GEN-X Acrylic Gap Sealer is a premium-grade, one-component, multipurpose acrylic sealant suitable for flexible filling of low movement joints both indoors and outdoors.
GEN-X is fast-drying and remains permanently flexible. It can be overpainted with most paints in 1 hour, and no sanding down is required.


Available in:
300ml cartridge

Blue construction logo


  • Internal and external sealing around timber and metal window and door frames
  • Windowsills
  • PVCu profile, trim, and cladding
  • Sealing cracks and gaps in brickwork, masonry, and concrete
  • Decorating
  • Skirting boards
  • Ceiling cornices
  • Joints between stairs and walls

See all applications in our Technical Data Sheet

See all applications in our Technical Data Sheet



How long after application can GEN-X be painted?

GEN-X is over-paintable within 1 hour.

Does GEN-X slump when being applied?

No, GEN-X has excellent slump resistance.

Can I use GEN-X for filling precast panel or external facade joints?

No, we would recommend our SabreSeal MS Façade for this application.

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