How Much Do Single Pane Windows Cost?

Single pane windows, featuring just one layer of glass, are a basic and budget-friendly option for UK homes, often found in older properties or outbuildings like sheds and garages. While less energy-efficient than double or triple glazing, they offer simplicity and affordability, making them suitable for non-heated spaces or heritage restorations. In 2025, with material and installation options evolving, single pane windows remain a practical choice in specific scenarios. This guide explores their costs, benefits, and key factors to consider for installation or replacement in the UK.

Single pane windows often go unnoticed—until they crack, rattle, or let in the cold. Estimating their replacement cost is straightforward due to their simple design, but variables like size and material still play a role. Whether you’re maintaining a listed building or outfitting a workshop, understanding the pricing is essential.

Typical Single Pane Window Costs by Size

The cost of single pane windows varies by size and frame material. Below is a table showing typical dimensions and cost ranges in the UK for 2025 (including standard installation):

Width (mm)	Height (mm)	Style	Cost Range (uPVC)	Cost Range (Timber)
600	900	Casement	£150-£250	£250-£400
900	1200	Casement	£200-£300	£350-£500
1200	1500	Fixed	£250-£350	£400-£600
1500	1800	Fixed	£300-£450	£500-£750

In the UK, single pane window costs typically range from £150 to £750 per window, depending on size, material, and style. Their simplicity keeps prices low, but exposure to weather—rain, wind, or frost—can lead to wear. If yours are cracked or draughty, replacement might be a quick fix.

Material Cost Comparison

Before opting for single pane windows, it’s wise to consider your needs. What’s the installation cost, and which material fits your purpose? Your choice depends on budget, maintenance, and whether insulation matters. Here’s a table comparing materials for a standard 900mm x 1200mm single pane casement window:

Material	Cost Range	Pros	Cons
uPVC	£200-£300	Cheap, low maintenance	Basic look, poor insulation
Aluminium	£250-£400	Durable, slim frames	Cold to touch, less insulating
Timber	£350-£500	Traditional charm, slight insulation	Needs regular upkeep

How much do single pane windows really cost? Their simplicity keeps expenses down, but upgrades like safety glass or custom frames can add to the price. uPVC is the go-to for affordability, aluminium offers durability, and timber suits heritage aesthetics.

Factors Affecting Single Pane Window Costs

Considering repairs instead? A broken pane or loose frame might not need a full replacement—repairs typically cost £50-£150, depending on damage. But if energy efficiency or noise is a concern, upgrading to double glazing might be wiser. Here’s what drives single pane window costs:

Factor	Description	Impact on Cost
Size	Larger windows use more glass	Adds £50-£150 per size increase
Glass Type	Standard vs. tempered/safety glass	Safety glass adds £20-£50
Material	uPVC, aluminium, timber	See material table
Labour	£80-£150 per window	Higher in urban areas
Style	Fixed vs. operable (e.g., casement)	Operable adds £20-£50

Repair or replace? If your single pane window is intact and insulation isn’t a priority, a repair might do. But if cold drafts or noise are issues, replacement—or an upgrade—offers better comfort. A pro can help you decide.

Additional Installation Costs

Choosing single pane windows is about cost and context. Need a cheap fix or a heritage match? uPVC keeps it simple, aluminium adds strength, and timber brings authenticity. Here’s a breakdown of extra costs:

Expense	Typical Cost	Notes
Removal of Old Window	£30-£100	Depends on condition
Scaffolding	£150-£300	For upper floors
Building Regulations	£50-£100	FENSA if applicable
Finishing (e.g., trim)	£20-£50 per window	Optional aesthetic work

Materials affect cost and care—uPVC is low-maintenance, aluminium is sturdy, and timber needs upkeep for its look. Adding safety glass or custom fittings bumps costs slightly. A typical replacement might total £200-£900 with extras.

Return on Investment (ROI)

Single pane windows offer minimal savings but serve a purpose—here’s how they pay off:

Benefit	Estimated Savings/Value	Timeframe
Energy Savings	Negligible	Poor insulation limits savings
Property Value Increase	0-1% of home value	Upon resale, if heritage appeal
Payback Period	N/A	Cost-driven, not efficiency

Final Thoughts

Single pane window costs in 2025 range from £150 for a small uPVC unit to £750 for a large timber one. Size, material, and installation extras shape the price, but their affordability and simplicity suit specific uses like outbuildings or heritage preservation. Get three quotes from FENSA-registered installers if regs apply—single pane windows are a low-cost option for UK homes where insulation isn’t key.