Other Products

Acoustic Insulation
Air-conditioning Ducting
Bulk Insulation
Cavity Brick Wall Insulation
Ceiling 2 in 1 (Nail-up Ceiling Thermal Insulation)
Ceiling Insulation
Cellulose Fibre.Blow-in Insulation
Cold Insulation Industrial
Cool Roof Coatings (External Application)
Composite Bulk Insulation
Down Lighters & Electrical Fittings
Expanded Polyethylene (EPE)
Expanded Polystyrene (EPS)
Extruded Polystyrene (XPS)
Fire Performance
Floor Insulation
Geyser Insulation
Glass Wool Insulation
Hot Insulation (Industrial)
Insulated Panels
Mineral Wool
Phenolic Foam Insulation
Pipe Insulation
Polyester Fibre (Flexible Blanket)
Polyester Fibre (Rigid Board)
Radiant Barriers
Reflective Foil Laminates
Rock Wool
Roof Insulation (Industrial)
Roof Systems & Spacers
Spray Foam Insulation
Vapour Barriers


Photograph courtesy of Isofoam SA (Pty) Ltd

Brick walls have high thermal mass, but without insulation are usually too cold in winter, and often too hot in summer if exposed to prolonged hot conditions. If a wall cavity is insulated, the internal thermal mass (i.e. the internal brick skin) is protected from external temperature changes, and becomes highly effective at regulating temperatures within the building.External walls should be insulated to reduce radiant, conducted and convected heat transfer.

Wall insulation can be installed:

  • Within cavities
  • On the inside and outside surface of solid walls

Insulate existing cavities by:

  • Pumping in loose bulk material to a measured density
  • Installing bulk insulation sheets/boards

If using a framed construction system, insulation should be placed within the wall framing. Insulation can also be installed outside the framing (but the insulation must be weatherproof to be effective).

Note that the amount of insulation installed may depend on the thickness of the walls and the size of the framing.

If building a new home or renovation, consider increasing the framing size to fit in more insulation. If using a solid construction system such as concrete, insulation should be placed on the inside of the solid wall within the cavity.


Ash & Lacy South Africa (Pty) Ltd
D&D Roof Insulations
Datlink Insulation & Acoustics
IPC Industries
Isofoam SA (Pty) Ltd
Isolite Cape (Pty) Ltd
Isowall SA (Pty) Ltd
Knauf Insulation Ltd
Rockfibre SA (Pty) Ltd
Rockwool Technical Insulation
Technopol SA (Pty) Ltd