ROOFING
Spring ROOF risks by region
Jessica Conradie
Spring exposes different roofing weaknesses across South Africa. The African Federation of Roofing Contractors( AFRC) explains what property owners in Gauteng, Cape Town, and KwaZulu-Natal should inspect before seasonal storms arrive.
South Africa doesn’ t receive a single spring weather warning. Depending on where you live, your roof may face hail, strong winds, heavy rain, humidity, or coastal corrosion between September and November.
Do the checks now while conditions are dry and contractors are available. Once the first big storm hits, those emergency call-outs will become harder and more expensive to secure.
Gauteng: Hail, UV damage, and stormwater
The dry Highveld winter can expose existing weaknesses before October brings heat, thunderstorms, and hail.
Tile integrity: Concrete and clay tiles become brittle after winter UV exposure. Look for white impact marks or slipped tiles.
Metal sheeting: Check IBR and corrugated profiles for deformed ribs and loose fasteners. Wind uplift exploits weak points.
Gutters and valleys: Jacaranda blossoms, leaves, and winter dust can block outlets, causing water to back up under tiles or overflow into the ceiling.
Flashings and sealants: Inspect silicon and polyurethane sealants around chimneys, parapets, and skylights for cracking caused by prolonged UV exposure.
Homeowner action: Arrange a thorough inspection well before October. Clean gutters, replace cracked tiles, and reseal flashings. Spring is also a good time to maintain flat-roof waterproofing.
Cape Town: Wind and winter rain damage
Cape Town’ s spring brings the final winter frontal systems and the start of strong south-easterly winds.
Wind uplift: Ridge tiles and sheeting are most vulnerable in exposed coastal suburbs. Check for cracked mortar bedding and loose or missing ridge screws. Tile fixing should be assessed against SANS 10062, which requires mechanical fixing in high-wind zones.
Concealed leaks: Winter rain often enters the roof void without producing an immediate ceiling stain. Look for damp timber, rusted nails, or mould.
Corrosion: Salt-laden air within 10km of the coast accelerates rust on fasteners, valley irons, and metal flashings. Look for orange staining.
Sarking and underlay: Torn or perished sarking beneath tiles can admit wind-driven rain. This is a common failure point after a wet winter.
Homeowner action: Have defective ridge lines rebedded and repointed now. Replace corroded fasteners with stainless steel. It’ s cheaper than ceiling repair in December.
KwaZulu-Natal: Humidity, algae, and downpours
Rising humidity, thunderstorms, and yearround coastal salt create different risks.
Biological growth: Moss and algae thrive on shaded tile roofs, trapping moisture and degrading the tile surface.
Coastal corrosion: Standard protective coatings can deteriorate quickly near the sea. Check metal roofs for white rust and pinholing.
Drainage capacity: Intense thunderstorms can overwhelm undersized or blocked box gutters on complex roofs and commercial buildings.
Waterproofing: Flat concrete roofs and balconies often fail at joints and service penetrations. Humid conditions slow drying, so small leaks become big problems.
Homeowner action: Have tile roofs professionally cleaned and treated. Coastal homes need marine-grade coatings and stainless-steel fasteners. Clear and test gutters before the first storm.
The bottom line
Gauteng roofs need protection from hail and stormwater, Cape Town roofs from wind and corrosion, and KwaZulu-Natal roofs from moisture and heavy rainfall.
The common thread is timing. Spring offers a six- to eight-week window to fix small problems before they become insurance claims. Contact a qualified roofing contractor before the storms arrive.
For a list of trained professionals, email the AFRC at info @ afrc. africa.
82 spring 2026 | www. tobuild. co. za