The Iso-Spray Roof Insulation Bonding System

Sprayed Polyurethane Foam has been used successfully since the mid 1970's to bond, seal and insulate tile, slate, asbestos and metal roofs. It offers excellent roof insulation.

Our confidence in the system is based on the established long-term effectiveness of roof bonding combined with our extensive practical experience of installation for over 20 years.

Iso-Spray is committed to thorough initial inspections, the specification of appropriate remedial repairs and competent foam application.

Iso-Spray Spray Foam 2 Part Polyurethane Product:

The Iso-Spray system is based on a two component rigid foam supplied to us by one of the most respected manufacturers in the industry, Isothane.

The material is both CFC and HCFC free and conforms to the new regulations that came into force in January 1st 2004 with regard to the Montreal Protocol stipulating that all insulation materials must have a zero rated ozone depletion potential.

This fire retardant material achieves a Class 1 surface spread of flame rating and as such will not add to any fire hazard in a loft space.

The applied foam has a core density of 32-36 Kg/m3. At normal application depths this adds less than 2 kg/m2 to the roof structure.

The Process:
The material is processed through a proportioning pump fitted in our van. This machine is driven by compressed air and requires electricity from the domestic supply to power switches and the heater block.

A twin-heated hose is fed from the van to the point of application in the roof space. The two components mix at the tip of the spray gun under pressure and are reacting as they are applied to the underside of the roof structure.

The flow of the rising foam seals the gaps, which previously allowed the ingress of freezing winds and wind blown rain and snow.

The polyurethane class 1 fire retardant foam sets hard in minutes and its exceptional bonding characteristics enable us to confidently guarantee that treated slates or tiles will not slip for a period of at least 20 years and provides excellent roof insulation.

Roof Insulation

Closed cell polyurethane foam has excellent insulation qualities and will reduce the condensation that normally occurs in a roof. Specific apertures are maintained at the soffit to maintain ventilation to the loft space.

Iso-Spray is also experienced in the installation of velux type roof windows, which in combination with a greater depth of foam insulation provides the basis of a successful loft conversion.