Aluminium vs UPVC vs Wood Windows: Which is Best for Nepal?
December 15, 2025•7 min read
Choosing between aluminium, UPVC, and wooden windows? Each material has distinct advantages and disadvantages. For Nepal's climate and conditions, understanding these differences is crucial. This comprehensive guide compares all three options to help you make the right decision for your home.
Quick Comparison Table
| Factor | Aluminium | UPVC | Wood |
|---|---|---|---|
| Cost (per sq.ft) | Rs. 450-650 | Rs. 700-1,600 | Rs. 1,500-3,000 |
| Durability | 25-40 years | 20-30 years | 20-30 years (hardwood) |
| Maintenance | Low | Very Low | High |
| Heat Insulation | Moderate | Excellent | Good |
| Sound Insulation | Good | Excellent | Very Good |
| Strength | Very High | Moderate | Good |
| Termite Risk | None | None | High |
| Water Resistance | Excellent | Excellent | Poor |
| Repair Ease | Easy | Difficult | Moderate |
| Local Availability | Excellent | Limited | Good |
Aluminium Windows: Pros & Cons
Advantages
- • More affordable initial cost
- • Extremely strong and durable
- • Slim frames = more glass area
- • Easy to repair locally
- • Parts widely available in Nepal
- • Many color options
- • Recyclable and eco-friendly
- • Won't warp in heat
Disadvantages
- • Conducts heat (less insulating)
- • Can feel cold in winter
- • May develop condensation
- • Requires periodic lubrication
UPVC Windows: Pros & Cons
Advantages
- • Excellent heat insulation
- • Superior sound insulation
- • No condensation issues
- • Very low maintenance
- • Won't rust or corrode
- • Good for AC rooms
Disadvantages
- • Higher initial cost (40-150% more than aluminium)
- • Thicker frames = less glass area
- • Fewer color options than aluminium
- • Can yellow/fade over time (especially white UPVC)
- • May warp in extreme heat
- • More difficult to repair than aluminium
Wood Windows: Pros & Cons
Advantages
- • Beautiful, traditional appearance
- • Excellent insulation properties
- • Natural material, eco-friendly
- • Good sound dampening
- • Can be repainted/refinished
- • Premium aesthetic value
Disadvantages
- • Most expensive option
- • High maintenance (painting every 2-3 years)
- • Prone to termite damage in Nepal
- • Warps and swells in monsoon
- • Requires regular treatment
- • Not suitable for humid areas
- • Quality hardwood (Sal, Sissoo) lasts 20-30 years but is expensive
- • Labor-intensive to maintain
Which is Best for Nepal?
Our Recommendation: Aluminium Windows
For most homes in Nepal, aluminium windows are a practical choice. Here's why we recommend aluminium:
- 1. Lower initial cost: Aluminium is 30-50% cheaper than UPVC initially, making it more accessible. Quality wood is even more expensive.
- 2. Wide service availability: Both aluminium and UPVC workers are readily available in Kathmandu today. Aluminium parts are easier to source locally.
- 3. Monsoon durability: Aluminium handles Nepal's monsoon perfectly with no swelling or warping. Wood can swell and warp in high humidity, while UPVC performs well but at higher cost.
- 4. Low maintenance: Aluminium needs occasional cleaning and lubrication. UPVC also needs minimal maintenance. Wood requires periodic treatment and repainting every 3-5 years depending on exposure.
- 5. Termite-proof: Both aluminium and UPVC are immune to termites, unlike wood which is vulnerable in Nepal's climate.
- 6. Better value over time: Lower initial cost plus low maintenance makes aluminium cost-effective over 10+ years compared to other materials.
When to Choose UPVC:
- Rooms with air conditioning where better thermal insulation matters
- High-rise buildings in noisy areas (superior soundproofing)
- Homes where budget allows for the higher initial investment
- Buildings near highways or airports requiring noise reduction
- When you prioritize insulation over initial cost savings
When to Choose Wood:
- Heritage or traditional-style homes where authentic aesthetics matter
- High-end properties with budgets for quality hardwood (Sal, Sissoo, Teak)
- Homes with dedicated maintenance resources and commitment
- When you value natural materials and traditional craftsmanship
- Interior windows in dry, climate-controlled spaces work well with wood
- Important: Exterior wood windows need regular maintenance (repainting every 3-5 years, termite treatment) in Nepal's monsoon climate
Cost Comparison for a Typical Home
| Item | Aluminium | UPVC |
|---|---|---|
| 3 Bedroom Windows (avg 60 sq.ft) | Rs. 27,000 | Rs. 42,000 |
| 2 Bathroom Ventilators | Rs. 4,000 | Rs. 7,000 |
| Kitchen Window | Rs. 4,500 | Rs. 7,500 |
| Living Room Sliding Door | Rs. 18,000 | Rs. 28,000 |
| Total | Rs. 53,500 | Rs. 84,500 |
| Savings with Aluminium | Rs. 31,000 (37% less) | |
* Prices are approximate for Kathmandu area, including installation. Actual costs vary by design and glass type.
The Bottom Line
For most homes in Nepal, aluminium windows offer excellent value for money. They're affordable, durable, widely serviceable, and well-suited to our climate. UPVC is an excellent choice if you prioritize thermal insulation and soundproofing and have budget for the higher cost. Both materials perform well in Nepal - choose based on your specific needs and budget.
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