46 Chetwynd St., Loganholme, Queensland, 4129, Australia
P07 3806 1944 (+617 3806 1944) F07 3209 7711 (+617 3209 7711)



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 The Pouring Foam System is designed to produce a "free‑rise" foam of 37 kg/m3 (2.3lb/ft3) nominal density when the components are mixed in the correct ratio (1:1) by weight and using the prescribed temperature (25'C) and processing conditions.

 Warming all mould/contact surfaces to 30-40°C will give the best results. 

·          In practice the density will be influenced by the configuration of the cavity in which the foaming process takes place. 

·          Restrictions to flow will result in increased density. 

·          Variations from recommended temperatures for components and moulds will also effect moulded density. 

 Warming of both components Polyol and Isocyanate to 25°C will significantly improve the efficiency and flow of the system


 Calculate the volume to be filled. From this foam volume requirement, calculate system weight based on finished foam density of nominal 40 kg/M3 or imperial equivalent 2.3 lb/ft3 ie. each cubic metre nominally requires 40 kg Pouring Foam system made up of 20 kg Polyol and 20 kg Iso.  

The quantity of system will generally be greater than the calculated quantity to allow for residues in weighing and mixing containers, the amount of overpacking required to fill the void/mould shape, and the quantity of material mixed for each pour/mix. 

Procedure All materials and equipment should be prepared and set up in advance to ensure rapid and efficient sequence from the time the operation is started. 

(1) Accurately weigh the required quantity per pour/mix of Polyol into a dry, clean container.

(2) Immediately add the required quantity of Iso (same weight as polyol) to the same container. 

(3) Immediately mix the two components using a high speed mixing blade and as soon as mixing is complete, pour into mouldlvoid space. Mixing time of approximately 20 seconds is normally sufficient. 

Mixing A power operated mixer Is essential. As a general rule minimum requirement is a speed of 2500 RPM with a blade capable of giving high shear with adequate turbulence. Mixing time must be long enough to give complete mixing, but short enough to ensure that mix and pour operations are complete within the Cream Time of the system, typically 30‑35 seconds. 


There are a number of machines from several manufacturers suitable for use with the Pouring Foam Series of systems.  Minimum requirements are capability for accurate metering and timing of shots, and ability to maintain temperature of components within a limit of ± 2°C of the selected temperature for each component. 

For most applications a temperature of 25°C to 30°C for polyol and iso is required. Viscosities and react" figures may be changed by controlled temperature variation within operational limits. 

When using the Pouring Foam system through polyurethane spray foam equipment, Gusmer/Grayco or similar, in 'injection' applications similar temperature settings are used. The application conditions are important in determining the appropriate temperature settings for the two components. 


Suitable moulds can be made from sheet metal, fibreglass (fro) or filled epoxy systems. To facilitate release, mould surfaces must be smooth and polished and a coating of release agent must be applied between each process.


 ·          In all external exposure and some internal applications the PUR foam surface must be protected from weathering/physical deterioration by:

 v       the application of a selected elastomeric membrane coating ‑ typically acrylic, polyurethane or bituminous types.

 v       application of a Fibreglass/Polyester Resin FRP 'skin'.

 v       application of metal sheeting or other weatherproof treatment.

 §          In specific temperature and humidity conditions the effects of water vapour 'drive' must be considered in system design and application requirements.

 ·          When spraying or pouring, excessive thickness should not be applied as the exotherm of the reaction may lead to spontaneous combustion, excessive pressure build up or thermal expansion from the significant heat developed in the foaming reaction.

 ·          Irritating vapours may be generated from both the ingredients during the foaming process. Use only in well ventilated areas according to Safety and Handling guidelines as set out in the Material Safety Data Sheets.

·          Use only in temperature condition where the maximum contact surface temperature is +85°C and the minimum contact surface temperature is ‑50°C.

 ·          Special precautions need to be taken in regard to system design and specification under possible water vapour condensation temperature conditions, or in conditions of high levels of water vapour/high humidity conditions.

 ·          All polyurethane & polyisocyanurate foams may present a fire hazard in certain applications if exposed to fire andlor excessive heat eg. welding, and cutting torches, in the presence of oxygen or air. The use of Polyurethane Foam in interior applications may present an unreasonable fire hazard unless the foam is protected by an approved fire‑resistive thermal barrier. Consult Building Code of Australia for specific direction.


 Drums should be stored on pallet/s. Do not store/stand drums directly on cold concrete floors. 

Both product containers must be kept sealed. 

Both components are moisture sensitive. 

The Polyol component (Part B) is hygroscopic (will absorb water vapour from the air) which affects its reaction with he Iso (part A) component. 

The Iso component will react with absorbed water vapour resulting in crystallisation. 

Always wipe the threads of the Iso container clean with a clean rag prior to replacing the screw lid.  Failure to do so will result in the Iso acting as a glue and “gluing” the lid to the container. 

The Polyol component (Part B) contains a blowing agent which will evaporate if the container is not kept sealed.  The loss of this component will cause a reduced amount of blowing and thus the volume yield will be reduced. 

If available, use a Dry Gas spray into each can prior to sealing.  Use the dry gas in accordance with the directions provided with the dry gas.  This will largely eliminate moisture access to the components. 

Store internally at 18°C to 30°C Avoid storage near sources of radiated heat or against external walls subject to significant temperature variations. 

Please refer to MATERIAL SAFETY DATA SHEETS for precautions for safe handling and working with each component of the system, danger to certain individuals and decontamination of spills.



Please call Boatcraft Pacific 07 3806 1944 ( +617 3806 1944) for how to contact your nearest reseller.

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