Product Data Sheet Show all documents
EVERBUILD® EVERFLEX® 450 Builders Silicone

EVERBUILD® EVERFLEX® 450 Builders Silicone

A premium quality low modulus neutral cure silicone sealant

EVERBUILD® EVERFLEX® 450 Builders Silicone is a premium quality low modulus non-corrosive neutral cure silicone sealant that adheres to virtually all substrates, both porous and non-porous. Typically used for construction expansion joints and perimeter pointing of all types of door and window frames.

  • Excellent adhesion - adheres to most common surfaces including glass, metals, plastics and wood.
  • Low dirt pick up - important in PVCu work.
  • Excellent flexibility - +/- 25%.
  • High resistance to plasticiser migration - may be used over water based and solvent based paints.
  • Excellent external weathering properties.
  • Suitable for use on polycarbonate.
                                                                                                                                                                                                                                                                Shrinkage <5% ISO10563.
Product Data Sheet Show all documents

Usage

  • Perimeter pointing internally and externally around PVCu /wood and all other window frames.
  • Sealing and as an adhesive onto PVCu, plastic trims and components.
  • Bedding insulated glass units in accordance with relevant clauses of BS8000 Part 7.
  • Suitable as an expansion joint sealant.
  • Weather sealing and joint sealing to pre-formed panels.
  • Sealing soft metals such as lead, copper and zinc.
  • General glazing sealing and draughtproofing, including repair work over existing sealant.
  • Glass to glass and glass to aluminium sealing.
  • Parapet and roof weather sealing applications.
 

Advantages

  • Excellent adhesion - adheres to most common surfaces including glass, metals, plastics and wood.
  • Low dirt pick up - important in PVCu work.
  • Excellent flexibility - +/- 25%.
  • High resistance to plasticiser migration - may be used over water based and solvent based paints.
  • Excellent external weathering properties.
  • Suitable for use on polycarbonate.
                                                                                                                                                                                                                                                                Shrinkage <5% ISO10563.

Packaging

300ml cartridge

Colour

Buff, Black, Brown, Grey, Oak, Trans, White

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

  • Conforms to ISO11600 F and G 25 LM.
  • Certified under the harmonized European standard EN15651 for façade, glazing, cold climate and sanitary applications in compliance with the Construction Product Regulation.
  • Passed CFR 21. 177.2600(e) food contact test (except white).
Product Information

Shelf Life

18 months from date of manufacture (12 months for white)

Storage Conditions

Store in original unopened containers between 5 and 25°C

Density

ca. 1.02 g/cm³ ( 1.35 g/cm³ white)
Technical Information

Shore A Hardness

20

Tensile Strength

@ 100% elongation - 0.3MPa ISO 8339

Elastic Recovery

>80%

Movement Capability

25% ISO11600

Service Temperature

-50°C to + 150°C

Joint Design

6mm - 50mm.

Maximum depth, 50% of joint width

Application

Application Information

Curing Time

1-2mm per 24 hours

Skin Time

5 - 25 mins
Consumption

Consumption

10.5 linear meters as a 6mm diameter bead.
Application steps

SUBSTRATE PREPARATION

The surfaces to be sealed must be clean, dry and free from dust, grease and other contaminants.
Improve adhesion by wiping surface with EVERBUILDPVC SOLVENT CLEANER (PVC), EVERBUILD GLASS CLEANER (glass) or white spirits (painted surfaces). Priming is generally not required, although we always advise testing small areas prior to use. If use of primer is desired for non-porous surface use Silicone Primer NP2 or for porous surface use Silicone Primer P1.
Joint design should be as follows:
Minimum width: 6mm. Movement capacity will be impaired if the depth of the joint is greater than the width. For maximum movement accommodation, it is recommended that:
1. The joint depth should be no less than 5mm
2. Joint depth should be 6mm for joints up to 10mm wide
3. Joints above 10mm in width should be half the width in depth e.g. 20mm wide and 10mm deep.
For deep joints, reduce depth by using EVERBUILD FIX AND FILL EXPANDING FOAM or a suitable joint backer rod.
All joints should be designed so that the seal is placed in a position which does not retain water or form a water trap. Triangular fillets should be no less than 12mm across the face and should be finished with a flat or convex face.

CLEANING OF TOOLS

Uncured sealant white spirit, cured sealant EVERFLEX SILICONE EATER.

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