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DIY Sealants

DIY Sealants
  • MAPESIL AC – Internal Silicone Sealants – All Colours



    MAPESIL AC is a high quality, mould resistant sealant, which is ideal for internal use but can also be used in external applications. The product comes in a 310ml cartridge & has a range of 42 colours to choose from. Mapei also colour match this product to their Ultracolor plus grout range, creating a seamless transition between grout & silicone lines when used together.

    To view the Ultracolor plus range – please click here.


    – Mapesil AC should not be used in applications between joints of ceramic tiles & natural stone of light colour externally. Use Mapesil LM, which can be viewed here.
    – Should not be used for sealing of surfaces sensitive to acids, such as limestone. Again, use Mapesil LM.
    – Do not use on bituminous surfaces or highly plasticized material.
    – Mapesil AC’s chemical resistance to agents is typically excellent. However, we advise you to check the technical data sheet or do a small test.


    We have a number of tools on our website that would assist with the application of this product. We would recommend using a PC Cox Skeleton Gun to apply & a Bond-it Tooling Kit to aid in providing a professional finish.

    For further information, please visit the Mapei website here.

  • Everbuild 825 – External Sealant



    Everbuild 825 is an LM silicone which is odourless with a neutral cure. 825 adheres to a vast range of porous and non-porous surfaces without priming.



    – Slow skinning time provides excellent tooling. Ideal for large scale construction and glazing.

    – Excellent adhesion to most common surfaces. Eg., glass, metals, plastics, painted/unpainted wood, as well as PVC and polycarbonate.

    – External weathering properties, guaranteeing many years of exposure.

    – High viscosity formula meaning it will hold it’s structure & body on even large joints.


    For application guns for this product, please click here.

    For our full range of Ever build products, please click here to shop.


    For further information on all Everbuild products, please visit their website here

  • Everbuild Stixall 290ml



    Everbuild Stixall is a solvent-free hybrid of silicone and polyurethane technologies combined to create a high strength sealant adhesive. Stixall was designed for adhering most common building surfaces to each other.


    – Initial grab of high strength, no slip & gap filling properties.
    – High bonding strength.
    – For internal or external use.
    – Can be applied to wet surfaces.
    – Waterproof & weatherproof.
    – Quick curing.
    – Can be painted if required (with water-based paints – test an inconspicuous area before use).
    – Solvent-free.
    – Resistant to temperature extremes -40°C to +100°C.
    – Resistant to chemicals & petrol (10% dilute acids/alkali, most solvents).
    – Excellent resistance to UV radiation.


    For our full Everbuild range, please click here.

    For more information on Everbuild, please visit their website by clicking here.

    This product can be used as an alternative to CT1

  • Dowsil 786 Food Safe Silicone Sealant


    DOWSIL 786 is one part, flexible; fast curing silicone rubber sealant specifically designed for the sealing of refrigeration units and areas where contact with food is likely. Therefore making it ideal for food preparation areas.



    For more information, head over to the Dowsil website.

    For application guns, click here, and for a wider range of colours, why not try the Forever White range.

  • Dowsil 791 Weatherproof Low Mod Silicone



    Dowsil 791 is a low modulus, alkoxy and odourless silicone sealant. Specifically designed for weather sealing building components where high movement is expected. Dowsil 791 adheres to a huge range of both porous and non-porous materials without any priming.



    – Excellent slow skinning properties. Therefore, making it a great choice for large scale construction and glazing.

    – Excellent adhesion as it adheres to most common surfaces. For example, glass, metals, plastics and painted/unpainted wood, PVC and polycarbonates.

    – Brilliant external weathering properties, guaranteeing it will survive years worth of exposure.

    – High viscosity non-slump formula. It will hold it’s structure & body on larger joints.


    For any other Dow Corning products on our website, please click here.

  • Everbuild Roof and Gutter Sealant 295ml



    Everbuild Roof and Gutter Sealant is a quality sealant. It provides instant and permanent weather-proofing to a wide variety of applications. Adheres to most roofing materials such as bitumen, asphalt, felt, metals and wood.


    – Incorporates polymer additives to improve adhesion
    – Can be applied in wet conditions.
    – Remains permanently plastic beneath surface skin.
    – Excellent gap filling properties without shrinkage.
    – Excellent external weathering properties


    For all other Everbuild products on our website, please click here.

    For any further information on any of Everbuilds products, please visit their website here.

  • Soudal Soudafoam Gun Gap Filler 750ml


    Soudal Soudafoam Gap Filler is an expanding foam filler. Soudal Soudafoam Gap filling formulation with high 3D expansion. Easy to use, one component. Rapid curing. Excellent thermal and acoustic insulation properties. Primerless adhesion on most construction materials. Available in Hand-Held and Genius Gun®, Gun Grade and Click & Fix® versions both come with DuraValave.

    – Excellent stability (no shrinkage or post-expansion)
    – High filling capacity
    – Excellent adhesion on all surfaces (except PE, PP and PTFE).
    – High insulation value, thermal and acoustic
    – Excellent bonding properties.


    For all other foam systems on our website, please click here. for more in our Soudal range, click here.

    For any further info you may need on Soudal products, please visit their website here.

  • Dowsil 895 High Quality Structural Glazing Sealant


    Dowsil 895 – A neutral curing silicone sealant for structural bonding of metal, glass and other materials. DC 895 can also be used as an adhesive. Cures at room temperature, via the exposure to water vapours.


    Ensure all areas are thoroughly cleaned, removing all dirt and oil/liquids. Ensure that all areas are cleaned with the correct cleaning products.


    Dowsil 895 is a structural glazing sealant and applied at the first stage of manufacturing. This allows the correct time to seal for best performance. 

    Technical Specs

    – 2000 hours of exposure to UV radiation in hot water immersion.

    – 5000 load cycles in tension.

    – Resistance to extreme temperatures, salt spray and cleaning agents

    – 4000 hours exposure to UV radiation 

    For more details, please view the Dow Corning 895 technical datasheet attached.

    For all other Dow Corning products on our website, please click here. For tools, such as sealant guns and sealant finishing, please see our tools section here.

    For any further information, you may need, please visit the Geocel website here.

    Alternative products please see below, options like CT1 are available.

  • CT1 Sealant & Adhesive


    CT1 Sealant and Adhesive

    The One-Stop Product for all Sealing and Bonding

    CT1 is a construction adhesive that will never shrink or crack and can be structured and painted with any type of paint. Unlike other sealants, CT1 can be applied onto wet surfaces, making it ideal for use underwater in marine projects.

    Due to its ability to work with water, it is also the ideal product to seal baths and shower trays, windows, doors, roofing and guttering. CT1 Sealant and Adhesive is extremely versatile and is often used across multiple different projects by tradespeople. Available in a range of colours, simply select from the drop-down menu: Clear, Black, Brown, Grey, White, Silver, Oak and Beige. For a wide range of internal sealant colours please refer to Mapesil AC.

    As an adhesive, CT1 will create a formidable bond between any substrate, for instance, metals, glass, mirror, fibreglass, plastics, and stone, concrete, the list is endless. CT1 is often the first port of call for a tradesperson looking for a reliable construction adhesive. Above all, the adhesive to use for a multitude of applications is CT1, creating a permanent bond that will resist extreme loads, pressure and tensile strain.

    Order online today, discounts available and trade and credit account options via our website.

  • Everbuild General Purpose Silicone



    Everbuild General Purpose Silicone or GP Silicone is a multi-purpose silicone sealant. GP has several uses, cures quickly and provides a permanently flexible, high strength waterproof seal.


    – Permanently flexible.
    – Anti-fungal formula
    – Quick curing – low dirt pick up.
    – Low viscosity for fast application.
    – High strength waterproof seal.



    For application guns for this product, please click here.

    For all other Everbuild products on our website, please click here.

    Any further information you may need on Everbuild products, please visit their website here.

  • Sikaflex EBT+ 300ml



    Sikaflex EBT+ is a one part, elastic, polyurethane sealant & adhesive. It bonds to all common building substrates, is permanently flexible and has excellent grab and gap filling properties making it ideal for multiple applications.



    – 1-part, ready to use.
    – Flexible and elastic
    – Excellent grab and non-slip.
    – Fast curing rate.
    – Good weather and water resistance.
    – Permanently flexible and elastic.
    – Non-corrosive


    For application guns for this product, please click here. For all other Sika products on our website, please click here.

    For any further information you may need on Sika products, please visit their website here.


  • Everbuild Everflex 175 Universal Acrylic Sealant 300ml



    Everbuild Everflex 175 is a sealant that is acrylic based & suitable for internal and external use. It provides a flexible long lasting seal that adheres to virtually all materials. In addition, Everbuild Everflex 175 can be overpainted.


    – Permanently flexible
    – Mould resistant.
    – Overpaintable.
    – Easy cleanup.


    For all other Everbuild products on our website,  please click here.

    Any further information you may need on any Everbuild products, visit their website here.

DIY Sealants

There are many general-purpose silicone and DIY sealants available to help you get the job done right. We stock a wide selection of these sealants for home improvement, workplace application, and general DIY applications.

Silicone sealants are generally versatile in formulation which allows a wide variety of applications. However, some sealants are formulated for specific jobs and it is essential to choose the right product.

At Sealant Supplies Ltd, you can choose from our full catalogue of sealants. We have a wide variety of sealants including roof and gutter sealants, timber sealants, laminate sealants and more. All our sealants come from affordable and reputable brands that you can trust.

We also stock general purpose sealants which are more flexible and suitable for use on smooth, non-porous materials. Their waterproof properties make them ideal for use in showers, sinks, and baths. Some general purpose sealants contain anti-fungal properties which make them a perfect choice for bathrooms and kitchens.

General purpose sealants cure quickly after application providing a high-strength, permanent waterproof seal. This makes them ideal for glass, metal, wood, and plastics among others. General purpose sealants can withstand moisture, heat, and vibration which combined with their low viscosity aids quick application and drying.

Check out our catalogue of DIY silicone sealants to find the solution you need.