“South Africa is beginning to wake up to the benefits of spray foam,” believes Duncan Goldsmith, managing director of Rigifoam, who says that they are supplying an increasing amount of this type of insulation to a variety of local buildings.

Rigifoam and its sister company, Resichem, supply various insulation solutions which provide substantial resistance to heat flow and additional benefits such as favourable acoustics and waterproofing.
 
“South Africa is beginning to wake up to the benefits of spray foam,” believes Duncan Goldsmith, managing director of Rigifoam, who says that they are supplying an increasing amount of this type of insulation to a variety of local buildings.

Ecospray is “green” blown sprayed polyurethane foam (SPF) with zero ODP, zero GWP and VOC exempt, and is claimed to be an insulation and sealant like no other.

It forms a continuous air barrier on walls, roofs, around corners and on many surfaces in and around a home or building. It is created on site by mixing two formulated liquids through a high-pressure dispensing unit that reacts very quickly, expanding on contact to create rigid thermal insulation foam. It not only insulates, but seals gaps and forms a barrier against moisture (closed cell) and unwanted air movement.

By creating a tight barrier around a building surface, SPF helps to prevent hot and cold air from infiltrating a building’s comfortable interior environment and saves on energy costs to maintain this comfort. SPF insulation is known to resist heat transfer extremely well, and it offers a highly effective thermal resistance with an R value of 1,04m2 per kW per 25mm of thickness.

As SPF is also an air barrier, meaning it is impermeable to air, this is an important consideration in building science because it can improve insulation performance and indoor air quality. There are no joints or gaps in application, thus minimising heat bridging.

SPF can be applied either to the top or underside of a roof assembly. If applied externally, a UV barrier coating must be applied to prolong the insulation properties and structural quality of the foam. SPF can also be applied to a concrete deck with a screed applied directly above. When spraying the underside of a tiled roof structure, this seals off any air gaps and creates an airtight and watertight envelope. This also creates a form of security as the bond of foam to the tile makes for very difficult removal.

Loss-fill insulation laid between rafters is not as efficient as one expects as air movement through the medium nullifies its thermal properties. A way to compare this is like wearing a sweater; sheltered from wind you are warm, yet the minute you are exposed to the wind the cold air goes right through the sweater, creating discomfort. The same principle applies to a no-closed cell-insulation medium.

In conclusion it can be said that SPF can help with improved efficiency and reduced air loss/gain to reduce energy costs.

What benefits do spray foam offer?

  • High insulation R-value.
  • Seamless air barrier.
  • Restricted moisture transmission.
  • Added structural strength.
  • Minimised sound transmission.
  • Does not shrink or settle.
  • Promotes better indoor air quality.

Rigifoam
Tel: 011 421 0313
Fax: 011 421 0410
E-mail: duncan@rigifoam.com
Website: www.rigifoam.com