Water based acrylic copolymer adhesive and bonding medium
to be mix with OPC (Ordinary Portland Cement) designed for use
with EPS (Expanded Polystyrene Sheet) thermal insulation and
other ICF type systems
– for exterior use
– unsaponifiable
– for new work and maintenance
– good filling and leveling properties
– very good adhesive properties
– very good cohesive strength
COLOUR AND GLOSS: off-white, (finish colour dependant upon OPC colour) Flat

Product Details
SKU: 902 Category: Tag:

Basic Data At 20 °c

Mass density: approx. 1.77 Kg/l without cement
Solids content: approx. 78 % by weight, without cement
Theoretical spreading rate: approx. 1.7 kg/m2 per mm thickness
depending on the nature and condition of the substrate and the application method adopted
Pot life after mixing: approx. 2 to 3 hours depending on temperature and ratio of OPC
Induction Time: 5 minutes
Over-coating interval: min. 24 hours (48 hours following fixing of EPS)
max. no limitation
Shelf life (cool, dry place): 12 months

New substrates
– concrete, block, brick and cement render
– dry, neutral and free from efflorescence and surface contamination
– no surface deviation greater than 10 mm over a 2 m stretch
– minimum adhesive strength of applied 1 mm thick test patch
0.3 Mpa

Mixing ratio 5 – 7 kg OPC to 25 kg of Sigma Insotherm Mortar
– mixing ratio is dependant upon ambient temperature:
> 30ºC ratio = 0.28 – 1 kg. < 30ºC ratio = 0.2 – 1 kg - mixing by a mechanical mixer - each individual batch mixed in clean drums

Method Of Application

Steel Trowel, Grooved Trowel, Tamping Board


Complies with VOC specifications such as LEED etc.


There are no reviews yet.

Be the first to review “SIGMA INSOTHERM MORTAR BINDER”

Your email address will not be published. Required fields are marked *


Water based acrylic copolymer adhesive and bonding

  • For new work and maintenance

  • Good filling and leveling properties

  • Very good adhesive properties