The Complete Guide of Spray On Roofing

Spray on roofing, also known as spray polyurethane foam (SPF), is a relatively new method of roofing that has become increasingly popular in recent years. It is a unique roofing system that involves spraying a mixture of liquid chemicals onto an existing roof to create a seamless and durable roofing membrane. Here is a complete guide to spray on roofing, including its benefits, how it is installed, and maintenance tips.

What is Spray on Roofing?

Spray on roofing involves spraying a mixture of liquid chemicals onto an existing roof. The mixture creates a seamless roofing membrane that is lightweight, durable, and highly energy-efficient. The primary chemical used in spray on roofing is polyurethane foam, a mixture of isocyanate and polyol. This mixture is sprayed in liquid form onto the roof and quickly hardens to form a rigid foam insulation layer.

Benefits of Spray on Roofing

1. Energy Efficiency

Spray on roofing is highly energy-efficient compared to traditional roofing systems. The insulating capabilities of the roofing membrane can significantly reduce your energy bills by keeping heat in during the winter and out during the summer.

2. Seamless and Durable

Spray on roofing creates a seamless and durable roofing membrane that is resistant to leaks, cracks, and deterioration caused by the elements. It provides a strong and reliable roofing system that can last for years without needing costly repairs or maintenance.

3. Suitable for All Roof Types

Spray on roofing is suitable for all types of roofing systems, from flat roofs to sloped roofs with unusual shapes and angles. This makes it a versatile option for both commercial and residential building owners.

4. Environmentally Friendly

Spray on roofing is an environmentally friendly option compared to traditional roofing systems. The insulation properties of the roofing membrane can reduce your energy consumption, leading to a decrease in the carbon footprint of your building.

5. Cost Savings

Spray on roofing can save you money in the long run by reducing your energy bills and requiring minimal maintenance. Additionally, the installation process is fast and requires minimal labor, leading to cost savings on installation fees.

How is Spray on Roofing Installed?

1. Preparation of the Roof

The first step in spray on roofing is the preparation of the roof. This involves cleaning the existing roof surface to remove any debris and repairing any damage or leaks. The surface should be dry and free of any moisture before the spray on roofing process begins.

2. Application of the SPF Mixture

The second step is the application of the SPF mixture. A spray gun is used to apply the mixture onto the roof surface. The mixture comes in two components – isocyanate and polyol – which are mixed together before application. The mixture expands rapidly and fills any gaps and cracks in the existing roof surface.

3. Final Coating

After the SPF mixture has been applied, a final coating is sprayed over the roof surface. The final coating serves as a protective layer that prevents UV damage and provides additional insulation.

4. Finishing Touches

Once the final coating has been applied, the spray on roofing process is complete. The roofing membrane will gradually harden over time, creating a strong and durable roofing system.

Maintenance Tips for Spray on Roofing

1. Regular Inspections

Regular inspections are crucial to the maintenance of spray on roofing. Inspections should be done at least twice a year, in the spring and fall. The roof should be inspected for any cracks, punctures, or other signs of damage. Any repairs should be done immediately to prevent leaks.

2. Clean the Roof

The roof surface should be cleaned regularly to remove any debris, such as leaves, branches, or standing water. Debris left on the roof surface can lead to decay and damage over time.

3. Keep Trees and Branches Trimmed

Trees and branches that overhang the roof surface should be trimmed regularly to prevent damage from falling branches or leaves.

4. Hire a Professional for Repairs

Any repairs or maintenance on your spray on roofing system should be done by a professional roofing contractor with experience in spray on roofing.

Final Thoughts

Spray on roofing is a highly effective and energy-efficient roofing system that offers many benefits compared to traditional roofing systems. The installation process is straightforward and requires minimal labor, leading to cost savings. Regular maintenance, including inspections and cleaning, is crucial to ensuring the durability and longevity of the roofing membrane. With proper maintenance and care, spray on roofing can provide a reliable and long-lasting roofing option for your building.