A significant proportion of Harare's established residential stock, particularly houses built between 1950 and 1985 in suburbs like Mabelreign, Marlborough, Highfield, and the older sections of Borrowdale, contains asbestos-cement roofing, cladding, or ceiling tiles. Asbestos becomes a health hazard when it is disturbed. This article tells buyers how to identify it, what Zimbabwe's law says about disclosure, and what happens at transfer if asbestos is present.
If a Harare home was built before 1990, there is a reasonable probability it contains asbestos-cement materials somewhere in its structure. Zimbabwe had active asbestos cement manufacturing through the 1980s, including a factory in Harare producing chrysotile asbestos cement sheeting that was standard-issue roofing and ceiling material for residential construction across that period. Buyers who purchase a pre-1990 property without understanding where asbestos is likely to sit, what condition it needs to be in before it becomes a health risk, and what their offer to purchase should say about it, are absorbing a cost and health liability that belongs to the seller.
The most common location is the roof. Corrugated asbestos-cement sheeting, widely referred to as "Super Six" or "fibro," was the dominant roofing material in Zimbabwe's residential construction through the 1970s and 1980s. It is corrugated, grey to grey-white in colour, hard, and brittle with age. Suburbs with the highest concentration of pre-1985 housing stock, and therefore the highest probability of Super Six roofing, include Mabelreign, Marlborough, Waterfalls, Belvedere, Highfield, Avondale West, Greendale, and older sections of Borrowdale.
Ceiling tiles are the second common location. Pressed asbestos-cement tiles laid in a regular grid pattern were standard in many homes of the 1960s and 1970s. They typically have a slightly granular or textured surface and are uniform in size.
Pipe lagging and geyser insulation in some properties of this era used asbestos-based wrapping, particularly on hot water pipes and around geyser installations in utility rooms. The lagging appears as a grey or off-white wrapped covering around pipes, sometimes crumbling at joints or ends.
Flat-roof waterproofing compounds on some residential and commercial buildings also contained asbestos. If the property has a flat-roof section or outbuilding with a flat roof, and it predates the 1990s, this is worth checking.
One practical risk specific to Zimbabwe that is rarely discussed: if the property has a Super Six roof and a rainwater harvesting system that collects roof runoff, that water may contain asbestos fibres. Research on asbestos-cement roofing confirms that over time, weathering releases fibres that are carried into guttering and downpipes. Do not use rainwater harvested from a Super Six roof for drinking, cooking, or garden irrigation of crops.
Intact, undisturbed asbestos-cement in sound condition does not pose an immediate airborne fibre risk. The material encases the asbestos fibres in a cement matrix, and as long as that matrix is not broken, the fibres do not become airborne.
The risk materialises when the material is disturbed. Drilling, cutting, sanding, breaking, or pressure-washing asbestos-cement releases fibres that are invisible to the naked eye and remain suspended in air. Inhaled chrysotile asbestos fibres are linked to lung cancer, mesothelioma and asbestosis; and there is no safe threshold for asbestos fibre inhalation.
For buyers planning renovation, this is the operative concern. Replacing a Super Six roof, removing asbestos ceiling tiles, repairing cracked asbestos sheeting on an outbuilding: each of these tasks, done without proper containment and removal protocols, creates a fibre exposure event. The same applies to aged and weathered Super Six that has become friable (brittle and crumbling at the edges), which releases fibres more easily even without direct disturbance.
Zimbabwe does not have a standalone residential property disclosure statute that mandates asbestos disclosure at the point of sale. There is no equivalent to the Australian or UK regimes that require a seller to produce an asbestos register or condition report before marketing the property.
What does apply is general contract law. Under Zimbabwe's law of contract, if a seller is aware of a material defect and conceals it from a buyer, that concealment may allow the buyer to challenge the voetstoets (as-is) clause in the agreement of sale and pursue a claim for damages based on misrepresentation. The voetstoets clause protects a seller only against defects they did not know about or did not conceal. A seller who knows the roof is Super Six, knows it is deteriorating, and says nothing while the buyer signs an offer that includes a voetstoets clause, is not protected by that clause.
Whether deteriorating asbestos-cement constitutes a "material defect" in a legal sense has not been tested definitively in a published Zimbabwean court judgment that is publicly available. The argument that a reasonable buyer would consider it material, particularly one planning renovation or one with young children in the household, is strong. Treat it as a material defect, ask about it explicitly before signing, and document the seller's response.
Asbestos is classified as a hazardous substance under the Hazardous Substances and Articles Act [Chapter 15:17]. Any removal work on asbestos-containing materials is subject to compliance with the Factories and Works Act [Chapter 14:08] and NSSA occupational health and safety requirements, even in a residential setting.
| What You See | Where | What It Suggests |
|---|---|---|
| Corrugated grey or grey-white sheeting on roof | Roof, outbuildings, carport | Likely Super Six asbestos-cement if pre-1990 construction |
| Pressed tiles in a regular grid pattern on ceiling | Ceilings inside rooms | Possible chrysotile asbestos ceiling tiles |
| Grey wrapped covering on hot water pipes or around geyser | Utility room, roof space | Possible asbestos pipe lagging |
| Flat grey sheeting on outbuilding walls or fencing | Perimeter, outbuildings | Possibly asbestos-cement flat sheeting |
| Crumbling, powdery, or friable edges on any of the above | Any location | Higher risk; fibres more readily released |
Visual inspection is indicative, not conclusive. The only way to confirm whether a material contains asbestos is laboratory testing of a sample. Do not collect a sample yourself. The act of sampling, done without containment, releases fibres. Engage an occupational health professional or a contractor with verified experience in asbestos assessment to take and submit the sample. They will use the correct protective equipment and containment procedure. The sample is then tested at a laboratory and the result confirms presence or absence of asbestos fibres.
The standard offer to purchase template used by most agents in Zimbabwe does not address asbestos. You need to add three specific provisions before signing.
First, require the seller to disclose any known asbestos-containing materials on the property in writing, as a condition of the offer. A written disclosure creates a documented record of what the seller knew, which is the basis of any future misrepresentation claim if the disclosure turns out to be incomplete.
Second, make the sale conditional on the seller providing a professional asbestos assessment report from a qualified assessor prior to transfer, and that the assessment must confirm either that no asbestos-containing materials are present, or specify the location, condition, and risk rating of any materials found. If the seller refuses this condition, factor the unknown remediation risk into your offer price.
Third, if the assessment reveals asbestos-containing materials in deteriorating condition, the agreement should specify that the cost of safe removal or remediation is for the seller's account exclusively, or that the purchase price will be reduced by an agreed remediation estimate from a qualified contractor. Do not leave this open-ended. An open-ended clause that says "remediation at seller's cost" without a defined scope and cost estimate leads to disputes after signing.
If the seller refuses all three conditions, you have a choice: walk away, or price the remediation risk in by reducing your offer to reflect the cost of dealing with the problem after transfer.
For offers where you have not yet done an assessment, and you suspect asbestos based on the age of the property, add a due diligence condition: you have X days after signing to commission an asbestos assessment, and if the result reveals materials requiring remediation above a defined cost threshold, you have the right to cancel and recover your deposit. This is a straightforward condition precedent, similar in structure to the rates clearance conditions discussed in the Propertyzone guide on condition precedents in offers to purchase.
Safe asbestos removal is substantially more expensive than standard roofing replacement. The cost premium arises from fibre containment measures, worker personal protective equipment, the need to wet-down materials before handling to suppress fibre release, the requirement for sealed waste packaging, and specialist disposal at a site licensed to receive asbestos waste.
No standardised published rate exists for residential asbestos removal in Zimbabwe as of mid-2026. The absence of a formal residential asbestos contractor licensing regime (unlike South Africa, which has a tiered registered contractor system) means pricing varies significantly between contractors and is not benchmarked publicly. The cost of removing and replacing a full Super Six roof on a standard Harare residential property will materially exceed the cost of replacing a metal or tile roof of equivalent size. Obtain quotes from at least two contractors before committing to any figure in your offer to purchase negotiation, and verify that the contractor's quoted scope includes containment, removal, and licensed disposal, not just replacement with new material.
Where a contractor intends to install new roofing over existing Super Six without removing it, understand that the asbestos remains in place and becomes your ongoing maintenance and eventual disposal problem. The removal cost is deferred, not eliminated.
On insurance: before transfer, check with your proposed property insurer whether the policy covers claims arising from asbestos disturbance. Some insurers exclude asbestos-related damage or require prior declaration of asbestos-containing materials as a condition of coverage. A property insurer who is not notified of known asbestos materials may decline a claim where the damage event involves those materials. Ask the question in writing before you sign the transfer.
Building plan approvals for renovation work on a property with asbestos-containing materials may require confirmation of safe removal as a precondition. The Propertyzone guide on building plan approvals covers what HCC reviews in renovation submissions.
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