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Our final day is 23rd Dec. We reopen on the 2nd January. Sales Enquiries can be made via the website or answer-phone. Emergency service calls contact 01264 359355

Triple Glazing Winchester

Q: Is triple glazing suitable for period properties in Winchester?

Absolutely. We understand that Winchester has a rich stock of Victorian and Georgian homes. We offer specialist “heritage” triple glazing options, such as flush sash windows and wood-effect finishes, that mimic the aesthetic of traditional timber. These units allow you to retain the character of your historic property while achieving modern A+ energy efficiency.

Q: Do I need planning permission to install triple glazing in Winchester?

For most residential homes in Winchester, replacing windows falls under “Permitted Development” rights, so planning permission is not usually required. However, if your property is a Listed Building or located within a designated Conservation Area (such as the city centre or St. Cross), restrictions may apply. We recommend checking with Winchester City Council, and our team can assist you with compliance advice.

Q: How effective is triple glazing at stopping condensation?

Triple glazing is the most effective solution for condensation. Because the internal pane of glass is insulated by two other panes and gas-filled cavities, it stays much closer to room temperature than double glazing. This eliminates the “cold spot” where moisture in the air condenses, keeping your windows dry and reducing the risk of damp or mould on your sills.

Q: Will triple glazing reduce noise from the M3 or railway lines?

Yes, significantly with the right glass. If you live near the M3 corridor, the railway station, or a busy road like St. Cross, triple glazing is highly effective. By using different thicknesses of glass and a gas-filled cavity, our units can disrupt sound waves more effectively than standard double glazing, reducing external noise by up to 40dB to create a quieter, more peaceful home.

Q: Is triple glazing worth the investment for a Winchester home?

While the initial cost is higher than double glazing, the return on investment is strong. Winchester homes typically command high values, and improving your Energy Performance Certificate (EPC) rating makes your property more attractive to future buyers. Furthermore, the superior insulation locks in heat, leading to immediate and long-term savings on your energy bills.

Enhance your property with the finest triple glazing Winchester has to offer. From the historic city centre to the surrounding countryside, we specialise in high-performance window installations that respect your home’s character. Our advanced triple-glazed units provide exceptional noise reduction and thermal retention—perfect for keeping Winchester’s period properties warm and modern builds energy-efficient. Trust our local experts to deliver A+ rated performance without compromising on style

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Benefits of Triple Glazing

Why Upgrade Your Winchester Home?

Significant Energy Savings: Triple glazing delivers superior thermal efficiency compared to standard double glazing, achieving ultra-low U-values. This design locks in heat, helping to lower your heating bills and keep your home comfortable, even during the coldest winter snaps.
Superior Noise Reduction: Enjoy a peaceful sanctuary by reducing external noise by up to 40dB with acoustic glass. Whether you are located near the M3 corridor or in the bustling city centre, our acoustic glass options significantly dampen traffic and street noise for a quieter living environment.
Enhanced Security: With a third pane of toughened glass and robust internal beading, our units act as a formidable deterrent against intruders. This extra layer of defence provides peace of mind that your home and family are well-protected.
Condensation Control: Advanced insulation minimizes the “cold spot” effect on the internal pane, virtually eliminating condensation. This helps protect your property’s interior decor and reduces the risk of damp or mould developing on window sills.
Weather Resistance: Our triple-glazed units are engineered to withstand the elements, ensuring your home stays draught-free and watertight regardless of the changing seasons.
Increased Property Value: Upgrading your home’s EPC (Energy Performance Certificate) rating is a smart investment. High-performance windows make your property more attractive to future buyers in Winchester’s competitive property market.

Improved security protection

Enhanced sound insulation

Comfort and stability

Excellent energy efficiency

Utilises modern technology

Longevity and durability

Keep your Winchester home Cooler and Warmer

u-Values - Thermal Performance

Not all triple glazing is the same. For maximum efficiency, the gap between the panes is just as important as the glass itself.

The Gold Standard: 44mm Units

Our premium option uses a massive 44mm sealed unit. This allows for two optimum 16mm cavities filled with Argon gas. This specification fits perfectly into our Sheerline Prestige, Residence 9, and Residence 7 systems, delivering centre-pane U-values as low as 0.5 W/m²K.

The Slimline Option: 28mm Units

Some window profiles cannot accept a 44mm unit. For these, we offer a 28mm triple glazed unit using Krypton gas. Krypton performs better in smaller gaps than Argon, allowing us to achieve excellent thermal performance (U-value 0.60) even in a slimmer profile. Beware this comes with a hefty price tag.

Why Choose KJM For Triple Glazing?

Here at KJM, for over 42 years, we have been committed to providing our customers with the best possible products and services. Our team of experts is on hand to give advice and guidance, helping us to choose the right triple glazing solution for your Winchester home. We will work with you to understand your unique needs and requirements, and we will provide you with a range of options to choose from. Our quality of work is proven by us being a Which? Trusted Trader, and we are proud to be a CheckATrade member.

Improved Security

Improved security over double glazed windows, due to the extra pane of toughened glass. Internally glazed windows offer added security and prevents the removal of the glass from the outside.

Sound Insulation

There is no major gain having triple glazing with three equal thicknesses of glass. The best solution would be with a thicker centre pane, please enquire for further information.

Heat Insulation

44mm sealed units filled with two 16mm cavities of argon gas. Argon gas is heavier than air, so acts as an insulator

Prevent Cold-Bridging

Warm edge spacer bars made from a composite material to stop the cold-bridge across the unit.

Low-emissivity Glass

Two coatings of low-emissivity glass (Low E). This is a microscopically thin coating that stops the heat from your house going outside.

No Pressure Promise

No Pressure Promise KJM’s sales team are employed and work for you not the job. Quotes are free and we don’t normally price in the home. This will be emailed to you for you to peruse at your leisure.