LGS | Linear Gap Seal | Construction | Products | Siderise

Siderise LGS | Linear Gap Seal

Siderise LGS Linear Gap Seals are flexible, water resistant, intumescent linear gap seals that expand when exposed to heat.

They provide a versatile means of sealing junctions between building elements against fire penetration.

  • Up to 2 hours fire integrity
  • Fast and easy to install
  • Allows for structural movement +/- 25%

The compressible foam core accommodates different joint widths to allow for structural movement whilst additionally meeting requirements for cold smoke seal, thermal and acoustic properties.

Standard sizes are available to suit voids up to 150mm and provide a 2-hour fire rating. The material can also be used as an effective, adaptable fire stop inside cable trunkings – allowing for the installation of further cables.


For Technical Support with this Siderise Insulation solution please contact:


T:+44 (0) 1656 335819

Product Information