Combo Roof System

Monneli Colmefoam LHD

Spray Polyurethane Foam

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Technical Information
Product Description

Colmefoam LHD is a polyurethane spray foam system for the production of rigid foam with closed cells, used for roofs, walls and floor insulation over metal, concrete and plywood. The system is CFC-free and has Zero Ozone Depletion Potential (Zero ODP) value.


Colmefoam LHD is a composed of  Polyol Component (A), a mixture of polyol, catalyst, blowing agent and other additives  and Isocyanate-Component (B), a mixture of diphenylmethane- diisocyanate, isomers and halogen.

Packaging, Coverage / Consumption
  • Part A  : 220 Kg
  • Part B : 250 Kg
Shelf Life & Storage

Before the usage, the system should be made homogenous by mixing. The empty tank should be clean. More detailed information can be obtained from MSDS.

Materials must kept sealed and closed in covered shaded area.

Technical Properties


Viscocity 25 °C
mPa.s   580-630 180-240


Specific Gravity at
                 1.18     1.22-1.24


Storage Temperature
°C   10-25 10-25


          Light Yellow     Brown


Months          4           6


Lab Reactivity
        Cream Time 4-5


  Gel Time 8-10


  Free Rise Density 30-31

kg/m ³


Physical Properties
Density 40±2 kg/m ³ BS EN 1602: 2013

Average Water Absorption

Average Water Vapor Transmission





    ASTM C209:2015

ASTM E96-00

Dimensional Stability

Under Specific Temperature

& Humidity







BS EN 1604:2013

Closed Cell Content



ASTM D6226-10 Procedure 1

Thermal Conductivity



ASTM C518:2015

Compressive Strength at 10% deformation



BS EN 826: 1996

Tensile Strength parallel to

faces of thermal insulation

 180 kPa BS EN 1608 : 2013 

Fire Behavior

Class F/B3 Class BS EN  13501- 1:2007


Machine Conditions
                                  Component  Temperature                     30-50                 °C    
  Mixing Ratio A:B       1:1  
     Component Pressure                           50-80  bar


Environment Conditions
                         Ambient Temperature Between +10 and +48 °C
  Relative Humidity <85%  
  Wind Speed ≤ 20 km/h


Substrate Conditions
                                     Primer Flash coat of spray foam (1-2mm) When needed
  Substrate Temperature Between +10 and +48  °C
  Substrate Humidity ≤ 20 Without condensations on substrates Porous substrate Non- Porous substrates


Application Information
Instructions for use


  • Must be applied using plural-component spray equipment. The mixture reacts on the surface, adhering to it instantaneously, and expanding into a rigid foam
  • Thickness should be between 10-20mm. In order to maintain the designed density and  dimensional stability, it is not recommended to apply thicker layers.
  • Higher than recommended layer thicknesses, cause a decrease in density and worse dimensional stability of the foam. Very thin layers will increase the density and decrease product yield.
  • When applying a total thickness of (>6 cm), it is important to keep a time gap of 10 min between the layers. Longer time gap is necessary for thicknesses above 10 cm
  • The distance from the spray gun to the substrate is recommended to be approx. 80 cm.
Additional Information
Health & Safety

The isocyanate component irritates the respiration sytem, eyes and skin. This can have allergic reactions if inhaled or when comes in contact with skin. The required measurements indicated in the safety data sheet should be noted during handling of isocyanate. The same procedure should also be applied during handling of the A system (polyol) considering the risk available.

Important note

The information in this Technical Data Sheet is based on Colmef Monneli’s experience. Colmef Monneli does not accept any liability arising from the use of its products as it has no direct or continuous control over where or how its products are applied. All Colmef Monneli’s Data Sheets are updated on regular basis. It is the user’s responsibility to obtain the latest version.

additional materials
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Technical Properties Sheet
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