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Block Paving Sealer - Polyurethane (Ultra Durable) - Sample, 5 & 23 litres - Solidifies Jointing Sand - Stain Resistant

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Customer Reviews

Really good product, there is cheaper sealer out there, but I would definitely use this product again and recommend to others.. Its brought my block paving up great and my neighbours are all saying how good it looks. Just follow the directions on the can/video you cannot go wrong. Excellent product.

By Darren Ford

I have just applied a coat of sealer. It has really brought out the colour of the block paving and looks great. It has already started to bind and harden the sand. It is very smelly but is easy apply with a roller. Time will tell about the long term durability but I’m very happy with the product so far.

By Terry Coode

Does what it says on the tin

By Tyrone Oconnell

Had sample of this to compare to the matt finish. I chose the matt finish as i wanted the tone of the monoblock to stay as near to its original shade as possible and this makes them slightly darker than the matt.

By Angela Montgomerie

Great service and very happy with the product, really enhanced the colour of the block paving

By Keith Fairclough

Very easy to apply and the result looks superb. Time alone will tell how the sealer wears. Good so far.

By Peter Taylor

Found sealer easy to use with covering properties as per spec. Quick drying and a nice semi sheen finish

By John Thomas

I used this on my drive 3 or 4 years ago and weeds have only just started to appear again. Makes the drive look like new again. Only slight criticism is that it is only available in 5lt or 23 lt. Last time I need one of each to cover the area and had half of the 5lt can left. This time I used about three quarters of the 23lt, presumably because I'd used it before it didn't need as much, so it would be useful if a 10lt size was also available.

By John Lister

Block paving sealer with polyurethane.Resanded drive with kiln / weed inhibitor from Wicks. Found that you had to spray sealer on drive so not to distribute sand in joints. Sand soaks up sealer and on second coat you can rolled on or brushed on. Repels the water very good product. Highly recommended

By Ralph Whitehouse

I give this product a rating of 5 but the container was damaged when it arrived

By Martyn Bryce

An excellent product that is easy to apply and seems to be working very well.

By Paul Allen

excellent product, does give a great shine. brilliant, wiil buy again

By Gerardus Geensen From preston

A great product. Added a small amount of paving seal to paint & applied to my patio worked brilliantly thanks

By Dion Smith

Very pleased with the result Have recommended it to a number of friends.

By Paul Simeone

Delivered on day specified Easy to apply coverage is good Dries quickly Finished job is great Im really happy with the result Ive tried other sealing products with varied results Smartseal is the best I used on new block paving of about 120sq metres so Im hoping it does as it says on the tin

By Tom Handy

Have tried branded well known makes smart seal ultra beats the others hands down have used it last three years no problem.

By David Billingsley

Excellent buy everyone has complimented on the result. Would highly recommend. Will buy again when required.

By Olive McWilliams From Gateshead

Great friendly service. Products work excellently and very easy to apply.

By ANDREW K From Chester

I seal our drive every year the last few years I have used smart seal this year I tried smart seal ultra it's the best seal I've ever used six months on my still has a shine on it I shall be using this next year.regards

By David Billingsley From Tamworth staffs

Great service, product works well thanks.

By Mike Michael

Great product. Will be back for more next year.Excellent delivery, came the day after ordering. Many thanks.

By John Callaghan

Does what it says on the can, easy to apply and leaves a great finish, would certainly use it again especially as it is a really competitive price against similar polyurethane sealers from other suppliers. I was also impressed by the help and support provided by Nick who was really helpful.

By Michael Griffin

DIY'er - followed the advise in the videos and it provides a great finish - ensure you apply enough to set the sand between the blocks.

By D Leather From Essex

Doing this ourselves for the first time, I was a bit wary of spending what amounted to a small fortune to cover a very tired-looking 90 square metre block-paved driveway. Have to say though that the end result is fantastic and completely worth it. (Although a lot of time and effort went in to weeding, cleaning, (Extreme 60), jet washing and sanding and I'm sure that paid dividends) Ease of application was brilliant using various rollers and the recommended coverage for the first and second coats was absolutely spot on, (don't scrimp on that first coat), with the block colour restored nicely beyond expectations and the sand in the joints set hard. Drive looks like new, has a lovely sheen to it and both neighbours and passers-by have stopped to congratulate us on a job well done and to ask what products we used. (Think my lad might have some work for the Summer) Interested now to see how long the seal and finish lasts albeit I'll be carrying out preventative maintenance fairly regularly to hopefully maintain it for as long as possible. In summary a great product and a great company to deal with)

By Steve Davenport

Wonderful product does what it says on the tin, will definitely be using it again

By ROCANE Clarke

Looked on line to buy some block paving sealer, couldnt have picked a better sealer. one word excellent we are very happy would deffinately recommend. Certainley has the wow factor. A neighbour wanted to know where we bought it he wants to do the same. Will be back for more next year

By Mary Olive Mcwilliams

I was advised by an experienced block paver who lays commercial block for shopping areas to seal my blocks with poly urethane based sealer. After researching the net I decided to purchase from smart seal as the price was reasonable compared to companies out there like resibloc. My block tumblers have been down now for over a year and showing signs of moss between the joints. After spending a weekend jet washing the joints out and brushing fresh sand in I then spent a dry day sealing it with smart seal. Using a small mini roller for my edging stones and a 12" roller on the blocks I applied the smart seal and was impressed with its ease to apply. Although 2 coats is recommended I only applied one as I ensured the coat was ample and the glaze was my desire. Anyway it was a fantastic finish, exactly as expected it also enriches the colour of the blocks and looks strong enough to last. The sand joints are tough which should stop moss and weeds. I will be buying again and highly recommend it. I've already had passing strangers stopping asking what it is because they liked the finish too.

By Darren Dunn

wonder full product will be buying more in two yrs time

By james ward From callington cornwall
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Step-by-Step Video Guide

Polyurethane Block Paving Sealer for Residential and Commercial applications

A very durable oil resistant block paving sealer for heavily trafficked areas

Smartseal Polyurethane based block paving sealer is a low viscosity prepolymer solvent based sealer primarily designed for commercial sealing of block paving. Application will solidify the jointing sand and create a long lasting, effective seal on the surface of concrete block paving. ***NOT TO BE USED ON CLAY PAVERS

See Commercial Case Studies of where our formulation of polyurethane sealer has been used.

  • Manufactured to BS5750 standards in the UK
  • Colour Enhanced Finish
  • Highly Stain Resistant
  • Chemical and Oil Resistant
  • Solidifies Jointing Sand
  • UV Resistant:-Protects Blocks against Colour loss
  • Will not peel off
  • Not damaged by pressure washing
  • Resistant to tyre marking
  • Greatly reduces weed, moss and algae growth
  • Reduces ant infestations
  • Easy application

Apply two coat of sealer - For optimum results apply the Polyurethane block paving sealer at a ratio of approx 2sq metres per litre 1st coat and 3.5sq metres per litre 2nd coat. Apply second coat within four hours to ensure sealer 'keys' together correctly.


Urethane based block paving sealer is only to  be used on precast concrete block pavers (traditional "block paving") and cannot be used on any other form of paver, brick, patio slab, natural stone or block pavers if they are finished with a top course of natural aggregate.        


*** If your Block Paving has been previously sealed - to ensure compatibility, please contact us here before ordering: https://www.smartseal.co.uk/help-advice/contact-us.htm

  • Only apply sealer when the block paving is clean with jointing sand and paver totally dry with no rain forecast for at least 8 hours.
  • Temperatures need to be above 10 degrees centigrade and below 25 degrees.
  • Only apply if no efflorescence (surface salts) is visible
  • Make sure pavers are thoroughly swept and that no jointing sand remains on the surface or high in the chamfers of the blocks. This could lead to unsightly sand becoming sealed onto the surface of the blocks
  • Apply to borders with a paint brush or small roller.
  • Application to main areas by roller or squeegee at ratios of 2sq metres per litre 1st coat and 3.5 sq metres per litre 2nd coat
    Leave between 2-3 hours and no more than 4 hours between coats
  • Avoid vehicular traffic for 24 hours and try to avoid walking on for around 3 hours after second coat
  • Always wear a protective mask, goggles and gloves all all times

For further technical or application information please call Smartseal on 01268 722500