Calculating the energy costs within a building can be a complex process with many influencing factors. In this article, we will be explaining some of the benefits of using spray foam insulation to minimise your energy costs.

Benefits of spray foam insulation for roof waterproofing and sealing

Click on the image to view a video of the SprayFoam Soultions team sealing and waterproofing the roofing of a commercial building in Port Elizabeth.

The most significant contributor to energy loss is an under-performing building envelope (or enclosure).

This envelope includes the roof of a building as well as the walls, floors and foundations.

When it comes to improving on your building’s envelope there is no insulation solution that performs as well as Sprayed Polyurethane Foam (SPF).

Essentially there are a number of issues that impact a building’s energy performance.

These include air movement and moisture as well as thermal drift or R-value drift.

All insulation systems perform at different levels depending on environmental conditions. An R-value performance can actually change as much as 50% or more. Sprayed polyurethane foam has very little R-Value drift.

'Architectural Testing Inc. of York, PA conducted similar tests in which the thermal performance of fiberglass was compared to that of polyurethane foam under comparable conditions. Report No: ATI-3822-5A conducted on 10/24/86 produced striking results. As conditions become more severe, the fiberglass performance became increasingly poorer. The integrity of the foam sample was far less compromised during harsh conditions.’

Thermal bridging with SPF

A thermal bridge, also called a cold bridge or heat bridge, is an area of an object (frequently a building) which has a significantly higher heat transfer than the surrounding materials resulting in an overall reduction in thermal insulation of the object or building.

One of the biggest areas to improve upon for energy savings and reduction of carbon emissions within a building is the roofing assembly.

The two major areas where you can see huge benefits when SPF is applied is the top of a roofing deck and the underside of roofing systems.

Benefits of using Spray Foam Insulation

Foam insulation has many advantages over traditional roofing methods:

  • Polyurethane foam is applied as a seamless liquid. The flawless membrane prevents traditional leaking problems.
  • SPF can be sprayed into any gap and onto virtually any surface. Cavities, irregularly shaped roofs and protrusions are readily taken care of.
  • Sprayed polyurethane foam roofing typically weighs less than other insulation solutions.
  • The SPF has the best insulating properties available for construction today.
  • Foamed roofs require minimum upkeep, creating little waste and have an indefinite lifespan.
  • SPF creates a barrier against air and moisture as well as providing excellent thermal insulation which can simplify the roofing design and construction of a building.
  • Suitability with other roofing systems. For example:
    • gravel-surfaced systems;
    • single-ply membrane technology;
    • fully adhered fleece-backed membranes;
    • and loose-laid ballasted systems can all be used with ccSPF roofing systems.
  • When SPF is applied to the underside of roofing assemblies, it provides a seamless air and thermal barrier marrying the roof and wall together. The barrier provides significant energy efficiency benefits because of its high R-value, providing outstanding air sealing properties with ease of application.
  • Roof repairs, in areas where bad weather is an issue, spray foam can help reinforce existing roofs from the inside out saving you on re-roofing costs by making use of the older structure. By applying an even thick layer of SPF across the rafters and trusses, the resulting composition is stronger than nails and screws by themselves. If the building is going up from scratch, the spray foam can be applied to the entire framework and increase the power of the building to withstand storms and high winds.

Spray Foam Solutions South Africa

Polyurethane spray foam is cheaper, easier to apply and performs better than any other insulation solution especially in roofing applications.

Additionally, SPF is unmatched when it comes to waterproofing applications, effectively providing a durable roof replacement application. SPF is also the preferred solution to flat roof waterproofing of commercial buildings.

For more information about polyurethane foam insulation, please contact us.