Glass
We offer a wide range of glass solutions to cater to your privacy, security, and design needs. Whether you're looking for energy efficiency, soundproofing, or preserving the aesthetic integrity of heritage properties, our selection of glass types ensures the perfect fit for any application.
Our selection includes double glazing, Single glazing, Slimline/Heritage, toughened, laminated, acoustic, Vaccum, frosted and obscured glass. Special options such as stained, can also be accommodated.
Double glazing is the most popular choice for our Sash Windows, Casement Windows, and Doors.
Double Glazing works by trapping a layer of insulating gas between two panes of glass, helping to retain heat inside during the winter and keep heat out during the summer. Warm edge spacers are used to seperate the glass panes, they contain very little metal compared to traditional aluminium spacers, meaning they conduct less heat or cold, thereby maintaining the temperature inside your property.
The most efficient glass for double glazing is low emissivity (Low-E) glass. This type of glass has a special, invisible metal oxide coating that allows sunlight to pass through while reflecting infrared (heat) energy back to its source. It reflects interior heat back inside during the winter and reflects heat away in the summer. This helps maintain a consistent indoor temperature while effectively preventing heat from escaping. The Low-E coating also helps to block harmful ultraviolet (UV) rays, reducing the risk of fading for furniture, carpets, and other interior furnishings. Various gases, such as argon, krypton or xenon can be used in the space between the glass panes. We use Argon because it is highly effective in reducing heat loss and achieving the required U-value. In situations where glass thickness is restricted, other gases such as Krypton or Xenon can be used, although they come at a higher cost.
Double glazing also minimises noise pollution and condensation.
Our double-glazed units are typically 24 mm thick, comprising 4mm clear glass, a 16mm argon-filled cavity, warm-edged thermal spacers, and 4mm low emissivity K glass. This combination offers excellent U-values as low as 1.2 W/m²K.
For new installations into existing frames, we can tailor the glass thickness to fit the cavity of your existing frame.
We also offer 16mm thick units to comply with conservation area requirements.
Choose From a Variety of Glass Options
Slimline/heritage glazing
For heritage properties, our slimline glazing options are ideal, offering modern insulation benefits while preserving the original aesthetic. Available in thicknesses ranging from 9mm to 16mm, these units can fit into narrow rebates without major alterations and are often permissible for listed buildings. The U-values of these slimline units vary depending on the Krypton gas cavity size, ranging from as low as 1.1 to 1.9 W/m²K. This offers significant thermal improvements over single glazing, which typically has U-values around 5.0 W/m²K or higher. Our slimline glazing enhances thermal insulation, noise reduction, and condensation control, while ensuring compliance with building regulations that mandate the preservation of historical buildings.
Single Glazing
Single glazing, which often does not meet current thermal standards with typical U-values of 5.0 W/m²K or higher, is typically only permitted for listed buildings. This is because preserving the historical aesthetic is paramount for these structures.
Vacuum Glass
LandVac™ vacuum glass works by creating a vacuum layer between two glass panes, effectively eliminating air and, consequently, thermal conduction and convection within the gap. This vacuum layer, usually only a few micrometres thick, significantly reduces heat transfer, providing thermal insulation that far surpasses traditional double glazing. The specifications of LandVac™ glass typically include a glass thickness ranging from 6mm to 10mm, with a vacuum gap of around 0.1mm. This slim profile allows for easy integration into existing window and door frames without requiring substantial modifications. LandVac™ glass also features a high-performance Low-E coating, further enhancing its insulating properties by reflecting infrared energy. The result is a glazing solution with U-values as low as 0.4 W/m²K, offering exceptional energy efficiency, reduced condensation, and superior sound insulation. With a profile of only 6.7mm, it is the perfect solution for owners of historic properties seeking an energy-efficient window option that can meet planning approval requirements (subject to your council/boroughs regulations).
Toughened Glass
Toughened glass, also known as tempered glass, is an excellent choice for timber windows and doors due to its superior strength and safety features. This type of glass undergoes a specialised heat treatment process, making it up to five times stronger than standard glass. It is designed to shatter into small, blunt pieces rather than sharp shards, significantly reducing the risk of injury. Toughened glass is ideal for areas where safety and durability are crucial, such as in patio doors, low-level glazing, and large windows.
Acoustic Glass
Acoustic glass is an excellent choice for timber windows and doors when noise reduction is a priority. This specialised glass is designed to significantly reduce sound transmission while maintaining the same thermal insulation benefits as standard double glazing. Acoustic glass typically consists of two or more layers of glass bonded together with an interlayer that dampens sound vibrations. It is ideal for use in homes and buildings located in noisy areas.
Laminated Glass
Laminated glass offers enhanced safety, security, and acoustic insulation. This type of glass consists of two or more layers of glass bonded together with an interlayer, typically made of polyvinyl butyral (PVB). This interlayer holds the glass in place even when shattered, preventing dangerous shards from causing injury and maintaining the integrity of the window or door. Laminated glass is ideal for use in areas requiring extra security, such as ground-floor windows and entry doors, as it is more difficult to break through compared to standard glass. Additionally, its sound-dampening properties make it a great option for installations in noisy environments. Laminated glass also offers UV protection, reducing the fading of furnishings and interiors caused by sunlight.
Frosted and Obscured Patterned Glass
Frosted and obscured patterned glass is an excellent choice for timber windows and doors where privacy is a priority. This type of glass features a textured or frosted finish that diffuses light, ensuring privacy while still allowing natural light to illuminate the space. It is ideal for use in bathrooms, bedrooms, and front doors, where visibility from the outside needs to be prevented without compromising on light. Frosted and obscured patterned glass also adds aesthetic appeal, offering various designs and patterns to complement any architectural style.
Warm Edge Spacers
Spacer bars are used to separate the panes of glass in double glazed units. Historically, aluminium was commonly used for spacer bars, but its high thermal conductivity caused significant energy loss. Today, warm edge spacer technology is favoured for its enhanced thermal efficiency, reducing heat transfer effectively. We incorporate warm edge spacers as the standard in all our products, except when aluminium spacers are specifically requested or required due to the glass type. We typically use white warm edge spacers to match the white paint of windows and doors, but these spacers are available in various colours to complement any window or door design.