Spray Foam Insulation

DURATHERM® OS Spray foam system

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Product Description

DURATHERM® OS is an HCFC AND CFC FREE two component, 1:1 ratio, rigid foam system which when processed through suitable spray machinery (Graco, Gusmer, Glas-Craft) will produce a rigid foam of approximate density 35kg/m3 with exceptionally good compressive strength. Service Temp range -15oC to 70oC. When tested to BS476 part 7 the foam achieves a Class 1 surface spread of flame.

Uses

DURATHERM® OS is used for:

• Retrofit insulation / stabilisation for pitched / flat roofs
• New build insulation
• Loft conversions
• Commercial buildings
• Ocean going yachts / canal barges

DURATHERM® OS can be used to upgrade the thermal performance of roofs, floors or walls of any property, to meet current building regulations. Standard DURATHERM® OS should not be used on substrates below 5°C.

Equipment

DURATHERM® OS can be processed through all standard foam spray machines. The machine should be capable of maintaining the mix ratio at ±2% accuracy and controlling the component temperatures at 40-50oC (variable).

Recommended machine settings

Spray Techniques

The guidelines in Isothane Limited’s standard specification should be followed but the general requirements are as follows.

• The substrate should be clean, dry and free of dirt, grease, oil and loose particles.
• In certain cases primer may be necessary to maximise adhesion.
• Climatic conditions must be suitable for spraying with regard to humidity and wind velocities.
• The foam should be built up in passes of not less than 15mm and not more than 10 minutes should elapse between passes.
• The requirements of any relevant Agrément Certificates or British Standards should be followed.

Physical Properties

DURATHERM® OS is a two component, modified polyurethane rigid foam which, sprayed through suitable foam machinery, gives a product of nominal density 35 kg/m³.

Storage, Handling and Personal Protection

Shelf Life 12 months. The recommendations in our Safety Data Sheet for this product must be followed at all times. More general information is included in our publication “A Guide to the Safe Handling of Polyurethane Chemicals” and in the following Technical Data Sheets which are available on request:-

• Fire safety when Storing, Handling and Installing Polyurethane Foam.
• Decontamination of Isocyanates using Isothane Decontaminant.