Cement Additives & Building Chemicals

Improve the performance of your mortar mix with our professional range of cement additives. Whether you require plasticisers or waterproofers, rapid set agents through to frostproofers, our products are guaranteed to help you achieve the strength and durability your site demands.

Browse our excellent range alongside our concretes and other aggregates for everything you need to start your project.

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      Evercryl One Coat Roof Repair Compound
      Sika Evercryl One Coat Roof Repair Compound
      Bitumen & Roof Sealants
      56494M
      From £21.73 inc. VAT
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    • 1L Cementone Concentrated Mortar Plasticiser
      Bostik 1L Cementone Concentrated Mortar Plasticiser
      Cement Additives & Building Chemicals
      72877
      Optimix Mixes 125 Bags
      £7.25 inc. VAT
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    • Size
      Patination Oil
      Bond It Patination Oil
      Cement Additives & Building Chemicals
      647047M
      Now From £4.50 inc. VAT Was £5.95 inc. VAT | Save £1.45 inc. VAT
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    • Colour
      Sika Maxmix Cement Colour 1L
      Sika Maxmix Cement Colour 1L
      Cement Additives & Building Chemicals
      48178M
      £11.17 inc. VAT
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    • 5L Cementone SBR - Toughens & Improves Adhesion
      Bostik 5L Cementone SBR - Toughens & Improves Adhesion
      Cement Additives & Building Chemicals
      73164
      £16.85 inc. VAT
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    • Evo Bond PVA 5l Building Adhesive - Primer - Admixture & Sealer
      Evo-stik Evo Bond PVA 5l Building Adhesive - Primer - Admixture & Sealer
      Cement Additives & Building Chemicals
      72974
      £12.95 inc. VAT
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    • Size
      SBR Admixture - Waterproof Admixture Bonding Agent
      Bond It SBR Admixture - Waterproof Admixture Bonding Agent
      Cement Additives & Building Chemicals
      647098M
      From £11.17 inc. VAT
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    • Colour
      1KG Cementone Mortar Dye -Various Colours
      Bostik 1KG Cementone Mortar Dye -Various Colours
      Cement Additives & Building Chemicals
      73083M
      £7.35 inc. VAT
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    • Size
      xL Fire Cement - Fire Bricks, Stove & Flue Cements Ovens Mortar
      Sika xL Fire Cement - Fire Bricks, Stove & Flue Cements Ovens Mortar
      Adhesives & Glue
      362883M
      From £6.65 inc. VAT
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    • Next Day Delivery Order by 12pm noon
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    • 1L Opti-Mix Concentrated Mortar Plasticiser
      Sika 1L Opti-Mix Concentrated Mortar Plasticiser
      Silicones & Sealants
      364037
      From £8.23 inc. VAT
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    • Size
      Fibres For Concrete -150g - 750g
      Bostik Fibres For Concrete -150g - 750g
      Cement Additives & Building Chemicals
      61603M
      From £8.95 inc. VAT
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    • 5L Cementone Concrete Mould Oil
      Bostik 5L Cementone Concrete Mould Oil
      Cement Additives & Building Chemicals
      61751M
      £15.95 inc. VAT
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    • Size
      General Purpose PVA - Primer - Sealer - Bonding Agent
      Evo-stik General Purpose PVA - Primer - Sealer - Bonding Agent
      Cement Additives & Building Chemicals
      61697M
      From £4.90 inc. VAT
      In Stock | Usually dispatched within 24 hours
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    • 5L Clear Release Oil
      Sika 5L Clear Release Oil
      Cement Additives & Building Chemicals
      56548
      £14.98 inc. VAT
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    • Colour
      3 x 825 Alcoxy LM Silicone Sealant
      Sika 3 x 825 Alcoxy LM Silicone Sealant
      Cleaner
      360880MX3
      £12.85 inc. VAT
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    • 750ML Professional Gun Grade Expanding Foam Kit with 500ML Foam Cleaner & Applicator Gun
      Sika 750ML Professional Gun Grade Expanding Foam Kit with 500ML Foam Cleaner & Applicator Gun
      Silicones & Sealants
      361615x1M
      From £25.07 inc. VAT
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    • Febond Professional PVA Adhesive Primer-Sealer Admixture
      Febond Professional PVA Adhesive Primer-Sealer Admixture
      Cement Additives & Building Chemicals
      360171M
      From £4.95 inc. VAT
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    • 250ml/750ml Fast-Drying Wood Stain - Various Colours
      Sika 250ml/750ml Fast-Drying Wood Stain - Various Colours
      Jointing Compounds & Grouts
      362999M
      From £7.72 inc. VAT
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    • 5L Cemstrip Eco Friendly Cement Mortar Concrete Stain Remover
      Sika 5L Cemstrip Eco Friendly Cement Mortar Concrete Stain Remover
      Silicones & Sealants
      363995
      £24.72 inc. VAT
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    • 1L Cemstrip Cement Stain Mortar Remover Sprayable Eco Friendly
      Sika 1L Cemstrip Cement Stain Mortar Remover Sprayable Eco Friendly
      Cement Additives & Building Chemicals
      364029
      £9.20 inc. VAT
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    • 1L Salt Away Sprayable - Removes Salt & Efflorescence
      Sika 1L Salt Away Sprayable - Removes Salt & Efflorescence
      Silicones & Sealants
      364053
      £7.15 inc. VAT
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    • 1L Opti-Tone Cement Mortar Colourant Dye - Black Building Ad- Mix
      Sika 1L Opti-Tone Cement Mortar Colourant Dye - Black Building Ad- Mix
      Cement Additives & Building Chemicals
      365599
      £7.71 inc. VAT
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    • 1kg 208 Powder Mortar Tone Dye Cement Colour
      Sika 1kg 208 Powder Mortar Tone Dye Cement Colour
      Silicones & Sealants
      364568ML
      £6.95 inc. VAT
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    • 5L Cementone Freeflo - Retarder - Waterproofer - Plasticiser
      Bostik 5L Cementone Freeflo - Retarder - Waterproofer - Plasticiser
      Cement Additives & Building Chemicals
      61735M
      £9.95 inc. VAT
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    View 24

    Rapid Hardening & Quick Set Cement Additives

    For ideal working conditions and reduced water, choose our mortar plasticisers, perfect for bricklaying and blockwork. These high-quality substances make application easy and mitigate any risk of frost. 

    If moisture protection is essential, our waterproofing additives, such as SBR, create water-resistant mixes that increase the flexibility of your cements and mortars, improving adhesion and reducing shrinkage.

    Excellent Additives for Concrete, Mortar & Render

    Are you wondering which cement additive is right for you? Rapid hardening additives help you speed up your setting times and achieve a high rate of early strength development. Reliable frost-proofer solutions protect your mixes in freezing weather. We also stock cement dyes for decorative concrete that are guaranteed not to fade, plus bonding agents for controlling surface finishes and improving adhesion on complex surfaces.

    Whether mixing on-site or purchasing ready-to-use products, our cement additives integrate easily into your workflow, providing consistent, professional results every time. Browse our building range today for dependable concrete additives that meet trade demands while always offering outstanding quality.