Flat roof systems are designed to last for decades when they are installed correctly. However, one issue that many property owners in Northeastern Pennsylvania don’t notice until it becomes obvious is fastener telegraphing. This is a unique problem that can affect EPDM rubber roofing systems, especially on older buildings. While it doesn’t always mean the roof has failed, it is something that should be inspected before it leads to expensive repairs.
At The Flat Roof Guys, we frequently inspect commercial and residential flat roofs throughout Wilkes-Barre, Scranton, Hazleton, Bloomsburg, and surrounding NEPA communities. Understanding what causes fastener telegraphing can help you protect your investment.
What Is Fastener Telegraphing?
Most flat roofs are mechanically attached to the roof deck using specialized fasteners and plates. After the insulation and EPDM rubber membrane are installed, these fasteners remain hidden beneath the roofing material.
Over time, temperature changes, building movement, and seasonal expansion and contraction can cause the outline of these fasteners to become visible through the membrane. This is known as telegraphing.
The small circular impressions or raised spots may look alarming, but they are not always an indication of a roof leak.
Why Does It Happen?
Northeastern Pennsylvania experiences dramatic weather swings throughout the year. Summer heat, freezing winters, heavy snow loads, and frequent freeze-thaw cycles all place stress on roofing systems.
Common causes include:
- Years of thermal expansion and contraction
- Minor movement of the building structure
- Compression of insulation beneath the membrane
- Aging roofing materials
- Improper fastening patterns during the original installation
As roofing materials age, these small imperfections become more noticeable.
Is It Dangerous?
Not necessarily.
Many roofs continue performing well even after some fastener telegraphing appears. However, if left unchecked, the raised areas can eventually create additional stress on the rubber membrane.
Over many years, this repeated movement may contribute to:
- Membrane wear
- Small punctures
- Seam stress
- Water infiltration if the membrane becomes damaged
The only way to know whether telegraphing is cosmetic or a developing problem is through a professional inspection.
What Should You Do?
If you’ve noticed bumps, circles, or raised areas across your flat roof, avoid making assumptions.
Walking on these areas incorrectly can actually cause damage. Instead, schedule a professional inspection so the roofing system can be evaluated.
At The Flat Roof Guys, we inspect:
- EPDM rubber roofs
- Commercial flat roofs
- Residential low-slope roofs
- Apartment buildings
- Industrial facilities
- Churches and schools
Our experienced team can determine whether the roof simply shows signs of age or if repairs are recommended.
Preventing Future Problems
Proper installation makes a tremendous difference in how a flat roof ages.
Using the correct fastening pattern, quality insulation, premium EPDM materials, and professional installation techniques helps minimize future movement and extends the life of the roofing system.
Routine inspections every few years also allow small concerns to be addressed before they become costly repairs.
Trust The Flat Roof Guys
If your flat roof has developed unusual bumps or visible fastener patterns, don’t ignore them. An experienced inspection can determine whether the roof simply needs monitoring or requires repairs to prevent future leaks.
The Flat Roof Guys specializes in EPDM rubber roofing, flat roof repair, and flat roof replacement throughout Northeastern Pennsylvania. If you have concerns about the condition of your flat roof, contact our team today for an honest evaluation.
The Flat Roof Guys
Website: www.theflatroofguys.com
Phone: (570) 332-1223
Email: office@theroofrepairguys.com
