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Johnstone's Exterior Undercoat Dark Grey 750ml

Johnstone's Paint

Johnstone's Exterior Undercoat Dark Grey 750ml

NOW £5.00
WAS £7.00

Product code: 237259 Subject to availability - visit your nearest store

Johnstone's Exterior Undercoat.

Johnstone's Exterior Undercoat has been specially developed to be used in conjunction with Johnstone's Exterior Gloss to provide an exceptionally durable and long lasting high gloss finish for exterior wood and metal.

The special formula retains flexibility for longer than traditional undercoats and is resistant to blistering, cracking and peeling.


  • For wood and metal
  • 6 year life
  • Weather protection
  • Crack & peel resistant

Colour: Dark Grey

Size: 750ml (Approx.)

See Specification tab for more information.

Browse more Johnstone's Paint online, and buy in-store at B&M.

For over-bare wood and metal apply one coat of Johnstone’s Exterior Undercoat followed by two coats of Johnstone’s Exterior Gloss.

Plastic rainwater products should be cleaned thoroughly and given two coats of Johnstone’s Exterior Gloss. Under normal conditions allow 16-24 hours before applying a second coat if required.

For maximum performance Johnstone’s Exterior Undercoat and Gloss should be applied as a system to pre-treated bare surfaces.

Coverage: 750ml of Johnstone’s Exterior Gloss will cover 11m² (approx) depending on the nature and porosity of the surface (this product is UndercoatNOT Gloss. Gloss sold seperately).


If you are not happy with a purchase you make at our stores, simply return it in its original condition, with proof of purchase, within 30 days and we’ll give you a full refund or replacement.*

Customers are advised that refunds and credit notes will only be given where proof of purchase (receipt, credit card statement, etc) is provided. To qualify for a refund or replacement, products need to be complete with all components and original packaging.

Conditions apply to some products:

Refunds and exchanges cannot be given against Audio/DVD and Computer Games. Should one of these products prove to be faulty it can be returned with your receipt within 30 days and we will exchange it for one of the same title.

Unwanted Food or Drink Products - Once supply conditions are broken, there are a number of factors outside of our control that can affect the quality of a product. Therefore perishable goods such as food and drink cannot be returned.

For reasons of hygiene and safety, personal grooming products, cosmetics or items of intimate clothing cannot be returned.

Mattresses, mattress toppers, duvets and pillows can only be returned if they are unused, in the original packaging and in a resaleable condition.

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