Sash Window Replacement

Breathe new life into your home with exquisitely crafted sash window replacements. Designed to preserve the timeless beauty of your property while embracing modern innovation, our bespoke timber sash windows offer the perfect balance of heritage aesthetics and cutting-edge performance. Whether restoring the grandeur of a Victorian home or refining a contemporary space with classic charm, our expertly handcrafted windows enhance both style and functionality.

Every installation is a seamless blend of tradition and technology, ensuring new sash windows that radiate elegance, improve thermal efficiency, and provide lasting durability. From ornate mouldings to glazing bar details, each element is designed to reflect the grace and refinement of period properties, while modern double glazing discreetly enhances insulation and energy efficiency.

Timber Sash Window Replacement Features

Perfect Fit for Any Home

Our sash window replacement suits all properties, from period homes to modern upgrades. We replicate moulding designs and horn details, preserving classic style with modern functionality.

Superior Double Glazing

We use new double-glazed glass, installed internally for better durability, insulation, and energy efficiency.

Retain Original Character

Where possible, we fit new sashes into existing sash windows’ frames, blending traditional charm with modern benefits.

Flawless Factory Finish

Our new sash windows come in a factory-applied spray paint finish, offering long-lasting colour and weather resistance.

Premium Hardware Options

Choose from a wide range of traditional and modern hardware, ensuring style, security, and smooth operation.

Built to Last

Made from premium hardwood, our sash windows come with an insurance-backed warranty, guaranteeing long-term durability.

What is Sash Window Replacement?

Sash window replacement involves removing and replacing the whole window or just the new sashes, depending on the condition of your existing sash windows. Our expert installation team ensures minimal disruption while delivering a new sash window that blends effortlessly with your home’s traditional look.

The process begins with a detailed assessment of your older sash windows, considering factors such as sash window materials, structural integrity, and energy efficiency. If the sashes or frames are beyond minor repairs, we provide a full replacement service, using hardwood timber to recreate the original style while incorporating new double-glazed glass for enhanced thermal efficiency.

Our bespoke timber sash windows can be tailored to suit any property, from listed buildings that require specialist approval to modern homes seeking a touch of classic style. We ensure all replacements meet planning permission and building regulations, providing an insurance-backed guarantee for long-lasting quality.

Why You May Need Sash Window Replacement

1. Improved Energy Efficiency & Draught Proofing

Single glazing in older sash windows often leads to heat loss and higher energy bills. By installing double glazed sash windows, you can significantly enhance your home’s thermal efficiency, making it warmer in winter and cooler in summer. Our modern sash windows are designed to prevent draughts while maintaining the traditional look of your home.

2. Structural Damage & Rotting Wood

Over time, exposure to the elements can cause timber windows to deteriorate, with wood rot, cracked glazing bars, and weakened joints. If left untreated, this can compromise the safety and appearance of your home. Replacing your existing sash windows with high-quality hardwood ensures durability and long-term protection.

3. Enhancing Aesthetic Appeal & Property Value

New sash windows can transform the aesthetic appeal of your home, potentially increasing its market value. Whether you own a Victorian home or a contemporary property, our bespoke sash windows offer a stylish, energy-efficient upgrade that appeals to potential buyers.

Repair vs Replacement – What’s Best for Your Home?

Sometimes, minor repairs can restore your existing sash windows, but in other cases, full replacement is the best option. Here’s a quick guide to help you decide:

Choose Repair if:

Your sashes are in good condition but need new hardware or draught proofing.
The wood frame is still structurally sound, requiring only minor repairs.
You want to preserve the original character of a listed building.
You’re looking for a budget-friendly option with minimal disruption.
You need to replace a single glazing pane rather than the whole window.

Choose Replacement if:

Your older sash windows suffer from severe wood rot or structural damage.
You want to upgrade to new double-glazed windows for better energy efficiency.
Your existing sash windows no longer comply with building regulations.
You want a modern sash window design that enhances home improvement efforts.
You need larger windows to bring in more natural light while maintaining classic style.

Want To Know More About Overhauling Your Sash Windows?

Speak With a Member of Our Team

Enquire Here

Frequently asked questions about Sash Window Replacement

What should I consider before replacing my sash windows?
Before choosing sash window replacement, consider:
- Whether your existing sash windows can be repaired instead of replaced.
- If you need new double glazed units for better energy efficiency.
- Any planning permission requirements, especially in listed buildings or a conservation area.
- The best sash window materials for durability and aesthetics.
- Your budget and potential increase in property value.
How much does sash window replacement cost in 2025?

The cost varies depending on factors like size, materials, and installation complexity. At William Richard replacing timber sash windows costs from £1,350 and upwards per window, with double glazed sash windows being more expensive but offering long-term energy savings.
Should I repair or replace my sash windows?
Consider repairing if:
- The frames are structurally sound and only need minor repairs.
- You want to retain the original character of period properties.
- You have a limited budget.
Opt for replacement if:
- The wood is rotting beyond repair.
- You want new sash windows with double glazing for better thermal efficiency.
- Your existing sash windows no longer meet building regulations.
Do I need planning permission for sash window replacement?

For most homes, no planning permission is needed. However, in listed buildings or a conservation area, you may need approval to ensure the new windows match the original traditional design. Always check local building regulations before proceeding.
How long does sash window replacement take?

The installation of each sash window usually takes one day, but larger projects may take longer. Custom bespoke sash windows require several weeks for manufacturing, so it’s best to plan ahead.

Sash Window Replacement