Free Delivery

BLOCK PAVING - Polyurethane Ultra DURABLE Sealer - Oil, Fuel and Stain Resistant - Solidifies Jointing Sand (sample 5 & 23L)

inc VAT
Please select a size
In Stock In Stock

Customer Reviews

The polyurethane durable sealant went on easily (I followed the guidance on the helpful SmartSeal video). My only issue is that, contrary to the product description stating that the finish is matt, the appearance of my driveway after both first and second coats is that of a high high sheen/wet-look. I'm advised that the degree of sheen will lessen over time, but I remain sceptical. I note reference to "wet look" in at least one other review and therefore I do question the product description as, based on my driveway, it can be called anything but matt.

By Robert Lipscomb MBE From Crawley, West Sussex

The service I receive from smartseal is second to none the products are amazing and my customers love the results here are a few pics from a recent job I just love the beading effect and so does my customer thank you smartseal.

By Adam - From West Yorkshire

I cannot stress how eternally grateful we are to SmartSeal for helping us during a crisis. We chose a contractor to pressure wash, sand and seal our extra-large driveway but it was a nightmare from start to finish. We were never sure when he was going to turn up, and when he did it was clear he had no idea what he was doing. Halfway through the job he admitted he had pocketed the large deposit we paid him to purchase the sealant and claimed he was going out of business so we had to buy the product ourselves if he was going to finish the job. SmartSeal were fantastic. Not only did they patiently listen to our predicament on the phone, they also took the time to explain how we should proceed. Then they arranged an emergency delivery of the product within 48 hours. Unfortunately, the contractor did a really bad job sanding and sealing. No other contractor was interested in talking to us and we felt we had no-one to turn to. But we called SmartSeal who again listened patiently and arranged a telephone call with the company director, Nigel. Youd think the director would have enough problems to deal with, but he spent a long time with us on the phone, looking at our photographs one by one, giving us advice, helping us understand what might have gone wrong, tirelessly explaining how the product works and taking us through possible solutions, step by step. From the start, SmartSeals customer service, from the lady we spoke to on the phone, to the person in their technical department who took time to email us advice, to the director Nigel, was completely flawless. If youre every thinking of pressure cleaning and sealing, please, please make sure you use SmartSeal and ideally a contractor they can recommend in your area.

By anon anon From Kent

Applied this sealer to my patio and what a fantastic result,it gives a revived wet look to the slabs ,Im well pleased,first class company with first class products.

By Andrew Hall

Best block paving sealer on the market.says needs 2 coats but I got good results with 1 coat only.turns pavers slightly darker.

By Anupam Sinha

Excellent product,noticeably better than other,cheaper,sealants. Would definitely recommend my customers pay the extra to have this on their block paving

By Martin Takacs From Kent

have not used the block paving sealer yet(weather)but was very impressed with the ordering very straight forward nothing complicating,as with delivery in this climate very impressive, will use this company again.

By Ian Webster

Really good product.Easy to apply the sealer with a roller. Applied to a brand new block paved driveway, Brought the colours out.

By Chris Murray

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

The order arrived within the specified delivery dates. Having watched the online video by Smart Seal first applying the sealer was not a problem. However the most critical aspect of achieving a good finish is in the preparations before you start applying the sealer, make sure that all the joint sand is cleaned from the paver top surface. The 23 litres of sealer was sufficient to apply two coats on 46 sq. metres, with less than 1lt. left over. I'm very pleased with the standard of finish and it looks great,

By Ron Braid From North Waes

Very Good sealer, do not op for a cheaper alternative.

By DAVID GARSIDE From Uckfield

Used this sealer a few times. Does enhance the block paving and is easy to use.

By J Pearson

We are very pleased with the results of the sealer and would buy again

By Joanne Hartman From Clacton On Sea

Results look good. I would recommend to use more sealer than indicated, possibly 25-50% more than suggested, in the instructions, although this may depend on the state of the block pavings in the first place and the width of the brick separation.

By Mike Cutter

Block Paving Sealer does exactly what it says on the tin. Very happy, great product

By Chet Willcock

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

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
Read more reviews

Leave A Review

Product Rating  *  *  *  *  *

*All submissions will be checked by our administration team before appearing on the site. Please be patient as we will try and approve your comments as quickly as possible.




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. 



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

  • Manufactured to BS5750 standards in the UK
  • Colour Enhanced, Matt Finish
  • Highly Stain Resistant; Chemical and Oil Resistant
  • Average Coverage Ratios: 2 m/litre first coat and 3.5 m/litre second coat
  • Apply second coat within four hours to ensure sealer 'keys' together correctly.
  • Solidifies Jointing Sand
  • UV Resistant:-Protects Blocks against Colour loss, but cannot be used in conjunction with Block Magic
  • 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 coats of sealer - apply the second coat within four hours of the first to ensure sealer coats 'key' 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