Structural strength

Phenolic foams have a high strength to density ratio as well as a good compressive strength.

Phenolic foam composite panels have a density of 55kg/m3 and although strong are not structurally supporting.

When used in a structural (supporting) application phenolic  foam is typically used in densities of 80kg/m3 and above.

Panels of this density will support up to 64 tonnes /m2.

Resistance to chemicals and solvents

Phenolic foam is unaffected by oils, fuels, turpentine, benzene and ethanol. It is also resistant to solvents such as acetone,

methyl ethyl ketone and carbon tetra chloride. It is unaffected by products including saturated saline, olive oil and 10% sulphuric acid.

High concentrations of some acids and alkalis will cause swelling and or discoloration.

As a result of its inert and stable nature, and also because it contains no fibers, phenolic foam has been used successfully

in the food industry and in areas of exposure to food preparation.

Moisture resistance

Phenolic foam can be used in insulation systems where moisture resistance is a key issue.

The reasons for its excellent performance are:

Phenolic foam has a low water vapour permeance and is therefore highly resistant to the passage of water vapour

Phenolic foam has low water absorption which takes place predominantly in the cut/broken surface cells of the foam

Phenolic foam is non-wicking. This means that if water enters the insulation system due to the vapour barrier becoming punctured,

any moisture ingress is limited and confined to the punctured area.

This ensures moisture does not build up and compromise the whole system.

Environmental benefits

Phenolic foam has a high insulation value per unit of energy expended in its production.

Over the long term this quality compounds the environmental benefit of using phenolic foam.

In addition, phenolic foam panels are CFC and HCFC free