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What’s the Best Sand for Block Paving Joints & Jointing Pavers

100,000 bags of sand and it feels more like a million, to be honest. That’s how many bags of sand we’ve probably bought in our lifetime operating a North East paving and landscaping business. We have pallets of the stuff arriving every day. It never ends!

What’s more, jointing sand, or joint sand, is a particular type of mix. You’re going to need this specific mix when you’re dealing with any kind of paving blocks, and as seasoned block pavers, we can safely say getting the wrong sand can be a real nightmare.

In this article, we are going to dive into what is the best sand for a block paved driveway and other narrow joint surfaces like cobbles and sets.

The Best Sand to Use for Block Paving is Kiln Dried Sand

When it comes to the best kind of joint sand for your block paved driveway, kiln-dried sand is easily the best option.

Kiln-dried sand is specifically worth investing in if you really want to get those joints nice and tight. Joints on your driveway or joints on the blocks in your garden are going to need something thick and strong regardless of how the paving is initially laid.

What is Kiln Dried Sand?

Kiln dried sand, as the name suggests, is sand that’s been dried out in a kiln. This means it’s had all its moisture removed, and that it’s now good for applying to your joints.

Essentially, bagged, dried sand is ideal for the joints in your blocks and paving because it flows all the way down to the bottom. There is no side sticking and your joints are filled without any risk of overflow.

Re sanding anything with a kiln-dried mix, you must make sure everything is dry. That means you’re probably going to need to let your paving joints dry as well as the sand itself. Altogether, you’re really not looking at more than a few days to get your joints sealed up and good to go.

Does kiln dried sand go hard?

Kiln-dried sand is only really likely to go hard if you apply any kind of mix to it, or if it gets wet. That’s why you need to absolutely make sure your joint sand is dry, as well as your blocks before any jointing sand goes in.

To allow sand in your joints to solidify, you’ll need to look into sealing (which we generally recommend for your home patio regardless), or to get the gaps washed down to allow the sand to cement in.

Initially, however, you should brush your sand into the joints and gaps so that it falls into and under the blocks, and so that there’s no wiggle room for any bricks before you go ahead and seal.

The method to fill bigger gaps is different, see this guide.

Of course, deeper advice on this will vary from case to case, so definitely make a point to speak to expert services regarding a specific job.

If you’re going to seal your block paving it’s here for the best sealer.

Reviews & Buyers Guide

#1. Best Price Kiln Dried Sand – KILN Dried Brushing in Sand | 25KG | Block Paving Paver Joint Filler

For sheer value alone, this 25KG bag of jointing said is the complete package. It’s silica sand, and all it takes is a quick brush into the joints so it can really do its job.

Best Narrow
Sika Setting Sand | Narrow Joint Filler

You’ll need a fine mix – that’s our advice – and Sika’s setting sand gives you the complete package. Simply brush over the block surface – any kind will do – and it’ll set hard on its own. It’s great in fighting against weeds.


#2. Best Narrow Joint Setting Sand – Sika Setting Sand – Narrow Joint Filler For Paving

Narrow joints can be an absolute nightmare sometimes. Yes – we love a challenge – but when it comes to sanding, there are some joints in-depth and width that just don’t want sanding at all.

Best Price
KILN Dried Brushing in Sand

It’s a medium-grade mix and should add plenty of bonding without the need for extra mix or fancy tools.

#3. Best No Grow Weed Paving Sand – Dansand No Grow Weed Paving Sand For Drives Paths Pavements

Speaking of weeds, as these pose issues for just about everyone with a driveway, Dansand no grow paving sand mix is a great choice.

Best No Grow
Dansand No Grow

This 20KG bag is a good choice if you’re looking to seal up those joints, mainly to stop pesky perennials from getting compacted and making regular appearances.


#4. Best Kiln Dried Sand from Tarmac – Tarmac Kiln Dried Sand

Best Kiln
Tarmac Kiln Dried Sand

As with other bags in this list, just brush and go. What we really like about this sand is that it gets in nice and tight but still allows clear drainage. It’s well priced, too.

There are plenty of paving sand brands that cover all bases. However, this cheap bag for sanding will work specifically well on smaller tarmac projects.


#5. Best Easy Brush Sand – Kiln Dried Paving Sand – Joint Filling Brushing in Sand Natural 22KG 

This non-staining paving sand is just as easy to brush over the surface into your paving joints, sealer applied or otherwise, and is another great mix for ensuring water drains through cleanly.

Best Easy Brush
Kiln Dried Paving Sand

It’s also available at a great price for 22kg and tends to be a good entry-level pickup.


Block paving sand calculator

When it comes to actually working out how much sand you’ll need, you’re going to need to know how big your block paving area actually is before you start. A good rule of thumb is to measure the total area of the paving in question in square metres, as this is the go-to for most sand bag manufacturers.

However, that’s only really a small part of the puzzle re-sanding. You’ll then need to make sure you take a look at a jointing sand calculator – there’s an excellent one you can use online via Paving Expert here.

Where to Buy Jointing Sand

If it’s your first time looking into block paving re-sand of any kind, then you’re going to need to know where to shop for the best mix. As you can see from the above links, Amazon is a really good place to start.

However, there are plenty of warehouse brands that offer a good deal on sandbags in general, with Screwfix and Tool Station being frontrunners.

You should also consider the big DIY giants, too, such as Wickes and B&Q. All of these brands have online stores, meaning if you’re unable to pick up your mix in person or need a helping hand, make sure to add to your online basket and arrange delivery.

What is No Grow Kiln Dried Sand?

No grow kiln dried sand is a long-lasting weed killer. It tends to create brilliant desert-like joints, meaning that even the most annoying perennials are unlikely to push through.

Trust us, we’ve all suffered from weeds in the odd driveway or pathway in the garden. Do yourself a favour and take our advice – get brushing some sand into the depth and save money on expensive chemical killers while you’re at it.

Can you use a sand and cement mix for block paving?

Yes – after all, sand and cement mix, generally, makes concrete!

Mixing sand and cement tends to be a better option than, say, compacting a sub base. However, it’s always worth checking in with paving services to find out more information for your own project.

How to stop sand washing out of block paving?

To stop sand from washing out of your joints, you’re going to need to invest in a block paving sand sealer. As the name suggests, this will help to lock in your sand so it doesn’t budge. Generally, there are two types of sealer:

Wet Look

As you can imagine, this mix creates a glossy surface. Looks good with some driveways, but not the best aesthetic for everyone.

Matt Look

Matt look offers a more solid-looking surface, a drier look. Again, your own tastes may vary, and an expert will give you a valuable opinion.

Last Word

If you’re looking for advice on re-sanding, don’t worry. The experts are on hand to help. Even if you’re unsure of your measurements, don’t be afraid to reach out.