Spray foam polyurethane insulation is widely used to eliminate and prevent condensation problems on metal roofs, metal walls, asbestos and fibre cement roofs and walls, as well as a host of other common construction surfaces. As the foam is spray applied it will provide a monolithic layer of thermal insulation which is adhered directly to the surface of the substrate, rather than using boards or quilts which inherently have distance between the insulation and the substrate when used on profiled sheeting.
Many metal and asbestos/fibre cement roofs suffer from condensation problems particularly during the colder months, this is especially the case where the metal is only ‘single skin’. These metal surfaces transfer the temperature from one side to the other much more easily than composite sheets, therefore when the outside of the roof has frost on it the inside will be at a very similar temperature. When the roof is cold even a small amount of heat on the inside will condense on the interior surface, this is when drips will occur and stock, machinery and employees can be damaged.
Spray foam can solve these problems quickly and easily, with the minimum of mess and disruption for you. The foam is spray applied directly to the surface which provides a complete layer of insulation, even on profile sheets and behind metal trusses. When the interior surface of the metal is insulated, the colder temperature of the exterior surface is kept away from the interior and the ‘dew point’ of the roof is transferred to the outside.
This means that the interior surface of the metal is at a similar temperature to the interior of the building, and therefore any heat and moisture will not condense on the surface. As the foam is applied directly to the surface there are no gaps or joints in the insulation for the heat to escape, this prevents condensation forming and dripping into the interior.
Foam insulation is used on a wide variety of buildings and surfaces, including:
- Metal roofs and walls
- Asbestos/Fibre-cement roofs and walls
- Storage facilities
- Cow Sheds
- Chicken Sheds
- Potato Stores
As well as a host of other building applications
Spray foam insulation is a similar material to the insulation inside composite panels, this works in the same way by keeping the inside temperature of the metal similar to the interior of the building. Using spray foam is a much quicker, easier and more cost effective way of preventing condensation in older buildings, compared to re-roofing in composite panels. Spray foam is also much more effective than other methods of insulating profiled sheets; when using boards or fibre glass there will always be joints in the insulation no matter how well sealed they are, these joints are essentially weak spots in the insulation for heat and moisture to escape through. As the boards or fibre glass are not directly adhered to the surface, as the surface has peaks and troughs which the boards cannot adhere to, there is the colder surface area available for condensation to form. Spray foam insulation does not have these inherent weak spots, allowing us to guarantee that our insulation will prevent condensation in the future.
We provide all customers with a 25 Year Manufacturer’s Guarantee on all insulation and anti-condensation work carried out to our specifications.
For more information on how we can help eliminate your condensation problem please give us a call.