Many industrial and commercial buildings including warehouses and agricultural buildings are constructed using profiled metal cladding and often they are only single skin. The problem with this type of construction is twofold:
a) they have little or no metal roof insulation and are subject to considerable heat loss
b) there is a very high chance that surface condensation will form on the internal surface.
All metals are good thermal conductors and therefore, they have poor insulation properties, which means that any heat that is generated within a steel building will just go straight out in to the atmosphere. In the cooler months condensation can form on the internal surfaces of a metal roof and walls.
Condensation occurs when the warm moist air generated within a metal building meets with the cold roof/wall surface. The moisture content of the warm air then condenses and forms condensate, which, is droplets of water. This surface condensation usually runs down the metal roof sheets until it meets with a roof support and then drips down into the building.
Condensation can be a major concern not least because it can create a slip hazard when it forms wet patches on a factory floor. It can run down into electrical fittings causing a short or even fire. Or it can ruin moisture sensitive stock.
We can resolve all these problems with our spray foam metal roof insulation.
Conventional insulation materials such as mineral wool or foam insulation boards are difficult and time consuming to install. Insulation boards need to be mechanically fixed and they butt jointed to each other, these joints allow vapour to pas through and therefore, the vapour meets with the cold roof above and forms condensation above the insulation boards which runs down and manifests itself somewhere in the building. Mineral wool batts also need mechanical fixing and they offer no barrier to vapour drive, so condensation forms and then the mineral wool becomes saturated causing it to sag and rendering the insulation useless.
Green Insulation’s closed cell spray foam insulation combats these problems because the two-component foam is sprayed directly on to the internal surfaces of the roof and walls and it immediately follows the profile of the metal and bonds to it with no gaps or joints, therefore, vapour does not reach the metal surface and it cannot condense. Our spray foam metal roof insulation does not require any mechanical fixings; it is simply and quickly sprayed on by our expert sprayers and forms a completely seamless insulating layer to the internal surfaces.
A single skin metal roof has a U value of 7.14W/m2/K, that means it is extremely poor at preventing heat loss. However, after we spray 40mm our closed cell foam insulation to the surface of the roof the U value is reduced to 0.5W/m2/K, which reduces heat loss by over 90%.
In some instances it is not possible to access the internal surfaces of the building because of machinery, racking and immoveable obstructions or because of the working hours within the building. In these cases we can apply our metal roof insulation system to the external surface of the roof.
Green Insulation’s foam and coating system is ideal for theses situations because all the work is carried out without disruption to the day-to-day operations within the building. This process is a two-coat system, we first of all spray foam to the metal surface, which expands into all the joints and forms a completely seamless flashing to the roof. Then the foam is coated with a liquid elastomeric coating, which protects the foam from UV degradation and forms a weatherproof insulated roof. So as well as insulating the roof it also prevents leaks and corrosion.
Here are some reasons to employ our services to install steel roof insulation:
Employee comfort: Without insulation working conditions can be very cold, damp and uncomfortable. Metal roof insulation creates a more pleasant working environment.
Employee safety: Our spray foam insulation will prevent condensation from dripping on to floors, machinery and electrical fixtures. Therefore, preventing injury caused by slips, falls or burns etc.
Reduced Heating Costs: During the cold months your heating bills are probably very high, but installing our sprayed roof insulation can significantly reduce these costs.
Why not invite us to carry out a free survey on your commercial building to see how we can improve your environment and save you money.