"How much does waterproofing cost?" is one of the questions we're asked most often, and it's a fair one to ask — but there's no single per-square-metre figure that applies across every project. Waterproofing cost in Botswana depends on a handful of factors that can shift the price significantly from one job to the next. Here's what actually drives it.
Why There's No Single "Price Per Square Metre"
Two roofs of the same size can cost very different amounts to waterproof, because the system required, the condition of the substrate, and the complexity of the area all vary. A quote based purely on floor area, without a site assessment, is rarely accurate.
Factors That Affect Waterproofing Cost
System Type
Bitumen membrane, liquid-applied, crystalline, and cementitious systems all have different material and labour costs. The right system for the job — not the cheapest one available — should drive the choice.
Substrate Condition
If concrete repair is needed before waterproofing can begin, that adds cost. Skipping necessary repair to save money upfront usually costs more later, when the waterproofing fails over the same defect.
Area Complexity
Roofs or structures with lots of penetrations, upstands, parapets, and detailing take more labour time per square metre than a large, simple, uninterrupted area.
Access
Height, ease of getting materials and equipment to the work area, and whether scaffolding or additional safety measures are needed all affect labour cost.
Area Size
Larger, continuous areas are usually more cost-efficient per square metre to waterproof than several small, broken-up areas, due to setup and mobilisation costs.
Coats, Layers & Protection
Some systems require multiple coats or a protection board/screed over the membrane, which adds material and labour cost compared to a single-layer application.
Product Cost vs Installation Cost
Tswanacrete supplies ABE waterproofing products in Botswana Pula, and we can give you a firm product price once the system and quantities are confirmed. Installation is a separate cost, arranged through applicators, and priced based on labour, access, and site-specific conditions — this is why a full waterproofing quote usually has two components, not one blended rate.
How to Get an Accurate Quote
The closer we can get to the real conditions on site, the more accurate a quote will be. Photos of the substrate, rough dimensions, and details of any known problem areas (cracking, ponding, previous repairs) all help. For anything beyond a small, straightforward area, we'd recommend a site assessment before committing to a system or budget figure.
Get an Accurate Quotation
Send us your project details and we'll put together a written quotation based on your actual substrate and scope.