Waterproofing & Construction Repair in Namibia

Both work when matched to the roof. Torch-on membrane (Y904/Y914) is the durable answer for large flat concrete roofs and parapets — a professionally applied bituminous sheet that shrugs off UV and ponding for years. Rubberised bitumen coatings like Rubber Seal suit smaller roofs, flashings and maintenance recoats, and go on by brush or roller without flame. The Namibian failure mode is UV embrittlement, not constant rain — whichever you choose, the silver or protective topcoat is not optional decoration, it is the UV shield.

Elast-O-Crete P8J is a two-part (A&B) cementitious coating — highly elastic, crack-bridging, UV-stable and tropical-grade, per the catalogue. Use it where bitumen is wrong: potable-water tanks, bathrooms and showers before tiling, planters, retaining walls and ponds, and anywhere you need a coating that stays bonded to damp concrete and moves with hairline cracking. It comes as a 15 kg kit; mix only what you can apply within pot life, and apply two coats crosswise.

Cream D is the product for this: a single-pack cream injected or applied into a drilled course of the wall, where it forms a water barrier against rising and penetrating damp — no cutting out the damp course. Drill, fill, and allow the wall to dry out over weeks before replastering with a breathable finish. It is particularly relevant to older Windhoek buildings and coastal properties where salt-laden damp climbs the plaster; pair it with a salt-resistant replaster or the damp simply reappears as blistering paint.

Rockbreak is a non-explosive demolition agent: poured into drilled holes, it expands with enormous pressure over hours and cracks rock or reinforced concrete silently. For boulder removal on a plot, cutting a trench through rock where explosives are impossible, or demolishing a foundation next to an occupied building, it replaces blasting entirely — no licence, no vibration, no flying rock. Drill pattern and hole diameter determine success, so ask for the guidance sheet; and never look into a charged hole while it works.