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Sealants & Adhesives

Sealants and adhesives are essential for bonding, sealing, and protecting materials in construction and DIY projects. Whether you’re fixing, filling gaps, or creating waterproof seals, our range includes high-performance products suitable for a wide range of applications.

From grab adhesives for strong instant bonding to silicone sealants for flexible waterproof finishes, we supply reliable solutions for both trade professionals and home users.

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  • Value%20Masking%20Tape.jpg.jpeg

    Everbuild General Purpose Masking Tape 38mm x 50m

    This tape is a general-purpose masking tape from Everbuild that is easy to tear, residue-free, and ideal for many uses such as paint masking. Available in a range of widths so you can use the right...
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    Everbuild General Purpose Masking Tape 50mm x 50m

    This tape is a general-purpose masking tape from Everbuild that is easy to tear, residue-free, and ideal for many uses such as paint masking. Available in a range of widths so you can use the right...
  • Value%20Masking%20Tape.jpg.jpeg

    Everbuild General Purpose Masking Tape 75mm x 50m

    This tape is a general-purpose masking tape from Everbuild that is easy to tear, residue-free, and ideal for many uses such as paint masking. Available in a range of widths so you can use the right...
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    Everflex Contract 125 One Hour Caulk White 125C3

    Everflex Contract 125 One Hour Caulk is a fast-drying flexible decorators filler and sealant that remains permanently flexible. Can be overpainted with most paint types or covered over with...
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    Evo-Stik 'The Dogs' Adhesive & Sealant Hybrid Clear 290ml (30627550)

    EVO-STIK THE DOGS is a versatile, all-weather, advanced hybrid SMP technology for interior use. EVO-STIK THE DOGS provides a strong, flexible bond for most building materials and can even be used on...
  • EVO-STIK%20THE%20DOGS%20GREY%20290ML%2030627542.png

    Evo-Stik 'The Dogs' Adhesive + Sealant Hybrid Grey 290ml (30627542)

    EVO-STIK THE DOGS is a versatile, all-weather, advanced hybrid SMP technology for interior use. EVO-STIK THE DOGS provides a strong, flexible bond for most building materials and can even be used on...
  • EVO-STIK%20THE%20DOGS%20WHITE%20290ML%2030627543.png

    Evo-Stik 'The Dogs' Adhesive + Sealant Hybrid White 290ml (30627543)

    EVO-STIK THE DOGS is a versatile, all-weather, advanced hybrid SMP technology for interior use. EVO-STIK THE DOGS provides a strong, flexible bond for most building materials and can even be used on...
  • Evo-Stik%20Fast%20Set%20Waterproof%20Grout%20For%20Walls%20White.jpg.jpeg

    Evo-Stik Fast Set Waterproof Grout for Walls White 1.5kg

    Evo-Stik Wall Tile Grout Mould Resistant is a fast setting cement-based grout, suitable for finishing joints of internal and external ceramic tile installations. When set, it is completely waterproof...
  • 20kg%20Evo-Stik%20Grey%20Tile%20A%20Floor%20Fast%20Set%20Adhesive%20For%20Ceramic%20Tiles.jpg.jpeg

    Evo-Stik Tile A Floor Fast Set Adhesive for Ceramic Tiles Grey 20kg

    Evo-Stik Wall Tile Grout Mould Resistant is a fast setting cement-based grout, suitable for finishing joints of internal and external ceramic tile installations. When set, it is completely waterproof...
  • Evo-Stik%20Tile%20A%20Wall%20Non-Slip%20Adhesive%20Economy.jpg.jpeg

    Evo-Stik Tile A Wall Non-Slip Adhesive Economy

    This Non-Slip Wall Adhesive is suitable for interior use to fix ceramic tiles. The adhesive is incredibly strong, offering excellent initial grab properties. The product is ready to use, without the...
  • Evo-Stik%20Tile%20A%20Wall%20Non-Slip%20Adhesive%20Economy.jpg.jpeg

    Evo-Stik Tile A Wall Non-Slip Adhesive Large

    This Non-Slip Wall Adhesive is suitable for interior use to fix ceramic tiles. The adhesive is incredibly strong, offering excellent initial grab properties. The product is ready to use, without the...
  • Evo-Stik%20Tile%20A%20Wall%20Non-Slip%20Adhesive%20Economy.jpg.jpeg

    Evo-Stik Tile A Wall Non-Slip Adhesive Standard

    This Non-Slip Wall Adhesive is suitable for interior use to fix ceramic tiles. The adhesive is incredibly strong, offering excellent initial grab properties. The product is ready to use, without the...
  • Geocel Contractor B2 Gun Foam 750ml

    Geocel Contractor B2 Gun Foam 750ml

    Contractor B2 Rated Foam is a moisture curing polyurethane foam that is ideal for sealing and filling gaps in partitions, sealing through gaps and service trunkings.
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    Geocel Contractor B2 Rated Straw Foam 750ml

    Contractor B2 Rated Foam is a moisture curing polyurethane foam that is ideal for sealing and filling gaps in partitions, sealing through gaps and service trunkings.
  • Geocel%20Trade%20Mate%20Frame%20Seal%20Clear%20310ml.jpg.jpeg

    Geocel Trade Mate Frame Seal Clear 310ml

    Geocel Trade Mate Frame Seal is a low modulus neutral silicone sealant for external sealing around door and window frames including PVC-U, coated aluminium & painted surfaces.
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    Geocel Trade Mate Sanitary Sealant Clear 310ml

    Geocel Trade Mate Sanitary Seal is a fast curing silicone sealant, ideal for sealing around sanitary units and non-porous surfaces. It provides excellent unprimed adhesion to a variety of substrates...
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    Grabo Brace Seal (GRAB112)

    The Grabo Brace Seal is a low-profile, precision-engineered seal designed to provide superior control when lifting thinner or more delicate materials. Featuring a full silicone footprint, it forms a...
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    Grabo RockSeal (GRAB109)

    The Grabo RockSeal is designed to handle rough, uneven, or textured materials with ease. Ideal for lifting rocks, stones, wood, slate, and rough concrete, it provides a strong and reliable seal even...
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    Grabo Slender Foam Rubber Seal (GRAB107)

    The Grabo Slender Seal is the ideal accessory for lifting long, narrow, or awkward materials with precision and ease. Designed to fit all existing Grabo models, this innovative seal makes it simple...
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    Grabo Standard Replacement Foam Rubber Seal (GRAB106)

    The Grabo Foam Rubber Seal is a durable, high-friction replacement designed to maintain the strong lifting performance of your Grabo tool. Over time and with continuous use, seals naturally wear...
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    IKO IkoPro Stickall 310ml

    Iko Pro Stickall 310ml is a bituminous sealing glue that is dense and suitable for use in all weather as it adheres to most building surfaces even if they are wet. Stickall offers excellent adhesive...
  • Luxigraze%20Self%20Adhesive%20Jointing%20Tape_New.png

    Luxigraze Jointing Tape Self Adhesive 200mm x 5m

    This durable and strong self adhesive tape allows for the speedy joining of artificial grass, creating instant seams and negating the need for adhesives.
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    Luxigraze Tape Cut-to-Size 1m

    This strong, geotextile fabric is designed to be used in conjunction with Luxigraze Adhesive, to join artificial grass.
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    Namgrass Aqua Bond Glue Tube Adhesive 310ml

    This will ensure your Namgrass stays put without a fuss. It can be used on a variety of surfaces to secure your artificial grass down and works brilliantly on joining tape.

Sealants & Adhesives

Grab adhesives

Ideal for strong, instant bonding without the need for nails or screws:

Perfect for flexible, waterproof sealing:

  • Bathroom sealants
  • Exterior silicone
  • Weatherproof sealants
  • Expanding foam

Used for filling gaps and insulation:

Specialist adhesives & sealants

Designed for specific materials and applications:

  • Wood adhesives
  • Masonry sealants
  • High-temperature sealants

Choosing the right sealant or adhesive

When selecting sealants and adhesives, consider:

  • Application – bonding, sealing, or gap filling
  • Environment – interior or exterior use
  • Water resistance – essential for bathrooms and outdoor areas
  • Material compatibility – wood, metal, masonry, or plastic

Complete your project

You may also need:

If you are working on a new project or renovating an existing outdoor space, pop into your local Howarth branch or browse our website. We also offer Click & Collect and Delivery options.

Shop Sealants & Adhesives by Type

Frequently Asked Questions

How to use silicone sealant?
To use silicone sealant, prepare the area that needs to be sealed, apply the sealant, smooth the sealant, and then leave it to dry.
How much tile adhesive do I need?
You will need 1.8kgs per 1mm depth per m2.
How to mix grout?
To mix grout, add water to the grouting powder in the manufacturer-recommend ratio. Tilt mixing bucket and stir with a grout-mixing knife. Then, adjust grout consistency by adding more powder or water. Let the grout rest for up to 10 minutes before using a grout knife to mix thoroughly once more.
How to use wood filler on a door frame?
To use wood filler on a door frame, start off by scraping out any flaking and splinters of paint from the damaged parts by using a wire brush. Then, it is important to soften or mix the filler as per instructions. It could involve stirring to the point of hardening, kneading until it softens, or mixing different substances until you get a similar colour. At this point, apply the ready filler on a putty knife. You will then scrape it onto the frame’s damaged area. After you’ve done that, allow a reasonable time for the filler to dry.
How to use expanding foam?
To use expanding foam, first clean the area, removing any debris and dirt to ensure there will be no contaminants. Put on disposable gloves to ensure you stay as safe as possible (as expanding foam can burn and will stick to your skin if it gets on you), prepare the can by removing the top and screwing in the applicator nozzle onto the valve, making sure not to use too much. Then, finally, shake the can well and then insert the nozzle into the hole you wish to fill, holding the can upside down for the best application. Make sure to leave the foam to set, which will take between 30 minutes and 12 hours depending on the amount of foam you’ve used. Once the foam has dried, you can cut and sand it down to the desired fit.
What is grab adhesive used for?
Grab adhesive is used for bonding materials quickly without the need for screws or nails.
What sealant is best for waterproofing?
Silicone sealants are commonly used for waterproofing due to their flexibility and resistance to moisture.
Can sealants be used outdoors?
Yes, exterior sealants are designed to withstand weather conditions and provide long-lasting protection.