High-Modulus One-Part Sealant for Heavy-Duty & Vandal-Resistant Joints
Arbomeric MP20 is a high-performance, one-part modified polymer sealant that cures on exposure to moisture vapour, forming a tough yet elastic rubber. It’s ideal for structural joints in high-traffic areas, including prisons, secure units, and commercial floors, where durability and anti-vandal properties are essential. The sealant is compliant with BS EN ISO 11600 – F – 20 HM and suitable for use in a wide range of demanding construction environments.
Key Features & Benefits
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High-Modulus Performance: Provides robust sealing in structural and high-movement joints.
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Anti-Pick & Anti-Vandal: Designed for secure units, public buildings, and supervised environments.
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Excellent Chemical Resistance: Resists most dilute acids and alkalis (note: organic solvents may affect adhesion).
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UV & Weather Resistant: Offers long-term performance with very good UV resistance.
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Paintable After Curing: Over-paintable once cured (test for compatibility with chosen paint system).
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Wide Application Temperature Range: Apply between +5°C to +35°C; service range −40°C to +120°C.
Product Details
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Packaging: 380ml polyethylene cartridges and 600ml foils
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Box Quantity: 25 cartridges per box (includes nozzles)
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Colours: White, Grey, Black
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Movement Accommodation: Butt joints: ±35%; Lap joints: shear movement
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Shore A Hardness: Approx. 50
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Ultimate Elongation: 220%
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Modulus @ 100% Extension: 1.0–1.12 N/mm²
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Tensile Strength @ Break: 1.3–1.6 N/mm²
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Skin Time: 20–30 minutes at 20°C/65% RH
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Storage: 12 months in original unopened packaging, stored cool and dry
Application Instructions
- Ensure joint surfaces are clean, dry, and free from contamination.
- Degrease with ARBO® Cleaner (No.17 or No.16 depending on substrate sensitivity).
- Prime porous surfaces with ARBO Primer 2650 as recommended.
- Insert appropriate closed-cell polyethylene foam backing rod where required.
- Apply sealant evenly using an ARBO caulking gun, ensuring full joint coverage.
- Finish and tool off as needed before skinning begins (within 20–30 minutes).
Typical Uses
- Structural joints in heavy cladding and commercial flooring
- Movement joints in prisons, secure units, or high-abuse areas
- Floor joints in high-traffic internal spaces
Note: Not suitable for lightweight cladding or swimming pools. Always test paint compatibility prior to overcoating.