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What is the cost of triple-glazed double windows?
Although the price of installing triple-glazed double windows varies significantly, they typically cost 10-30 percent more than similarly rated double-glazed windows. This is quite reasonable when considering they include an extra layer of glass and a gas-filled cavity.
On average, a single triple-glazed double window can cost anywhere from £400 to £800, but this is just a baseline. The material of the window greatly affects the price, with unplasticized polyvinyl chloride (uPVC) being the most cost-effective option, while aluminum and wooden windows are more expensive.
Also, the style of the window – whether it is a casement window, tilt and turn window, sash window, or bay window – impacts the cost.
What factors affect the cost of triple-glazed double glass?
The cost of triple-glazed double glass is influenced by various factors, ranging from the window style and frame material to installation considerations.
Window frame style:
- Casement window: This is the most common type known for its versatility and simplicity. It opens outward, making it easy to use and cost-effective.
- Sash window: Sash windows are synonymous with traditional architectural styles. They consist of one or more movable panes that create a classic aesthetic suitable for period properties. The exclusivity and complexity of their design often lead to an increase in cost.
- Tilt and turn window: These windows tilt inward for ventilation and turn like a casement window for easy cleaning. Specialized hinges and locking systems contribute to their higher cost.
Material choice:
- Unplasticized polyvinyl chloride (uPVC): Unplasticized polyvinyl chloride is a widely selected window construction material known for its affordability and low maintenance. It is durable, weather-resistant, provides good thermal insulation, and does not rot or decay like wood.
- Wood: Wooden frames, often chosen for their classic and aesthetic appeal, tend to be more expensive than unplasticized polyvinyl chloride. They offer excellent insulation and can last for decades if properly maintained. However, they require regular painting or sealing to protect them from the elements. The cost of wooden frames can vary significantly depending on the type of wood, with pine, oak, and engineered wood being commonly used materials.
- Aluminum: Aluminum frames are known for their strength, modern appearance, and longevity. They require low maintenance, resist corrosion, and are lighter than wood but strong enough to carry large glass panels. Aluminum frames are more expensive than unplasticized polyvinyl chloride.
Gas filling between panes:
- Argon: Argon is the most common fill gas used in triple-glazed double windows. It is colorless, odorless, non-toxic, and, importantly, has 34 percent lower thermal conductivity than air, making it an effective insulator.
- Krypton and xenon: These gases provide superior thermal insulation but are more expensive than argon. Krypton and xenon have even lower thermal conductivity than argon, enhancing the window’s ability to retain heat. They also provide better sound insulation than argon.
Ease of installation:
Installation costs vary based on how accessible the windows are. Windows in hard-to-reach areas, such as those on upper floors or obstructed by external structures, require more scaffolding and specialized equipment for installation, increasing labor costs.
Removal
Existing windows:
The cost of removing existing windows is an important consideration. Some providers may include waste removal in their quotes, but if not, homeowners may need to arrange and pay for the disposal of the old windows separately. Be wary of this hidden cost.
Additional factors affecting the cost of triple glazing:
- Geographical location: Installation costs can vary by region, with London and the South East of England seeing the highest costs.
- Fixtures and features: Additional components such as handles and locking mechanisms affect costs.
- Warranty and aftercare services: Longer warranty periods and aftercare services can add value but may also impact the initial cost.
How to get a quote for triple glazing windows?
When it’s time to get quotes for triple glazing windows, consider the following steps:
- Conduct preliminary research: Search online for reputable triple glazing providers. Focus on those specializing in residential properties and having extensive experience in installing triple glazing. Websites, portfolios, and customer reviews are valuable resources for this preliminary research. A proven track record and a transparent, comprehensive portfolio are good signs of a reputable company.
- Read reviews and ratings: Use platforms like Trustpilot, Yell, and Google Reviews to assess the reputation of these companies. Look for feedback on work quality, customer service, and after-sales support. This information will provide insight into the credibility and professionalism of the providers.
- Evaluate experience and specialization: Prioritize companies with a solid history in the industry. Experience across a range of property types, from traditional homes to modern houses, indicates provider diversity.
- Contact providers for assessments: Reach out to your shortlisted companies to request an in-home assessment. Reliable providers often offer free initial consultations where they can evaluate your specific needs and discuss options. Don’t feel pressured to agree to anything upfront.
- Request tailored assessments and site visits: A detailed assessment should include a site visit to take precise measurements and evaluate the installation environment. This step is crucial for customizing the quote to your specific home requirements.
- Compare quotes: When you receive the quotes, compare them in detail. Look beyond the price – consider material quality, warranty terms, company experience, and the comprehensiveness of their service.
- Verify credentials and certifications: It is essential to ensure that the providers are certified by industry bodies such as the Glass and Glazing Federation and the Self-Assessment Scheme or FENSA (Fenestration Self-Assessment Scheme). These credentials ensure they adhere to the highest industry standards.
- Ensure compliance with local regulations: Make sure the provider is familiar with local building regulations and planning permissions, especially if you live in a conservation area or a listed building.
- Negotiate and confirm the quote: Communicate with the provider to understand every aspect of the quote. Feel free to negotiate or request clarification on any part of the offer that seems unclear or unnecessary.
Things to check in a triple glazing window quote
When seeking quotes for triple glazing windows, ensure that the information you gather from each company is comparable. So what questions should you ask?
- Technical survey and drawings: When obtaining a comprehensive quote for the entire home, it should start with a full technical survey, including detailed drawings. This ensures that all parties understand the scope of work clearly.
- Product details: Look for complete information about the product – size, style, color, etc. This helps you understand exactly what you are receiving a quote for.
- Number
- Windows: The quote should specify the number of windows to be installed or replaced.
- Energy efficiency ratings: The quote should include important metrics such as energy efficiency ratings and U-values for the glass. These values indicate the efficiency of the windows and their thermal insulation properties.
- Additional features: Details about any additional features, such as types of handles, locks, and exterior window trims, should be mentioned. This is important as the costs of additional features can add up quickly.
- Timeline: The quote should clearly specify start and end dates for the work, giving you an idea of how long the project will take.
- Disposal of old windows: It should be specified whether the disposal of old windows is included in the service.
- Warranties and availabilities: Look for details about warranties for installation and availabilities for the materials used. This ensures the quality of workmanship, longevity of the work, and materials.
- Company details and credentials: Finally, the quote should include comprehensive details about the company and any relevant industry credentials, indicating the credibility and reliability of the service provider.
Do the benefits justify the increase in cost for triple-glazed windows?
Triple-glazed windows have significantly improved thermal insulation performance over double-glazed windows, potentially reducing heating bills and keeping your home warm in winter and cool in excessive heat.
They also provide significantly better sound insulation and are sturdier and safer. But is triple glazing truly worth all the hassle?
A warmer home with superior thermal efficiency:
Triple-glazed windows greatly enhance thermal efficiency thanks to lower U-values, which can range between 0.6 to 1.2 W/m²K. This means that triple glazing can increase insulation efficiency by up to three times compared to double glazing rated B or C. Even when compared to double glazing rated A with U-values around 1.2 W/m²K, triple glazing is 40-50% more efficient.
Energy savings:
The enhanced value of triple-glazed windows directly affects energy consumption. For example, if a property typically loses 20% of its heat through the windows, upgrading to triple glazing, which is 40% more efficient than double glazing, could lead to significant energy savings. This could result in savings of about £63.20 annually, assuming an average gas heating bill of £792.35, although savings could be higher when upgrading from less efficient windows. As heating bills increase, triple glazing will provide further savings.
Improved sound insulation:
Triple-glazed windows provide remarkable noise reduction capabilities. The additional pane and gas-filled cavities can reduce external noise by up to 10 decibels more than double glazing. This level of sound insulation can transform the acoustic environment of a home, especially in areas with high noise levels.
Environmental impact:
Triple-glazed windows contribute to reducing carbon footprint by improving heating efficiency in the home. This reduction in energy required for heating aligns with sustainable living goals and environmental conservation efforts. A study from Glassonweb indicates that the lifetime carbon savings of triple-glazed windows exceed the increase in carbon emissions during manufacturing. In Europe, the carbon payback period is about 35 to 76 months. The colder the weather, the faster triple-glazed windows become carbon-neutral.
Benefits
For new buildings and expansions:
Triple-glazed double glazing is more cost-effective in new buildings or expansions that do not require replacing existing windows. Since there is no need to remove and dispose of old windows, labor costs are reduced. Additionally, triple-glazed windows can improve the energy rating of the property, enhancing its marketability.
Summary
The prices of triple-glazed double glazing have decreased in recent years, making them more attractive to homeowners looking to upgrade or replace their windows. The costs are only about 10 to 30 percent higher than double-glazed windows, making them a strong investment in many cases. Although the initial cost is higher than that for double glazing, the advantages of triple-glazed double glazing – from superior thermal efficiency and energy savings to noise reduction and improved property value – make them worth considering. As with any home improvement, thorough research and obtaining detailed quotes while comparing costs against long-term benefits is essential for making an informed decision.
Frequently Asked Questions About the Cost of Triple-Glazed Windows
How long does it take to recoup the cost of triple-glazed windows?
The time it takes to recoup the cost of triple-glazed windows depends on several factors, including the efficiency of the previous windows, the insulation of the home, and typical energy usage. Homeowners may start to see a return on their investment within several years, with further savings accumulating over time. The time will be reduced further if they qualify for any government window grants. When considering the cost of triple-glazed windows, it is important to take into account the immediate and long-term benefits.
Does triple glazing improve property value?
Yes, triple glazing can enhance the value of your property. Properties with triple-glazed windows are often more attractive to potential buyers due to improved energy efficiency, comfort, and noise reduction. This can be a significant advantage in the real estate market. The prices of triple-glazed windows have decreased significantly over time.
Are there any additional maintenance costs for triple-glazed windows?
Generally, triple-glazed windows require the same amount of maintenance as double-glazed windows. They are designed to be durable and long-lasting. However, it is important to ensure regular cleaning and periodic inspections of seals and mechanisms to maintain their efficiency and lifespan. The chosen frame affects maintenance, with unplasticized polyvinyl chloride (uPVC) and aluminum requiring less maintenance, whereas wood requires staining and painting every few years.
Sam Jeans
An experienced writer specializing in home improvement and renewable energy, as well as technology, with a strong interest in the world of machine learning and artificial intelligence. He has written for Vested, Age Times, and Royal Mint. For Independent Advisor, Sam writes about windows and solar panels.
Source: https://www.independent.co.uk/advisor/windows/triple-glazed-windows-cost
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