NBS Source

Warmshell Board Adhesive

Verified by manufacturer 4 months ago

Lime Green Products Ltd Third party certifications:
  • EN 13501-1 (Efectis)

    EN 13501-1 (Efectis)

    Certificate type

Breathable lime-based adhesive for wood fibre boards.

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  • For wood fibre insulation boards applied to porous backgrounds.
  • Applied with a notched trowel onto the back of wood fibre boards, before pushing up against the wall. It has sufficient grab to hold the board, but a supplementary mechanical fixing may be used if desired.


Warmshell Board Adhesive is designed to bond wood fibre boards to brick or other porous mineral backgrounds. It keeps the wall breathable and functions as a wicking layer, moving water away to where it can dry out. Warmshell Board Adhesive also works to prevent mould and rot with its naturally alkaline nature, and because it is mineral it is an integral part of the fire safety of any wood fibre installation on walls.

General information




Hydraulic lime




Pr_20_31_02_57 Non-bitumen-based bonding compoundsPrimary


P10/217 Insulation slabs fixed to backing wall

M21/20 External wall insulation system . . . . . .

M21/210 External wall insulation system

Product range

Warmshell Internal

Specification data - Non-bitumen-based bonding compounds


Lime and sand.

Environmental information

Contains Red List materials


Country of material origin

United Kingdom

Country of product manufacture

United Kingdom

Recycled content

0 %


Warmshell Board Adhesive Datasheet

Warmshell Board Adhesive Datasheet

Case studies

Sustainably Restoring Griffin Island

Sustainably Restoring Griffin Island

Third party certifications

EN 13501-1 (Efectis)

Warmshell Internal Fire Classification