Why Yearly Maintenance on Your Low-Slope Roof is Essential
(And What to Look For)
If you own or manage a building with a flat or low-slope roof, annual maintenance is critical.
These types of roofs are common in commercial, industrial, and even modern residential buildings,
but they require regular inspections to prevent leaks and expensive repairs.
At Roof Rite Exteriors, we specialize in low-slope roofing systems, and we’ve seen firsthand how
small problems can quickly spiral into major damage when left unchecked.
Below, we break down why yearly inspections are necessary, what problems to look for, and how
to protect your investment, whether you have a TPO, EPDM, or metal roof.
Why Low-Slope Roofs Need Special Attention
Because low-slope roofs don’t shed water as quickly as pitched roofs, they are more vulnerable to:
- Standing water (ponding)
- Membrane failure or seam separation
- Clogged roof drains
- Flashing and curb detail issues
- Rust and fastener problems (on metal systems)
These issues can lead to leaks, mold, structural rot, and costly repairs, especially if they’re not caught early.
Key Items to Check During Your Yearly Low-Slope Roof Maintenance
Inspect Seams on EPDM and TPO Membranes
Single-ply membrane roofs like EPDM (rubber) and TPO (thermoplastic) rely on sealed seams to stay watertight.
Over time, UV rays, temperature swings, and building movement can compromise those seams.
- EPDM: Look for seam peeling, shrinkage, or cracks
- TPO: Check for heat-weld failures or separation
- Watch for wrinkles, blisters, or visible gaps
These issues are often repairable if caught early, helping you avoid interior leaks or full roof replacement.
Clear Roof Drains and Scuppers
One of the most common failure points on low-slope roofs is poor drainage.
Clogged roof drains can lead to ponding water, which accelerates membrane wear and can even cause structural damage.
- Clean out drains, scuppers, and gutters
- Check for standing water or signs of past ponding
- Ensure all water exits the roof quickly and efficiently
Inspect Flashings and Curb Details
Flashings are used around roof penetrations, like HVAC curbs, vents, or parapet walls, and are critical for waterproofing.
- Look for cracks, separation, or lifting around flashings
- Check curb details for gaps or deteriorated sealant
- Inspect penetrations where pipes, conduits, or units enter the roof
These areas are high-risk for leaks, especially in freeze/thaw climates or where HVAC units are regularly serviced.
Check for Membrane Damage or Punctures
Low-slope roofs often serve as workspaces for HVAC techs or maintenance crews, which increases the risk of punctures or wear.
- Inspect for tears, cuts, or worn membrane areas
- Use walk pads in high-traffic areas to prevent future damage
Don’t Forget Low-Slope Metal Roofs
Not all low-slope roofs are covered in membrane; many buildings have low-slope metal roofing,
which comes with its own unique maintenance needs.
Exposed Fasteners & Neoprene Washers
Low-slope metal roofs often use exposed fasteners with neoprene washers to create a watertight seal.
Over time, neoprene washers dry out, crack, or split. Fasteners can back out or rust, leaving holes for water to enter.
Exposed fasteners are one of the most common causes of leaks on metal roofs and should be inspected yearly.
Flashing & HVAC Penetrations
Metal roofs are also vulnerable at flashing points and penetrations, just as membrane systems are.
- Check all wall flashings, pipe boots, and curb flashings
- Look for deterioration of sealants or failed gaskets
- Inspect HVAC lines that may rub, vibrate, or allow water to enter
Rust & Corrosion
Metal panels may develop rust, especially near cut edges, fasteners, or where debris holds moisture.
Look for surface rust or corrosion along seams and panels, and treat early to prevent spreading.
Document and Track Maintenance Over Time
A yearly inspection is only as good as your records!
Consistent documentation helps you:
- Track aging or recurring issues
- Provide proof for insurance claims and warranties
- Plan ahead for repairs or budget for a roof replacement
Prevent Costly Damage: Schedule Your Annual Roof Inspection
Your low-slope roof is one of the most important components protecting your building,
but it’s also one of the most commonly neglected.
At Roof Rite Exteriors, we offer comprehensive yearly maintenance programs for low-slope roofs, including:
- EPDM and TPO seam inspection and repairs
- Drain cleaning and drainage checks
- Flashing and penetration sealing
- Low-slope metal roof fastener and rust inspection
- Full maintenance reports with photos and recommendations
Call us today to schedule your annual roof inspection, or request a quote online.
A little prevention now can save you thousands later!