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. They are maintenance-free and resistant to fungi and vermin.
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.
Siderise LGS Linear Gap Seals are made from an open-cell flame retardant acoustic foam laminate with a graphite intumescent coating containing binders which ensure material flexibility.
In fire conditions, the seal maintains a close-fitting position to prevent the passage of cold smoke. At the designed temperature, the intumescent coating begins to expand on the fire side of the joint.
During this reaction, the foam gradually compresses and is replaced by the expanding mass of intumescent graphite.
The seal retains its flexibility on the non-fire side to accommodate any heat-induced movement of the structural elements. Thus the fire is prevented from penetrating rapidly into the joint.
Table 1: Fire Resistance to BS 476-20:1987
|Product Ref.||Max. Joint Width (mm)||Seal Width (mm)||Seal Depth (mm)||Integrity (mins)|
Application Technique: Compressed into gap/joint such that the multi-layers/banding are visible.
Siderise LGS Linear Gap Seals are supplied in 1 metre lengths of various widths to suit the size of the gap required.
The standard sizes are listed in the Fire Rating table above. For void sizes other than those tabled please contact the technical team.
Siderise LGS has been tested to EN ISO 10140-2:2010 and achieves:
Siderise LGS Linear Gap Seals environmental properties:
The following information is available upon request or via download from the website:
For technical advice or support please contact: email@example.com
For Installation Training or Site Inspections please contact: firstname.lastname@example.org
Published Version: LGS _v1_03_20221027_1711