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Application

Joints in compartment walls and floors, gaps between frames and structures at junctions of different materials.


- Suitable substrates:

  • Masonry to masonry.
  • Masonry to timber.
  • Masonry to steel.


Description

Single-part alkoxy-based fire resistant, elastomeric, neutral cure silicone sealant, providing up to four hours fire protection at internal and external building gaps and movement joints.


Features and benefits:

  • CE marked.
  • Tested in accordance with BS EN 1366-4 and ETAG 026. Classified to BS EN 13501-2.
  • Fully tested for up to 240 minutes' joint fire resistance.
  • Suitable for gaps up to 50 mm wide.
  • Assumed working life of ten years (to ETAG 026).
  • Certified 3rd party accreditation.
  • Air pressure tested up to 600 Pa.
  • Seal ratio at 2:1.
  • Neutral cure silicone sealant.

General information

Color

Grey

White

Black

Material

Silicone

Uniclass

Pr_30_31_76_77 Silicone construction joint sealantsPrimary

CAWS

P12/390 Sealant

P12/47 Sealant

Product range

Fire Resistant Sealants

Specification data - Silicone construction joint sealants

Material

Neutral silicone.

Colour

Grey.

White.

Black.

Guidance for specification option:

Available on request.

Fire performance

Up to four hours.

Guidance for specification option:

Fire resistance (to BS EN 1366-4).

Product Reference

Nullifire FS703 Fire Resistant Silicone Sealant

Air permeability

Air tight up to 600 Pa.

Guidance for specification option:

(to BS EN 1046).

Working time

Ten years.

Guidance for specification option:

Assumed working life (to ETAG 026).

Specific gravity

1.39.

Shore A hardness

23.

Guidance for specification option:

(to ISO 868).

Drying time

30–40 minutes.

Guidance for specification option:

Touch dry (at 23°C, 50% RH).

Cure time

1–2 mm/ day.

Guidance for specification option:

Cure through time (at 23°C, 50% RH): 1–2 mm/ day.

TensileStrength

0.7 MPa.

Guidance for specification option:

 (to ISO 8339).

Viscosity

Thixotropic.

Service temperature range

-40 to +150°C.