The Ultimate Roof Inspection Checklist for Commercial Properties 🏢

Whether you manage a retail unit, industrial facility, or multi-storey office block, one thing is certain: a neglected roof will cost you. Regular roof inspections are your first line of defence against leaks, structural damage, and even business downtime.

In the UK — where heavy rain, strong winds, and frosty winters are the norm — commercial properties need robust, year-round inspection routines. Here’s your comprehensive checklist to help maintain safety, compliance, and building performance.

🔎 Exterior Roof Inspection: What to Look For

✔️ Roof Covering

• Check for cracks, punctures, blistering, or missing materials (tiles, membranes, panels).

• Inspect for pooling water on flat roofs — a sign of poor drainage or structural issues.

• Look for UV damage or colour fading, which can indicate long-term exposure and material fatigue.

✔️ Flashings and Seals

• Examine metal flashings around chimneys, vents, and skylights.

• Loose or corroded flashings are one of the most common causes of leaks.

• Check all joints and seams for signs of uplift or deterioration.

✔️ Gutters, Downpipes, and Roof Drains

• Clear leaves, moss, and debris that cause blockages.

• Inspect for signs of rust, standing water, sagging brackets, or misaligned pipework.

• Conduct water-flow tests to ensure downpipes aren’t obstructed.

✔️ Roof Penetrations (HVAC, Vents, Ductwork)

• Check that seals around all roof-mounted equipment are watertight.

• Inspect flashing boots and collars for signs of cracking or shrinkage.

• Ensure all hardware is securely fixed to avoid movement or uplift in storms.

✔️ Parapet Walls and Edge Details

• Examine coping stones or metal caps for cracks, gaps, or loose fittings.

• Ensure waterproofing continues around corners and at height transitions.

🏠 Interior Roof and Ceiling Checks

✔️ Ceilings and Upper Floors

• Look for water stains, peeling paint, or bubbling plaster — clear signs of roof leaks.

• Musty smells or visible mould can indicate a long-standing moisture issue.

✔️ Attic or Void Spaces

• Inspect insulation for waterlogging or mildew.

• Ensure there’s adequate ventilation to prevent condensation buildup.

• Look for daylight through the roof deck — a red flag for gaps or punctures.

✔️ Structural Components

• Check timber joists, steel beams, or decking for bowing, rust, or rot.

• Any signs of sagging may suggest long-term water damage or compromised supports.

⚠️ Health & Safety Considerations (Always Non-Negotiable)

Roof inspections — even those performed from the ground — involve risk. Ensure these essentials are followed:

• Only trained personnel should access roofs.

• Use safety harnesses, edge protection, and mobile platforms.

• Never inspect during high winds, storms, or icy conditions.

• Carry out risk assessments in line with HSE guidelines before any work.

• Wear PPE: hard hats, gloves, high-grip footwear, and eye protection.

📅 When Should You Inspect?

• Biannual Inspections: Spring and autumn are ideal times to catch seasonal issues.

• After Extreme Weather: Storms, heavy rain, or snow can cause immediate damage.

• Before Lease Renewals or Sales: Inspections support negotiations and due diligence.

• Pre- and Post-Construction: If renovations or equipment installations are involved.

📸 Record-Keeping & Documentation

A good inspection is only as valuable as its record. Be sure to:

• Keep a digital log of inspection dates, issues found, and actions taken.

• Include photographs with timestamps for insurance and legal use.

• Track repair histories and contractor visits for each building section.

🔧 Why Hire Total Cladding and Roofing?

Our nationwide team of commercial roofing experts carries out detailed, HSE-compliant inspections using drones, thermal imaging, and hands-on assessments. From flat membrane roofs to pitched metal panels, we identify issues early — before they cost you.

Get in touch today to book your next inspection or arrange a tailored maintenance plan.