Commercial Roof Inspection Checklist for Property Owners

Why a Checklist Helps Building Owners

Commercial roofs often fail slowly until a leak becomes urgent. A simple inspection checklist helps facility managers and property owners catch drainage, membrane, and flashing problems before they turn into interior damage.

This checklist is a planning tool — not a substitute for a professional roof assessment.

Before You Go On the Roof

• Confirm safe access and fall-protection requirements
• Review recent leak reports and repair tickets
• Gather roof age, system type, and prior project notes if available
• Check weather conditions and footwear safety
• Bring a camera to document current conditions

Exterior Roof Surface Checklist

Drains and water movement

• Are drains clear of debris, leaves, and ice buildup?
• Is water ponding in the same areas after rain or melt?
• Are scuppers and overflow paths functional?
• Are gutters or downspouts connected and draining away from the building?

Membrane and field conditions

• Are seams lifting, splitting, or showing open areas?
• Is the membrane punctured, shrunken, or alligatoring?
• Are there signs of repeated patch work in the same zones?
• Is there new debris impact from storms or service equipment?

Flashings and edges

• Are wall flashings tight at parapets and transitions?
• Are HVAC curbs, pipe boots, and penetrations sealed?
• Is edge metal loose, bent, or missing fasteners?
• Are coping caps secure and draining properly?

Roof traffic and equipment

• Are walk pads missing where service traffic is heavy?
• Are HVAC panels, ducts, or supports resting on the membrane correctly?
• Are new rooftop installations properly flashed?

Interior and Building Signs

Not every problem is visible on the membrane surface. Also review:

• Ceiling stains or active drips after rain
• Musty odors or insulation concerns near the roof deck
• Bubbling paint or drywall damage on top floors
• Recent tenant complaints in the same zone repeatedly

Seasonal Notes for New Hampshire

Late winter and spring

• Ice dams and freeze-thaw stress at eaves on mixed buildings
• Clogged drains after winter debris
• Leaks that appear during melt cycles

Summer and fall

• UV aging and seam stress
• Storm debris and wind uplift at edges
• Pre-winter drain clearing and detail checks

When a Professional Inspection Makes Sense

Call a roofing professional when:

• Leaks recur in the same building area
• Ponding remains after maintenance
• You are planning a sale, refinance, or major tenant improvement
• The roof is near the end of its expected service life
• You need documentation before repair, coating, or replacement

What a Professional Assessment Can Add

A trained roofing review can help identify moisture in insulation, substrate soft spots, seam failures, and drainage corrections that are easy to miss on a quick walkthrough.