Arbosil Kitchen and Bathroom Sealant

Arbo Kitchen and Bathroom Sealant is a one part high modulus acetoxy cure silicone sealant which cures on exposure to moisture vapour to form an elastic silicone rubber.

Recommended for use around baths, showers, sinks, wash basins, kitchen worktops and many other sanitary and internal applications. Contains a fungicide to inhibit mould growth. Not recommended for overpainting, use against most metals and use against natural stone.

Recommended accessories:

  • Arbo Primer 2650.
  • Arbo Primer 2402.
  • Arbo Primer 2172.
  • Arbo Cleaner No. 17 (Xylene based – not suitable for use with plastics or delicate finishes).
  • Arbo Cleaner No. 16 (Alcohol based).

General information

Uniclass 2015

Pr_30_31_76_77 Silicone construction joint sealantsPrimary


N11/390 Sealant

N11/50 Sealant

N12/470 Sealant

N13/580 Sealant for pointing

N13/68 Sealant for pointing

Specification data - Silicone construction joint sealants

Product Reference

Arbosil Kitchen and Bathroom Sealant

Standard product features



Product Options

Joint size suitability:

- Joint width:

  • Minimum: 6 mm.
  • Maximum: 25 mm.

- Joint depth:

  • Minimum: 10 mm on porous substrates (6 mm on non-porous substrates).
  • Maximum: 15 mm.

- Width: depth ratio (within above min/ max restrictions):

  • 2:1 butt joints.
  • 1:1 lap joints.

Technical data:

  • Skin time at 20ºC/ 65% RH: 10 minutes.
  • Application temperature: 5–40ºC.
  • Service temperature: -40 to +150ºC.
  • Typical Shore Hardness: 20.
  • Cure rate at 20ºC/ 65% RH: 2 mm/ 24 hours.
  • Chemical resistance: Resistant to most dilute acids and alkalis. Organic solvents may cause the sealant to swell and lose adhesion.
  • UV resistance: Very good.
  • Service life: 25 years+.
  • Movement accommodation: Butt joints (movement in tension and compression): 25%. Do not exceed ±33% in any one direction.
  • Lap joints (movement in shear): 50%. Do not exceed ±66% in any one direction.

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