A one part, low modulus, modified polymer sealant which cures, on exposure to moisture vapour, to form an elastic rubber.

Recommended for use in many applications, including perimeter sealing in curtain walling and polyester powder coated frames, structural joints in brickwork and blockwork, and joints in lightweight cladding.

Not recommended for floor joints.

Standard product features

Technical Data:

  • Skin time at 20º C and 65% relative humidity: 30 minutes.
  • Application temperature: + 5º C to + 35º C.
  • Service temperature: - 40º C to + 90º C.
  • Typical Shore A Hardness: 30.
  • Cure rate at 20º C and 65% relative humidity: 1-2 mm per 24 hours.
  • UV resistance: Very good.
  • Service life: 20+ years.
  • Chemical Resistance: Resistant to most dilute acids and alkalis. Organic solvents may cause the sealant to swell and lose adhesion.

Movement Accommodation:

  • Butt joints (movement in tension and compression): 70%. Must not exceed ± 33% in any one direction.
  • Lap joints (movement in shear): 125%. Must not exceed ± 66% in any one direction.
  • Modulus at 100% extension: 0.29 N/mm².
  • Ultimate elongation: 550%.
  • Tensile strength at break: 0.45 N/mm².

Joint sizes:


  • Minimum: 6 mm.
  • Maximum: 25 mm (single application).
  • Maximum: 35 mm (multiple applications).


  • Minimum: 10 mm on porous substrates; 6 mm on non-porous substrates.
  • Maximum: 18 mm.

Width: Depth ratio (within above minimum/ maximum restrictions):

  • Butt joints: 2:1.
  • Lap joints: 1:1.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-55-75/315 Construction joint sealants

NBS Specification

NBS Buliding logo
This product is associated with the following NBS clauses:

Product specification

An important note about specifying



Adshead Ratcliffe & Co Ltd


+44 (0)1773 826661

Product reference

Arbomeric MP10




[Arbo Primer 2650]
[Arbo Cleaner No. 16]
Alcohol Based.
[Arbo Cleaner No.17]
Xylene based, not suitable for use with plastics or delicate finishes.

Manufacturer details

Derby Road,
Derbyshire, DE56 1WJ
Tel +44 (0)1773 826661
Fax +44 (0)1773 821215
NBS Plus
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