Your Local Timber Sash Window Specialists

New Timber Sash Window Installations Belfast

Upgrade your home with beautiful, energy-efficient timber sash windows, crafted to suit Belfast’s unique architectural style. At Sash Windows Belfast, we design and install new sash windows that combine traditional craftsmanship with modern performance.

Traditional Look, Modern Benefits

Our sash windows are built to last — combining elegant period styling with discreet upgrades for comfort and efficiency. Each installation delivers:

• Authentic heritage detailing

• Smooth sliding operation

• Excellent thermal performance

• Long-lasting timber frames

Made to Measure for Your Home

No two properties are the same. All our windows are custom-made to match your home’s character and dimensions perfectly.
Choose from:

• Slimline double or single glazing

• Hardwood or softwood frames

• Custom paint finishes and ironmongery

Belfast Sash Window Specialists

Whether you’re replacing tired frames or adding period character to a renovation, we deliver premium sash window installations across Belfast and surrounding areas.

Contact us today to arrange a free survey and quotation.

Our Installation Process

1. Survey & Design – We assess your property and advise on the best options.

2. Manufacture – Your windows are crafted to order using quality timber.

3. Expert Fitting – We install with care, ensuring a clean, precise finish.

4. Final Detailing – Sashes are balanced, draught-sealed, and ready to use.

Sash Window Renovation – Double Glazed Upgrades Belfast

Renovate your existing windows without replacing the entire frame. At Sash Windows Belfast, we specialise in replacing old sashes with new, double-glazed timber sashes — preserving your home’s character while improving comfort and efficiency.

Upgrade, Don’t Replace the Whole Window

This renovation method keeps your original box frames in place and fits brand-new sashes with slimline double glazing.
It’s the ideal solution for:

• Period homes that need better insulation

• Listed or conservation properties (subject to approval)

• Reducing draughts and noise without altering the appearance

Benefits of Sash Renovation

• Improved thermal performance → warmer rooms, lower bills

• Retain original features → ideal for heritage properties

• Less disruption than full replacement

• Smooth sliding operation with new cords, weights & seals

• Slimline double glazing designed to look like traditional glass

Our Renovation Process

1. Survey & Assessment – We check frames to ensure they’re suitable for new sashes.

2. Bespoke Sash Manufacture – New double-glazed sashes are crafted to match your originals.

3. Installation – Old sashes are removed; new sashes are fitted, balanced, and sealed.

4. Finishing Touches – We draught-proof and prepare windows for painting or decoration.

Local Experts in Heritage Window Renovation

This service is perfect if your existing frames are in good condition but the old sashes are single-glazed, draughty, or painted shut. We operate throughout Belfast and surrounding areas, bringing traditional homes up to modern standards.

Contact us today to arrange a free sash renovation survey and quotation.

Sash Window Refurbishment Belfast

Timber sash windows are built to last — but over time, they can become draughty, stiff, or suffer from paint build-up and timber decay.
At Sash Windows Belfast, we restore original windows to full working order while preserving their authentic character.

Why Refurbish Instead of Replace?

Refurbishing is often the most cost-effective way to improve comfort and appearance without losing period charm. A professional refurbishment can:

• Eliminate draughts and rattles

• Restore smooth sliding operation

• Repair decayed timber without full replacement

• Upgrade energy efficiency with discreet draught seals

• Retain original heritage details

Our Refurbishment Process

1. Inspection & Assessment – We check frames, sashes, cords, and glass.

2. Timber Repairs – Rotten sections are removed and spliced with matching hardwood.

3. Sash Overhaul – Sashes are removed, stripped, balanced, and re-corded.

4. Draught-Proofing – Quality seals are fitted for insulation and noise reduction.

5. Finishing Touches – Windows are reinstalled, primed, and prepared for decoration.

Benefits of Refurbishment

• Warmer, quieter rooms

• Lower energy bills

• Extended lifespan of original windows

• Improved security and smooth operation

• Preserved period character

Local Specialists You Can Trust

Based in Belfast, we work on period homes, listed buildings, and traditional properties across the surrounding areas.
Whether it’s one window or a full house, our skilled team delivers quality workmanship you can rely on.

Contact us today to arrange a free inspection and quotation.