Isothane Durotherm OS Polyurethane Spray Foam

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          Isothane Durotherm OS is a HCFC AND CFC FREE two component, 1:1 ratio, rigid foam system which when processed through suitable spray machinery (Gusmer, Glas-Craft/Probler etc) will produce a rigid foam of approximate density 35kg/m³ with exceptionally good compressive strength. Service Temp range -50°C to 80°C. When
tested to BS476 part 7 the foam achieves a Class 1 surface spread of flame (i.e. does not spread flame).

CFC & HCFC Free
          Satisfies environmental criteria

Low Thermal Conductivity
          Achieves better insulation with less thickness

Closed Cell Structure
          Waterproof and resistant to ageing

Class 1 Fire Rating
          Can be used for interior insulation applications

Spray Application
          Ideal for refurbishment, roof bonding of slates and tiles. Minimal downtime

Chemically Inert
          No release of fibres, no styrene vapours, no restrictions on use, not toxic, zero nutritional
content.

Equipment
          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 40-50°C (variable).

Recommended machine settings
         * Block Temperature Minimum, operating 100-120°F / 40-50°C
         * Hose Temperature Minimum, operating 100°F / 40°C
         * Chemical Pressures Minimum, operating 500 psi,
         * not greater than 200 psi difference iso / res

Polyurethane Foam 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.
          The requirements of any relevant Agrément Certificates or British Standards should be followed.
          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.

Polyurethane Foam Spray Physical Properties
          Is a two component, modified polyurethane rigid foam which, sprayed through suitable foam machinery, gives a product of nominal density 35 kg/m³.

Laboratory test results (typical):-
          Cream time 3-4 seconds
          Tack free time 12-18 seconds
          Rise time 25-36 seconds
          Free rise density 28-32 kg/m³

Storage, Handling and Personal Protection
          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.

Typical Properties Of

Ozone Depletion Potential ZERO
Burning Characteristics – These are laboratory scale tests and bear no relation to
the performance of the material in a real fire situation. Care must be exercised in
the end use to satisfy the demands of the Fire Authorities, and moral obligations to
the safety of persons and property.

Extent of burn <25 mm BS4735-74
Surface spread of flame Class 1 BS476 pt. 7-87