Rated 2 out of 5 by from Quite thin I bought this product for the first time the other day and I used it yesterday. I have been painting for 40+ years and I haven't used a primer undercoat as thin and watery as this before. I stirred it over and over and whilst I was painting but it didn't thicken up. I am now going back outside to apply a second coat. Disappointing - it's set me back a day and has caused me more work.
Date published: 2019-09-19
Rated 1 out of 5 by from Waste of time and money. Worse than poor. We have four doors to repaint. Used the Valspar undercoat primer and it's turned into an awful watery mess. What do you you do when this happens? We've been DIYing for many years but not seen anything like this. B&Q, shame on you for selling this stuff.
Date published: 2020-02-16
Rated 1 out of 5 by from no good Might be alright as a primer but its like water. Has someone made a big mistake in the formulation? Perhaps got the decimal point in the wrong place?
Date published: 2020-03-26
Rated 1 out of 5 by from Worst under coat ever Bought from B&Q as I have used Valspar paint before this under coat is so watery that you need three coats and it's still not as good as others I have used
Date published: 2020-02-22
Rated 1 out of 5 by from Terrible Undercoat - Don't waste your money Bought from B & Q and stirred well, this was a total disaster - watery slow drying and little pigment made it a complete waste of time. I'm annoyed after telling Customer Service who took over a month to respond. Disgraceful.
Date published: 2020-12-16
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Bathroom Paint

How much do I need?

Paint Coverage Calculator

Simply enter the size of the area you'll be painting and our calculator will tell you how much product you need. 

Calculations are based on one coat of paint.

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m

You will need 30L to cover this area