What is the expected lifespan of a commercial roofing membrane?

TPO and EPDM systems typically last twenty to thirty years with proper maintenance, while modified bitumen can exceed twenty-five years depending on exposure and roof traffic—actual lifespan depends on installation quality and climate stress.

How does winter weather in Sioux Falls affect roofing installation?

Most membrane systems require temperatures above freezing for proper adhesion and sealing, so installations are typically scheduled between late spring and early fall when conditions allow materials to cure correctly.

What causes ponding water on flat roofs?

Insufficient slope, sagging roof decks, or clogged drains prevent water from reaching scuppers or downspouts—addressing these issues during installation prevents long-term membrane degradation from standing water.

How is the roof attached to the building structure?

Mechanically fastened systems use plates and screws through the membrane into the deck, while fully adhered systems use adhesive across the entire surface—choice depends on wind load requirements and deck type.

What maintenance does a new commercial roof need?

Regular inspections after storms, clearing debris from drains, and resealing penetrations as needed extend membrane life and prevent small issues from becoming leaks that require emergency repairs.

Commercial Industrial Roofing

Flat and low-slope roofs on commercial buildings don't drain like residential pitched roofs—they rely on membrane integrity and proper slope to prevent ponding water, which accelerates deterioration and leads to leaks. When seams fail, flashing pulls away, or the membrane cracks from freeze-thaw cycling, interior damage follows quickly. AB Insulation, LLC installs TPO, EPDM, and modified bitumen roofing systems on warehouses, office buildings, and industrial facilities in Sioux Falls, where winter ice expansion and summer heat cycles stress roofing materials year-round.

Installation involves removing the existing membrane if replacement is needed, inspecting and repairing the roof deck, then installing new underlayment, insulation layers, and the final roofing membrane with mechanically fastened or fully adhered seams. Proper drainage design prevents water from pooling in low spots, and flashing details around HVAC units, vents, and parapet walls are sealed to prevent the most common leak points.

Request a roof inspection to assess membrane condition and determine whether repair or full replacement is the most cost-effective approach.

The process starts with a detailed roof survey measuring slope, identifying drainage problems, and documenting penetrations that will need custom flashing. Membrane selection depends on building use, budget, and expected lifespan—TPO offers heat-reflective properties that reduce cooling loads, while EPDM provides flexibility in cold temperatures and resists punctures in high-traffic roof areas. Modified bitumen works well for roofs with equipment traffic or where torch-down application is preferred over mechanical fastening.

Once installation is complete, building owners see a watertight roof with no interior staining, no emergency leak calls during storms, and predictable maintenance intervals instead of constant patching. Reflective membranes noticeably reduce summer heat gain, which translates to lower HVAC runtime and extended equipment life. The roof becomes a controlled asset rather than a recurring problem.

This work doesn't include structural reinforcement if the roof deck is damaged beyond surface repairs, though decking issues are identified during the initial inspection. Buildings with multiple rooftop HVAC units may also need curb modifications or equipment relocation to ensure proper membrane installation around each penetration.

What is the expected lifespan of a commercial roofing membrane?
TPO and EPDM systems typically last twenty to thirty years with proper maintenance, while modified bitumen can exceed twenty-five years depending on exposure and roof traffic—actual lifespan depends on installation quality and climate stress.
How does winter weather in Sioux Falls affect roofing installation?
Most membrane systems require temperatures above freezing for proper adhesion and sealing, so installations are typically scheduled between late spring and early fall when conditions allow materials to cure correctly.
What causes ponding water on flat roofs?
Insufficient slope, sagging roof decks, or clogged drains prevent water from reaching scuppers or downspouts—addressing these issues during installation prevents long-term membrane degradation from standing water.
How is the roof attached to the building structure?
Mechanically fastened systems use plates and screws through the membrane into the deck, while fully adhered systems use adhesive across the entire surface—choice depends on wind load requirements and deck type.
What maintenance does a new commercial roof need?
Regular inspections after storms, clearing debris from drains, and resealing penetrations as needed extend membrane life and prevent small issues from becoming leaks that require emergency repairs.

Roofs Built for Decades of Weather