Is Your Steel Sheet Carports Ready for Summer Storms? Here’s What to Check
The first serious summer down pour often reveals a problem that has been developing quietly for months. A ceiling stain appears, a gutter overflows or a roof sheet starts rattling in the wind. By then, the rain has already arrived and repair work can be much harder to arrange.
For South African property owners, November is a sensible time to pay attention to the roof. A practical inspection can help identify visible wear, drainage problems and damaged components before the next storm. Here is what to look for, what different roofing products do and when to involve a professional.
Illustration: Metal roofing systems face wind, rain and repeated seasonal exposure.
Start safely: What can you see from the ground?
You do not need to climb onto the roof to spot some common warning signs. From a safe place on the ground, look for visibly displaced sheets, bent edges, loose gutters, areas where water regularly spills over and obvious damage around roof penetrations. Inside the building, check ceilings for new stains, peeling paint, damp patches or evidence of previous leaks.
Roof access and work at height can be hazardous, particularly on wet, fragile or damaged sheeting. Do not walk on a roof to investigate a leak. Have a suitably trained roofing professional assess and repair anything that requires access, fall protection or specialist equipment.
1. Look closely at the roof sheeting
Metal roofing sheets come in different profiles, materials, thicknesses and finishes. Corrugated sheeting has a familiar rounded wave pattern, while IBR-style sheeting features raised ribs and wider pans. Both can be useful when correctly specified, but profiles are not automatically interchangeable.
Suitable sheeting depends on factors such as roof pitch, support spacing, sheet span, wind exposure and the supplier or manufacturer’s requirements. If a sheet is badly corroded, buckled, punctured or displaced, a roofing professional should determine whether a repair is appropriate or replacement is needed.
2. Check fasteners and sealing washers
Every fixing point matters. Correctly specified fasteners secure sheeting to the supporting structure, and appropriate sealing washers help reduce water entry where required. Over time, washers can deteriorate or fixings may become loose or damaged. Wind exposure can make poorly secured sheets a particular concern.
Do not assume a leaking fixing should simply be tightened harder. Overtightening can damage the washer or deform sheeting. A roofing professional can identify the correct replacement fastener and installation method for the roof system.
ASAP Steel & Pipe | www.asapsteel.co.za | 011 907 6620 ASAP STEEL & PIPE | NOVEMBER 2026 KNOWLEDGE HUB
3. Pay attention to flashings, ridges and penetrations
A roof is not just a collection of sheets. Ridge caps, sidewall flashings, barge details and sealed openings around vents or pipes all help guide water away from vulnerable joints. If these components are loose, poorly fitted or damaged, water may find a route into the building even when the sheets themselves are in good condition.
Look for stains or leaks that appear near joins, chimneys, vents or changes in roof level. The source of a leak is not always directly above the interior stain, because water can travel along structural components before it becomes visible.
4. Make sure rainwater has somewhere to go
Blocked gutters and downpipes can cause water to overflow onto walls, fascias and entrances. Leaves, debris and storm residue can build up quickly, especially around trees. Drainage should be inspected and cleaned safely, with professional help where access is difficult.
Also look at where the water ends up. Downpipes that discharge against foundations or onto busy walkways can create problems away from the roof. Effective drainage forms part of the building’s overall weather protection.
Four key areas to investigate before summer rainfall intensifies.
5. Watch for corrosion and damaged coatings
Metal roof sheeting is often supplied with protective metallic or painted finishes. Their performance depends on the exact product and the exposure conditions. Corrosion may begin at scratches, cut edges, damaged fixing points or areas where debris and water collect.
Small stains are not always signs of serious damage, but they are worth investigating. A professional can assess the condition of the sheets and advise whether a coating repair or sheet replacement is suitable. Do not paint over corrosion without addressing its cause and preparing the surface correctly.
Roofing choices: What should you ask before purchasing?
● Which roof profile is compatible with the existing structure and pitch?
● What sheet thickness, material and protective finish does the design require?
● What supports, fixing pattern and fasteners does the manufacturer specify?
● Which ridge caps, flashings and accessories are needed to complete the installation?
● Is the building in a high-wind, coastal or otherwise aggressive environment?
For new roofs and substantial alterations, product selection should follow a suitable design and the manufacturer’s installation guidance. Load capacity, wind uplift and support spacing are not details to guess from appearance.
ASAP Steel & Pipe | www.asapsteel.co.za | 011 907 6620 ASAP STEEL & PIPE | NOVEMBER 2026 KNOWLEDGE HUB
A simple routine after heavy rain
When conditions are safe, inspect the building from ground level. Look for fresh water marks on ceilings, overflowing gutters, displaced sheets and debris. Record concerns with photographs and arrange professional attention if there is evidence of damage. Small changes can be easier to assess when you have a record of how the area looked previously.
When should you call a professional?
Seek prompt professional assistance if a roof sheet is lifting, an active leak is affecting electrics or ceilings, the structure is sagging, corrosion appears extensive, or roof access is required. If a leak is close to electrical fittings, keep clear and arrange appropriate electrical and roofing assistance. Do not attempt to secure loose roof sheets during a storm.
The bottom line
A summer-ready roof is the result of more than having the right sheets. Fixings, flashings, drainage, compatible materials and regular inspection all matter. Identifying concerns while the weather is clear gives you more options than discovering them during a downpour.
Planning your next project?
If you are replacing roof sheeting or planning a new roofing project, ask ASAP Steel & Pipe about available roofing materials and related steel products.
Speak to the ASAP Steel & Pipe team about the materials and product options suitable for your project. Visit www.asapsteel.co.za or phone 011 907 6620.
ASAP Steel & Pipe | www.asapsteel.co.za | 011 907 6620