Bubble Foam Insulation
STYRISOL® boards are yellow closed cell extruded polystyrene for use as thermal insulation.


STYRISOL® boards meet the following requirements for the insulation of building and construction projects:
  • High thermal resistance
  • Minimal water absorption
  • high compressive strength
  • Non-perishable
  • Resistant to fungus and microbes
  • Resistant to vermin and rodents
  • Self-extinguishing additive
  • Good workability
  • Fully recyclable
Styrisol® as floor insulation


STYRISOL® insulation boards are placed directly under the flat and stabilized foundation. A PE-foil needs to be put above the insulation to prevent the mortar from getting between the joints of the boards (creates cold bridges).


The surface of the concrete needs to be smooth.
(1) Along the wall a patch strip needs to be placed up to floor level.
(2) Between the insulation and the concrete it's advisable to place a water vapour barrier (avoids cold bridges).
(3) The water vapour barrier has to cover the entire surface. Overlaps need to be joined with adhesive tape.

Concrete with reinforcement

The reinforcement in the concrete is to be placed in the upper part of the flooring, the minimum covering is 10 mm. Steel nets can be used as reinforcement.
The concrete needs to be protected against drying out too soon.

Concrete without reinforcement

It is recommended to limit the surface of the floorings to 40 m2.

Under floor heating

STYRISOL® insulation boards can be used in all standards under floor heating systems.

Click here for more information on Bubble Foam insulation.
Phil Bennis & Sons Ltd, The Old Creamery, Clarina Road, Patrickswell, Co. Limerick, Ireland.
© Copyright Phil Bennis & Sons Ltd 2012