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Arbokol 2150 - Two-Part Polysulphide Sealant for Roofing and Water-Retaining Structures

Abokol 2150 is a two-part polysulphide sealant with very high polymer content that cures to a hard-wearing but flexible seal. Designed for flat roof joints, heavily trafficked floor joints, concrete slab constructions, water-retaining structures, and joints requiring chemical resistance and bio-degradation resistance, it provides a 20+ year service life and complies with BS EN ISO 11600 F-25HM.

Specify ARBOKOL 2150

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Unique properties of ARBOKOL 2150

ARBOKOL 2150 delivers the durability, chemical resistance, and bio-degradation resistance required for flat roofs, trafficked floors, and water-retaining structures.

  • Very high polymer content — enhanced durability and chemical resistance

  • Hard-wearing but flexible seal — withstands traffic loading on roofs and floors

  • Resistant to bio-degradation — specified for sewerage structures and non-drinking water applications

  • Excellent chemical resistance including petrol, diesel, jet fuel, and vegetable oils

  • Good adhesion to concrete, stone, and metals — minimal or no primer on most substrates

  • 20+ year service life — meets BS EN ISO 11600 F-25HM and BS EN 15651-1

Technical Specifications & Downloads

DescribtionPerformance
Colours:
Black, Grey
Work Life at 20º C/65 % RH:1 - 1½ hours
Application Temperature:+ 5º C to + 40º C
Service Temperature:- 50º C to + 80º C
Typical Shore Hardness:50
Cure Rate at 20ºC/65 % RH:7 days at 20ºC in a typical joint. At lower temperatures cure rate will be slower.
Chemical Resistance:Resistant to most dilute acids and alkalis, petrol, diesel, jet fuel and many solvents and vegetable oils.
UV Resistance:Very Good
Service Life:20 years + (when used in trafficked areas, sewerage works and other special environments, service life may be reduced).
Movement Accommodation:Butt joints (movement in tension and compression): 20 %.
Lap Joints (movement in shear): 40 %

Associated Products

AG2 Porous Primer

A one-part solvent-based primer for porous surfaces such as concrete, for use with Arbokol AG2 and Arbokol 2150 polysulphide sealants.

Arbokol AG2 Gun Grade - ARBOSEAL Pro®

A two-part polysulphide sealant in gun grade consistency for vertical and overhead joints.

Arbothane 1245SL - ARBOSEAL Pro®

A one-part polyurethane sealant with self-levelling properties for horizontal movement joints.

Arbokol 1025 SP - ARBOSEAL Pro®

A two-part polysulphide sealant for movement joints in below-ground and water-retaining structures.

ARBO® Cleaner 17

Xylene-based cleaner for the effective cleaning and degreasing of construction substrates prior to sealant application.

Frequently Asked Questions

1

Why choose ARBOSEAL PRO® ARBOKOL 2150 for water-retaining and trafficked floor applications?
ARBOKOL 2150 is formulated with a very high polymer content to deliver exceptional durability in the most demanding civil engineering environments. Its bio-degradation resistance makes it suitable for sewerage structures and other environments where standard sealants would be degraded by biological activity. Its Shore A hardness of 50 combined with 20% butt joint movement accommodation provides the balance of hardness and flexibility required for trafficked flat roof and floor joints

2

What are the key benefits of ARBOSEAL PRO® ARBOKOL 2150?
ARBOKOL 2150 offers a combination of hard-wearing performance and long-term durability through its very high polymer polysulphide chemistry. With a 20+ year service life, compliance with BS EN ISO 11600 F-25HM and EN 15651-1 Class 20HM, and excellent resistance to petrol, diesel, jet fuel, and common solvents, it meets the requirements of the most demanding civil, industrial, and roofing specifications. Supplied as a 2 litre two-part pack, it is applied using ARBO Barrel Guns.

3

What is the ARBOSEAL Pro® range?
The ARBOSEAL Pro® range is a comprehensive portfolio of professional-grade sealants manufactured by Adshead Ratcliffe under the ARBO® brand. The range covers silicone, modified polymer, polyurethane, polysulphide, epoxy, acrylic, butyl, and oil-based sealant technologies, providing a complete solution for sealing, bonding, and jointing across all types of construction projects — from glazing and cladding to flooring, facades, and secure environments.
 

4

Which ARBOSEAL Pro® sealant is right for my application?
Product selection depends on the substrate type, joint movement, environmental exposure, and performance requirements. Neutral cure silicones (e.g. Arbosil LMS, Arbosil 1096 S) suit glazing and perimeter sealing. High-modulus options (e.g. Arbomeric MP20) handle structural joints. Polysulphides (e.g. Arbokol AG2, Arbokol 2150) provide chemical resistance for floors, roofs, and water-retaining structures. Epoxy sealants (e.g. Arbokol SECURE, Arbokol 1025 SP) deliver hard-wearing seals for secure environments and pool applications. Contact ARBO® Technical Services for specific guidance.
 

5

What surface preparation is required before applying an ARBOSEAL Pro® sealant?
All joint faces must be clean, dry, and free from dust, oil, grease, loose material, and previous sealant residues. For porous substrates such as concrete and brickwork, the application of an ARBO® primer is recommended to maximise adhesion. Always consult the product-specific Technical Data Sheet (TDS) for primer and cleaner recommendations. Application should be carried out in accordance with BS 8000-16:1997 + A1:2010.
 
 

6

Where can I find technical documentation for ARBOSEAL Pro® products?
Technical Data Sheets (TDS), Safety Data Sheets (SDS), and Declarations of Performance (DoP) for all ARBOSEAL Pro® products are available for download on each individual product page at arbo.co.uk. The full ARBO® Product Catalogue is also available for download. For further technical support or specification advice, contact ARBO® Technical Services directly.

Explore the ARBO® Product Family

Sealants

Sealants for reliable movement joint, perimeter and weatherproof sealing in a wide range of applications.

Weather Protection

Effective weather sealing solutions for interface applications, penetration sealing and structural joints.

Adhesives

Bonding solutions for secure and durable adhesion across façade and construction substrates.

Accessories

Caulking Guns, Nozzles, Knives, Scrapers, G Clamps etc.

Find your contacts

Regardless of whether you are an architect and planner, property developer, industry specialist, distributor, applicator or specifier – if you have any questions about our products, services or specific construction projects, please feel free to contact the CARLISLE® contact person in your area with your technical questions. Our experts will be happy to advise you.

Here's how to do it: Simply enter your postcode in the search field of the map

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Main Applications

ARBOSEAL PRO® ARBOKOL 2150 is the specified choice for flat roof joints, trafficked floors, concrete slab constructions, and water-retaining or sewerage structures.

Flat Roof Joints

Sealing expansion and movement joints in flat roof constructions subject to traffic and weathering.

Trafficked Floor Joints

Hard-wearing sealing of heavily trafficked floor joints in industrial and civil engineering applications.

Water-Retaining Structures

Sealing joints in water-retaining (non-drinking) and sewerage structures requiring bio-degradation resistance.

Concrete Slab Construction

Sealing joints in water-retaining (non-drinking) and sewerage structures requiring bio-degradation resistance.

ARBO AG2 Porous Primer
Read more
ARBOKol AG2 Gun Grade - ARBOSeal Pro®
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ARBOThane 1245SL - ARBOSeal Pro®
Read more
ARBOKol 1025 SP - ARBOSeal Pro®
Read more
ARBO Cleaner 17
Read more
ARBOSEAL Pro Range
Discover ARBOSEAL Pro®
Accessories
Discover ARBOPROTECT Pro®
Arbobond Pro
Discover ARBOBOND Pro®
Accessories
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