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Aluminium vs Timber Windows in Zanzibar

An honest comparison of aluminium and timber window systems for Zanzibar properties — covering cost, durability, coastal performance, maintenance, security and aesthetics for investors and developers.

Last updated: September 16, 2026

Quick Answer

For most Zanzibar properties, aluminium windows offer better long-term value due to superior salt air resistance, lower maintenance costs, and longer lifespan in coastal conditions. Timber windows are preferable for heritage properties or where traditional aesthetics are prioritised, but require annual maintenance costing $5–$15/m².

Detailed Comparison

FeatureAluminiumTimber
Upfront Cost$35–$65/m²✓ Better$50–$90/m²
Lifespan in Coastal Climate25–40 years✓ Better10–20 years (with maintenance)
Salt Air ResistanceExcellent — powder-coated or anodised finishes resist corrosion✓ BetterPoor — requires regular sealing and treatment
Maintenance RequiredMinimal — occasional cleaning✓ BetterAnnual sealing, painting or staining
Thermal InsulationGood with thermal break profilesNaturally good insulator✓ Better
SecurityStrong — multi-point locking compatible✓ BetterGood — but can warp over time
AestheticsModern, sleek, wide colour rangeWarm, traditional, natural grain
Environmental ImpactRecyclable, long lifespan offsets productionRenewable if sustainably sourced
CustomisationPowder-coated in any RAL colour✓ BetterStained or painted, limited by grain
Resale Value ImpactHigh — modern appearanceHigh — if well maintained

Cost Breakdown for Zanzibar

Aluminium Windows

  • • Standard profiles: $35–$45/m²
  • • Thermally broken: $50–$65/m²
  • • Premium (Schüco, Cortizo): $70–$100/m²
  • • Installation: Included in above
  • • Annual maintenance: $0–$2/m²
  • • 20-year total cost: $35–$105/m²

Timber Windows

  • • Softwood (pine): $50–$65/m²
  • • Hardwood (teak, mahogany): $70–$90/m²
  • • Premium (oak, iroko): $90–$130/m²
  • • Installation: Included in above
  • • Annual maintenance: $5–$15/m²
  • • 20-year total cost: $150–$390/m²

Coastal Performance in Zanzibar

Zanzibar's coastal environment presents unique challenges for window systems. Salt-laden air, high humidity, intense UV exposure, and seasonal monsoon rains all affect material performance.

Aluminium in Coastal Conditions

Powder-coated aluminium resists salt corrosion for 25–40 years. Anodised finishes provide additional protection. Thermal break profiles prevent condensation and improve energy efficiency. Hardware (stainless steel or marine-grade) is essential for beachfront properties.

Timber in Coastal Conditions

Untreated timber can warp, rot or suffer insect damage within 3–5 years in Zanzibar. Hardwoods (teak, iroko) perform better than softwoods but still require annual sealing. Marine-grade varnishes and定期 maintenance are essential to prevent deterioration.

Our Recommendation

For new builds and renovations in Zanzibar, we generally recommend aluminium windows with thermal break profiles for the best balance of cost, durability and low maintenance. For heritage properties or where traditional aesthetics are essential, hardwood timber windows with marine-grade finishes are appropriate — budget for annual maintenance.

For rental properties and hotels, aluminium is typically preferred due to minimal maintenance requirements and guest expectations for modern, secure windows.

Frequently Asked Questions

How much do aluminium windows cost in Zanzibar?
Aluminium windows in Zanzibar typically cost $35–$65 per square metre installed, depending on profile type (standard, thermally broken, or premium), glass specification, and hardware. Thermally broken profiles for beachfront properties start at approximately $50/m².
How much do timber windows cost in Zanzibar?
Timber windows in Zanzibar cost $50–$90 per square metre installed. Hardwood options (teak, mahogany) are at the higher end. Ongoing maintenance costs add $5–$15/m² annually for sealing, painting or treatment.
Which is better for Zanzibar's coastal climate?
Aluminium is generally better for Zanzibar's coastal climate. Salt air accelerates timber decay and requires annual maintenance. Aluminium with powder-coated or anodised finishes resists corrosion for 25–40 years with minimal upkeep.
Do timber windows last in Zanzibar?
Timber windows can last 10–20 years in Zanzibar if properly maintained with annual sealing, painting and treatment. Without maintenance, coastal conditions can cause warping, rot and insect damage within 3–5 years.
Can I get aluminium windows that look like timber?
Yes. Modern aluminium profiles can be powder-coated with wood-grain finishes that replicate the appearance of timber while providing the durability and low maintenance of aluminium. These are popular for heritage-style villas.
Which windows add more value to a Zanzibar property?
Both add value when well-maintained. Aluminium windows appeal to buyers seeking modern, low-maintenance properties. Timber windows appeal to those wanting traditional aesthetics. For rental properties, aluminium is typically preferred due to lower maintenance costs.

Need Help Choosing Windows?

We provide free consultations and site assessments across Zanzibar. Our team can recommend the best window systems for your property based on location, budget and aesthetic preferences.

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