The insulation that thinks it is a brick


The insulation that thinks it is a brick

If thermal bridges are not properly addressed,
they simply become responsible for a greater proportion
of the overall heat loss from a building.

65-140 mm
450x100-215 mm
200 kg/m³
Compressive strength
≥ 2.75 MPa
λ value
≤ 0.058 W/(m·K)


- Floor-wall base element 
- Parapet walls
- Internal partitional walls
- Below window- and door sills

Product presentation

FOAMGLAS® PERINSUL HL is manufactured from cellular glass which can support an extremely high compressive load without any deflection or movement. Due to the density of the closed cellular glass cell structure, it provides a structural thermal insulation solution. There is no need for any additional stiffening or mortar re-enforcement. The FOAMGLAS® PERINSUL HL will have adequate durability and a life equal to that of the wall in which it is installed.

Learn more about it in our thermal bridging training video!

Product type PERINSUL

The closed cell nature of PERINSUL HL means
- it will retain its low thermal conductivity
- it resists the passage of moisture and vapour into the structure, contributing to other damp proofing measures and
protecting timber and steel components.

Cellular glass insulation does not shrink or degrade over time, retaining its performance for the life of the building and has the potential for re-use in future projects.


Capable of bearing the structural loads of a three storey building, FOAMGLAS® PERINSUL HL is laid in a mortar bed and eliminates thermal bridging at junction details. It is a unique load-bearing insulation element, and has been tested in accordance with Eurocode 6 specifically to bear loads imposed by structural masonry.