When a flat roof starts leaking, it’s understandable to want a quick solution. Many homeowners and business owners immediately think about covering the damaged area with a tarp. While a tarp may seem like an inexpensive way to keep water out, it’s rarely the right answer for an EPDM rubber roof or other flat roofing system.
At The Flat Roof Guys, we’ve repaired countless flat roofs throughout Northeastern Pennsylvania where a temporary tarp actually made the damage worse. Here’s why relying on a tarp can end up costing you more in the long run.
Water Can Still Find Its Way In
Unlike a steep shingle roof, a flat roof doesn’t quickly shed water. Rainwater naturally sits on the surface until it drains away. If a tarp isn’t perfectly sealed—which is nearly impossible—it allows water to work underneath it. Once water gets trapped beneath the tarp, it often spreads farther across the roof before entering the building.
Tarps Trap Moisture
Flat roofs need to dry out after rain. A tarp prevents proper airflow and traps moisture against the roofing membrane. Over time, this trapped moisture can weaken adhesives, damage insulation, and contribute to mold growth beneath the roofing system.
Wind Can Turn a Tarp Into a Sail
Flat roofs are especially exposed to high winds. A tarp that isn’t professionally secured can billow in the wind, placing tremendous stress on the roofing membrane. It can pull at seams, loosen flashing, or even tear the rubber membrane itself, creating more repairs than the original leak.
Walking on a Damaged Flat Roof Is Risky
Installing a tarp usually means walking directly over the damaged area. On an aging EPDM roof, this extra foot traffic can enlarge punctures, separate seams, or damage areas that were previously watertight. What may have started as a small repair can quickly become a much larger project.
Temporary Fixes Delay Permanent Repairs
One of the biggest problems with tarps is that they create a false sense of security. Many property owners assume the leak has been solved, only to discover weeks later that water has continued entering the roof system. By then, insulation may be saturated, decking may be damaged, and interior repairs may also be necessary.
Professional Emergency Leak Protection
There are times when emergency weather protection is appropriate, especially after severe storms. Professional roofing contractors use materials and techniques specifically designed to protect flat roofs while minimizing additional damage. More importantly, they locate the actual source of the leak and recommend the proper repair—not just cover it up.
Protect Your Flat Roof Investment
Your flat roof is a major investment. Whether it’s protecting your home, warehouse, office, restaurant, or retail building, it deserves a professional repair rather than a temporary cover.
At The Flat Roof Guys, we specialize in EPDM rubber roof repairs, leak detection, preventative maintenance, and complete flat roof replacements throughout Wilkes-Barre, Scranton, Hazleton, Bloomsburg, and surrounding Northeastern Pennsylvania communities.
If your flat roof is leaking, don’t trust a tarp to solve the problem. Call The Flat Roof Guys today at (570) 332-1223 or email office@theroofrepairguys.com to schedule a professional inspection and long-lasting repair
