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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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  • 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.
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    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 including ceramics, plastics and enamel.
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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 secure brace inside the vacuum chamber to prevent...
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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 on surfaces with height variations of up to 10mm. Made...
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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 to handle items such as pavers, long tiles, pipes, kerb...
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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 down, reducing lifting capacity—but replacing the...
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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 strength and is resistant to sagging in high...
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    Luxigraze Green Polyurethane Adhesive (310ml)

    Our Artificial Grass Adhesive is designed to bond the underside of artificial grass to jointing tape and/or a solid sub-base, for a secure finish.
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    Luxigraze Jointing Tape 200mm x 20m

    This strong, geotextile fabric is designed to be used in conjunction with Luxigraze Adhesive, to join artificial grass.
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    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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    Ronseal High Performance Wood Filler Natural 550g

    This Wood Filler is a high performing and incredibly tough product that repairs most types of wood damage. It is suitable for use on various parts of doors and windows, including sills and frames. The product can cure wet rot, preventing it from...
  • Ronseal High Performance Wood Filler White 1kg

    Ronseal High Performance Wood Filler White 1kg

    White in colour, this High-Performance Wood Filler is ideal for repairing white painted wooden items without the need to paint over. Suitable for doors and windows, as well as frames and window sills, the Wood Filler is designed to cut existing wet rot,...
  • Ronseal High Performance Wood Filler White 550g

    Ronseal High Performance Wood Filler White 550g

    White in colour, this High-Performance Wood Filler is ideal for repairing white painted wooden items without the need to paint over. Suitable for doors and windows, as well as frames and window sills, the Wood Filler is designed to cut existing wet rot,...
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    Soudal 5-Minute Trade PU Construction Adhesive Beige 290ml (152330)

    5-minute polyurethane (PU) based construction adhesive is highly water resistant with a rapid curing time. It expands slightly during the curing process to fill gaps, making it suitable for uneven surfaces. It has an extremely high end strength. Even...
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    Soudal B2 Expanding Gun Foam 750ml (128450)

    Gun Grade Fire Rated one component, rapid curing expanding polyurethane foam filler from Soudal. This expanding foam offers excellent thermal and acoustic insulation properties and brilliant primerless adhesion on most construction materials. For use in...
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    Soudal B2 Fire Class Trade Expanding Foam 750ml (128449)

    Hand Held Fire Rated one component, rapid curing expanding polyurethane foam filler by Soudal. Excellent thermal and acoustic insulation properties as well as great primerless adhesion on most construction materials. For use in passive fire protection...
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    Soudal Contact Adhesive Spray Transparent 300ml (132675)

    Sprayable contact adhesive, for the universal bonding of most materials. Ideal for bonding carpet and floor coverings. The ready to use formulation can achieve both permanent or temporary adhesion. Used for the bonding of paper, cardboard, photos and...
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    Soudal Express Cement Repair Beige 290ml (128000)

    High speed acrylic polymer based, textured repair cement. For easy and quick reparation or filling of joints and cracks in concrete. Can be applied by trowel or gun. sandable and over-paintable once dried. Can be used for internal and external...
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    Soudal Firecryl Fire Rated White 310ml (106329)

    Fire rated acrylic sealent and filler with up to 4 hours fire rating. Intumescent at temperatures above 120'C which prevents the penetration of smoke and fire through joints and gaps. For use in passive fire protection systems as joint sealant or filler;...
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    Soudal Fix All Black Triple Pack Adhesive 290ml (3 Pack) (167224)

    Super fast curing adhesive with exceptional final bond strength. Based on SMX Polymer Technology, Turbo has rapid strength build-up after 20 minutes, with final bond strength achieved in 3 hours. For all types of bonding applications, onto all types of...
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    Soudal Fix All Crystal Clear 290ml (118779)

    Super fast curing adhesive with exceptional final bond strength. Based on SMX Polymer Technology, Turbo has rapid strength build-up after 20 minutes, with final bond strength achieved in 3 hours. For all types of bonding applications, onto all types of...

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.