Discover premium <a href="/building-supplies/cements-additives/cement.cat">cement</a> and additives at B&Q. Our top-quality products ensure strong, durable foundations for any construction project. Enhance performance with various additives, including <a href="/building-supplies/cements-additives/plasticiser.cat">plasticiser</a> and <a href="/building-supplies/cements-additives/mortar.cat">mortar</a>, and find the tools necessary to complete your project in one place. Trust us for all your building supply needs; shop now for reliable, high-performance building materials.
UltraTile ProLevel One Floor Leveller
Sponsored
UltraTile ProLevel Flexible Two Part Floor Leveller Compound 20kg + 4L
Sponsored
Mapei Ultraplan Renovation Screed Self Levelling Compound
Sponsored
Blue Circle Postcrete, 20kg Bag - Ready mixed
Blue Circle General Purpose Grey Cement, 25kg Bag
Blue Circle Brown Slablayer, 20kg Bag
Blue Circle Mastercrete Grey Cement, 25kg Bag
Blue Circle Quality assured Mortar, 20kg Bag - Ready mixed
Blue Circle Multipurpose Concrete, 20kg Bag - Ready mixed
Leak Stop Rapid Roof Repair Paint - Black - 1 Litre - Instant Waterproof Roof Sealant
Sponsored
Blue Circle High strength Concrete, 20kg Bag - Ready mixed
Blue Circle Quick set Concrete, 20kg Bag - Ready mixed
No Nonsense Screed Interior Floor-levelling compound
Blue Circle Slablayer Plus Grey Slablayer, 20kg Bag
No Nonsense Interior Floor-levelling compound
Blue Circle Masterlay External Floor levelling compound, 20kg Bag
UltraTile ProLevel Flexible Two Part Floor Leveller Compound 20kg + 4L
Blue Circle Masterlay Floor levelling compound, 20kg Bag
Sika Tarmac restorer, 5L Jerry can
Mapei MapePave Grey Paving slurry, 20kg Bag
Weber Saint-Gobain Render, 25kg Bag - Requires mixing before use
Blue Circle Quality assured Mortar, 5kg Tub - Ready mixed
20kg Cempost Post Concrete Fast Setting Concrete for Fence & Gate Posts 1 x 20kg
Mapei Ultraplan Renovation Screed Self Levelling Compound
Sika Sikafloor Flex Internal Floor levelling compound, 20kg Bag
Blue Circle Postcrete Cement 20kg (x5 Bags)
UltraTile ProLevel One Floor Leveller
Thompsons One Coat Patio & Block Paving Acrylic-based Clear Multi-purpose Sealant, 5L
Multi-Purpose Concrete Bag Ready Mixed, Just Add Water, Suitable for All Concrete Jobs, Driveways, Paths, Walls, Steps and more, W
Sika Damp Proofing Slurry Grey, 25kg Waterproof Coating for Preventing Dampness & Water Penetration on Concrete & Masonry Surface
Stormdry Masonry Waterproofing Cream (5L) 25-Year BBA Approved Exterior Brick, Stone, Concrete, Stone, Mortar, Sandstone Sealer
Glean Patio Grout Jointing Compound Weed Resistant Paving Joint - Basalt - 14kg
Everbuild Sika Sika Fastfix All Weather Multi Colour (Dark Buff 15kg)
Mapei Ultraplan Renovation 3240 Internal Floor levelling screed, 25kg Bag
Liquid Rubber Roof Coating 5 Litres Instant Leak Seal Technology Quick Drying, One Coat Waterproofing Sealant Black
Stormdry XR Mortar (310ml x3) Waterproof Repair Mortar for Bricks & Masonry. Ready-to-Use, Cement-Free Mix for Cracks & Pointing
S-FIXX Flexicoat Liquid Rubber 2L
Sika Ready mixed Buff Paving joint repair grout, 15kg Tub
Volden General Purpose Concrete, 15kg Tub - Requires mixing before use
Joint-it Simple Grouting Compound 20kg - Dark Grey
UltraTile ProLevel Ultimate Semi-Rapid Levelling Compound 20kg
Glean Patio Grout Jointing Compound Weed Resistant Paving Joint - Pure Light Grey - 14kg
Blue Circle Quick repair Concrete, 2.5kg Tub - Ready mixed
Blue Circle Mastercrete Grey Cement, 12.5kg Handy bag
40kg Cempost Post Concrete Fast Setting Concrete for Fence & Gate Posts 2 x 20kg
Nexus ProJoint Titan Heavy Duty Brush in Jointing Compound- Neutral
Bond It Resistant Glass Fibre Woven Render Reinforcing Monster Mesh - 1m x 50m Roll
Blue Circle Multipurpose Concrete, 5kg Tub - Ready mixed
Sika Exterior Liquid waterproofing , 5000ml
Rapid Post Mix Cement Concrete Fence Post Quick Set No Mixing 20KG Gate Post
Silver Star Easy Mix Mortar 20kg Ready Mixed Mortar for Bricklaying, Bedding, Patching & DIY Jobs Pre-Blended Cement Mortar for In
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Cements and additives are essential for a wide range of building, landscaping, and repair projects. From laying foundations to fixing patio slabs, the right product ensures strength, stability, and long-lasting results. Popular choices like Blue Circle Concrete and ready mixed concrete are perfect for everything from paths to shed bases, offering easy application and consistent performance. For bricklaying and general masonry work, Volden Mortar and ready mixed mortar come in various shades including grey mortar and white mortar, making it easy to match or contrast with existing structures. Smaller tasks are made even easier with 5kg mortar packs—ideal for DIYers tackling patch repairs or repointing.
When it comes to patios, both grey patio grout and ready mixed patio grout are excellent for securing paving slabs and preventing weed growth. For specialist jobs, fire cement provides heat-resistant sealing around stoves and flues, while postcrete offers quick, no-mix installation for fence posts. If you’re restoring old masonry, products like concrete repair, repair mortar, and pointing mortar are designed to fill cracks and reinforce damaged areas, ensuring a durable, weather-resistant finish. Whatever your project, explore our full range of building supplies to find the perfect cement, mortar or additive to get the job done right.
