Many homeowners in Benin City discover too late that the aluminum windows they installed years ago are no longer serving their purpose.

Some no longer close properly.

Some leak whenever heavy rain falls.

Others have broken locks, weak frames, faded finishes, or cracked glass.

The mistake many Nigerians make is assuming they can continue repairing a window that should have been replaced years ago.

In reality, repeated repairs often end up costing more than installing a new aluminum window.

If you are searching for the cost to replace aluminum windows, this guide explains everything you need to know, including pricing, factors affecting cost, common mistakes, and how to avoid wasting money.

At OJ Aluminum, we have helped homeowners, landlords, and property developers across Benin City replace old aluminum windows with stronger, safer, and more attractive alternatives. This article is based on practical experience from real projects.

What Does It Mean to Replace Aluminum Windows?

Replacing aluminum windows means removing an existing window and installing a new one.

This may involve:

• Removing old frames
• Removing damaged glass
• Installing new aluminum frames
• Installing new glass panels
• Sealing the window properly
• Finishing surrounding wall areas

The replacement can be done during renovation or while living in the house.

What Is the Average Cost to Replace Aluminum Windows in Benin City?

Short Answer

The cost to replace aluminum windows in Benin City, Edo State, Nigeria typically ranges from ₦80,000 to over ₦400,000 per window depending on size, glass type, profile quality, design, and installation requirements.

Estimated Price Guide

Small Bathroom Window

• ₦45,000 – ₦90,000

Standard Bedroom Window

• ₦80,000 – ₦180,000

Living Room Window

• ₦80,000 – ₦180,000+

Large Sliding Window

• ₦150,000 – ₦250,000+

Executive Building Windows

• ₦180,000 – ₦300,000+

Please note that aluminum prices change regularly because most materials are influenced by exchange rates, transportation costs, and market conditions.

For accurate pricing, professional measurement is always recommended.

Types of Aluminium Windows and Prices in Nigeria (2026 Guide)

Factors That Affect the Cost to Replace Aluminum Windows

1. Window Size

Larger windows require:

• More aluminum
• More glass
• More accessories

A large living room window will naturally cost more than a bathroom window.

2. Type of Glass

The glass selected significantly affects cost.

Examples include:

Clear Glass

Usually the most affordable option.

Tinted Glass

Popular in Benin City due to sunlight reduction.

Reflective Glass

Often used in modern homes and commercial buildings.

Tempered Glass

Stronger and safer but more expensive.

3. Window Design

The design chosen affects material quantity and labor.

Examples include:

• Sliding windows
• Casement windows
• Frameless windows
• Fixed windows
• Combination windows

More complex designs typically cost more.

4. Quality of Aluminum Profile

Not all aluminum profiles are the same.

One common mistake many clients make is choosing the cheapest profile available.

Several homeowners have contacted us after installing low-quality profiles that began bending, rattling, or fading after a few years.

Quality aluminum may cost more initially but usually lasts much longer.

5. Location of the Property

Installation costs can vary depending on accessibility.

A project in central Benin City may cost differently from one located in a remote area outside the city.

The same applies to projects in Lagos, Abuja, Port Harcourt, and Asaba.

6. Condition of Existing Windows

Older windows often require additional work.

Examples include:

• Wall repairs
• Frame removal
• Structural adjustments
• Replastering

These can increase replacement costs.

Signs Your Aluminum Windows Need Replacement

Difficulty Opening and Closing

If windows consistently jam, replacement may be a better option than repeated repairs.

Water Leakage During Rain

This is common during Nigeria’s rainy season.

Poor sealing can damage walls, ceilings, and interior finishes.

Broken Locks

Security should never be compromised.

Weak locks increase burglary risks.

Visible Corrosion or Damage

Damaged frames can affect both appearance and performance.

High Energy and Cooling Costs

Poor windows allow heat into the building, making rooms uncomfortable.

Cost of Aluminum Windows in Benin City (2026 Price Guide)

Repair vs Replacement: Which Saves More Money?

Short Answer

If repairs are becoming frequent, replacement is usually the smarter financial decision.

We have seen cases where homeowners spent money repairing the same windows every few months.

After calculating the total repair costs, they realized replacing the windows would have been cheaper.

As a general rule:

Repair When:

• Damage is minor
• Frames are still strong
• Window structure remains intact

Replace When:

• Frames are damaged
• Security is compromised
• Leaks are recurring
• Multiple components have failed

Common Mistakes Homeowners Make

Choosing Price Over Quality

The cheapest option often becomes the most expensive later.

Ignoring Professional Measurement

Incorrect measurements can lead to costly adjustments.

Hiring Unqualified Installers

Poor installation can ruin even high-quality materials.

Using Inappropriate Glass

Different areas of the house require different glass solutions.

Waiting Too Long

Delaying replacement can increase damage to surrounding walls and finishes.

How Long Aluminium Windows Last in Nigeria (2026 Durability Guide)

Expert Tips Before Replacing Aluminum Windows

Get Multiple Measurements

Always confirm measurements before fabrication begins.

Prioritize Security

Invest in quality locks and accessories.

Consider Future Maintenance

Choose materials that can withstand Nigerian weather conditions.

Think Long-Term

A quality installation today can serve you for decades.

Work With Experienced Professionals

Experience reduces costly mistakes.

At OJ Aluminum, we have seen situations where homeowners paid twice because the first installation was done poorly.

Myths vs Facts About Aluminum Windows

Myth: All Aluminum Windows Are the Same

Fact

Profile thickness, finishing quality, and fabrication standards vary greatly.

Myth: Replacement Is Always Expensive

Fact

Replacing a failing window can save money compared to continuous repairs.

Myth: Imported Means Better

Fact

Proper fabrication and installation matter more than marketing claims.

Myth: Aluminum Windows Require No Maintenance

Fact

Routine cleaning and inspections help extend lifespan.

Frequently Asked Questions

How much does it cost to replace aluminum windows in Benin City?

Most replacements range from ₦80,000 to over ₦400,000 per window depending on size and design.

Is it cheaper to repair or replace aluminum windows?

Minor damage may be repaired, but recurring issues often make replacement more economical.

How long do aluminum windows last?

Quality aluminum windows can last 20 to 40 years when properly fabricated and maintained.

Can I replace only the glass?

Yes. If the frame remains in good condition, replacing only the glass may be possible.

Which glass is best for homes in Benin City?

Tinted and tempered glass are among the most popular choices because they help with heat control and safety.

How long does installation take?

Most residential installations can be completed within one day, depending on project size.

Do aluminum windows increase property value?

Yes. Quality windows improve appearance, security, and buyer perception.

Are aluminum windows suitable for Nigerian weather?

Yes. Aluminum performs well during rainy seasons, Harmattan periods, and hot weather when properly installed.

Which Is Better — Casement or Sliding Windows? The Honest Answer

Final Thoughts

If your windows leak whenever it rains, no longer close properly, or have become a security concern, it may be time to stop spending money on repeated repairs.

The actual cost to replace aluminum windows depends on the size, design, glass type, and installation requirements. However, investing in quality materials and proper installation usually saves more money in the long run.

One thing we always tell homeowners is this:

A window is not just glass and aluminum.

It affects your home’s security, comfort, appearance, and value.

Choosing the right replacement today can save you years of frustration tomorrow.

Call Engineer OJ for Professional Aluminum Window Replacement

Need a professional assessment of your existing windows?

Engineer OJ and the OJ Aluminum team provide:

• Aluminum window replacement
• Aluminum window fabrication
• Sliding windows
• Casement windows
• Aluminum doors
• Roofing solutions
• Gutters and water collectors
• Building consultation services

Whether you are renovating an old property or completing a new building project in Benin City, Edo State, we can help you choose the right solution for your budget and needs.

Contact OJ Aluminum today for professional advice and an accurate quotation.