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Everbuild Opti-Mix Super Concentrate Mortar Plasticiser 1L

4.9 (67 reviews)
SKU: 240304163929011 EAN: 5029347609870

Compare 3 prices for Everbuild Opti-Mix Super Concentrate Mortar Plasticiser 1L — from £8.54 to £11.95 across 3 UK sellers including BP Tools UK, Tooled Up, My Tool Shed. Save up to £3.41 (29%).

£8.54 1h ago
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Compare Prices from 3 Sellers

Prices updated 19 Apr 2026
2
Tooled Up
£11.95 +£3.41
1h
3
My Tool Shed
£11.95 +£3.41
1h
#2 Tooled Up
1h ago
£11.95 +£3.41
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#3 My Tool Shed
1h ago
£11.95 +£3.41
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Achieve a more waterproof and workable mortar with this super-concentrated plasticiser from Everbuild. It works by locking out the air during the curing or drying process, delaying the set and thus preventing cracking, crazing and shrinking. Use it when bricklaying, doing blockwork and rendering to make your job easier and reduce the grittiness of your mortar.\nThe liquid is highly concentrated and easy to use thanks to the controlled dosage and gauge on the bottle. You''ll find that 1 L of this product is equivalent to 25 L of a standard mix. You''ll need less water too, as it''s a water-reducing compound. It''s resistant to efflorescence (salt formation) because it replaces lime in the mixture, and it also reduces any damage caused by freezing and thawing action on masonry.\n• Highly concentrated 1:25 plasticiser – 1 L is equivalent to 25 L of standard mix\n• Powerful and fast acting formulation\n• Prevents shrinking and cracking during curing\n• Water-reducing \n• Chloride-free\n• Tested to BSEN934-Part 3\n• Hazard safety codes: R38, R41
Brand Everbuild
MPN OPTIMIX1
No features listed
No items listed

Customer Reviews 67

4.9
67 reviews
5 star
60
4 star
5
3 star
2
2 star
0
1 star
0
Opti-Mix
5.0
January 30, 2026
952604fa-28a2-5ec5-adf1-f1a10d285813 Verified Purchase

Amazing stuff! Recommended above all else by our bricklayer who’s one of the best in the business. It goes really far too.

Opti-mix
5.0
June 13, 2025
d8d4b921-137b-5690-9e55-c58b2fbb2698 Verified Purchase

Great product at good price.Does exactly as should

Handy little bottle
5.0
April 28, 2025
0d147ffc-52a0-5422-b607-c824e5383c2a Verified Purchase

Compact bottle with easy measure contains enough to mix 5m2 or mortar, much easier to transport than the 5l bottle but does the same job. It is also cheaper than 2 of the larger tubs making it an easy decision.

Toolstation
3.0
March 7, 2025
drdaktyl Verified Purchase

Works well, as described, pleasure to shop at Toolstation.

Good product
5.0
January 6, 2025
Tasi Verified Purchase

Did the job. Good price and easily available last minute as we had run out.

Proper Job
5.0
December 7, 2024
Shepps Verified Purchase

Clean tidy and easy to use as no spills. A little goes a long way.

Solid and works
4.0
December 2, 2024
EdHed Verified Purchase

Like the small measure design of bottle. Bottle been chucked about a bit around site and feels solid

Plas
5.0
November 12, 2024
hyo14p43vblu39uwwvok4gq69 Verified Purchase

It’s the best without doubt, all others are pretty useless.

controllable
4.0
November 12, 2024
serial self builder Verified Purchase

huge improvement over a splash in a bucket - much more usable mortar

Optimix Plasticiser
5.0
October 16, 2024
Dan Bell Verified Purchase

Good plasticiser, don’t need a lot at all. Makes the mix nice and workable, don’t forget to reduce the water!

Made mixing & pointing easier than without a plasticiser.
4.0
October 4, 2024
Desbroom H Verified Purchase

Used as an additive to a 3-1 sand & cement mortar mix to repoint paving slabs. The only negative was figuring out the plasticiser to water ratio when mixing small quantities.

best value 'ever'
5.0
September 25, 2024
Daffyd Verified Purchase

Best value the concentrate is perfect for large or small jobs. Cost effective too, when you consider the time saving it gives to placing slabs for shed base.

Accurate and consistent
5.0
September 4, 2024
Seanbont Verified Purchase

easy to use. Doesn't spill, consistent dose and goes a lot further than larger cheaper feb.

Works as expected
4.0
August 12, 2024
MikeAC Verified Purchase

Works as expected, tricky to measure for small mixes.

Plasticiser
5.0
June 29, 2024
KR09 Verified Purchase

Great product and easy to use. Last for long period

Super product
5.0
June 19, 2024
snz4acxzlpqdyuvkwn3kfhyyy Verified Purchase

It's a super product and very good value for money and makes very creamy mortar

Plasticiser
5.0
June 4, 2024
Dave W C Verified Purchase

Great plasticiser used it before and never without it in the van.

It's brilliant stuff highly recommended..
5.0
May 31, 2024
Mahrouf Verified Purchase

It's brilliant stuff highly recommended, i used it in about 10 mixes it helps cement not to dry quickly.
My mixture was 1 bag of cement to 16 shovels of sand ( times 10 load of wheel borrow...

Excellent value for money
5.0
May 20, 2024
Robin Saul Verified Purchase

Excellent value on price and in stock witch is always a bonus

Great product
5.0
October 29, 2023
Plasterer Pete Verified Purchase

Perfect mixes every time.and very handy to keep in the van .

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