An Elegant Solution

Secondary glazing brings quiet, warmth and style to heritage buildings suggests John Lannen.

Successful glazing is about so much more than glass. Windows define a building; bringing air and light in, and keeping the outside world at bay. On heritage and traditional properties, the styling speaks volumes yet today, we expect our properties to be warm and draught free. Thankfully, there is an answer which enables you to retain the original characteristics of your property whilst taking advantage of design, material and production advances.


Modern secondary glazing, when carefully designed and installed, balances comfort and conservation giving beauty and practicality; quiet, warmth, and style. Suitable for Conservation Areas and Grade I and II listed properties, it increases thermal and sound efficiency and enhances security.


Secondary glazing is a fully independent internal glazed unit, fitted on the room side of an existing window and invisible from outside. Manufactured from slimline aluminium and coated in one of 200 colours, it comes as fixed, horizontal or vertical sliding units to match the style and colour of the original opening.


Lower bills

Warmth is a valuable commodity and creating a second barrier to the elements reduces wasteful heat loss. The creation of an insulating layer of air is as important to keeping energy in as the fitment and seals. With the right glass, heat loss can be reduced by as much as 65 percent.* The resulting installation can exceed Building Regulations’ requirements, offering significant cost savings in the process. It’s an affordable investment with quick returns.


Sound insulation

Secondary glazing offers the most effective noise insulation available, significantly outperforming double glazing. It can reduce pollution levels by up to 80%* (50 decibels), enough to quieten noisy neighbours, a busy railway line or a rumbling motorway. In areas of high traffic noise, secondary glazing with thicker acoustic glass, fitted with a 150- 200mm air gap between the primary and secondary units, can result in improved concentration, relaxation and sleep for homeowners, greatly improving quality of life.


Peace of mind

Windows are often a weak point in building security. For homes, the benefits are clear. Unlike single windows, secondary glazing is extremely difficult to open from the outside and provides an additional physical barrier against forced entry. For commercial properties or buildings such as churches which house valuable items, vulnerable windows that are easily accessible are prime candidates which benefit greatly from the added levels of security.


Like all our products, L+L secondary glazing is covered by a ten year guarantee and free annual inspection. With over three decades of experience, we combine modern technology with traditional skills for an installation which brings superb functionality and a refined finish.


To find out more visit our showroom at Red Lane, Tewkesbury, GL20 5BQ open Monday - Thursday 8:30-5, Friday 8:30-4 and Saturday 9-1, or call 01684 295038 to arrange a free home survey. Visit


*Based on research by Chiltern Dynamics commissioned by Granada Glazing.
01684 295038




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