Did the magnetism work? How many coats did you need?

It does work but is very weak even after 3 coasts with Neodymium magnets

How long does it take to cure...and so how long do I have to wait before writing on it with chalk

Hi Most paint coatings have a curing time of 7-10 days, this product is no different. Please allow 7 days for dry paint film to achieve its full cure time before using chalk on the finish. CT Paints

Would this paint work on matt melamine? or would i need to use primer in the first instance?

Hiya, I have used it on plastic soffit board, I did use a magnetic primer first as l understood it would work, with ordinary blackboard paint but it didn’t work, so then l bought this and used 2-3 coats on top of the magnetic primer and got good results. This is not supposed to be necessary but it’s more belt and braces! Prob 3-4 coats of this would do just as well,, but can’t guarantee, hope this helps! L

can this be used on bare plaster?

For any bare plaster you want to mix some emulsion paint with water 50/50 and give it two layers of watery paint before you paint this.

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Johnstone's - Magnetic Blackboard Paint - Black - 750ml

Product ID: 48655014

Details

Brand
Johnstone's
Colour
Black
Finish type
Matte
Item volume
750
Paint type
Acrylic
Size
750 ml

🕑Fast 2-hour dry & cure time

🖤Matte black finish

🧲Magnetic surface activation

S$58

Duties & taxes included

In stock

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Description

🖤 Elevate your space with magnetic matte magic!

QUICK DRY EFFICIENCY - Ready to use in just 2 hours—no downtime, just instant inspiration.
SPACE SAVING INNOVATION - Combine writing and magnetic display in one stylish, space-smart solution.
MAGNETIZE YOUR CREATIVITY - Turn any interior surface into a sleek, functional blackboard with magnetic power.
SLEEK MATTE BLACK ELEGANCE - Achieve a professional, glare-free finish perfect for modern workspaces and home offices.
VERSATILE SURFACE COMPATIBILITY - Ideal for wood, plaster, and metal—transform walls, doors, or furniture effortlessly.

Johnstone's Magnetic Blackboard Paint (750ml) delivers a durable, matte black finish that transforms interior wood, plaster, or metal surfaces into magnetic chalkboards. With a fast 2-hour dry and cure time, it covers up to 9m² per tin, combining style and functionality for creative professionals seeking versatile, space-saving solutions.

Specifications

ASIN	B00OTP5KYS
Best Sellers Rank	38,641 in DIY & Tools ( See Top 100 in DIY & Tools ) 369 in House Paint
Brand Name	Johnstone's
Colour	Black
Colour Code	#000000
Container Type	Bottle
Coverage	9 metres squared per tin
Customer Reviews	4.2 4.2 out of 5 stars (124)
Dry Time In Hours	2
Finish Type	Matte
Full Cure Time	2 Hours
Global Trade Identification Number	05010426786520
Included Components	paint
Indoor Outdoor Usage	Indoor
Is Waterproof	False
Item Form	Liquid
Item Type Name	Magnetic Blackboard Paint Black
Item Volume	750 Millilitres
Item Weight	1.81 Kilograms
Manufacturer	PPG Architectural Coatings UK & Ireland
Model Number	309268
Paint Type	Acrylic
Part Number	309268
Size	750 ml
Special Features	Magnetic
Specific Uses For Product	Interior
Surface Recommendation	Chalk, Metal, Wood
Unit Count	750.0 millilitre
Water Resistance Level	Water Resistant

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