SPA Foam Waterproof Insulation Roofing Solutions

The issue of waterproofing failures and defects caused by water penetration has plagued the building industry for many years resulting in huge rectification costs. There is a statistic often quoted in the building industry. Waterproofing is approx 1.5% of construction cost but accounts for 85% of building defect complaints.

The SPA Foam Waterproof Insulation Roofing Solutions comprises of a thick seamless layer of lightweight yet hard waterproofing insulation, which is spray applied to the outside surface of a roof.  The SPA Foam Waterproof Insulation Roofing Solutions will strengthen the existing roof and also offer exceptional Thermal and Noise insulation properties.

The SPA Foam Waterproof Insulation Roofing Solutions is a viable long-term alternative to removing and replacing the existing roofing material and as it is externally applied, can be installed without affecting or disrupting the workplace beneath.

The SPA Foam Waterproof Insulation Roofing Solutions is suited to almost all common types of industrial roofing; including corrugated fibro, aluminium, steel, concrete, timber, asbestos, bitumen and can also be applied over various sheet membrane systems.

A typical SPA Foam Waterproof Insulation Roofing Solutions installation consists of a primed roof substrate covered with spray-applied SPA Foam insulation, and protected by an elastomeric membrane.  The function and nature of each of these components is outlined in the subsequent sections.

For two reasons:  first, spray-applied SPA System insulation has the ability to bridge over cracks and holes to form a continuous blanket over the roof and, secondly, SPA System insulation has a closed-cell structure which effectively resists penetration by water.

The foam thickness can be installed between 15mm to 25mm per pass, and extra layers can be added without any negative consequences to the effectiveness of the system. This is often very helpful where there may be low sections where water may form large puddles on a roof / deck surface, extra foam layers may be sprayed to build up these areas and minimise such large areas of puddles. Please note however that due to the uneven surface and texture of the foam, small puddles may occur on flat surfaces,

however this will not effect the performance of the coating system where polyurethane elastomeric topcoats are installed.

Because the Thermal conductivity of aged SPA System (0.023W/m degrees K) is the lowest value (ie. the best insulant) of commonly used building materials it is far more effective on an equivalent thickness basis.

As different thicknesses of different materials have different insulation values, it is common to specify required thermal performance in terms of Heat transfer or Thermal resistance (“R” value).

R = thickness (m)/k  thus in the case of a metal roof that was to be insulated, if it was desired to have a “R” value of 1.08, then it would require the addition of a 25mm thick layer of SPA System or a 43mm layer of cork.