Master Thermoshield Polyurethane Spray Insulation

The Master ThermoShield Polyurethane Spray Insulation is a hassle-free solution that makes living and working environments way more comfortable while saving money by reducing electricity and gas bills. Polyurethane is a rigid composition that is recognized globally as the best insulation material for housing and construction field. It is a true cost effective product which forms a protective crust offering better insulation than any other material.

Insulating your Ceilings, Walls and Floors by Master ThermoShield Polyurethane Spray helps keep your home, office or production units cool in summers and warm in winters. Not only that but it also reduces noise levels to enhance the environment in your living or work space.


Waste Disposal

Disposal of waste should not be in conflict with national or international regulations.

If you are in doubts or need further clarification, please contact the nearest Master office for advice. More information on waste disposal can be found at the following web page:

Typical chemical and physical properties

Reactivity Cup test according to receiving control*
Cream time 5s
Gel tims {string time} 10s
Density (free rise) 29 kg/m3


Properties Standard Value**
Core Density DIN EN ISO 845 35 kg/m3
Compressive Strength DIN 53421 0.23 N/mm2
Compression DIN 53421 8 %
Flexural Strength DIN 53423 0.25 N/mm2
Bending DIN 53423 15 mm
Water Absorption DIN 53428 < 1.8%
Thermal Conductivity DIN 52612 0.0180 W/m K
Water Vapour Diffusion
Resistance Factor
DIN 52615 55
Foam Stability
Subjected to Loading
DIN 18159 3 %
Closed Cells ISO 4590 93
Burning Rate ISO 3585 1.4 mm/s


Property Polyol-component
without blowing agent
with blowing agent
Density, 20 C 1.13 g/cm3 1.23 g/cm3 DIN 51757
Viscosity, 20 C 5,500 mPa-s 300 mPa-s DIN 53018
Polyurethane Spray

Insulation System

Since the polyurethane foam adheres to most common surfaces, it can be installed on any roof slope. Before the Polyurethane Spray insulation can be applied, the roof deck needs to be prepared. The surface must be dry and free of oils, grease, dirt and debris that could affect the adhesion of the foam. In some cases, a waterproofing membrane or chemical waterproofing is applied on the roof for extra protection before the spray foam installation.  The Polyurethane is then sprayed onto the roof surface rising up to the required thickness. Once it hardens into foam, a thin layer of plastic sheeting (separation layer) can then be placed over the insulation along with a layer of cement screeding reinforced with weld mesh or a gravel layer with cement/ceramic tiles. As a final layer, the Master Thermoshield Polyurethane Spray insulation can be covered with UV resistant paint for a long lasting result.

Polyurethane Spray

Industry Applications

Talk to an Expert