Arbomeric MP20 Modified Polymer Sealant

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

• High-Modulus Performance: Provides robust sealing in structural and high-movement joints.
• Anti-Pick & Anti-Vandal: Designed for secure units, public buildings, and supervised environments.
• Excellent Chemical Resistance: Resists most dilute acids and alkalis (note: organic solvents may affect adhesion).
• UV & Weather Resistant: Offers long-term performance with very good UV resistance.
• Paintable After Curing: Over-paintable once cured (test for compatibility with chosen paint system).
• Wide Application Temperature Range: Apply between +5°C to +35°C; service range −40°C to +120°C.

Product Details

• Packaging: 380ml polyethylene cartridges and 600ml foils
• Box Quantity: 25 cartridges per box (includes nozzles)
• Colours: White, Grey, Black
• Movement Accommodation: Butt joints: ±35%; Lap joints: shear movement
• Shore A Hardness: Approx. 50
• Ultimate Elongation: 220%
• Modulus @ 100% Extension: 1.0–1.12 N/mm²
• Tensile Strength @ Break: 1.3–1.6 N/mm²
• Skin Time: 20–30 minutes at 20°C/65% RH
• Storage: 12 months in original unopened packaging, stored cool and dry

Application Instructions

1. Ensure joint surfaces are clean, dry, and free from contamination.
2. Degrease with ARBO® Cleaner (No.17 or No.16 depending on substrate sensitivity).
3. Prime porous surfaces with ARBO Primer 2650 as recommended.
4. Insert appropriate closed-cell polyethylene foam backing rod where required.
5. Apply sealant evenly using an ARBO caulking gun, ensuring full joint coverage.
6. 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.