Silfix® LM

Silfix® LM

Hodgson Sealants

Premium alkoxy, neutral cure silicone sealant, for perimeter sealing of windows and doors, EN 15651 tested for general applications around the building envelope for internal and external use.

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Application

  • Good adhesion to a wide variety of surfaces including unplasticized polyvinyl chloride (PVC-U), coated timber, brickwork, concrete, glass-reinforced plastic (GRP), stainless/ galvanised steel, aluminium and lead.
  • Sealing penetration joints, gutters, fascias, trims and flashings in domestic and metal-clad buildings.
  • Perimeter pointing and sealing around timber, metal and PVC-U windows and doors.

Description

A single part, neutral cure, silicone sealant which offers good all-round performance and durability in most construction joints.

Features and benefits:

  • Good tooling and application characteristics.
  • Cures to form a durable weatherproof seal flexible at low and high temperatures.
  • Non-oxime based cure.
  • Conforms to EN 15651-1: F-EXT-INT-CC, EN 15651-2: G-CC, Tested by BSRIA and shown to be effective in meeting the requirements for DW144 Class C High-Pressure Ductwork up to 1500 Pa (Report No. 58936/2).

Applications:

  • Good adhesion to a wide variety of surfaces including unplasticized polyvinyl chloride (PVC-U), coated timber, brickwork, concrete, glass-reinforced plastic (GRP), stainless/ galvanised steel, aluminium and lead.
  • Sealing penetration joints, gutters, fascias, trims and flashings in domestic and metal-clad buildings.
  • Perimeter pointing and sealing around timber, metal and PVC-U windows and doors.

General information

Material

Neutral cure silicone

Uniclass 2015

Pr_30_31_76_78 Silicone glazing compounds and sealantsPrimary

CAWS

G20/950 Fascias/ barges/ soffits

G20/99 Fascias/ barges/ soffits

L10/810 Sealant joints

L20/80 Sealant joints

L20/820 Sealant joints

N10/460 Sealant

N10/760 Sealant bedding and pointing

N10/80 Sealant

R10/11 Aluminium gutters

R10/360 Sealant for gutters

Specification data - Silicone glazing compounds and sealants

Product Reference

Silfix® LM

Standard

EN 15651-1, EN 15651-2

Third-party certification

Consult manufacturer

Material

Neutral cure silicone

Class

F-EXT-INT-CC to EN 15651-1, G-CC to EN 15651-2

Colour

Anthracite (RAL 7016)

Black

Brown

Grey

Translucent

White

Teak/ Rosewood

Toffee/ Caramel

Fire performance

Consult manufacturer

Fungicide

None

Standard product features

Technical characteristics:

  • Adhesion: Excellent (See 'Applications' above).
  • Movement accommodation: ±25%.
  • Base technology: Silicone polymer.
  • Chemical resistance: Good to dilute acids and alkalis.
  • Curing system: Neutral cure - Alkoxy.
  • Hardness: Shore A: 24.
  • Curing rate: 2 mm per 24 hours (23°C/ 55% RH).
  • Tensile strength: ~1.5 N/mm².
  • Slump: Nil.
  • Ultraviolet (UV) resistance: Excellent.
  • Shrinkage: <5%.
  • Specific gravity: 1.01 g/cm³ (Transparent/ White), 1.5 g/cm³ (Colours) approximately.
  • Elongation at break: 550%.
  • Application temperature range: 5–40°C.
  • Service temperature range: -40°C to +150°C.

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