How Much Do Fixed Sash Windows Cost? Pricing Guide and Factors

Transparent Pricing for Fixed Sash Windows

At London Sash Window Experts, we believe in 100% transparent pricing—no hidden fees, no last-minute surprises. Whether you’re a homeowner, landlord, architect, or property renovator, knowing the cost of fixed sash windows helps you budget effectively.

The average cost of a fixed sash window in the UK ranges from £500 – £1,200 per window, depending on size, material, and glazing type. Premium materials like hardwood or Accoya™ increase costs, while uPVC remains budget-friendly.

What Influences the Cost of Fixed Sash Windows?

Several factors impact the price:

Window Size: Larger windows require more materials and craftsmanship.
Frame Material: Softwood is more affordable, while Accoya™ or hardwood is pricier but lasts longer.
Glazing: Double-glazed fixed sash windows reduce heat loss by up to 60%, cutting energy bills.
Finish & Customisation: Bespoke colours, heritage styling, or period-authentic detailing add to the cost.
Installation Complexity: Listed buildings or non-standard frames may require additional work.

Can I Get an Accurate Quote Online?

Yes. At London Sash Window Experts, we offer instant online estimates and free consultations—no need for a home visit unless required. Our detailed pricing breakdown ensures clarity and confidence in every quote.

Understanding Fixed Sash Windows: Features & Benefits

Fixed sash windows, unlike traditional sash windows, do not have moving parts. This makes them a low-maintenance, highly energy-efficient option for homeowners who want the classic sash aesthetic without the upkeep of sliding mechanisms.

Why Choose Fixed Sash Windows?

Fixed sash windows offer several advantages:

Lower Cost – They are up to 30% cheaper than traditional sliding sash windows due to their simplified construction.
Superior Energy Efficiency – With no gaps or moving elements, modern fixed sash windows can increase thermal efficiency by up to 50% compared to older single-glazed models.
Minimal Maintenance – Fewer components mean less wear and tear and lower long-term costs.
Aesthetic Integrity – Ideal for period properties, they preserve historical charm while benefiting from modern glazing technology.
Versatile Placement – Perfect for bathrooms, hallways, and feature windows in living areas where ventilation isn’t a priority.

Do Fixed Sash Windows Look Different?

No. Fixed sash windows are visually identical to traditional sash windows but remain sealed shut. You still get the elegant proportions and heritage-style frames, just without the sliding functionality.

Can Fixed Sash Windows Be Customised?

Yes. You can choose from:

Frame Materials – Timber, uPVC, or Accoya™ for durability.
Glazing Options – Double or triple glazing for insulation.
Bespoke Finishes – Heritage colours, wood stains, or period-authentic detailing.

For homeowners seeking aesthetic appeal, energy efficiency, and lower costs, fixed sash windows are an investment that enhances property value while reducing upkeep.

What Affects the Price of Fixed Sash Windows?

Fixed sash windows offer a cost-effective alternative to traditional sliding sash designs, but their price can vary significantly based on materials, size, glazing, and installation complexity. Understanding these factors helps you balance cost and quality when making a purchase.

1. Material Choice: Timber vs. uPVC vs. Aluminium

The material used for the window frame heavily influences the final price:

uPVC – The most affordable option, with prices 25% lower than timber. It requires minimal maintenance but lacks the premium aesthetic of wood.
Timber – More expensive but can last over 50 years with proper care. Hardwoods like Accoya™ offer superior durability but at a higher cost.
Aluminium – The most durable and sleek option, resistant to warping, but it costs more than timber and is less common in period properties.

2. Window Size and Customisation

Standard sizes are cheaper, but custom dimensions increase costs by 20-40% due to bespoke manufacturing.
Larger windows require more materials and complex installation, further driving up the price.

3. Glazing Options and Energy Efficiency

Single glazing – The cheapest but least energy-efficient option.
Double glazing – A standard choice that enhances insulation and reduces heat loss by up to 60%.
Triple glazing – Maximises thermal efficiency but costs 30-40% more than double glazing.

4. Installation Costs & Location Factors

Labour costs vary based on:

Location – Urban areas tend to have higher installation fees.
Complexity – Period properties may require specialist fitting, increasing labour costs.
Access – Upper-floor windows can cost more to install due to scaffolding requirements.

How to Reduce Costs Without Compromising Quality

Opt for standard sizes to avoid custom manufacturing fees.
Choose uPVC or engineered timber for affordability without sacrificing aesthetics.
Double glazing offers the best balance of cost and efficiency.
Compare multiple installers to find competitive labour rates.

By carefully selecting materials, glazing, and installation methods, you can get high-quality fixed sash windows at the best possible price.

Timber, uPVC, or Aluminium? Choosing the Right Material

Selecting the right material for fixed sash windows affects durability, aesthetics, energy efficiency, and long-term costs. Below, we break down the pros and cons of timber, uPVC, and aluminium to help you make the best decision.

1. Timber: Classic Elegance with Longevity

Best for: Traditional homes, period properties, and high-end restorations.

Aesthetic Appeal – Timber sash windows maintain the authentic character of heritage properties.
Durability – With proper maintenance, timber windows can last over 60 years, outliving uPVC alternatives.
Energy Efficiency – Natural wood provides excellent insulation, particularly when paired with double glazing.
Cost Consideration – 40% more expensive than uPVC, but its lifespan offsets the higher upfront cost.

2. uPVC: Affordable & Low-Maintenance

Best for: Budget-conscious homeowners looking for a modern alternative.

Affordability – The most cost-effective option, typically 40% cheaper than timber.
Maintenance-Free – Unlike wood, uPVC does not require repainting or refinishing.
Lifespan – Typically lasts 25-35 years, shorter than timber but without ongoing upkeep costs.
Energy Efficiency – Performs well but slightly less insulating than timber.

3. Aluminium: Modern, Strong & Sleek

Best for: Contemporary homes and high-end installations.

Durability – Extremely strong and resistant to warping, making it ideal for large fixed sash windows.
Energy Efficiency – Requires thermal breaks to match uPVC and timber insulation levels.
Aesthetic Appeal – Minimalist, sleek frames suit modern homes and urban architecture.
Cost – Generally more expensive than both uPVC and timber, but high durability compensates for the cost.

Which Material Saves You the Most Money Over Time?

While uPVC is the most affordable upfront, timber’s longer lifespan (60+ years vs. 25-35 years for uPVC) makes it a worthwhile investment for period properties. Aluminium’s durability offsets its higher cost in modern applications.

Choosing the right material depends on budget, aesthetics, and long-term value.

Glazing Options & Their Effect on Cost

Choosing between single, double, or triple glazing impacts cost, insulation, and noise reduction. Each option suits different property needs, from historic homes to modern energy-efficient designs.

1. Single Glazing: The Cheapest, But Least Efficient

Best for: Listed buildings and heritage properties where regulations restrict modern upgrades.

Cost: Most affordable but offers poor insulation.
Energy Efficiency: Least effective, leading to higher heating costs.
Legality: In some conservation areas, single glazing must be retained for authenticity.

2. Double Glazing: The Ideal Balance

Best for: Most homes, balancing insulation, noise reduction, and cost.

Cost vs. Benefit: More expensive than single glazing but saves up to £195/year on energy bills.
Noise Reduction: Blocks up to 25 decibels of external noise.
Energy Efficiency: Retains heat, making it a cost-effective long-term investment.

3. Triple Glazing: Maximum Performance at a Higher Cost

Best for: Homes in cold climates or noisy areas.

Cost: Typically 20–30% more expensive than double glazing.
Insulation: Provides the highest energy efficiency, reducing heat loss significantly.
Noise Reduction: Reduces external noise by up to 35 decibels, ideal for urban environments.

Is Triple Glazing Worth the Extra Cost?

While triple glazing costs more upfront, it enhances comfort, cuts noise, and maximises energy savings. If you live in a busy city or a colder climate, the long-term efficiency benefits outweigh the initial expense.

How Do Fixed Sash Windows Compare in Price?

When choosing windows, cost is a key factor, but so is energy efficiency, durability, and aesthetics. Fixed sash windows offer a cost-effective alternative to other window types due to their simpler design and fewer moving parts.

1. Fixed Sash Windows vs. Sliding Sash Windows

Cost: 20–40% cheaper than traditional sliding sash windows.
Efficiency: Fixed sash windows have better insulation due to their airtight design.
Maintenance: No moving components means fewer repairs over time.

2. Fixed Sash Windows vs. Casement Windows

uPVC casement windows are 10–15% cheaper than fixed sash windows.
Timber casement windows, however, tend to be more expensive due to higher material costs.
Functionality: Casement windows open outward, offering better ventilation but requiring more space.

3. Fixed Sash vs. Tilt-and-Turn Windows

Tilt-and-turn windows provide multiple opening options but are significantly more expensive due to complex hinges and locking systems.
Energy efficiency is comparable to fixed sash windows, but tilt-and-turn styles require more maintenance.

Is Investing in Fixed Sash Windows Worth It?

For budget-conscious homeowners, fixed sash windows provide superior insulation at a lower price than most alternatives. They’re ideal for period properties, modern homes, and energy-efficient upgrades, balancing cost, style, and durability.

Understanding Installation Costs for Fixed Sash Windows

Installing fixed sash windows is a significant investment, and labour costs can vary widely depending on factors like property type, location, and complexity. Here’s what you need to know to budget effectively and avoid unnecessary expenses.

1. How Much Should You Budget?

Professional installation costs: Typically range from £150 – £400 per window.
Regional differences: Installation in London can be up to 20% more expensive due to higher labour rates.
Complexity factor: Larger windows or those requiring structural adjustments will increase costs.

2. How Property Type Affects Installation

Older homes: Often require more prep work, such as repairing existing frames or modifying openings, which adds to labour costs.
Listed buildings: May involve additional compliance fees if planning permission is required.
New builds: Typically have lower installation costs as they are designed for modern window fittings.

3. Hidden Costs to Watch Out For

Removal and disposal of old windows can add £50–£100 per unit.
Scaffolding costs may be necessary for upper-floor installations.
Unexpected repairs: Rotten timber frames or structural issues can lead to additional expenses.

4. How to Avoid Overpaying

Get multiple quotes to compare pricing and services.
Choose a reputable installer with transparent pricing and verified reviews.
Check for warranties, ensuring labour is covered against defects.

How Fixed Sash Windows Can Lower Your Energy Bills

Energy efficiency is a key factor when choosing windows, and fixed sash windows outperform many alternatives due to their airtight design and high thermal retention. By reducing heat loss and improving insulation, they help cut energy costs over time.

1. How Much Can You Save?

Replacing single glazing with double glazing can reduce heat loss by up to 50%, significantly improving thermal efficiency.
Homes with energy-efficient windows can save up to £195 per year on heating bills, depending on property size and insulation.
Low-E coatings and argon-filled glazing further improve performance by reflecting heat back into the home.

2. Why Double-Glazed Fixed Sash Windows Are Ideal for Insulation

No gaps or moving parts = fewer drafts and better thermal retention.
Double glazing traps heat within an insulated space, keeping homes warmer in winter and cooler in summer.
Triple glazing offers additional insulation but comes at a higher cost.

3. Are Government Grants Available?

Some UK homeowners may qualify for government-backed schemes like the ECO4 scheme for energy-efficient home improvements.
Grants depend on income level, property type, and existing insulation quality.

4. Long-Term Value: Is It Worth the Investment?

Energy savings accumulate over time, helping to offset the initial installation costs.
Enhanced property value and lower carbon footprint make fixed sash windows a future-proof investment.

Tailoring Fixed Sash Windows to Your Home

Fixed sash windows offer a blend of classic design and modern functionality, with extensive customization options to match different architectural styles. Whether you’re restoring a heritage property or updating a contemporary home, tailored features can enhance both aesthetics and security.

1. Custom Colours & Finishes

Standard white uPVC windows are the most affordable, but if you want a unique look, custom colours are available.
Custom-coloured finishes can increase costs by 15-25%, depending on the material and coating type.
Timber frames can be stained or painted in heritage-appropriate colours for period homes.

2. Decorative & Privacy Glazing

Frosted, etched, or stained glass options can enhance privacy while maintaining natural light.
Bespoke decorative glazing adds an extra layer of visual appeal but can raise costs by 10-20%.

3. Security Enhancements: Are They Worth It?

Toughened or laminated glass offers better impact resistance and burglary protection, costing 10-20% more.
Multipoint locking mechanisms and reinforced window frames improve security further.

4. Will Custom Windows Match My Home’s Aesthetic?

Modern manufacturing allows for near-identical replacements for existing windows.
Period properties often require specific frame styles and materials, increasing costs but ensuring compliance with planning regulations.

How Long Do Fixed Sash Windows Last & What Maintenance is Required?

Fixed sash windows are designed for durability, but their lifespan and maintenance depend on the materials used. While uPVC windows require little upkeep, timber sash windows demand more attention but can last significantly longer.

1. Lifespan of Fixed Sash Windows

uPVC sash windows: Low maintenance and last up to 30 years, making them a practical choice for homeowners seeking longevity with minimal effort.
Timber sash windows: With proper care, high-quality timber windows can last over 60 years, making them a solid long-term investment.

2. Maintenance Requirements

uPVC Windows: Minimal Upkeep

Require only occasional cleaning with warm water and mild detergent.
Inspect window seals every few years to prevent air leaks.
Hinges and locks may need lubrication over time.

Timber Windows: Periodic Maintenance Required

Repainting or refinishing is necessary every 5-8 years to protect against moisture and rot.
Regular inspections for cracks, peeling paint, or wood decay are essential.
Applying a wood preservative can extend the window’s lifespan.

3. Are Fixed Sash Windows a Long-Term Investment?

Yes—while uPVC offers convenience, well-maintained timber windows outlast most alternatives, making them a cost-effective choice for period homes and heritage properties.

Finding a Trusted Fixed Sash Window Supplier

Choosing the right supplier for fixed sash windows ensures quality, compliance, and value for money. A reputable supplier provides transparent pricing, professional installation, and guarantees that meet industry standards.

1. How to Identify a Reliable Sash Window Supplier

Check for FENSA or CERTASS certification – FENSA-registered companies comply with UK building regulations, ensuring energy efficiency and quality installation.
Read online reviews – Verified customer feedback on platforms like Trustpilot or Google Reviews can reveal a company’s reliability.
Look for no-obligation quotes – A reputable supplier should provide a free, detailed quote without hidden costs.
Avoid vague pricing – Suppliers unwilling to give upfront pricing may add unexpected fees later.

2. Why You Should Get Multiple Quotes

Comparing at least three quotes can save up to 15% on installation costs, giving you better negotiating power.
Different companies may include additional services like old window removal at no extra charge.
Some suppliers offer seasonal discounts or bundled services, reducing overall expenses.

3. What Guarantees to Look For

Product warranties – High-quality sash windows come with guarantees of 10–20 years.
Workmanship guarantees – A reputable installer should cover installation for at least 5 years.
After-sales support – Ensure your supplier provides repair and maintenance services.

Ready to Upgrade? Get a Free Quote Today

Choosing the right fixed sash windows can transform your home’s aesthetics, energy efficiency, and security. At London Sash Window Experts, we make the process simple, transparent, and hassle-free.

1. How to Get Your Free Quote

Fill out our quick online form – 80% of homeowners prefer getting an online estimate before booking an in-person consultation.
Schedule a no-obligation consultation – Our experts assess your requirements and provide a detailed quote.
Fast turnaround – Get an accurate price within 24–48 hours.

2. Are There Any Current Discounts?

We offer seasonal promotions on selected sash window installations.
Multi-window discounts – Save more when upgrading multiple windows.
Price-match guarantee – Found a better deal? We’ll match or beat it.

3. Why Choose London Sash Window Experts?

1,000+ successful installations backed by 5-star reviews.
No hidden fees – What we quote is what you pay.
Expert craftsmanship – Our team specialises in both traditional and modern sash windows.

📞 Contact us today to upgrade your windows with confidence.

FAQ Section: Answering Common Customer Questions

How Energy Efficient Are Fixed Sash Windows Compared to Other Types?

Fixed sash windows are among the most energy-efficient window styles due to their airtight design. With no moving parts, they eliminate draughts that often occur in sliding or casement windows.

Double glazing reduces heat loss by up to 60%, helping cut heating bills.
Low-E glass and argon-filled glazing enhance insulation and reduce condensation.
Compared to sliding sash windows, fixed sash designs improve thermal efficiency by 30%.
Triple glazing is an option, further reducing heat loss and external noise.

💡 Homeowners save an average of £195 per year after switching to energy-efficient fixed sash windows.

Will Installing Fixed Sash Windows Add Value to My Property?

Upgrading to energy-efficient sash windows is a proven way to increase home value and appeal to buyers:

5-10% boost in property value when upgrading to energy-efficient sash windows.
94% of UK buyers prioritise energy efficiency when purchasing a home.
Period-style sash windows retain the character of heritage homes, increasing desirability.

What’s the Timeline for Installing Fixed Sash Windows?

Most installations take 1-2 days per window, depending on complexity.
Up to 5 windows per day can be replaced by a skilled installer.
Homes in London may face longer installation times due to access restrictions.
If an installation spans multiple days, homes remain secure overnight.

Will Fixed Sash Windows Maintain My Home’s Traditional Look?

For heritage properties, fixed sash windows can be designed to match Victorian, Georgian, or Edwardian aesthetics:

Timber sash windows are accepted in 85% of conservation areas.
Bespoke glazing options replicate traditional styles while improving insulation.
Listed buildings may require specific timber sash windows to meet regulations.
Aesthetic-accurate windows can increase a heritage property’s value by 12%.

Comparing Timber, uPVC, and Aluminium Fixed Sash Windows

Each material offers distinct benefits:

Timber – Classic, ideal for period homes, but requires maintenance.
uPVC – Affordable and low-maintenance, costing 30-50% less than timber.
Aluminium – Modern, durable, and lasts over 45 years.

Choosing the right material depends on budget, insulation needs, and home style.

What Are My Glazing Options for Fixed Sash Windows?

Double glazing improves thermal efficiency by 60% over single glazing.
Triple glazing enhances soundproofing, reducing noise by 50%.
Slimline double glazing is available for period properties where thicker units may be restricted.
Laminated glass improves security and reduces outside noise.

🔎 Balancing insulation, noise reduction, and aesthetics is key when selecting the best glazing option.