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Application

Suitable for perimeter pointing, PVCU windows, concrete and lead.

Description

A one-part, low modulus, neutral cure silicone sealant. 


Features and benefits:

  • Not recommended for overpainting or for use against natural stone.
  • Resistant to most alkalis and dilute acids; organic solvents may cause the sealant to swell and lose adhesion, but do not directly dissolve the material.
  • Very good UV resistance.
  • Available in nine standard colours.
  • Burns, but will not readily ignite, so does not constitute a fire hazard.
  • Should not cause migratory staining on porous surfaces, but dirt and dust washed into or around joints by rainwater may cause pattern staining.
  • The sealant itself may discolour in contact with rubbers, bituminous or pitch-based DPCs.
  • Contact with some metals may also cause discolouration.
  • Correctly applied, the sealant should not require maintenance, and has an anticipated life in excess of 25 years.
  • Health and safety: Some components are labelled as harmful. Use of this product should be recorded in the Project Health and Safety Plan.

General information

Color

Material

Silicone

Shape

Formless

Uniclass

Pr_30_31_76_77 Silicone construction joint sealantsPrimary

CAWS

L10/75 Sealant joints

L10/810 Sealant joints

L20/80 Sealant joints

L20/820 Sealant joints

Product range

Sealants and Facades
Silicone Sealants / Low Modulus

Specification data - Silicone construction joint sealants

Standard

To BS EN ISO 11600.

Material

Neutral cure.

Class

F-25LM.

Colour

Black.

Guidance for specification option:

310 ml.

Brown.

Guidance for specification option:

310 ml and 380 ml.

Buff.

Guidance for specification option:

380 ml.

Dark bronze.

Guidance for specification option:

310 ml.

Grey.

Guidance for specification option:

380 ml.

Portland.

Guidance for specification option:

380 ml.

Rustic red.

Guidance for specification option:

380 ml.

Translucent.

Guidance for specification option:

310 ml.

White.

Guidance for specification option:

310 ml and 380 ml.

Magnolia.

Guidance for specification option:

380 ml.

Anthracite.

Guidance for specification option:

380 ml.

Light grey.

Guidance for specification option:

380 ml.

Accessories

None.

Joint backing: Closed cell foam polyethylene rod.

Joint backing: Fibre-board with bond breaker tape.

Primer: Arbo Primer 2650.

Application temperature

+5 to +50°C.

Curing time

7–14 days.

Guidance for specification option:

Depending on joint configuration and atmospheric conditions.

Joint width

6 mm (minimum); 25 mm (maximum); 50 mm (multiple applications).

Guidance for specification option:

Joint depth:


  • Porous substrates: 10 mm (minimum); 15 mm (maximum).
  • Non-porous substrates: 6 mm (minimum); 15 mm (maximum).


Type

A combined joint filler/ bond breaker, such as closed cell foam polyethylene rod, should always be used to ensure that the sealant adheres only to the joint faces and not to the back.

Guidance for specification option:

Bond breaker tape should be used where the joint has been packed out with fibre-board.

Primer

A primer is not required for PVC-U surfaces.

Manufacturer guidance

  • Specify Arbo Primer 2650 for brickwork and concrete.
  • Primers are available to suit other substrates – refer to technical literature for details.

Capacity

310 ml.

380 ml.

Manufacturer guidance

  • Colour options supplied in various sizes.
  • Refer to colour selection for size options.

Literature

ARBOSIL LMS Data Sheet

ARBOSIL LMS Data Sheet

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