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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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  • CTEC_DModel_CT1_MiB%26Colour_v2_020321_ND_Brown.png

    CT1 Construction Sealant & Adhesive Brown 290ml (535506)

    CT1 is the only product in the market with TRIBRID Technology, making it 360% stronger than a traditional Hybrid Polymer. If you're looking for a clean, sealant, look no further than CT1 White. This pristine construction sealant creates highly durable...
  • C05-Dow-Corning-791-Weatherproofing-Black-Silicone.jpg.jpeg

    Dowsil 791 Weatherproofing Sealant Black 310ml

    This Dow Corning Weatherproofing Silicone is designed to protect areas from a variety of weather problems, including (not exclusive to) pollution, temperature extremes particularly during the summer and winter months and rain. The Silicone can be used...
  • Geocel%20310ml%20Clear%20Dow%20Corning%20785%20Sanitary%20Silicone%20Sealant.jpg.jpeg

    Dowsil Corning 785+ Sanitary Silicone Sealant Clear 310ml

    Resistant against bacteria including E. Coli, MRSA and Salmonella, this Sanitary Silicone Sealant is suitable for use in areas where hygiene is important. It also offers excellent adhesive properties allowing it to be used on most types of non-porous...
  • 101%20Multi-Purpose%20Brown%20Putty%201kg.jpg.jpeg

    Everbuild 101 Multi-Purpose Brown Putty 1kg

    Everbuild Multi-Purpose Premium Joiners Grade Wood Filler is an easy to use joiners grade filler which is ideal for filling small imperfections in wood. Once dry, the filler leaves a sandable surface which can be stained, painted, varnished, or dyed...
  • 101%20Multi-Purpose%20Brown%20Putty%201kg.jpg.jpeg

    Everbuild 101 Multi-Purpose Putty Natural 2kg

    Everbuild 101 natural multi purpose putty supplied in a 2kg pack for glazing and filling applications. Buy online today.
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    Everbuild 502 All Purpose Weatherproof Wood Adhesive 125ml

    Everbuild 502 all purpose weatherproof wood adhesive in a 125ml bottle for interior and exterior bonding. Buy online today.
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    Everbuild 502 All Purpose Weatherproof Wood Adhesive 250ml

    502 All Purpose Weatherproof Wood Adhesive is a high quality, resin-based wood adhesive for all wood bonding applications.
  • 904%20Roof%20Felt%20Adhesive%201%20Litre.jpg.jpeg

    Everbuild 904 Roof Felt Adhesive 1 Litre

    Everbuild Black Jack 904 Bitumen Roof Felt Adhesive is a cold applied, oxidised bitumen-based adhesive used to bond roofing felt to most surfaces including metal, concrete, timber and more.
  • 904%20Roof%20Felt%20Adhesive%201%20Litre.jpg.jpeg

    Everbuild 904 Roof Felt Adhesive 5 Litre

    Everbuild Black Jack 904 Bitumen Roof Felt Adhesive is a cold applied, oxidised bitumen-based adhesive used to bond roofing felt to most surfaces including metal, concrete, timber and more.
  • Everbuild%20All%20Purpose%20Contact%20Adhesive%20250ml.jpg.jpeg

    Everbuild All Purpose Contact Adhesive 250ml

    Stick 2 All Purpose Instant Contact Adhesive is a premium rubber-based contact adhesive suitable for use with a wide variety of materials for both professional and DIY use. Always allow the adhesive to become touch dry on both surfaces before bringing...
  • Everbuild%20All%20Purpose%20Contact%20Adhesive%20250ml.jpg.jpeg

    Everbuild All Purpose Contact Adhesive 750ml

    Stick 2 All Purpose Instant Contact Adhesive is a premium rubber-based contact adhesive suitable for use with a wide variety of materials for both professional and DIY use. Always allow the adhesive to become touch dry on both surfaces before bringing...
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    Everbuild All Purpose Powder Filler White (FILL15) 1.5KG

    All Purpose Powder Filler is for both internal and external use. This filler has added PVA power for extra strength and prevent shrinkage or cracks. Everbuild All Purpose Filler is suitable for repairs to plaster, brick, stone, and wood. It can be nailed...
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    Everbuild All Purpose Powder Filler White (FILL450) 450g

    All Purpose Powder Filler is for both internal and external use. This filler has added PVA power for extra strength and prevent shrinkage or cracks. Everbuild All Purpose Filler is suitable for repairs to plaster, brick, stone, and wood. It can be nailed...
  • Everbuild%20Aluminium%20Tape.jpg.jpeg

    Everbuild Aluminium Tape 100mm x 45m

    Everbuild aluminium foil tape measuring 100mm x 45m for insulation and HVAC applications. Buy online today.
  • Value%20Masking%20Tape.jpg.jpeg

    Everbuild General Purpose Masking Tape 19mm x 50m

    Everbuild general purpose masking tape measuring 19mm x 50m for decorating and paint masking. Buy online today.
  • Value%20Masking%20Tape.jpg.jpeg

    Everbuild General Purpose Masking Tape 25mm 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 product for your project.
  • Value%20Masking%20Tape.jpg.jpeg

    Everbuild General Purpose Masking Tape 38mm x 50m

    Everbuild general purpose masking tape measuring 38mm x 50m for painting and decorating. Buy online today.
  • Value%20Masking%20Tape.jpg.jpeg

    Everbuild General Purpose Masking Tape 50mm x 50m

    Everbuild general purpose masking tape measuring 50mm x 50m for clean paint edges. Buy online today.
  • Value%20Masking%20Tape.jpg.jpeg

    Everbuild General Purpose Masking Tape 75mm x 50m

    Everbuild general purpose masking tape measuring 75mm x 50m for decorating and protection. Buy online today.
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    Everflex Contract 125 One Hour Caulk White 125C3

    Everflex Contract 125 one hour paintable white caulk for filling gaps before decorating. Buy online today.
  • EVO-STIK%20THE%20DOGS%20CLEAR%20290ML%2030627550.png

    Evo-Stik 'The Dogs' Adhesive & Sealant Hybrid Clear 290ml (30627550)

    Evo Stik The Dogs hybrid adhesive and sealant in clear for strong, flexible bonding. Buy online today.
  • EVO-STIK%20THE%20DOGS%20GREY%20290ML%2030627542.png

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

    Evo Stik The Dogs hybrid adhesive and sealant in grey for interior and exterior use. Buy online today.
  • EVO-STIK%20THE%20DOGS%20WHITE%20290ML%2030627543.png

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

    Evo Stik The Dogs hybrid adhesive and sealant in white for durable professional bonding. Buy online today.
  • 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 and will not wash out of joints, making it ideal for...

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.