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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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    Evo-Stik Sticks Like C20 All Weather Ms Polymer Adhesive White

    EVO-STIK Sticks Like Adhesive is a superior strength, all weather adhesive. Suitable for use on a wide range of building materials. It can resist extreme temperatures and movement and will even stick to wet surfaces. For interior and exterior use.
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    Geocel Contractor Gun Foam 750ml

    Geocel Contractor Gun Foam is a polyurethane foam suitable for gap filling around window & door frames.
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    Soudal Mitre Bonding Kit Superglue & Activator Clear (130474)

    CYANOACRYLATE based high viscosity adhesive with aerosol activator, that is particularly useful for production lines and UPVC window trim. Activator reduces blooming and odour and it is fast acting, as curing will occur almost instantly. Used in the...
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    Evo-Stik 'The Dogs' Adhesive & Sealant Hybrid Black 290ml (30627544)

    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 wet surfaces. EVO-STIK THE DOGS cures under the...
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    Soudal Lead Sheet Sealant Grey 290ml (116726)

    Low modulus neutral cure silicone that eliminates the need for grouting. Long life. Adhesion to most building materials - all types of lead (BS:EN 12588 (1999) compatible, milled, rolled, sand cast, water-cooled), other metals, brickwork, concrete,...
  • Dow%20750ml%20Insta-Stik%20Multi%20Purpose%20Adhesive.jpg.jpeg

    Dupont Insta-Stik Straw Applied Multi Purpose Adhesive 750ml

    A more practical solution than bagged dry wall adhesive, this handheld can of Insta-Stik Adhesive applies using a gun and cures in just 3-5 minutes. It doesn't require any preparation and is suitable for bonding insulation board and plasterboard as well...
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    Everbuild Euroscrim Scrim Tape 48mm x 90m (484687)

    Euroscrim is a premium quality scrim tape that is made in Europe. It is quick and easy to apply, with it being self-adhesive. It's flexible and won't cause bubbles or blisters and can be used for drywall, plaster walls and coatings.
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    Geocel Top Gun Multi-Purpose Sealant Brown 290ml

    Geocel Top Gun Multi Purpose Silicone Sealant can be used for a variety of internal and external applications. It has excellent adhesion, gives a watertight seal and remains permanantly flexible.
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    Geocel Trade Mate Lead & Gutter Seal Grey 310ml

    Geocel Trade Mate Lead & Gutter Seal is a silicone rubber sealant for the installation and maintenance of gutter systems and downpipes, and pointing joints between lead flashing and brickwork, stone or masonry.
  • Hippo Plaster Scrim & Jointing Tape 90m x 50mm H18432 Hippo Plaster Scrim & Jointing Tape 90m x 50mm H18432

    Hippo Plaster Scrim & Jointing Tape 90m x 50mm H18432

    This special, easy to apply plaster scrim tape is available in two widths. Use it for sealing joints between plasterboard panels to prevent future cracks and helping to create a smooth plaster finish. This 90m roll uses sticky fibrous tape for...
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    Soudal Multi-Purpose Silicone Brown 270ml (116713)

    Acetoxy silicone sealant that cures to form a flexible, durable weathertight seal on many common building surfaces, including glass, metals, wood and ceramic tiles. Suitable for internal and external use on general construction items, masonry,...
  • Dow%20750ml%20Insta-Stick%20Adhesive%20Hand%20Held%20Can.jpg.jpeg

    Dupont Insta-Stik Gun Applied Multi Purpose Adhesive 750ml

    Dupont Insta Stik is a polyurethane foam adhesive which can be used to fix plasterboard, insulation board and most common building substrates quickly and easily. There are no tools or mixing required and no bags of heavy dry wall adhesive.
  • BOSTIK%20PRO%20SEALANTS%20-%20PU91%20POLYURETHANE%20300ML%2030623108%2C%2030623103%2C%2030623104%2C%2030623143.png

    Bostik Pro Sealant PU91 Construction Polyurethane Grey 300ml (30623104)

    PU91 by Bostik is a professional grade construction polyurethane sealant developed for sealing construction joints subject to high movement. This grey PU sealant has a high modulus formulation and is extremely elastic with up to 25% movement capability...
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    C-Tec CT1 Sealant & Adhesive Clear 290ml (539506)

    CT1 is the only product in the market with TRIBRID Technology, making it 360% stronger than a traditional Hybrid Polymer. It is scientifically proven to have excellent colour retention, and stays clear! Unique adhesion on virtually any material in most...
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    Everbuild Aluminium Tape 75mm x 45m

    Mammoth Aluminium Tape is a silver heat and light reflective aluminium foil tape. It is heat resistant up to 180C, flame retardant to Class O, and has excellent moisture resistance. This tape is ideal for use as a vapour barrier between foil-faced...
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    Everbuild Fine Surface Ready Mixed Filler 600g

    Fine Surface Filler is an easy to use ready mixed filler for filling small holes and surface imperfections in most porous surfaces such as plaster and wood. Dries to a very smooth finish that can be painted or papered.
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    Geocel Top Gun Multi-Purpose Sealant White 290ml

    Geocel Top Gun Multi Purpose Silicone Sealant can be used for a variety of internal and external applications. It has excellent adhesion, gives a watertight seal and remains permanantly flexible.
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    Soudal Repair Express Plaster White 900ml (152306)

    High speed acrylic polymer for lightweight plaster repair jobs. For an easy and quick reparation or filling in walls and ceiling such as cracks or screw holes then this product by Soudal could be the solution. Can be applied by trowel or gun and is...
  • Bostik%20Feltfix%20Bituminous%20Roof%20Felt%20Adhesive%205L%2030811935.jpg.jpeg

    Bostik Feltfix Bituminous Felt Roof Adhesive Black 5 Litre (30811935)

    Feltfix is a Bituminous Roof Felt Adhesive by Bostik, is a cold applied solvent-based bituminous waterproofing adhesive. It has high initial grab for bonding bituminous roofing felts to asphalt, felt, metal, timber and concrete. It is also suitable for...
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    Soudal Bathroom & Kitchen Sanitary Silicone Clear 290ml (144383)

    Low modulus acetic curing sanitary sealant silicone, that contains a powerful anti-fungicidal agent. This product has very fast skinning time and final cure with primerless adhesion on most common construction materials. It is resistant to UV, rain and...
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    Soudal Genius Gun Gap Filler Expanding Foam Champagne 600ml (135234)

    Moisture curing, polyurethane expanding foam for all general purpose gap filling. Adheres to most common building materials, resistant to water, heat and ageing. Excellent thermal and acoustic insulation values. Can be cut, sanded, plastered and painted...
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    Soudal Multi-Purpose Silicone Brilliant White 270ml (121643)

    Acetoxy silicone sealant that cures to form a flexible, durable weathertight seal on many common building surfaces, including glass, metals, wood and ceramic tiles. Suitable for internal and external use on general construction items, masonry,...
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    Bostik Pro Sealant S41 Window & Door Frame Silicone Brown 310ml

    A brown S41 Neutral Cure Window & Door Frame Silicone by Bostik, is a professional grade neutral cure silicone sealant, developed for sealing window and door frame joints. This silicone sealant is also available in either Anthracite or Clear, so it fits...
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    Bostik Pro Sealant S41 Window & Door Frame Silicone White 310ml

    This silicone sealant by Bostik is the S41 Neutral cure window & door frame silicone, a professional grade neutral cure silicone sealant, developed for sealing window and door frame joints. This sealant is suitable for interior and exterior...

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.