Agricultural buildings come in all shapes and sizes with many uses. They usually have one thing in common - corrugated metal, cement fibre or asbestos roofs.
The roof and wall substrates often condensate in winter months and the external bolts that hold roofing sheets together can degrade, allowing moisture to penetrate the building.
When an agricultural building suffers from condensation, you may be impacted financially through stock damage and liability to personnel, equipment and furniture.
For property experiencing this problem an application of 15-20mm will resolve the issue and completely eliminate all future condensation.
Over time, roofs can start to degrade where cracks may appear or the bolts and gaskets that hold roofing sheets together start to fail.
50mm of Closed-cell spray foam offers a solution which helps to stabilise the roofing sheets by bonding all joints and seams to create a single membrane.
We regularly come across such buildings where a pre-manufactured insulation, such as PIR, has been used and it’s always sad to see the costly impact when these solutions fail the test of time.
When the time comes to upgrade and replace existing insulation, a property survey will help us determine the options to create the most effective thermal envelope for the long term.
Although cost should always be considered, the insulation choice that you make is imperative in achieving optimal performance. Agricultural buildings are rarely small in size and the disruption and downtime you might experience throughout the installation makes the choice of insulation an important factor.
It’s not just the performance of spray foam, it’s the speed of application that can truly help to minimalise down-time during install and this should help form a part of any cost-benefit analysis when selecting the right option for your property.
Although we install both open and closed-cell products, not all spray foams are created equal, therefore we are always careful to respect the application uses for both products in achieving the correct install for your building.
Open Cell is a low density sponge like foam, making it an effective barrier against noise transmission and adds good thermal performance to a building.
When used in areas that are susceptible to moisture intrusion, Open Cell foam will absorb this moisture which can create issues within the building or structure it is applied to.
To overcome this, we always recommend an application of Closed Cell foam for buildings that have metal, asbestos or cement roofs. These are commonly held together by bolts and gaskets, which when rusted or broken, act as the first entry point for moisture.
Closed Cell is a high density rigid foam, that acts as a very good vapour barrier. It helps to bind all aspects of a roof substrate to prevent the degradation or loosening of bolt fixings and adds structural integrity.
As little as 25mm of Closed Cell insulation will eliminate condensation whilst an application of 50mm will provide exceptional thermal performance. Both depths offer strong adhesion to the substrate to future-proof its integrity.
Managing Director, FD Hall & Son Ltd
Compared to traditional types of insulation which are pre-manufactured and therefore need to be manually fit, spray foam is vastly superior when it comes to minimizing down time. Spray Foam is also a hassle-free, often mess-free installation process.
Our experienced team can install up to 400 square metres of surface area per day meaning that many agricultural buildings can be insulated in a fraction of the time it would take to install pre-manufactured insulation such as Rigid-PIR or Rockwool.
In any habitable space, attention should be paid to the fire rating of a product used within a building. It’s also important to check the fire rating of Spray Foam Insulation as ratings vary between manufacturers.
We always use a Class 1 fire-rated Closed Cell foam, tested to UK standards. Current building regulations state that a Class 1 fire-rated product is acceptable. Some Spray Foam manufacturers have a UK Class F rating!
When a roof is old and degrading, susceptible to leaks, we always recommend you seek an external survey to determine the severity of the situation. When you’ve got the odd hairline crack or perished bolt, Spray Foam can help to sure up the structure and mitigate leaks.
When you have a failing roof, we always recommend the use of a Closed-Cell Spray Foam which is high density and offers improved structural integrity. It’s insulation not a waterproofing solution but it will, to a degree, help to plug the gap and reduce water ingress.
During the install process, our installers wear masks and we insist our customers stay well away from the install area. Once the product has expanded and cured to its finished state, it will release no ongoing toxins and becomes completely inert.
It is important to choose a Spray Foam Installer who uses a chemical free of VOC’s and HFC’s. We only use products that have a water-based blowing agent and our own ThermoFoam has a low Global Warming Potential of just 1, making it environmentally friendly.