James Elston

James Elston

Published March 20, 2025

Last Updated on March 20, 2025

Single Pane Windows vs Double Pane: Which is Better?


When choosing new windows for your home or property, one of the most important decisions you’ll face is whether to go for single pane windows or double pane windows. Each option comes with its own set of benefits and drawbacks, and understanding the differences can help you make an informed decision. 

This guide provides a detailed comparison of these two types of windows, considering key factors such as aesthetic appeal, insulation, security, the cost of new windows, and more. 

Read on to discover which window type is the best fit for your needs.

Single Pane Windows vs Double Pane: A Quick Comparison

To help you get an at-a-glance overview of the key differences between single pane windows vs double pane windows, here’s a quick comparison table:

FeatureSingle Pane WindowsDouble Pane Windows
Aesthetic AppealTraditional, vintage lookModern, sleek, energy-efficient design
Opening MechanismTypically casement, sliding, or sash windowsAvailable in similar styles with added insulation
VentilationOffers good natural ventilationSlightly more airtight, can still be ventilated
Energy EfficiencyLess energy efficient, prone to heat lossHighly energy efficient, reduces heat loss and gain
SecurityEasier to break, less secureHarder to break, more secure
CostGenerally cheaperMore expensive due to added materials and insulation
Best Suited ForOlder homes, historic propertiesModern homes, energy-conscious renovations

Single Pane Windows vs Double Pane: Which Is Better?

Now that we’ve covered the basics, let’s dive deeper into the key features of each window type, including pros and cons.

Key Features of Single Pane Windows

  • Material: Typically made of a single layer of glass, single pane windows are often found in older homes or buildings that require preservation of historic value.
  • Performance: While affordable, they offer minimal insulation and are less energy-efficient compared to double panes.

Key Features of Double Pane Windows

  • Material: Made with two layers of glass with a layer of air or gas (such as argon) trapped between them, offering superior insulation.
  • Performance: Double pane windows are far better at insulating your home, making them ideal for energy efficiency and noise reduction.

Pros and Cons Of Single Pane Windows

Pros
  • Lower initial cost
  • Classic look, ideal for vintage homes
  • Lower efficiency, heat escapes easily
  • Provides good natural airflow
  • Easier to break and less secure
Cons
  • Poor insulation, higher heating costs
  • Prone to wear and tear
  • Less effective in reducing noise

Pros and Cons Of Double Pane Windows

Pros
  • Higher upfront cost due to advanced features
  • Sleek, modern appearance
  • Excellent insulation, reduces energy bills
  • Less ventilation but can still be ventilated
  • More secure, harder to break
Cons
  • More secure, harder to break
  • Needs careful maintenance, more expensive
  • Reduces noise significantly

Which Property Types Are Best for Single Pane Windows vs Double Pane?

Best Properties for Single Pane Windows

Single pane windows are most commonly found in older homes, including:

  • Victorian properties: Often featuring original windows that preserve the character of the home.
  • Georgian homes: Historical accuracy is a key feature in these types of properties, where maintaining the original window style is essential.

Best Properties for Double Pane Windows

Double pane windows are suitable for more modern homes, and these include:

  • New builds: Homes with a focus on energy efficiency and modern aesthetics.
  • Modernized older homes: Where energy savings and security are a priority, while still keeping a sleek, updated look.

Single Pane Windows vs Double Pane Styles

Both single pane and double pane windows are available in a wide variety of styles. These include:

  • Casement windows
  • Sash windows
  • Tilt and turn windows
  • Bay and bow windows

While double pane windows are available in these styles, they tend to offer more modern designs, while single pane windows may be more common in historic or older window types like sash windows.

View & Natural Light Intake

Both single and double pane windows provide excellent views and natural light, but the difference lies in their insulation properties. Double pane windows reduce the likelihood of condensation and fogging, which could obstruct the view. Single pane windows are more likely to suffer from condensation during colder months, potentially affecting your view.

Insulation & Energy Efficiency

Glazing Options

The main difference in terms of energy efficiency lies in the glazing options. Double pane windows offer more glazing options, which can include:

  • Low-emissivity coatings: To improve energy efficiency by reflecting heat back into the home.
  • Argon or krypton gas: Trapped between the two panes, reducing heat transfer.
  • Tinted glass: Helps control solar heat gain, keeping your home cooler in summer.
Glazing OptionSingle Pane WindowsDouble Pane Windows
Standard GlassYesYes
Low-E CoatingNoYes
Argon GasNoYes
Krypton GasNoYes
Tinted GlassNoYes

Ventilation & Draughts

Single pane windows allow for more natural ventilation, making them ideal for homes in temperate climates. However, they are more susceptible to draughts and temperature fluctuations. Double pane windows provide better insulation but may reduce ventilation slightly due to their airtight construction.

Security Features

Double pane windows offer better security due to their stronger construction. The extra layer of glass makes it harder for intruders to break in, adding an extra layer of protection. In comparison, single pane windows are easier to break, providing less security.

Maintenance & Longevity

FeatureSingle Pane WindowsDouble Pane Windows
CleaningEasier to clean but can accumulate grime between panesRequires more attention to cleaning between panes
Wear and TearMore prone to cracks and damageDurable but more expensive to repair
LongevityShorter lifespan, requires more frequent replacementLonger lifespan, ideal for long-term investment

Single pane windows generally require more maintenance due to their susceptibility to damage and poor insulation. Double pane windows, although more expensive upfront, last longer and require less frequent repair.

Costs & Installation

Window TypeCost per Window (Approx)
Single Pane Windows£50 – £150
Double Pane Windows£150 – £300+

While single pane windows are cheaper to install initially, double pane windows save money in the long term due to improved energy efficiency.

Installation Requirements & Timeframe

Double pane windows require more intricate installation and typically take longer to fit due to the added insulation and sealing. Single pane windows are quicker to install but provide fewer long-term benefits.

Which is Best for Your Home: Single Pane Windows vs Double Pane?

Choosing the right window for your home comes down to several factors, including your budget, the style of your property, and your energy efficiency goals. Double pane windows are the better choice if you’re looking to improve insulation, security, and long-term savings. On the other hand, single pane windows are better suited for historic homes or those on a tight budget.

Request a Free Quote for New Windows

If you’re ready to take the next step, request a free quote for new windows today. Whether you’re choosing single pane windows or double pane windows, we can help you select the best option for your home. Contact us now to get started!

James Elston

James Elston

Boiler Expert


James Elston is the top boiler replacement and heating expert at Eco Happy. He has over 20 years of experience in the industry, focusing on Gas Safe boiler installations and offering home-heating and energy-saving solutions to homeowners across the UK. From sourcing the most energy-efficient combi boiler to providing specialist heating advice, James ensures that Eco Happy maintains the highest standards and best customer service.

Leave a Reply

Your email address will not be published. Required fields are marked *