10 Best Patio Slab Joint Filler in The UK

Last updated on 21/08/2025

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EASYJoint - Pro Jointing Compound for Patio, Pathing, Pavements & Driveways (Basalt/Anthracite). 17kg Strong & Durable Water-Activated Joint Filler Compound for Garden Slabs & Paving.

Why We Love It

Extra strong and durable formula.
Resistant to frost and ice.
Easy to use and apply.

Main Highlights

PATIO JOINTING: The EASYJoint Pro patio joint filler compound is the perfect option for driveways and areas where water tolerance is required. Suitable for light commercial and domestic paved areas, our jointing compound offers resistance against frost and ice.
STRONG: Our patio mortar compound is extra strong and durable with a smooth finish thanks to its tough two-part epoxy compound formula. Available in three different finishes, choose the patio gap filler that suits your needs.
HOW TO USE: Our joint compound for paving slabs is easy to use. Firstly, soak the paving and keep the surface damp throughout the installation process. Remove the activator bottle from the bucket, replace the lid securely and turn the bucket upside down. Remove the lid again and mix thoroughly. Empty the contents of the bottle into the sand, mix again and pour onto the paving. Use a soft broom to remove excess compound.
LARGE TUB: Each tub contains a generous 17kg of patio filler, ideal for covering large surface areas of paving, patio or driveways. (Note: our patio grouting compound is not suitable for standard block paving laid unbound with < 5mm joints).
ABOUT US: At Azpects Ltd, we specialise in developing and manufacturing products to create and maintain outdoor hard-landscaping. Our mission is to deliver products that make typical construction and care challenges EASY and less frequent.

Joint-Tec 15kg - 20m² Coverage | Jointing Compound | Brush In Patio Grout For Patios & Block Paving | Self Setting All Weather Application | Brush In Grout (Granite Grey, 15kg)

Why We Love It

Works in all weather conditions.
Ideal for varied surfaces.
Durable and water permeable.

Main Highlights

Apply in all weather conditions, even in the rain!
Best for joints with a minimum depth of 20mm and 5mm wide
Suitable for pavement slabs, flags, natural stone, cobbles, and setts.
The brush-in paving compound is water permeable, sets hard, and doesn't wash out!

Bostik All Weather Jointing Compound - Grey - Ready to use - For Paths and Patio Joints - Sets Hard and Resists Weed Growth - 15kg

28% OffFree Shipping

Why We Love It

Strong joints for lasting durability.
Compatible with various surfaces.
Prevents weeds and erosion effectively.

Main Highlights

Strong & Long-Lasting Joints – Perfect for paving, patios, and driveways, ensuring durable, permeable joints of 5mm to 30mm that withstand wear and tear.
Versatile Compatibility – It is suitable for most types of domestic paving and can be used on paths and patios of natural stone, concrete, slate, clay, terracotta, granite slabs and ceramic tiles.
Resistant to Weeds & Erosion – Forms a firm yet flexible bond that helps prevent weed growth and joint washout.
Easy to Use – No Mixing Required – Ready-to-use straight from the tub, allowing for quick and effortless application.
1 X Bostik All Weather Jointing Compound - Colour Grey - 15KG

Bond It 15kg Wide Gap Joint Filler Paving Pointing Compound Mortar Jointing Buff

Why We Love It

Perfect for 5mm+ paving joints.
Makes paving compound application easy.
Promotes uniform joint filling.

Main Highlights

For pointing paving joints 5mm+
Joint-Fill Paving Compound

Bond It 12kg Wide Gap Joint Filler Paving Pointing Compound Mortar Jointing Grey

Why We Love It

Simple brush application.
Stable and weather-resistant.
Cost-effective and eco-friendly.

Main Highlights

A single component joint filling system for the simple and rapid pointing of paved areas with joints over 5mm. Ready-to-use, simple brush application. A unique blend of polymers and aggregates that bind together chemically.
On exposure to the atmosphere Joint-Fill forms a stable, solid, mass that is unaffected by the weather once cured. Remains permeable and allows rain water to pass into water course reducing puddling.
For pointing paving joints 5mm+. Suitable for domestic and commercial installations. Also compatible with most types of paving including natural stone, terracotta, clay, concrete and cobble stones.
It is cost-effective, eco-friendly and safe to use. Ideal for patios, pathways and any paved areas and is suitable for open porch ways covered areas.
All joints to be pointed should be dry, free from weeds, dirt or debris. Joints to be pointed must have a MINIMUM width of 5mm and a minimum depth of 25mm. Do not use at temperatures below +10oC.

GRAVELHOLD Pour On ECO Resin™ Glue | 5 litres | Waterbased Binder for Gravel Stones and Mulch on Borders, Patios & Garden Paths. Non Toxic & Pet Friendly

18% Off

Why We Love It

Ready to use immediately.
Eco-friendly and non-toxic.
Fast-drying for efficient use.

Main Highlights

✅ Ready to Use Pouring Viscosity 100 cSt
✅ Eco-Friendly Non-Toxic
✅ Fast-Drying Clear Finish
✅ Permeable Weather-Resistant
✅ Made in Britain

Bond It Wide Gap Paving Pointing Joint Filler Filling Compound Stones Buff All Weather Brush-In Flags Stones Slabs 15kg

Why We Love It

Enhanced drainage for patios.
Easy hand-breakable lumps.
Ideal for UK weather.

Main Highlights

SUITABLE APPLICATION: A minimum parallel joint width of 5mm is required with a minimum depth of 25mm. If the joint is less than 5mm wide, cracking may occur. Not suitable for V shaped/ tapered joints.
PHYSICAL APPEARANCE: There may be occasional small lumps within the bag due to compression. Provided these can be easily broken-up by hand, it is suitable for use. If there are hard lumps, greater than 50mm diameter.
APPLICATION IN THE WET: Joint-Fill cures by exposure to oxygen. If applied to solid bed applications, the joint must be kept dry until fully cured. If water is retained in the joint for long periods, rather than being allowed to pass through a permeable base, the joint may fail.
PERMEABILITY: Joint-Fill is designed to be used as part of a permeable paving system, allowing water to drain from the paving surface. In certain circumstances, natural impurities from rainwater may be deposited on the surface of the cured joints.
PERMANENT IMMERSION: Joint-Fill is not suitable for applications involving permanent immersion but it will withstand the typical UK wetdry weather cycles. To avoid standing water in joints for long periods, paved areas, beds and joints must be well drained.

Bond It Wide Gap Paving Pointing Joint Filler Filling Compound Stones Grey All Weather Brush-In Flags Stones Slabs 12kg

Why We Love It

Ensures proper water drainage.
Withstands typical wet-dry cycles.
Designed for permeable paving.

Main Highlights

SUITABLE APPLICATION: A minimum parallel joint width of 5mm is required with a minimum depth of 25mm. If the joint is less than 5mm wide, cracking may occur. Not suitable for V shaped/ tapered joints.
PHYSICAL APPEARANCE: There may be occasional small lumps within the bag due to compression. Provided these can be easily broken-up by hand, it is suitable for use. If there are hard lumps, greater than 50mm diameter.
APPLICATION IN THE WET: Joint-Fill cures by exposure to oxygen. If applied to solid bed applications, the joint must be kept dry until fully cured. If water is retained in the joint for long periods, rather than being allowed to pass through a permeable base, the joint may fail.
PERMEABILITY: Joint-Fill is designed to be used as part of a permeable paving system, allowing water to drain from the paving surface. In certain circumstances, natural impurities from rainwater may be deposited on the surface of the cured joints.
PERMANENT IMMERSION: Joint-Fill is not suitable for applications involving permanent immersion but it will withstand the typical UK wetdry weather cycles. To avoid standing water in joints for long periods, paved areas, beds and joints must be well drained.

Heavy-Duty Concrete Crack Repair Adhesive, 2-in-1 Concretecrack Filler, Magic Crack Filler for Concrete, for Driveway, Walkway, Patio,Waterproof Caulking Glue for Joint(500g) (Gray, 3Pcs)

Why We Love It

Weatherproof for all conditions.
Heavy-duty bonding guarantees durability.
Precision application minimizes mess.

Main Highlights

Weatherproof & Water-Resistant: Formulated to withstand extreme weather conditions and create a durable waterproof barrier against rain and moisture Ideal for outdoor concrete sealer applications and indoor use with temperature-resistant adhesion
Heavy-Duty Reinforcement: High-strength bonding to concrete surface, will not shrink or crack. Adopts high elastic cement crack filling technology to stabilize weak slabs and extend the service life of floors/walls
Precision Application: Squeeze tube with targeted nozzle allows controlled flow for filling narrow cracks or self-leveling concrete slab repair sealant needs No-mess solution for DIY projects
Rapid Curing Formula: Fast-setting concrete crack repair adhesive begins hardening within minutes Saves time on urgent repairs and construction projects
Multi-Surface Versatility: Professional-grade caulking glue works on concrete, masonry, brick, and rigid surfaces Perfect for foundation repairs, driveway maintenance, and waterproofing renovation projects

The Glowhouse Kiln Dried Sand Brushing in Joint Gap Filling Paving Block Slabs Patio and Drives Fine Dry Aggregate Silica Sand Bag 20kg - Made in the UK

6% Off

Why We Love It

Easy spreading for enhanced beauty.
Prevents slabs from moving.
Improves water drainage efficiently.

Main Highlights

Easy-to-Spread Kiln Dried Sand: Enhance the beauty of your garden with our lawn sand that's easy to spread. Ideal for paving slabs, our sharp sand gives a smoother finish, ensuring that your paving remains intact and beautiful.
Prevents Slabs Moving: Our kiln dried sand is the perfect solution for your paving grout needs. It's designed to prevent paving slabs from moving, offering a durable and stable foundation for your garden paths and drives.
Improves Water Drainage: Use this easy joint paving grout to improve water drainage. Each of our sand bags is filled with fine sand, perfect for filling in gaps between slabs. Just brush in patio grout for immediate results.
Suitability for All Paving: Whether you're working with paving slabs cheap for garden or premium patio slabs, our patio jointing compound works wonders. Our patio grouting brushing in sand is perfect for any paving job.
High-Quality Jointing Sand: Our polymeric sand is a must-have for any DIY enthusiast. The lawn sand 20kg bag is a perfect choice for jointing compound tasks, and the sand bags with sand are waterproof, ensuring the product's longevity. Made in the UK

8.7

Excellent

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We scanned 594 products

We reviewed these offers relevant to the Patio Slab Joint Filler within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Azpects, Garden Store Direct, Bostik, Unknown, Bond It, SIRAMICO COATINGS, ARA CHOICE, Generic, The Glowhouse, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Patio Slab Joint Filler in the market, we considered we took a deep dive into 2971 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is EASYJoint - Pro Jointing Compound for Patio, Pathing, Pavements & Driveways (Basalt/Anthracite). 17kg Strong & Durable Water-Activated Joint Filler Compound for Garden Slabs & Paving.. We love many things about this product by Azpects. What sets it apart from the competition is Extra strong and durable formula. , Resistant to frost and ice. , Easy to use and apply. .
The best value product for most shoppers and where user satisfaction is continuously the highest is Joint-Tec 15kg - 20m² Coverage | Jointing Compound | Brush In Patio Grout For Patios & Block Paving | Self Setting All Weather Application | Brush In Grout (Granite Grey, 15kg) by Garden Store Direct based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Patio Slab Joint Filler and the best cost-to-value ratio is Bostik All Weather Jointing Compound - Grey - Ready to use - For Paths and Patio Joints - Sets Hard and Resists Weed Growth - 15kgat Bostik with a 28% discount.
Our list of the best Patio Slab Joint Filler is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Patio Slab Joint Filler in The UK

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PentaUSA Patio Grout - Ready Mixed Paver Grout, Polymeric Sand for Pavers and Paving Slabs, Tile Grout Repair for Patios, Stone Joints, Entryways, Gardens - Includes Grout Float - 400g

Grove & Gravel Kiln Dried Sand Brushing in Joint Gap Filling Paving Block Slabs Patio and Drives Fine Dry Aggregate Silica Large Sand Bag

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We scanned 594 products

We concluded that: