Benefits of Secondary Glazing
Protecting Basingstoke’s History
While often thought of as a modern town, Basingstoke has rich pockets of history. From the Grade II listed cottages in Old Basing to the Victorian conservation areas of Brookvale and Fairfields, preserving the original character of these homes is a priority.
Our Slimline Secondary Glazing is the ideal solution for properties under strict planning controls. Because the units are installed within the window reveal and do not involve removing the original timber frames, they are considered a reversible adaptation. This is widely accepted by Basingstoke and Deane Borough Council conservation officers as a permitted improvement where replacing the windows entirely would be rejected.
We offer bespoke styles to match your home, including Vertical Sliders for classic Victorian sash windows and hinged units for casements, ensuring your home looks exactly as it should from the street.
Sound proofing
Acoustic Performance
Silence the M3 & Train Line Noise
Basingstoke is a hub of connectivity, but that comes with a cost: noise. Whether it’s the constant hum of the M3, the traffic on the A339 Ringway, or the trains on the main London line, external noise can be a major disruption to home life.
Secondary glazing is the single most effective way to soundproof existing windows. By installing a secondary pane with a cavity of 100mm to 200mm from the primary glass, we create a “decoupling” effect that stops sound vibration in its tracks.
When combined with our specialist acoustic laminate glass (Stadia Silence), we can reduce noise levels by up to 80% (54dB). This transforms a noisy property near the station or Ringway into a peaceful sanctuary.
Keep the heat in
Thermal Efficiency
Warmer Homes & Lower Bills
Many of the beautiful Victorian terraces in areas like Fairfields are notorious for being cold. Original sliding sash windows, even when well-maintained, allow warm air to leak out and cold draughts to rush in.
Our secondary glazing creates a fully sealed internal barrier. Using advanced twin brush seals, it clamps tight against the frame to eliminate draughts instantly. This setup can reduce heat loss through the window aperture by over 60%, significantly improving your home’s Energy Performance Certificate (EPC) rating.
Crucially, it also combats condensation. By keeping the inner glass warm, it prevents the moisture buildup that often leads to black mould on timber sills—protecting your windows and your health.
Trading for over 40 years
Why choose KJM?
Why Choose KJM Group for your Heritage Home? Since 1983, KJM Group has been trusted by owners of listed buildings across Hampshire. Unlike general window fitters, we understand the nuances of conservation work. We don’t just “fit windows”; we engineer solutions that respect the history of your property.
We operate on a strict “No Pressure Promise.” Our team is salaried, not commission-based, meaning our only goal is to find the right acoustic and thermal solution for your home, not the most expensive one. We are a Which? Trusted Trader, fully fully accredited, and every installation comes with our comprehensive 10-year insurance-backed warranty.
Secondary Glazing Prices Basingstoke
Are you thinking about secondary glazing for your Basingstoke home? Then, we are the team for you at KJM Group, with over 40 years of experience in home improvements and 80% of our work coming through recommendations or existing customers returning. Speak to our team today for a secondary glazing price by using our contact form or by giving us a call at 01264 359355.
You can also visit our showroom in Andover, Hampshire, to see our products firsthand. One of our expert team members can guide you through our selection and help you find the right one.
Secondary Glazing FAQ's
Do I need planning permission for secondary glazing in Basingstoke?
Generally, no. Secondary glazing is considered a reversible internal adaptation that doesn’t affect the external appearance of the building. This means it is usually accepted by Basingstoke and Deane Borough Council for properties in conservation areas (like Old Basing or Brookvale) and Grade II listed buildings without requiring full planning permission.
Will secondary glazing block the noise from the M3 or the railway line?
Yes, it is the best solution for these specific noise issues. By creating a large air cavity (100mm+) and using acoustic glass, we can reduce noise pollution by up to 80% (54dB). This is highly effective for homes near the M3 corridor, the Ringway, or the main London-bound railway line.
Can I still open my sash windows for fresh air?
Absolutely. We design our secondary glazing to mirror the opening style of your existing windows. For the Victorian sash windows found in Fairfields and Brookvale, we install balanced vertical sliders that slide up and down just like the originals, allowing full ventilation and easy cleaning.
Will it stop the condensation on my bedroom windows?
Yes. Condensation is a common problem in Basingstoke’s older housing stock. Secondary glazing creates a sealed internal barrier, keeping the inner glass warm and preventing moist air from hitting the cold outer pane. This stops water pooling on your sills and prevents black mould growth.
Do you install in the villages around Basingstoke?
Yes. Our team works extensively across the borough. We regularly install secondary glazing in the surrounding villages, including Oakley, Overton, Whitchurch, and Odiham, ensuring rural properties get the same thermal and acoustic benefits as town centre homes.