All About Daily Belfast UK News

SPF vs. Built-Up Roofing

Nov 9

A flat roof is a roof that covers a business. You might imagine black tar being spread across the roof.

What's the difference between spray polyurethane foam and conventional built-up roofing?

Roofing Systems want our clients to be informed.

  • Tar- and Gravel roofing

Built-up roofing systems have been used in the United States for more than 100 years.

Spray Polyurethane Foam Roof Spray (SPF). Polyurethane foam can be sprayed on an existing roof. It expands into foam and forms a solid layer.

SPF roofing is not the most common type of roofing material. However, it has been used for roofing in commercial and industrial buildings since the 1960s.

Performance and Installation of Spray Polyurethane Foam Roof


Roof that has been installed

On average, a roof for a business will cost $5.50 to $8.50 per sq. foot in materials and labor. Prices can vary depending on the materials you choose.

SPF Roofing can be described as a roofing company.

A typical SPF roof covering a 20,000-square-foot building will cost between $4.00 and $7.00 per square foot.

Spray foam roofing is a cost-effective way to save energy over 5-10 years.


Roofing Systems installed an SPF roof at the Parma Ice Rink Building.

The initial layer can adhere directly to the roof substrate. Property managers can choose from three, four, or five-ply roofs depending on their needs and budget.

This layer is made from rock or stones and protects the layers below it from the sun's ultraviolet rays, extreme heat, or cold. First, clean the roof with a pressure washer of 3500 PSI.

The contractor will not remove the entire roof. will clean the substrate of all dirt and other pollutants.

The contractor will lay the first layer of polyurethane foam. After the SPF layer has dried completely, you can coat it with an acrylic or elastomeric silicone coating with embedded grains.


A commercial-built-up roof can last for up to 40-years if it is properly maintained. Other benefits of built-up roofing systems include

  • Waterproof and seamless -- The continuous, solid surface is water-resistant and has no joints or seams. This prevents leaks in the most vulnerable areas.

  • UV Rays Are Reflected -- UV protection available.

  • Low Maintenance -- After installation, very little maintenance is needed.

More information can be found at the Asphalt Roofing Manufacturers Association.

SPF Roofing can be described as a roofing company.

A business spray foam roof can last many years if it is properly maintained and installed.

  • SPF provides thermal, air, and moisture barriers. It has the highest R-value at 6.6/sq inch.

  • Durable -- The foam material is flexible and can expand or contract during construction. SPF is strong enough to be used for walking.

  • Waterproof and seamless -- The continuous, solid surface is water-resistant and has no joints or seams. This prevents leakage at the most vulnerable areas.

  • It's environmentally friendly - SPF roofing materials can be used on most roofs. They are extremely low in global warming potential and have no ozone depletion potential (ODP), the volatile organic compound (VOC), or chlorofluorocarbons.

  • It's easy to fix -- Find areas that need attention and clean them up. Next, apply a coating to the crack. Finish by smoothing the surface.

  • Installation is quick - Only saturated areas need to be removed and replaced during installation. This saves money and time.

  • Water cannot travel laterally. Water can't travel laterally.

There are some disadvantages

While built-up roofing systems have a reputation for being durable, they are also susceptible to damage.

  • Installation may take longer.

  • When it is installed, it can release dangerous gases and vapors.

  • Weight – This raises the structural weight of a structure.

  • Installation Costs - A spray foam roof will cost more than a traditional roof.

  • UV Rays - UV rays that are not filtered through the top layer of gravel can rapidly degrade the membrane.

  • A roof that's full of stones and gravel can be difficult to locate leaks.

  • Allows water to migrate laterally Water can move laterally through insulation, causing many leaks throughout buildings.