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Expansion Joints

Expansion Joints
  • CM SFS Stain Free Silicone

    £5.85

    CM SFS Stain Free Silicone is a moisture-cured one-component neutral silicone sealant used mainly for building and glazing joints. With it moisture cure allowing it to cure at room temperature, producing a flexible seal. CM SFS Stain Free Silicone adheres to most common building surfaces without the need for primer. Fully cured movement capability of -/+50%.

    Typical Uses

    CM SFS is designed for jointing or bonding in building and glazing applications such as:

    • Precast panels and curtain wall expansion joints.
    • Windows or doors perimeter joints
    • Aluminium, wood, UPVC glazing joints.
    • Roofs and chimney joints.
    • Venting or gutter joints
    • Bonding mirrors
    • Kingspan panels

    Limits of Use

    • CM SFS is not recommended for use on materials where migration of constituents can take place, e.g. certain rubbers.
    • Not be used for jointing aquariums or swimming pools. Not ideal for permanent immersion.
    • CM SFS, once cured, should not be painted (poor coverage and adhesion of paint).
    • CM SFS is not recommended where abrasion or physical abuse will be encountered.
    • CM SFS must not be used for food contact.
    • When in contact with alkyd paints a slight yellowing can appear on the surroundings of the joint.

     

    Please see the attached datasheet for more information on CM SFS Stain Free Silicone.

  • CM Stonesil

    £5.50

    CM Stonesil is an elastic single-component silicone sealant for indoor and outdoor use, with up to 50% movement tolerance.

    Uses and Application Areas

    • Low modulus non-staining sealant with anti-fungal properties.
    • Fast cure rate.
    • Outstanding UV, weather, and ageing resistance.
    • Adhesion to numerous substrates, such as granite, composite stones, ceramic tiles, brickwork, metals, plastics also compatible with copper.
    • Low modulus (conforms to ISO 11600 F&G 25 LM).
    • Movement capability up to 50% (ASTM C920 class 50).
    • Non-staining (ISO 16938-1, ASTM C 1248).
    • Sealing joints in premier bathrooms & kitchens.
    • Glass to glass joints.
    • Sealing glass to metal.
    • Expansion joints in brickwork/stonework.
    • Marine applications.

    Joint dimensions

    The minimum joint size suggested is 5mm x 5mm for internal use and external use 10mm x 8 mm (width x depth). Maximum recommend width of the joint is 30mm x 30mm, but the joint depth should be roughly half the joint width for the ideal seal.

    Tooling

    After applying the sealant, it can be smoothed in the joint with water or with a neutral, non-staining water-based smoothing agent and a suitable tool (e.g., Bond-It Applicator Kit). Smoothing the sealant isn’t just recommended for aesthetic reasons, but it will assist in the bonding of the sealant to the substrate.

  • Dowsil 791 – Weatherproof Low Mod Silicone – Box of 12

    £68.71£71.06

    Dowsil 791 or DC 791 is a low modulus, neutral cure, alkoxy, odourless silicone sealant. It is specifically designed for the weather sealing of building components where high movement is anticipated. Dowsil 791 adheres to a wide range of both porous and non-porous surfaces without the need for priming.

    USES

    – Perimeter pointing internally and externally around uPVC /wood and aluminium.
    – Sealing and as an adhesive onto uPVC, plastic trims and components.
    – Can be used for sealing soft metals. For instance, lead, copper and zinc.
    – For weather sealing and joint sealing on pre-formed panels, Can also be used on curtain walls and glazing sealing.
    – Glass to glass sealing and glass to aluminium sealing. Parapet and roof weather sealing applications.
    – Suitable as an expansion joint sealant.
    – Bedding and sealing of Insulated Glass units.

    CHARACTERISTICS / ADVANTAGES

    – Excellent tooling and slow skinning properties. Therefore, it is ideal for large scale construction and glazing applications.
    – Has excellent adhesion – adheres to most common surfaces. For instance, glass, metals, plastics and wood (painted or unpainted), uPVC and polycarbonate.
    – Excellent external weathering properties, therefore, can be guaranteed over many years worth of exposure.
    – High viscosity non-slump formula. In other words, it will hold it’s structure & body on even larger joints.
    – Resistant to fumed Hydrogen Peroxide and fumed Formaldehyde.

    APPLICATION INSTRUCTIONS

    PRIMER

    Dow Corning 791 does not require a primer on most common surfaces, although adhesion tests are recommended before full-scale application. However, if the joint is likely to be immersed or if adhesion is poor (especially on porous surfaces) use a Dow Corning Primer.

    SUBSTRATE PREPARATION

    Ensure that the desired application area is dry and clean, containing no grease or other contaminants. For instance, remove dust with compressed air or de-grease by using a solvent soaked pad, following by wiping with a clean cloth.

    LIMITATIONS

    – Not to be used with bitumen asphalt, neoprene and certain organic elastomers, please refer to the datasheet.
    – Can not be used in the manufacture of Aquariums.
    – Non-overpaintable.
    – Not recommended for use as a mirror adhesive.
    – Do not use on food grade applications
    – Do not use for in and around swimming pools. DC 791 is not suitable for swimming pool areas.
    – Can yellow if exposed to bleach or HCl based brick cleaners while curing.

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

  • EB25 Ultimate Sealant & Construction Adhesive – Box of 12

    £111.58

    Everbuild launched EB25 Ultimate Sealant and Adhesive in 2019 to celebrate their 25th year supplying cost-effective and reliable sealants.

    Covering a huge range of applications, sealant and adhesive areas, this versatile product is a suitable option for a variety of projects. It is a polymer blend sealant giving it additional flexibility and bonding strength you can rely on in any circumstance. Due to the technologies within the product, it can be used for both internal and external projects and is also durable in different weather and under-water environments.

    EB25is also certified for use in sanitary and food preparation areas and once cured is resistant to mould, temperature extremes, chemicals and more

    We provide EB25 by Everbuild in the full colour range, which includes: Black, White and Grey. Also, Crystal Clear that remains crystal clear and does not fog like similar products.

    Substrates that EB25 bonds to include:

    • Metal
    • Wood
    • Brick
    • Concrete
    • Stone
    • Ceramic
    • Tile
    • Plastic
    • Glass

    USES

    Bonding & sealing in almost every application imaginable, including, but not limited to:

    • External and internal pointing around doors and windows.
    • Bonding mirrors to most common substrates.
    • Sealing vertical expansion joints.
    • Jointing cladding panels.

    SUBSTRATE PREPARATION

    All surfaces must be clean and dust-free. Surfaces may be damp but have no standing water. Therefore, it can be used underwater, but adhesion performance is reduced so should be applied as an emergency repair in these conditions only.

    For all other Everbuild products on our website, please click here. For general sealing, please see our DIY section and select the area you require.

    For any further information you require on Everbuild products, please visit their website here. This product is Everbuild’s equivalent of the CT1 range and can be used like for like.


     

  • Everbuild 825 – Box of 25 – External Sealant

    £68.75

    Box Of 25

    Everbuild 825 is an LM (low modulus), odourless silicone with a neutral cure. Everbuild 825 adheres to a wide range of both porous and non-porous surfaces without the need for priming.

    USES

    – Perimeter pointing internally and externally around uPVC /wood and aluminium.
    – Sealing and as an adhesive onto uPVC, plastic trims and components.
    – Can be used to seal soft metals, for example, lead, copper and zinc.
    – Weather sealing and joint sealing to pre-formed panels and curtain walling, glazing sealing and draught-proofing.
    – Everbuild 825 can be used for glass to glass and glass to aluminium sealing. Parapet and roof weather sealing applications.
    – Suitable as an expansion joint sealant.
    – Bedding and sealing of Insulated Glass units.

    CHARACTERISTICS / ADVANTAGES

    – Slow skinning time gives excellent tooling properties. Therefore, it is ideal for large scale construction and glazing applications.
    – Has excellent adhesion – adheres to most common surfaces. For instance, glass, metals, plastics and wood (painted or unpainted), uPVC and polycarbonate.
    – External weathering properties offering guarantees for many years worth of exposure.
    – High viscosity non-slump formula. In other words, it will hold it’s structure & body on even larger joints.
    – Resistant to fumed Hydrogen Peroxide and fumed Formaldehyde.

    APPLICATION INSTRUCTIONS

    PRIMER

    Everbuild 825 does not require a primer on most common surfaces, although adhesion tests are recommended before full-scale application. However, if the joint is likely to be immersed or if adhesion is weak (especially on porous surfaces) use Everbuild P1 Primer. To improve adhesion (if required) to non-porous surfaces, prime with Everbuild NP2 Primer (advised for aluminium).

    SUBSTRATE PREPARATION

    Areas that require application must be clean and dust-free. For instance, remove dirt with compressed air or de-grease by using a solvent soaked pad, following by wiping with a clean cloth.

    LIMITATIONS

    – Not to be used in combination with bitumen asphalt, neoprene and specific organic elastomers, please check the technical datasheet.
    – Can not be used in the manufacture of Aquariums or any submerged areas.
    – Not to be used on substrates that bleed oil, solvents or plasticisers, please refer to the technical datasheet.
    – Non-overpaintable.
    – Not recommended for use as a mirror adhesive.
    – Not for food-grade applications – Use Silicone 565
    – Chance of yellowing if in contact with bleach or HCl based brick cleaners, while curing.

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

  • Ral-Colour-Sealant

    EVT Natural Stone HPM

    £65.00

    Elastic single-component silicone sealant for indoor and outdoor use in contact to marble and natural stone, with 25% maximum movement tolerance. Neutral curing

    2 Week Delivery Time.

    Special properties

    • elastic silicone-based sealant
    • no plasticizer migration on absorbent substrates
    • optimized tooling properties
    • low odour formulation
    • ageing and weather-resistant, good UV resistance
    • compatible with paints
    • good adhesion also on metals, compatible with copper
    • with fungicide

    Fields of application

    For sealing joints and connecting joints in contact with marble and natural stone.

    EVT Natural Stone HPM must not be used in aquarium construction, as mirror adhesive and in areas with direct food contact.

    In underwater applications, especially accurate tooling is necessary (preparation of substrate; often primer necessary). Underwater joints must be checked in suitable time intervals and have to be reworked if necessary.

    Not suited for plastics within general poor adhesion to silicones (eg PE, PP, PET).

    Usage instructions

    Substrate pretreatment

    The substrate must be dry, firm, and free of dust and grease (clean with isopropanol, if necessary). Porous substrates (e.g. concrete, plasterboard and untreated wood) must be primed. Before primer application, remove any cement slurry, mould release agents or impregnations. In renovation projects, old sealant remains of paint and loose material must be fully removed. On coated substrates (paints, lacquers), compatibility to the sealant must be tested.

    The joint must always be provided with a suitable, correctly dimensioned joint backing (e.g. PE cord, rock wool) to prevent adhesion on three faces. To avoid contamination and to achieve a precise joint, we recommend masking the joint edges with adhesive tape before primer application and filling – especially when working with marble / natural stone.

     

    Joint dimensions

    Joint dimensions should be at least 5 x 5 mm for indoor and 10 x 8 mm (width x depth) for outdoor applications. With increasing joint width (up to 30 mm), joint depth should be roughly half the joint width. Make sure that triangular bevels have uniform sides of equal length with at least 7 mm bonding surface on each side.

    Tooling

    After applying the sealant with a suitable manual, battery-powered or pneumatic caulking gun, the sealant can be smoothed in the joint with water or with a neutral, non-staining water- based smoothing agent and a suitable tool (e.g. jointing trowel). Smoothing is not only recommended for optical reasons, but also establishes close contact and good adhesion to the substrate. Remove excess smoothing agent (risk of schlieren). Any adhesive tape used should be removed immediately after smoothing. We recommend the FS caulking gun and FS jointing trowel.

     

    Important remarks

    The function of the sealant can only be guaranteed if correctly applied in accordance with the technical recommendations given in this data sheet and in related standards. Sealant application in situations with strongly fluctuating temperatures (premature stressing of the sealant) must be avoided.

    The sealant is compatible with many paints and lacquers. Owing to a large number of different coating systems on the market, own tests concerning adhesion and compatibility have to be performed prior to application. For example, it is known that alkyd resin-based paints may give discolouration in combination with neutral curing silicones. The sealant is not overpaintable,

    Especially on powder-coated substrates, adhesion has to be tested carefully, since it can be affected negatively depending on the coating used (may even vary for different colours of the same brand of powder coating).

    In contact with bituminous, tar- or plasticizer-releasing substrates (eg EPDM, neoprene, butyl), discolouration and/or loss of adhesion may occur.

    Good ventilation must be provided during application and curing to allow curing by-products to evaporate. Low temperatures, low humidities and joint depths above 15 mm can retard skin formation and cure significantly.

    Exposure to liquid (eg acid-based cleaning agents, strongly coloured liquids) or gaseous chemicals (eg. tobacco smoke) for longer periods can result in discolouration of the product, especially for light colours (white). In general, the mechanical properties of the sealant are not adversely affected.

    Products with fungicide give additional protection against the mould to the joint. But, they can not supersede good housekeeping: It’s essential to keep the joint clean, dry and free from substances, that may serve as nutrition medium (eg soap residues, skin scales).

  • Ral-Colour-Sealant

    EVT Prime – Ral Colour Sealant

    £65.00

    RAL Colours:

    EVT Prime Colours are stocked on the list below. If you would like a specific RAL colour not listed on the items below, please contact us and we can advise lead time and cost. RAL colours listed are a non-stock item and delivery time is anything from next day to 2 weeks, to 6 weeks, depending on the stock from manufacture.

    Areas of application

    EVT Prime Colours may be used for sealing construction joints on most surfaces. Suitable for perimeter sealing of uPVC window frames, conservatories, coated wood, aluminium, metal, concrete, plaster and sanitary applications. For interior and exterior use.

    Properties

    EVT Prime Colours cures upon reaction with moisture, remains permanently elastic, is non-ageing, contains a biocide, is durable and non-paintable. An application test is recommended before use. Do not use on natural stone. Use EVT Natural Stone HPM for marble and natural stone applications.

    Application

    Apply with a hand-operated, battery-operated or air pressure dispensing gun; then smooth the joint surface with the use of a trowel or your finger and Surface Finishing Agent.

    RAL Colours:

    1013 – Oyster White

    1015 – Anemone

    1019 – Grey Beige

    2002 – Blood Red

    3002 – Carmine Red

    3011 – Brown Red

    4008 – Signal Violet

    5000 – Violet Blue

    5001 – Green Blue

    5003 – Sapphire Blue

    5011 – Steel Blue

    5014 – Pigeon Blue

    6003 – Olive Blue

    6005 – Moss Green

    6007 – Bottle Green

    6009 – Fir Green

    6012 – Black Green

    6015 – Black Olive

    6019 – Pastel Green

    6020 – Chrome Green

    6021 – Pale Green

    6028 – Pine Green

    6033 – Mint Turquoise

    7000 – Squirrel Grey

    7001 – Silver Grey

    7002 – Olive Green

    7003 – Moss Green

    7004 –  Signal Grey

    7005 – Mouse Grey

    7006 – Beige Grey

    7010 – Tarpaulin Grey

    7011 – Iron Grey

    7012 – Basalt Grey

    7015 – Slate Grey

    7016 – Anthracite Grey

    7021 – Black Grey

    7022 – Umbra Grey

    7024 – Concrete Grey

    7030 – Stone Grey

    7032 – Pebble Grey

    7033 – Cement Grey

    7034 – Yellow Grey

    7035 – Light Grey

    7036 – Platinum Grey

    7037 – Dusty Grey

    7038 – Agate Grey

    7039 – Quartz Grey

    7040 – Window Grey

    7042 – Traffic Grey A

    7043 – Traffic Grey B

    7044 – Silk Grey B

    7045 – Tele Grey 1

    7046 – Tele Grey 2

    7047 – Tele Grey 4

    8002 – Signal Brown

    8004 – Cooper Brown

    8014 – Sepia Brown

    8016 – Mahogany Brown

    8019 – Grey Brown

    9001 – Cream

    9002 – Grey White

    9003 – Signal White

    9006 – White Aluminium

    9007 – Grey Aluminium

    9010 – Pure White

    9016 – Traffic White

  • Foam Strip 12mm x 12mm x 100m

    £13.50

    Sealant Polyethylene Backer Strip 12mm x 12mm x 100m

    Non-absorbent compressible white closed cell polyethene foam backup material. Insert into a joint to control sealant depth & create a backstop. Strip of 100m of 12mm x 12mm square polyethene foam joint filler and backing for sealants and acoustic applications. Compatible with all know types of sealants to control the depth of the sealant in proper relation to joint width. Provides backing against which the sealant is applied, forcing the sealant to the sides of the joint for adhesion.

    Choosing the correct size:

    Select a backer strip width that is approximately between 15 and 25% larger than the width of the joint to give a firm base. The backer strip can be compressed down into gaps slightly tighter than its width.

    Applications:

    • General Purpose Sealant backing
    • Together with Self-leveling sealant
    • Expansion Joints
    • Irregular joints
    • Metal and pre-cast panels
    • Around perimeters of door and window frames
    • Coping and glazing joints
    • Log Cabins / Homes
    • Draft Proofing & Acoustic Work

    Also, we provide the backer foam in rods or rolls in all sizes, 13mm and 10mm backer rod equivalent. Fire protective backer foam is also available here.

  • Foam Strip 15mm x 12mm x 100m

    £16.99

    Sealant Polyethylene Backer Strip 15mm x 12mm x 100m

    Non-absorbent compressible white closed cell polyethene foam backup material. Insert into a joint to control sealant depth & create a backstop. Strip of 100m of 12mm x 12mm square polyethene foam joint filler and backing for sealants and acoustic applications. Compatible with all know types of sealants to control the depth of the sealant in proper relation to joint width. Provides backing against which the sealant is applied, forcing the sealant to the sides of the joint for adhesion.

    Choosing the correct size:

    Select a backer strip width that is approximately between 15 and 25% larger than the width of the joint to give a firm base. The backer strip can be compressed down into gaps slightly tighter than its width.

    Applications:

    • General Purpose Sealant backing
    • Together with Self-leveling sealant
    • Expansion Joints
    • Irregular joints
    • Metal and pre-cast panels
    • Around perimeters of door and window frames
    • Coping and glazing joints
    • Log Cabins / Homes
    • Draft Proofing & Acoustic Work

    Also, we provide the backer foam in rods or rolls in all sizes, please click here for the 15mm backer rod equivalent. Fire protective backer foam is also available here.

  • Foam Strip 20mm x 12mm x 100m

    £17.00

    Sealant Polyethylene Backer Strip 20mm x 12mm x 100m

    Non-absorbent compressible white closed cell polyethene foam backup material. Insert into a joint to control sealant depth & create a backstop. Strip of 100m of 12mm x 12mm square polyethene foam joint filler and backing for sealants and acoustic applications. Compatible with all know types of sealants to control the depth of the sealant in proper relation to joint width. Provides backing against which the sealant is applied, forcing the sealant to the sides of the joint for adhesion.

    Choosing the correct size:

    Select a backer strip width that is approximately between 15 and 25% larger than the width of the joint to give a firm base. The backer strip can be compressed down into gaps slightly tighter than its width.

    Applications:

    • General Purpose Sealant backing
    • Together with Self-leveling sealant
    • Expansion Joints
    • Irregular joints
    • Metal and pre-cast panels
    • Around perimeters of door and window frames
    • Coping and glazing joints
    • Log Cabins / Homes
    • Draft Proofing & Acoustic Work

    Also, we provide the backer foam in rods or rolls in all sizes, please click here for the 20mm backer rod equivalent. Fire protective backer foam is also available here.

  • Foam Strip 25mm x 12mm x 100m

    £21.50

    Sealant Polyethylene Backer Strip 25mm x 12mm x 100m

    Non-absorbent compressible white closed cell polyethene foam backup material. Insert into a joint to control sealant depth & create a backstop. Strip of 100m of 12mm x 12mm square polyethene foam joint filler and backing for sealants and acoustic applications. Compatible with all know types of sealants to control the depth of the sealant in proper relation to joint width. Provides backing against which the sealant is applied, forcing the sealant to the sides of the joint for adhesion.

    Choosing the correct size:

    Select a backer strip width that is approximately between 15 and 25% larger than the width of the joint to give a firm base. The backer strip can be compressed down into gaps slightly tighter than its width.

    Applications:

    • General Purpose Sealant backing
    • Together with Self-leveling sealant
    • Expansion Joints
    • Irregular joints
    • Metal and pre-cast panels
    • Around perimeters of door and window frames
    • Coping and glazing joints
    • Log Cabins / Homes
    • Draft Proofing & Acoustic Work

    Also, we provide the backer foam in rods or rolls in all sizes, please click here for the 25mm backer rod equivalent. Fire protective backer foam is also available here.

  • Foam Strip 30mm x 12mm x 100m

    £26.50

    Sealant Polyethylene Backer Strip 30mm x 12mm x 100m

    Non-absorbent compressible white closed cell polyethene foam backup material. Insert into a joint to control sealant depth & create a backstop. Strip of 100m of 12mm x 12mm square polyethene foam joint filler and backing for sealants and acoustic applications. Compatible with all know types of sealants to control the depth of the sealant in proper relation to joint width. Provides backing against which the sealant is applied, forcing the sealant to the sides of the joint for adhesion.

    Choosing the correct size:

    Select a backer strip width that is approximately between 15 and 25% larger than the width of the joint to give a firm base. The backer strip can be compressed down into gaps slightly tighter than its width.

    Applications:

    • General Purpose Sealant backing
    • Together with Self-leveling sealant
    • Expansion Joints
    • Irregular joints
    • Metal and pre-cast panels
    • Around perimeters of door and window frames
    • Coping and glazing joints
    • Log Cabins / Homes
    • Draft Proofing & Acoustic Work

    Also, we provide the backer foam in rods or rolls in all sizes, please click here for the 30mm backer rod equivalent. Fire protective backer foam is also available here.

Expansion Joints Sealants

High quality expansion joint sealants with reliable delivery times and discounts available on bulk orders. At Sealant Supplies we stock a range of sealants and adhesives which are suitable for use in a range of environments, including construction projects.

We supply to large companies who require ongoing deliveries of sealants for their projects, therefore you can feel confident when purchasing from us. We also provide the option to create a trade or credit account to gain access to exclusive deals and offers on expansion joints sealants.

Whatever your requirements, our team are here to assist you. We also regularly review our stocklists to ensure we are providing the best quality sealants and adhesives to our customers. If there is a particular product you are looking for, do not hesitate to get in touch with our team and we can source this for you at a reasonable price.

To find out more about the sealants we provide for expansion joints, simply reach out to our team. We provide a huge range of sealants and adhesives, therefore have something for every project. To speak with a member of our team simply call 01708 525 866 or email info@sealantsupplies.co.uk and we will be in touch as soon as possible.