When specifying construction sealants, choosing the right product is critical for long-term durability and compliance. The ARBO range covers everything from high-movement silicones to polyurethane joint sealants and traditional oil-based compounds.
In this guide to ARBO sealants UK, we explain the differences between Arbo MP20, Arbo HM, Arbomast GP, Arbothane 1245, Arbo Membrane Adhesive and Arbosil 1096 — so you can select the correct product for your project.
If you’re sourcing professional-grade sealants for glazing, façades, concrete joints or timber frames, this breakdown will help you buy with confidence.
Arbo MP20 – High Movement Silicone Sealant
Best for expansion joints & façade movement
Arbo MP20 is a premium neutral cure silicone sealant designed for high movement joints. With movement capability up to ±50%, it is ideal for structural glazing, curtain walling and large expansion joints where flexibility is essential.
Key Benefits:
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High movement capability (±50%)
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Excellent UV and weather resistance
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Non-corrosive neutral cure system
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Long service life in external environments
MP20 is commonly specified in commercial façades and external envelope applications where performance and compliance matter. For projects requiring resistance to environmental exposure, it is one of the most dependable options within the ARBO sealants UK portfolio. If your application requires both bonding and sealing, see our strongest glue for metal to plastic guide for high-performance adhesive options.
Arbo HM – Hybrid Polymer Sealant
Best for overpaintable construction sealing
Arbo HM is a hybrid polymer sealant combining the flexibility of silicone with the paintability of polyurethane. It provides strong adhesion to a wide range of substrates without primer in many cases.
Ideal For:
- Internal and external perimeter sealing
- Bonding and sealing in one product
- Projects requiring overpainting
- Expansion joints and movement joints
- Sealing around windows, doors and façades
- General construction and fit-out applications
- Multi-material bonding (metal, glass, wood, masonry, plastics*)
👉 For a comparison of similar systems, see our hybrid polymer vs PU vs silicone guide.
Why Use Arbo HM?
- Excellent flexibility with good movement capability
- Strong adhesion to common construction substrates
- Paintable once cured (unlike silicone)
- Good UV and weather resistance
- Suitable for indoor and outdoor use
- One-part system — no mixing required
👉 If you need a balance of ease of use, flexibility and durability, hybrid sealants like Arbo HM are often the best all-round choice.
Unlike traditional silicones, Arbo HM can be painted once cured, making it a popular choice for visible joints in commercial and residential construction. For more information as to whether a hybrid sealant is for you please read our guide Hybrid Polymer Adhesive vs PU vs Silicone – What’s the Difference?
What Arbo HM Is NOT Good For:
Arbo HM is not designed for every application, and using it in the wrong scenario can lead to failure.
Avoid using Arbo HM for:
- Heavy structural bonding
👉 Use MMA systems instead - High load-bearing metal-to-metal applications
👉 Consider structural adhesives — see our structural adhesives UK guide - Low surface energy plastics (PP, PE)
👉 These materials require specialist adhesives such as acrylic systems or Permabond TA4611 - Continuous water immersion (e.g. submerged joints)
👉 Not designed for permanent underwater exposure - Applications requiring very high rigidity
👉 Hybrid sealants remain flexible, not rigid like epoxy
ARBOBOND Pro Universal Adhesive – Hybrid Polymer Grab Adhesive
ARBOBOND Pro® Universal Adhesive is a high-performance hybrid polymer adhesive designed for strong, flexible bonding across a wide range of construction materials. Unlike traditional solvent-based grab adhesives, it is solvent-free, low odour, and suitable for use on both porous and non-porous surfaces.
This type of adhesive is commonly used where both bonding strength and flexibility are required, particularly in construction, fabrication, and general building work.
Key features:
Strong initial grab for vertical applications
Flexible bond that resists vibration and movement
Suitable for metal, brick, concrete, wood, PVC and most building materials
Can be applied to slightly damp surfaces
Good weather and moisture resistance
Interior and exterior use
Because it remains flexible after curing, ARBOBOND Pro is ideal where movement, expansion, or vibration could cause rigid adhesives to fail.
Typical uses:
Bonding metal trims and panels
Fixing skirting, boards and cladding
General construction bonding
Sealing and bonding in one application
Exterior joints exposed to weather
Buy here:
ARBOBOND Pro Universal Adhesive 290ml – Hybrid Polymer Grab Adhesive
https://www.adsupply.co.uk/product/arbobond-pro-universal-adhesive-290ml/
Arbomast GP – Traditional Oil-Based Sealant
Best for timber frames & low movement joints
Arbomast GP is part of the ARBOSeal Pro® range and remains a staple in traditional construction. This oil-based pointing compound forms a surface skin while remaining pliable beneath, ensuring long-term performance.
Applications:
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Timber frame perimeter sealing
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Concrete panel joints (e.g. garage construction)
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General low-movement pointing
It is overpaintable and offers long service life when maintained correctly. However, it is not suitable for high movement expansion joints.
For builders working on traditional structures, Arbomast GP remains one of the most practical products within ARBO sealants UK.
Arbothane 1245 – Polyurethane Joint Sealant
Best for concrete & industrial joints
Arbothane 1245 is a one-part polyurethane sealant designed for demanding construction environments. It provides excellent adhesion to concrete and masonry and is suitable for floor joints and industrial applications.
Key Features:
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High durability
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Abrasion resistant
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Good chemical resistance
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Suitable for trafficable joints (subject to specification)
Polyurethane sealants are often chosen for their mechanical strength. Arbothane 1245 is particularly effective in situations where movement and durability must be balanced.
For more on polyurethane sealant performance standards, you can refer to EN 15651 guidance via the European Commission construction product regulation framework:
https://single-market-economy.ec.europa.eu/sectors/construction/construction-products-regulation-cpr_en
Arbo Membrane Adhesive
Best for EPDM membrane bonding
Buy Arbo Membrane Adhesive here
Arbo Membrane Adhesive is specifically formulated for bonding EPDM membranes to suitable substrates. It is commonly used in façade detailing, window installations and waterproofing applications.
Typical Uses:
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EPDM membrane installation
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Damp proofing details
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Sealing and bonding in façade systems
When installing EPDM materials, compatibility and correct surface preparation are essential. If you’re working with EPDM products, you may also find this guide useful:
👉 Best adhesive for rubber bonding
Arbosil 1096 – Low Modulus Glazing Silicone
Best for curtain walling & perimeter glazing
Arbosil 1096 S is a low modulus neutral cure silicone designed for glazing applications. With ±25% movement capability, it is suited to curtain wall assemblies and perimeter seals.
Key Characteristics:
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Neutral cure (non-corrosive)
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Excellent adhesion to glass & aluminium
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Good UV resistance
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Professional glazing specification product
In glazing projects where flexibility is needed but extreme movement is not expected, Arbosil 1096 remains a reliable solution within ARBO sealants UK systems.
Comparison Table: Choosing the Right ARBO Product
| Product | Type | Movement | Overpaintable | Best For |
|---|---|---|---|---|
| MP20 | Silicone | ±50% | No | Expansion joints |
| HM | Hybrid | ±25% | Yes | General construction |
| Arbomast GP | Oil-Based | Low | Yes | Timber frames |
| Arbothane 1245 | PU | ±25% | Yes | Concrete joints |
| Arbosil 1096 | Silicone | ±25% | No | Glazing |
| Membrane Adhesive | Adhesive | N/A | N/A | EPDM bonding |
| ARBOBOND Pro Universal | Hybrid | Flexible | Yes | General bonding & grab adhesive |
Why Buy ARBO Sealants from Adhesive Supply Company?
When sourcing ARBO sealants UK, product authenticity, storage conditions and dispatch reliability are just as important as price.
At Adhesive Supply Company we offer:
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Genuine ARBO products
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Competitive trade pricing
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Bulk discounts
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Fast UK dispatch
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Technical support for substrate compatibility
Whether you’re specifying sealants for a commercial façade or sealing perimeter timber frames, our team can help ensure you choose the correct product for your application.
Final Thoughts
Selecting the right sealant is about more than just brand familiarity. Movement capability, substrate compatibility, paintability and environmental exposure all influence performance.
The ARBO range provides a solution for nearly every joint type found in modern construction. By understanding the strengths of MP20, HM, Arbomast GP, Arbothane 1245, Membrane Adhesive and Arbosil 1096, you can make a technically sound choice for your next project.
If you’re comparing options within ARBO sealants UK, explore the full range and speak to our technical team for application advice.