There are many decisions to make when choosing new windows – casement vs sliding sash, your choice of glazing, and whether to install A-rated windows or go for a cheaper option.
One of the most significant determining factors of how well your windows perform is the material of the frame. Most windows are either UPVC, aluminium, or timber.
Each frame offers different advantages and potential drawbacks concerning costs, energy efficiency, durability and visual appeal. So how do you decide?
In this blog, we compare each material to help you choose the best option for your home.
uPVC Frames
UPVC is the abbreviation for Unplasticised Polyvinyl Chloride, a type of plastic. It is used for windows due to its durability, low maintenance, and weather resistance. UPVC has different profiles, including casement, bay, tilt and turn, and sliding sash windows. Its low cost and easy cleaning have made it a favourite with homeowners for over 25 years.
UPVC is also often used in doors and conservatories.
Pros:
- Cheapest option
- Low-maintenance
- Resistant to most weather conditions
- Good thermal insulation
- It is available in an increasing selection of colours
- Finishes can mimic woodgrains
- Can be recycled
Cons:
- Some units can look cheap
- It has to be thick to accommodate the weight of the glass
- Can discolour and stain over time
- If discolouration occurs, restoration is very difficult
- Usually don’t last as long as the alternatives (around 20-25 years)
- Can warp over time
- It’s less durable than aluminium in extreme weather conditions
Ideal Application:
While heritage UPVC windows can blend into period properties, even listed buildings, most UPVC windows are better suited to a modern home.
Aluminium Frames
Aluminium has replaced steel and (long ago) iron as the main material for metal frames. Strong yet lightweight, aluminium is prized for its versatility – frames can be made virtually any size, making it ideal for windows and doors.
Pros:
- Very strong and durable
- Long-lasting (around 45 years)
- Weather-resistant
- Doesn’t rust
- Low-maintenance
- It can be made to any size, allowing for ultra-slim frames
- It can be custom-sprayed in 150+ RAL colours
- Lightweight so it costs less to transport
- Abundant natural material
- Eco-friendly manufacturing
- Infinitely recyclable
Cons:
- More expensive than UPVC
- There is the potential for thermal bridging if it is not properly insulated
Ideal Application:
Aluminium frames can work in both period and contemporary properties. Metal frames are elegant and incredibly versatile, fitting into most aesthetics. Our slimline aluminium windows have almost infinite applications.
Wooden Frames
Wooden or timber frames are wood that has been sealed and treated to increase its durability and weather resistance. Beautiful, sustainable, and timeless, timber windows are popular for period homes and eco-conscious customers.
Pros:
- Natural insulator
- Authentic appearance
- Timeless and sophisticated
- Often cheaper than aluminium (depending on the wood used)
- Can be waxed, painted or stained before or multiple times after installation
- Recyclable
Cons:
- Require more maintenance
- Can crack, rot or warp if not treated properly
We offer timber casement and sliding sash timber windows in:
- Meranti – inexpensive hardwood with a 10-year guarantee
- Sapele – mid-range more durable hardwood that can last 30 years with proper care
- Accoya – more expensive durable softwood with a 50-year guarantee
Ideal Application:
Wooden frames can enhance the look of a period property or add character to a newer build. However, they do require more care and attention to keep them looking their best and functioning properly.
Comparative Chart for Frame Materials
Criteria | UPVC Frames | Aluminium Frames | Wooden Frames |
Longevity and Durability | Moderate: Typically lasts 20-25 years with minimal maintenance. | High: Can last 40+ years with proper maintenance. | Moderate to High: Can last 15-50 years depending on the wood, and level of care. |
Maintenance Requirements | Low: Requires only occasional cleaning and checks for seal integrity. | Low to Moderate: Needs periodic cleaning and checks for oxidation or anodization. | High: Regular treatment is needed to prevent rot, warping, and pest infestation. |
Thermal Efficiency | Good: Offers excellent insulation but the quality varies between manufacturers and profiles. | Moderate to Good: Thermally broken aluminium frames offer enhanced insulation. | Excellent: Natural insulator offering superior thermal properties. |
Cost-Effectiveness | High: Generally the most affordable option upfront. | Moderate: More expensive initially but less likely to need replacement. | Low: Timber frames can be expensive upfront and also have higher ongoing maintenance costs. |
Aesthetic Flexibility | Moderate: Comes in limited colours and finishes but choice is increasing. It can also be painted. | High: Available in a wide range of finishes and custom colours. | High: Can be painted or stained to match any aesthetic. |
Eco-friendliness | Moderate: High emissions during manufacturing but can be recycled. | Excellent: Aluminium has lower emissions than UPVC and is infinitely recyclable. | Good to Excellent: Can be sustainably sourced, absorbs CO2 during growth and can be recycled. |
Comparative Analysis:
As you can see from the chart above, there isn’t a standout winner. It all depends on your requirements and priorities. For example, UPVC windows are the cheapest and require the least work, but they don’t last nearly as long as the alternatives. Wooden windows are expensive and require a lot of work but have more curb appeal. For some, aluminium windows provide a happy medium.
Conclusion
When choosing your windows, consider the upfront cost versus the maintenance costs. You must also decide whether an authentic appearance is more important than easy cleaning and a lack of significant upkeep.
All our windows are attractive, energy-efficient, and meet British security standards, so it comes down to personal preference.
Get In Touch Today
At Manchester Window Factory, we are experts in providing and installing the highest quality UPVC, aluminium and timber windows. We can talk you through your options and offer a free, no-obligation quote for your consideration. We also offer a pay monthly scheme to help you spread the cost. If you would like further information on any of our products or services, please don’t hesitate to get in touch.
We look forward to hearing from you!
