Glazing is one of the most important performance elements in a timber sash window and often, the most overlooked. That’s why at Clearview, we integrate high-quality options into our hardwood timber windows to deliver both efficiency and authenticity.
There’s no one-size-fits-all approach. The right glazing depends on your goals: improved insulation, reduced noise, added security, or better light diffusion. For many homeowners in Clapham and Wimbledon, the priority is energy efficiency without sacrificing heritage detail. Others, particularly in high-traffic areas like Wandsworth or Streatham, want acoustic protection from urban noise.
The most common configuration in period-sensitive environments is slimline double glazing. These units maintain narrow sightlines and can be used in narrow rebate sashes without affecting external aesthetics. When combined with warm edge spacers and low-E coatings, they significantly cut down on heat loss.
Acoustic glazing is another growing choice, particularly for homes near railway lines or main roads. This uses thicker glass or laminated interlayers to block external sound, improving comfort levels indoors, especially in bedrooms and home offices.
Some developers also choose laminated glazing for added security. It’s harder to break and stays intact even if cracked, offering peace of mind for properties with ground-floor sash windows or street-facing bays.
Obscure or frosted glazing can also be specified for bathrooms or side returns. All of these options are available with traditional glazing bar layouts, meaning your timber sash window can meet planning rules while serving a very modern purpose.
In a recent Battersea townhouse renovation, the rear kitchen extension used slimline acoustic glazing in the sash windows to reduce courtyard echo while retaining the Georgian sightlines visible from neighbouring gardens. The result was a consistent exterior with vastly improved interior acoustics.
Every window is factory-glazed and tested for performance. Our team will help you select the right combination for each elevation and room function, factoring in U-values, sound ratings and visual impact. It’s super simple and fast to for us to visit your property and give you an estimate on frame, specification and fitting. bespoke
See how our range of hardwood timber windows can deliver glazing that works as hard as the joinery, beautiful, durable, and suited to modern life.