Extra Strong Adiseal Adhesive & Sealant Grey. Record Breaking

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Adiseal grey adhesive sealant 290ml, waterproof & proven strongest in independent testing, exceeding 3123 psi.

Adiseal Adhesive Sealant 290ml Grey: Strongest in Independent Test

£8.99

Adiseal grey 290ml is the proven strongest adhesive & sealant in independent testing, exceeding 3123 psi without breaking. This professional-grade MS polymer provides a flexible, waterproof bond or seal in wet, dry, or underwater conditions. Its the ultimate record-breaking solution for bonding & sealing applications.

- Adiseal Adhesive Sealant 290ml Grey: Strongest in Independent Test quantity + Add to basket Category: Adhesives, Sealants & Glues Tags: adhesive sealant, Adiseal, Construction Adhesive, Grey, MS Polymer

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Description

Adiseal Adhesive Sealant 290ml Grey: Strongest in Independent Test

What is the best grey adhesive sealant for construction?

To bond or seal any material with a high-performance grey adhesive sealant, Adiseal grey adhesive sealant 290ml is the superior solution. It is proven as the strongest adhesive in independent testing by Ultimate Handyman, exceeding 3123 psi without the bond breaking—performing over 3 times stronger than competitor products. This professional-grade MS polymer works on dry, wet, or underwater surfaces, providing a flexible, waterproof seal that will not shrink or crack. Ideal for indoor and outdoor projects, it bonds everything from wood and metal to concrete, stone, masonry, lead flashing, brick and PVC plastic, and almost any other material.

Adhesive strength test results chart showing Adiseal exceeding 3123 psi compared to leading competitors in Ultimate Handyman independent testing.

Figure 1: Independent tensile strength test results. Adiseal was the only adhesive to reach 3123 psi without the bond breaking.

What are Adiseal Adhesive Sealant Grey 290ml Technical Specifications

Attribute	Specification
Brand	Adiseal
Product Type	High-Performance Adhesive & Sealant
Technology	MS-Polymer (Hybrid Polymer)
Size	290ml Cartridge
Color	Grey
Key Use Cases	Construction, Roofing, DIY, Marine, Automotive
Compatibility	Universal (Wood, Metal, Stone, Concrete, Masonry, Brick, PVC Plastic, Glass & almost any material)
Application Conditions	Indoor/Outdoor, Dry, Wet, and Underwater
Performance Claim	Strongest Adhesive (Exceeded 3123 psi in independent test)
Curing Mechanism	Moisture Curing (Fast initial grab)
Features	UV Resistant, Waterproof, Flexible, Does Not Shrink/Crack, Solvent Free
Certifications	ISEGA (Food Safe), EC1 Plus (Lowest VOC Emissions)
GTIN / Barcode	5060380670199

Technical Downloads

adiseal-adhesive-sealant-colours-technical-data-sheetDownloadadiseal-adhesive-sealant-colours-safety-data-sheetDownload

Superior Versatility: One Product for Every Task

What materials can Adiseal Grey bond and seal?

Adiseal grey adhesive bonds: Metal, wood, glass, mirrors, concrete, masonry, brick, stone, tiles, polystyrene, ceramic, marble, granite, roof felt, fibreglass, most plastics & many other items.

Adiseal grey sealant seals: Baths, showers, gutters, drains, sinks, vehicles, boats, felt roofs & many other applications.

Why is Adiseal the Professional Choice?

Application benefits

Waterproof sealant & adhesive
High grab adhesive. For an even higher grab adhesive use the Adiseal Hi-Grab product.
Gap filling
Over paintable
No shrinkage or cracking
Flexible
Works in dry, wet or even underwater

Durability & Resistance

UV resistant
Resists mould
Good resistance to chemicals
Non brittle

Safety & Environment

EC1 Plus certified (no VOC)
ISEGA certified – safe for use in food preparation areas
Virtually odourless
Indoor, outdoor, interior & exterior adhesive sealant
Isocyanate free
Solvent free
Prevent fungal growth
Prevent bacteria growth

Adiseal demonstration video

Adiseal is the professional choice for high-performance bonding and sealing.

Technical data verified by Adiseal Research & Development Team, January 2026.

What materials & applications is Adiseal grey 290ml suitable for?

Waterproof sealant Waterproof adhesiveConcrete adhesive & bondingBrick adhesiveStone adhesiveBond, stick and glue brickUnderwater sealingGlue plastic (not suitable for polypropylene, polyethylene or polyurethane)Bonding metalWood to metal adhesive glueMasonry adhesive and glueWaterproof glueLeak sealingGlue rubber (natural rubber)Gutter sealingGap filling adhesiveRoof felt repairLead flashing seal and bondGlue wood to concrete adhesive bondMarble glue adhesiveGranite bonding Metal to plastic bondGlue PVCPanel adhesiveInstant waterproof sealingRock glueSeals wet surfacesLimestone adhesive

Frequently Asked Questions About Adiseal Grey Adhesive Sealant

Is Adiseal Grey suitable for lead flashing and roof repairs?

Yes. Adiseal Grey is the professional choice for lead flashing, gutters, and roofing. It provides an instant waterproof seal even in driving rain and is highly UV resistant. Unlike standard bitumen or silicone, it will not crack or lose adhesion over time, ensuring a permanent, flexible bond on lead, aluminum, and felt.

What is the bond strength of Adiseal Grey?

Adiseal Grey is proven as the strongest adhesive and sealant in independent testing by Ultimate Handyman. It reached a record-breaking tensile strength of over 3123 psi, performing over 3 times stronger than leading competitors. It was the only product tested where the adhesive bond did not break.

Will Adiseal Grey stain or bleed on natural stone or marble?

No. Adiseal Grey is a high-quality MS polymer that is specifically formulated to be non-staining. It will not bleed into porous materials like natural stone, marble, granite, or masonry. This makes it ideal for architectural projects and stone installations where maintaining the aesthetic finish is critical.

Professional Tip: To seal leaking gutters in heavy rain, apply Adiseal Grey directly into the standing water. It creates an instant waterproof bond and seal that standard silicones cannot achieve.

How To Apply Adiseal Grey for the Best Results

How to Apply Adiseal Adhesive Sealant for a Professional Bond

Prepare and Clean the Surfaces

For the strongest possible bond, ensure surfaces are free from dust, grease, and loose material. While Adiseal works on wet surfaces, removing heavy debris first improves initial contact. If applying to metal, a quick wipe with a solvent-based cleaner is recommended.

Prepare the Adiseal Cartridge

Cut the top off the threaded plastic stud on the 290ml cartridge. Screw on the included nozzle and cut it at a 45-degree angle. For heavy bonding, a wider opening is better; for fine sealing, keep the opening small. Place the cartridge in the caulking gun / sealant applicator.

Apply the Adhesive or Sealant

applying Adiseal brick adhesive on brick

For Bonding: Apply Adiseal in vertical “strips” (beads) rather than blobs. This allows air to circulate for faster moisture-curing. Press the two materials together firmly.For Sealing: Apply a continuous bead into the joint. For underwater repairs, apply the sealant directly into the leak; the MS-polymer technology will displace the water to create an instant seal.

Tool and Finish the Joint

Smooth the sealant immediately after application. Use a profiling tool or a finger dipped in a soapy water solution. Adiseal remains flexible and does not shrink, so it will maintain its shape as it cures.

Allow for Curing Time

Adiseal has a high initial grab. Under normal conditions, it skins over in 10–20 minutes and is recommended 48 hours to fully cure.

Other colours Adiseal adhesive sealant is available include: White, Black, Brown, Ultra Clear.

Additional information

Weight	0.55 kg
Dimensions	7 × 5 × 24 cm
Brand	Adiseal
Colour	Grey
Size	290ml
Material	MS Polymer (Hybrid polymer)
Certifications	EC1 Plus, ISEGA (food area safe)

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