Everbuild Everflex Premium+ 450 Builders Silicone 300ml – BOX OF 25

Everbuild Everflex Premium+ 450 Builders Silicone 300ml – BOX OF 25

A low modulus, neutral cure RTV silicone sealant that adheres to a wide range of both porous and nonporous surfaces without the need for priming. Conforms to ISO11600 F25 LM. Excellent external weathering properties.

Units Per Pack 25
Size 300ml

£125.00£150.00 ex VAT

Everbuild Everflex 450 Premium+ Builders Silicone Sealant is a premium quality, low modulus, non-corrosive neutral cure silicone sealant that adheres to virtually all substrates, both porous and non-porous. Everflex 450 Premium+ sealant is high resistance to plasticiser migration, enabling it to be used over water based and solvent based paints.


  • 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.