Roofing in Khomasdal

Khomasdal roofs read as one generation of building rather than a mix. Most of the original houses went up under corrugated or IBR sheeting of broadly the same age and gauge, fixed the same way, so when one street-facing roof starts shedding washers the neighbouring ones are usually a season or two behind. That predictability is useful: an assessment here is less about finding a surprise and more about working out how far along a known sequence a particular roof has travelled.

What separates Khomasdal from Katutura is the amount of later building attached to the original house. Carports, closed-in stoeps, back rooms and workshops were added over decades, each with whatever sheeting was available at the time. The result is roofs that are half original and half newer material, meeting at junctions that were rarely detailed as carefully as the first roof was.

The failure everyone recognises is rust marching along the screw line. Water sits in the dish of an aged washer, the coating breaks at the pierce point, and the corrosion spreads sideways through the crest rather than downward. By the time it is visible from the ground the sheet is compromised along a whole row, not at one hole, and a fresh washer simply seals a sheet that has already lost its section.

That is where the honest call sits. Against an Olympia roof, where the sheeting is generally sound and the money goes into flashings and leak tracing, Khomasdal work more often reaches the point where re-sheeting a single bay costs less over five years than a third round of fixings across the same area. We will say when a roof is still worth patching and when it is not, and we quote the bay rather than pushing the whole roof.