How Long Does a Spray Foam Roof Last?

One of the first questions we get asked by property managers is “How long will a spray foam roof last?”.

The answer is that a spray foam roof will last indefinitely if you keep up with the maintenance and recoat schedule.

We have proof. One of the first spray foam roofs we ever did was at Playhouse Square in Cleveland, OH in 1972.

spray foam roof on playhouse square

Foam was sprayed over Playhouse Square’s State Theatre Auditorium Roof in Cleveland, OH 47 years ago and it’s still performing as it did year #1.

How does a spray foam last indefinitely?

So, when we install a spray foam roof, they can come in a 10, 15- or 20-year warranty.

For example, when you get a 10-year warranty, you’ll get 10 years’ worth of silicone coating overtop of the spray foam, usually 20 mils thick.

During years 1-10, we came out 2x/year to perform simple maintenance on the roof. This maintenance is recommended but not required to maintain the warranty terms. Tasks performed are:

 

  • Visual roof inspection
  • Cleaning of drain strainers and gutters
  • Cut out any defective areas, make sure they are clean and dry
  • Apply caulk/sealant to defective areas and smooth out
  • Provide a roof inspection report
  •  

But on year 11, when the warranty has run out, the original 20 mils of silicone coating, you might be down to 9 or 10 mils, maybe even less. It depends on where the roof is located at, the harshness of the weather that has occurred and the amount of foot traffic.

On year 11, there’s no need for a roof tear off. All that needs done is to pressure wash the roof, provide simple repairs and install new coating.

You also have the option of choosing a new 10, 15- or 20-year warranty, whichever works best for you.

What happens during the spray foam recoating process?

Step 1: Pressure wash the roof

Step 2: Walk the roof and fix any mechanical damages, such as blisters, holes or areas of wet foam

Step 3: Apply the new coating

How much does a recoat cost?

The average recoat will cost about 1/3 to 1/2 of the original cost of installation in today’s dollars. The cost can vary depending on distance from our locations and how much repair needs done before the recoat. Performing preventative maintenance ensures your recoat will be on the lower end of the recoat price range.

 

 Sample Lifetime Cost of a Spray Foam Roof
 
TOTAL*362,000
Sq. Ft. = 20,000
YearWork PerformedCost
1Installation in Fall 2019 ($5/sq. ft)100,000
2Maintenance in Spring and Fall (0.30/sq. ft)12,000
3Maintenance in Spring and Fall (0.30/sq. ft)12,000
4Maintenance in Spring and Fall (0.30/sq. ft)12,000
5Maintenance in Spring and Fall (0.30/sq. ft)12,000
6Maintenance in Spring and Fall (0.30/sq. ft)12,000
7Maintenance in Spring and Fall (0.30/sq. ft)12,000
8Maintenance in Spring and Fall (0.30/sq. ft)12,000
9Maintenance in Spring and Fall (0.30/sq. ft)12,000
10Maintenance in Spring and Fall (0.30/sq. ft)12,000
11Recoat ($2/sq. ft.) in Spring, Maint in Fall46,000
12Maintenance in Spring and Fall (0.30/sq. ft)12,000
13Maintenance in Spring and Fall (0.30/sq. ft)12,000
14Maintenance in Spring and Fall (0.30/sq. ft)12,000
15Maintenance in Spring and Fall (0.30/sq. ft)12,000
16Maintenance in Spring and Fall (0.30/sq. ft)12,000
17Maintenance in Spring and Fall (0.30/sq. ft)12,000
18Maintenance in Spring and Fall (0.30/sq. ft)12,000
19Maintenance in Spring and Fall (0.30/sq. ft)12,000
20Maintenance in Spring and Fall (0.30/sq. ft)12,000

*This a general cost. There can be many variables that increase/decrease this amount

The point I’m trying to make here, is that once you have a spray foam roof, it’s basically a maintenance item.

Conclusion

In short, a spray foam roof should be the last roof you ever have to put on. After initial installation, it’s basically a maintenance item that can always be under warranty.

Throw in the energy savings with having a spray foam roof and it instantly becomes a cost-effective option.

 

Download Today: The Essential SPF Roofing Guide

Author: Greg Palya

Greg Palya is the Digital Content Manager of West Roofing Systems, Inc. He has a B.S. in Marketing from the University of Akron and an MBA in Marketing from Walsh University. When he’s not trying to increase website traffic, you can find him on the basketball court or golf course.
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