Glossary - I


An impervious paint system is one which will prevent the passage of moisture or moisture vapour.

Inert pigments

Materials which are resistant to attack by chemicals normally encountered in the environment in which they will be used e.g. atmospheric pollution.

Insulation board

Commonly refers to soft fibre board but can also be used for similar boards of any composition.


To swell enlarge or expand when exposed to heat. Many fire retardant materials have this property.

Glossary of terms

Looking for definitions of terms of the trade? Our glossary will help.

Need more help?