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What’s the UK’s Best Block Paving Sealer? – 2024 Reviews

The first thing you’ll need to realise when asking what the best block paving sealer in the UK is there are a few different types – some are little more than water and may only stop a weed or two!

Some, however, are the daddies of all sealers, and you can kiss goodbye to anything growing in your block paving for good. A well-sealed surface looks good and withstands all kinds of natural damage.

Our Expertise

We’ve been sealing block-paved driveways for over twenty years, so you can trust what we say!

Here’s what you’ll learn in this article.

  • When You Should Seal Block Paving (It’s not when you think)
  • Which Block Paving Sealers You Should Swerve Completely
  • Which Sealer to Buy (Based on 1000+ Sealer Jobs Completed)
  • How Many Coats You’ll Need & What Coverage Per Litre

The Big Question: Should I Seal Block Paving?

Yes. Block paving permanently loses jointing sand over time so the surface may move or sink.

Even worse, it means you’ll start seeing weeds. A block-paved driveway without paving sealers will also move and deteriorate. Ultimately, if you want to prolong the life of any block paving, you will need to seal it.

At the very least, consider using a sand stabiliser. This joint paving sealer at its base level prevents sands from eroding, sinking, and letting water through.

You can look into additional block paving perks, such as a wet or matt finish. Some paving sealers will also lock in and promote colour enhancement.

Before

After Resiblock Sealer Applied

Reviews & Buyers Guide

#1. Best Wet Look Finish Sealer – Resiblock Superior

You won’t need a heavy-duty membrane to prevent weed growth in your beds. Therefore, this thin, affordable solution will likely be a great pick for many gardeners looking for something simple to keep their blooms weed-free. It’s fantastic for locking in moisture while at the same time blocking direct sunlight.

This highly resistant formula will prevent staining, weed growth, and even ice buildup. In our experience, it’s a fantastic catch-all paving sealer that will wear hard over the years. As with Matt, clean the area with a pressure washer before applying.

Best Wet Look
Resiblock Superior Original Block Paving Sealer

PROS

  • Very easy to apply. No need for fancy kit
  • Proven to stop weeds, weather and even ants from coming back again and again
  • Only needs a couple of coats to get that perfect glossy sheen

CONS

  • Expensive per litre, but worth it


#2. Best Matt Look Block Sealer – Resiblock Matt

Resiblock’s matt formula is our top matt pick among paving sealers on the market. It costs slightly more than the average, but you’ll receive several years of outstanding coverage that other sealers can’t match.

25 litres is a good amount of sealer for a reasonably sized area. Provided you prepare the paving properly and brush away any excess jointing, it’s a 48-hour job at most.

This sealer is easy to use with a roller, making it one of the easiest and most effective long-term formulas on the market.

Best Matt
Resiblock Superior Matt

PROS

  • Will lock in a natural look for years to come, likely in around 24-48 hours
  • Dries within an hour of applying in good weather
  • Enough to cover approx. 50 square metres

CONS

  • Pretty expensive compared to other choices


#3. Best Budget Sealer – Raincheck Water Seal

If money’s tight, this nifty paving sealer is super cheap per litre. That’s easily the best type for this sort of product. It’s a water-based sealing product with a quick-drying formula that is easy to apply.

Generally, a sprayer is probably the best option for this particular paving sealer. Water will bounce off the surface of your blocks with this line of patio sealers, meaning if weather protection is hot on your agenda, providing you coat your patios or paving correctly, you should have a few years of resistance. For best results, pay more elsewhere.

Options one and two are not cheap sealers; they are long-lasting and proven to give excellent results. This sealer is water-based and not resin, so it is much cheaper. It’s a great choice if budgets won’t stretch, but you’d still like protection.

Best Budget
Raincheck Universal Water Seal

PROS

  • Fantastic price per litre, perhaps the best online
  • Very easy to apply with various tools
  • It dries off reasonably quickly, suitable to use within a few hours

CONS

  • You won’t get the best sheen or longest-lasting protection – pay more for better quality </aside>


#4. Best Sand Stabiliser – Smartseal Sealer

SmartSeal’s leading base paving sealer product is an excellent choice if you want to stabilise the joints in your paving. It’s also a good choice for overall sealing if you have a few days to spare.

You’ll only need to coat your paving once or twice with the sealer to let it take effect. Providing you prepare the paving area efficiently, such as cleaning it down with a pressure washer, you will get rock-solid joints for years of use. The price per litre is also reasonable.

Sand Stabiliser
Smartseal Block Paving Sealer - Matt Finish - Easy to Apply, Block Paving Sealant. Durable Sand Hardener & Weed Inhibitor – Best Block Paving Sealer for Driveways, Paths & Patios (5 Litre)

PROS

  • An excellent surface sealer if you are looking to stop weeds coming back again and again
  • Sanding goes extremely thick, reasonably fast – easy to apply with a sprayer or roll on
  • Excellent at enhancing paving colours

CONS

  • Blocks will take a fair amount of prep work to get the best results


#5. Best Water Based Sealer – Thompson’s Ronseal

If you’d prefer to run with a water sealer, that’s fine – this environmentally friendly paving product is an excellent alternative to solvent-based pacing sealant.

This is a good paving sealant choice if you want to prevent moss from breaking through your patio. It’s also pretty good at stopping everyday dirt from ruining the look of your slabs.

This formula offers a nice, attractive sheen, meaning you might be won over if you are not yet converted from solvent to water. Grab it for a reasonable price, and it should make even the most natural surface or paving type shine.

Water Based
Thompson’s Ronseal

PROS

  • A great alternative to using solvent for a stunning shine
  • It can really help to bring out the colours in your paving
  • Very easy to apply in two separate coats with a paving roller

CONS

  • It contains biocide, so not completely eco-friendly


When Should I Seal My Block Paving?

Let’s cut straight to the chase on this.

  • Don’t even consider sealing block paving joints until your paving has been in place for at least eight weeks.
  • This is, firstly, because your patio paving needs time to ‘settle in’. During this time, any problems it’s likely to have over time begin to emerge.
  • These problems might include wobbling, rocking, poor drainage, block cracking, concrete staining, etc.
  • It would help if you also gave efflorescence time to fade. Efflorescence is a temporary, natural, white salt marking resulting from deposits building up. This page covers efflorescence cleaners.
  • If you start applying sealer before you give efflorescence a chance to fade away, you will lock it in.
  • As you can imagine, that will look pretty grim over the long run. Therefore, it is best to give any block paving type the time it needs to settle in.

Here is a comprehensive guide on when to seal paving.

Types Of Block Paving Sealers

Block paving sealer reviews generally break down into three different types. These are:

  • Polyurethane block paving sealer (solvent-based)
  • Acrylic (solvent-based) sealers 
  • Water-based sealers

It can seem odd at first why there are so many different types—surely they all do the same job?

Yes, but they all do the paving sealer job to different standards and have other ideal purposes and uses. Let’s break them down one by one.

Polyurethane Block Paving Sealer (Solvent-Based)

We recommend polyurethane sealants above all due to their long-lasting performance. This is the most rigid resin available for patio and block paving, and solvent-based sealers will further lock in the quality.

Much of this is because they actively glue tiny particles in the joints together, meaning they are never likely to loosen. It is a premium choice but inarguably the longest-lasting.

Polyurethane sealers generally get to work after a single coat, depending on the finish type. You may need two coats for gloss, but you’re guaranteed to lock in the look.

Where are Polyurethane Resins Used?

Polyurethane sealers are particularly useful in intensive applications, such as airports. There are joints in the runways and paving, and as you can imagine, high-powered propellers will blast much of the filling away.

That’s why Resiblock regularly uses polyurethane resins in airport joints worldwide. The fact is, there is no better concrete sealer solution, the science speaks for itself.

Resiblock

We mention Resiblock a lot in our guides for block paving sealers, but that’s because they are at the forefront of the industry. A sealed surface with Resiblock will weather years of use.

They generally advise that their sealers last around five years before reapplication. We agree—at least four years can be expected from a Resiblock application before you need to recoat.

Again, with a gloss look, you may need to coat twice at the start – but application resilience remains the same.

Acrylic Block Paving Sealer (Solvent-Based)

Acrylic solvent-based sealing takes the middle ground. It is widely used for simple concrete jobs and offers a softer resin than polyurethane sealers. The cost savings might appeal to some paving experts. However, an acrylic solvent-based product is going to be hit-and-miss.

The best acrylic sealants are great for pattern-imprinted concrete and general paving slabs. However, they are not always the best for preventing oil spills or getting sand to adhere properly. You may need to reapply after two years, at minimum.

Generally, this is a good damage preventive measure, but shop carefully.

Water Based Block Paving Sealer

Water-based sealant products are likely to appeal to anyone sealing paving with the environment in mind – there’s zero glue involved. Water-based paving sealant is also expected to be very cheap and cheerful, mainly thanks to the cost of the material involved in production.

However, we’d recommend water paving sealant last out of the three main sealant types. That’s because you do not get the same adhesion quality (as it’s not solvent-based). As a temporary measure, water sealant will help fight against sand loss. However, you’ll generally need to reapply sealer every year.

Solvent-based paving sealer is the way forward for the longest-lasting results.

Will I Need One Coat Or Two Coats

Generally, the number of sealer coats you apply and the different types of looks you’ll receive will differ depending on the product.

Resiblock typically recommends a single coat in most cases. That’s largely thanks to the adhesive strength of the product.

However, some manufacturers recommend using two coats for a wet look, while one will retain a matt finish. Be careful with this rule whether you are coating resin or concrete, as it does not always apply. Always read the instructions on your surface sealer before you go ahead and start.

Generally, acrylic sealant will likely need two seal coats re-applied for the best protection.

Will My Sealed Block Paving Be Slippery?

No. Providing you seal your surface correctly, according to the manufacturer, there are zero risks of slipping or skidding after application.

It’s easy to assume sealing any paving will cause slippy surface conditions. However, you must protect your surface with the best sealant for block paving on the market. We can’t speak for inferior paving sealers, but Resiblock advises that skidding is extremely unlikely, provided you coat or protect your surface or blocks adequately.

Can I Seal Over Other Sealers?

Again, this can vary from product to product and surface to surface. Resiblock confirms that you can apply other sealants to their products only if the previous paving seal was not silicone-based.

This is purely Resiblock’s advice for their paving products. Generally, follow what a manufacturer states – though ensure that any previous paving sealant is completely dried. This is because, in rare cases, your new paving sealant might struggle to take effect.

I Only Want To Stop Losing Jointing Sand; What Are My Options?

Brindle Driveline 60

You need to look for a leading joint sand stabiliser if you don’t want to use a full paving sealer product.

Sand stabilisers sweep into paving joints easily and can often be set to work with little water.

Again, we’d recommend Resiblock for this side of protection. Their Commercial Resifix range is easy to use, doesn’t stain, and is excellent for various paving jobs. That covers concrete as well as natural stone surfaces.

If you shop for paving joint stabilisers in high-street shops like Wickes, you’ll likely come across products like No Grow by Dansand or Watco. These are good choices for stabilisation rather than a complete paving sealer job. However, we must recommend total paving sealer products if you want complete long-term protection.

Can These Sealers Be Used With Pattern Imprinted Concrete?

Overall, experts and manufacturers recommend an acrylic paving sealer for pattern-imprinted concrete. As the mix contains colour, a specialist sealer may be needed to protect this surface fully.

SmartSeal offers a complete line of paving sealers designed explicitly for PI concrete. In my professional opinion, you’ll do best with acrylic solvent-based sealers or a line blended for decorative paving.

Above all, don’t proceed with any patio or paving sealers until you read the bottle. All pavers agree on this!

How Many Litres Will I Need?

Calculating how much paving sealer (per litre) you need can be challenging. Even experts like us rely on calculators for more complex jobs – but if you’re working from home or don’t have a head for figures, an excellent online paving sealer calculator will give you the answers you’re looking for.

SmartSeal recommends saturating blocks as much as possible – and that spreading thin is a no-no. They recommend around two square metres of stone per litre for their products. This, of course, may vary with other manufacturers of paving sealant.

Last Word & Our Recommendation

Many pavers will agree that Resiblock is leading the way in all kinds of paving sealant. Their solvent-based polyurethane is the toughest stuff going. It’s good for patios and features on every list of top drive sealers in the UK.

If you have a particular type of hard landscaping (e.g., clay block paving, pattern imprinted concrete), always carefully read the bottle of any solvent-based sealers (and water-based products). Sometimes, it might be worth investing in a specific concrete sealer.

Some pavers may look at PU solvent and assume it’s a lot of money to pay. I genuinely think Resiblock offers great value sealant you can easily lay down with a roller – great value to me and the rest of the team here is paving sealant or patio sealer that will last years and years to come.

Our 1st Choice
Recommended Product

It’s not for us to say whether you should go for the wet or matt look; that’s a personal choice on how you’d like your block paving to look.

The majority of customers we have worked for choose a wet look to enhance the colours already in the pavers.

In our experience Resiblock block paving sealer is the best performing sealer over the long term. We have seen 100’s of blocked surfaces over a decade on still sealed solid and weed free.

North East Paving & Gardens

Modern and experienced landscapers who love to create outstanding area’s using a varitey of landscaping products. We work with both domestic and commercial customers.