Roof Repairs Johannesburg: Leaking Roofs, Tiles, IBR Sheets and Gutters
Johannesburg Home Repairs does roof repairs in Johannesburg on tiled, IBR and flat roofs: leaks traced and sealed, cracked tiles and ridges replaced, flashings re-fixed and gutters fitted. A 2026 national guide puts roof repair at R88 to R100 per m² of roof area, and a roof inspection of a 70 to 100 m² house at R1,000 to R1,800 excluding VAT.
Use the form below for a repair or renovation quote.
The quote follows a look at the roof and the roof space, because the drip in a room is rarely under the hole in the roof.
Roof Leak Repairs in Johannesburg: Where the Water Gets In
Water runs down a roof, along purlins and tiles, and drops where it finds a gap. A stain in the lounge can start two metres up the slope. The table lists the usual entry points and the repair each one needs.
| Entry point | What you see inside | Repair |
|---|---|---|
| Cracked or slipped concrete tile | Stain mid-ceiling, often after hail | Replace the tile and check the underlay |
| Ridge capping with cracked mortar | Damp along the line of the ridge | Lift, re-bed and point the ridge tiles |
| Flashing pulled off a wall or chimney | Damp on the wall below the junction | Re-fix or replace the flashing and seal the chase |
| Valley gutter blocked or rusted | Water in a corner where two roofs meet | Clear, re-line or replace the valley |
| IBR or corrugated sheet: loose screw, rusted lap | Drips along a straight line | Replace washers and screws, seal or replace the sheet |
| Gutter or downpipe overflowing | Damp fascia, wet wall, stained eaves | Clear, re-fall or replace gutters and downpipes |
Once the roof is sealed, a wet ceiling board is replaced under ceiling repairs and installation. A flat roof or parapet is a membrane job, not a tile job: see roof waterproofing in Johannesburg.
Roof Types on Johannesburg Houses
- Concrete tiles: the common pitched roof on face-brick and plastered houses. Tiles crack under impact and ridges lose their mortar over time.
- Clay tiles: heavier and less common, on older or higher-end houses. Matching a discontinued profile can take time.
- IBR and corrugated sheeting: outbuildings, carports, extensions and many complete roofs. Fixings, laps and rust are the weak points.
- Flat concrete roofs: modern houses and extensions with parapets. These rely on a membrane and a working outlet.
Hail cracks tiles and dents sheeting. After a hailstorm, the roof is checked from above and from the roof space, because a hairline crack lets water in long before it shows from the street.
Roof Repair and Roofing Costs in Johannesburg
| Item | Guide figure (scope, date) | Guide |
|---|---|---|
| Roof repair | R88–R100 per m² of roof area (national, 2026) | N1 |
| Roof inspection | R1,000–R1,800 for a house with 70–100 m² of roof, excluding VAT (national, 2026) | N1 |
| New roof, material and labour | R500–R1,000 per m², average R800 (national, 2026) | N1 |
| Aluminium seamless gutter | R100–R250 per metre (national, undated) | N12 |
| Gutter installation labour | R50–R100 per linear metre (national, undated) | N12 |
N1 is a 2026 national roofing cost guide; N12 is a national seamless gutter guide. No Johannesburg-only roofing guide with readable figures was found.
As arithmetic, 120 m² of new roof at N1's R500 to R1,000 per m² comes to R60,000 to R120,000 for materials and labour; stripping and disposal of an existing roof are not established by that guide rate. A leak repair on one valley or ridge is priced by the job, not by the whole roof area.
Roof Replacement: When Repairs Stop Making Sense
Repair is the default. Replacement is quoted when the same faults keep returning across the roof: tiles that crumble when walked on, sheets rusted through at many laps, or timbers that have rotted from years of leaks.
- Same material, same shape. The City of Johannesburg's plan-submission checklist lists replacing a roof, or part of it, with the same or similar material as minor building work. Section 13 of the National Building Regulations and Building Standards Act exempts it from a building plan. The checklist still asks for a motivation letter to the Building Control Officer and a sketch.
- New material or new shape. The checklist refers to replacement with the same or similar material. Ask Building Control whether the proposed material or structural change qualifies as minor work. The City's building-plans page says any alteration that changes the structure of an existing building must be approved.
Gutter Installation
Gutters carry Highveld cloudbursts off the roof and away from the walls. Undersized or sagging gutters spill water against the fascia and the foundations. Johannesburg Home Repairs fits aluminium and PVC gutters with the fall and downpipes sized to the roof area they drain.
What a Roof Repair Quote Covers
- The source of the leak, marked on photos from the roof and the roof space.
- Materials by item: tiles, ridge, flashing, screws, sheets, gutters.
- Access: ladders, roof ladders or scaffolding on double-storey houses.
- Any ceiling or cornice damage below, priced as a separate line.
Section 15 of the Consumer Protection Act applies to qualifying repair or maintenance work above the prescribed threshold, where the provider takes possession of the property or the consumer requests an estimate before supply. Where it applies and an estimate is given, extra charges require the consumer to be informed and authorise the work to continue. To book a roof inspection, request a quote.
Johannesburg Home Repairs: Questions Homeowners Ask
How much do roof repairs cost in Johannesburg?
A 2026 national roofing guide puts roof repair at R88 to R100 per m² of roof area and a roof inspection of a 70 to 100 m² house at R1,000 to R1,800 excluding VAT. A new roof, material and labour, runs R500 to R1,000 per m² in the same guide.
Why does my roof leak only in heavy storms?
Because wind-driven rain reaches gaps that normal rain does not. The usual culprits are lifted or cracked tiles, ridge mortar that has cracked away, flashings that have pulled off a wall, and valleys or gutters that overflow when they cannot carry a cloudburst.
Do I need building plans to replace my roof in Johannesburg?
Not when the roof, or part of it, is replaced with the same or similar material. The City's plan-submission checklist lists that as minor building work under section 13 of Act 103 of 1977, which still needs a motivation letter to the Building Control Officer and a sketch. Confirm with Building Control whether a proposed material or shape change meets the checklist's same-or-similar-material category or requires plans.
Should the ceiling be repaired at the same time as the roof?
Yes, but after the roof. A ceiling board that has been wet sags and stains, and fixing it below a roof that still leaks wastes the repair. The roof is sealed first, then the ceiling is replaced.
Do you repair thatch roofs?
No. Johannesburg Home Repairs works on tiled, IBR, corrugated sheet and flat concrete roofs. Thatch needs a specialist thatcher.
How much do gutters cost to install?
A national seamless gutter guide puts aluminium gutters at R100 to R250 per metre and installation labour at R50 to R100 per metre. As arithmetic, 18 m of aluminium gutter material at R100 to R250 per metre comes to R1,800 to R4,500, excluding installation labour and accessories.