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Waterproofing Adhesives

Specialist Waterproofing Adhesives are essential for securing membranes, tapes, and reinforcement materials in place as part of larger protective systems. Used across domestic, commercial, and industrial applications, these products ensure components bond securely even in wet or challenging environments. Whether sealing gaps, bonding sheet materials, or providing long-term surface protection, waterproofing adhesives contribute to complete water ingress prevention. Suitable for use alongside coatings, fleeces, and detailing accessories, they offer versatile application on roofs, walls, and structural joints.

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Eagle Ultraflex Sealant | Waterproof Adhesive

Eagle Ultraflex Sealant

Eagle Ultraflex Sealant is a one component elastic adhesive polymer trim adhesive and gap filler, specially formulated to be used in conjunction with the Eagle Ultraflex Liquid Waterproofing System. Used to fix Eagle Trims, Corners and other roofing elements High initial tack  Fast cure (full strength in approximately 20 minutes, fully...

Price £139.27 (incl. VAT)
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Illbruck PU230

Illbruck PU230 Rapid Adhesive

PU adhesive paste for wood which cures rapidly to form an exceptionally strong water resistant bond. It is ideal for use in all types of joinery, construction and repair applications where a permanent bond is required. Waterproof adhesive suitable for external use - meets the requirements of EN 204 (D4) Forms an exceptionally high bond...

Price £7.96 (incl. VAT)
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Sikalastic 827 LT

Sikalastic 827 LT

Sikalastic 827 HT is a modified hot-melt adhesive with defined volume increase and chemical bond activated by the hot asphalt used as part of the bridge deck waterproofing system underneath mastic asphalt and asphalt concrete. Features and Benefits Allows bonding between waterproofing membrane Sikalastic 821 LV, Sikalastic 841 ST,...

Price £458.08 (incl. VAT)
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Sika Cavity Drainage System Accessories

Sika Cavity Drainage System Accessories

The Sika Cavity Drainage System utilises a high density polypropylene internal drainage membrane, the system is installed loose laid in flooring applications and attached to the wall with surface plugs in vertical installations.  Other associated products include; Sika Standard Drainage Membrane Sika Plaster Drainage Membrane Sika HD20...

Price £75.16 (incl. VAT)
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SikaProof ExTape 150

SikaProof ExTape 150

SikaProof ExTape 150 is a self-adhesive tape, consisting of a butyl rubber adhesive that is covered with a divided release liner. It is used to adhere and seal joints and overlaps of the SikaProof A sheet membrane system, as well as to execute details and connections where required on the membrane layer side of the system. Features &...

Price £217.87 (incl. VAT)
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SikaProof FixTape 50

SikaProof FixTape 50

SikaProof FixTape 50 is a double-sided adhesive tape, consisting of a butyl rubber adhesive that is covered with a release liner. FixTape 50 is used for different detailing application of the SikaProof A system.  Features & Benefits High adhesion of the butyl rubber adhesive High durability Easy and fast to install More...

Price £98.06 (incl. VAT)
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Sika BentoShield SS50 Bonding Tape

Sika BentoShield SS50 Bonding Tape

Sika BentoShield SS50 Bonding Tape is a single-sided adhesive tape, consists of a butyl rubber adhesive that is covered with a release liner. Used for sealing laps on the Sika BentoShield MAX LM System.  Features and Benefits High adhesion of the butyl rubber adhesive High durability Easy and fast to install More Information Delivery...

Price £20.96 (incl. VAT)
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Fosroc Supercast SWX |  Elastomeric Water-Swellable Gun Applied Paste

Fosroc Supercast SWX

Fosroc Supercast SWX is a grey, elastomeric water-swellable gun applied paste that can be used as a swellable adhesive to adhere Supercast SW waterstop to concrete. It has the capability to fill undulations and surface holes in the concrete beneath the waterstop and swell into these when required. The Supercast SW range consists of...

Price £95.27 (incl. VAT)
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Mapei Idrostop Mastic

Mapei Idrostop Mastic

Idrostop Mastic is a one-component thixotropic adhesive made from sililated polymers characterised by its high initial tack and rapid final hardening, used to bond Idrostop when making waterproof work joints in the civil, industrial and hydraulic construction sectors. Suitable for: Bonding Idrostop to concrete between foundation slabs and...

Price £151.92 (incl. VAT)
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Mapei Mapeproof Fix Tape

Mapei Mapeproof Fix Tape

Mapei Mapeproof Fix Tape is a double-sided adhesive tape to hold sheets of Mapeproof FTB in place during installation. Adheres perfectly to various types of substrate One of the accessory items used in the Mapeproof FBT waterproofing system. For professional use only. More Information Delivery Info

Price £147.02 (incl. VAT)
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Visqueen Zedex Mastic | Damp Proof Course

Visqueen Zedex Mastic

White, flame retardant, flexible sealant supplied in 380ml cartridges, used for the following: Sealing lap joints of Visqueen Zedex Non-Combustible Damp Proof Course cavity trays Sealing lap joints of Visqueen Zedex Non-Combustible Damp Proof Course cavity trays to Visqueen Non-Combustible Preformed Units Sealing Visqueen Zedex...

Price £618.72 (incl. VAT)
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Visqueen Waterstop Adhesive | High Performance

Visqueen Waterstop Adhesive

Used to bond Visqueen IGW5 Waterstop, Visqueen IGW10 Waterstop and Visqueen VX25 Waterstop to horizontal and vertical construction joints and day-joints in poured in-situ above or below ground concrete structures of at least 250mm width e.g. retaining walls. Cartridge format - convenient and easy to apply High performance - provides...

Price £21.96 (incl. VAT)
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Waterproofing Adhesives for Roofs, Membranes and Joints


Waterproofing adhesives are used in conjunction with specialist systems. They help seal and stabilise materials exposed to moisture, weather and movement. These adhesives are often applied as part of larger systems including primers, membranes, and GRP roofing products, ensuring cohesive and watertight coverage across vulnerable areas. Many can be applied on damp substrates or during temporary patching, depending on the specification.

When water ingress becomes urgent - such as during leaks or storm damage - waterproofing adhesives can also support emergency roof repairs using fast-acting paints, patches or sealants. Applied under or over repair fabrics or tapes, these adhesives assist with quick reinstatement and long-term performance. From sealing gutters and outlets to detailing around pipes and edges, they play a key role in holding reinforcement in place, preventing delamination and improving system lifespan under constant exposure.

Waterproofing Adhesives FAQs


Can waterproofing adhesives be applied to damp surfaces?

Some waterproofing adhesives are designed to bond to damp or wet substrates, particularly in emergency or temporary repair applications. Always check the product’s data sheet before use.

Are these adhesives compatible with all membranes and tapes?

Not all adhesives will suit every membrane or reinforcement. It’s vital to match the adhesive type to the system being used - technical support is recommended.

Can these adhesives be used for vertical applications?

Certain waterproofing adhesives are thixotropic or reinforced to resist slump, making them suitable for walls, parapets and other vertical surfaces.

Do these adhesives offer UV resistance?

Some waterproofing adhesives provide limited UV resistance, but they are usually intended for covered use under membranes or coatings. Check product limitations before exposed use.