Please use this glossary to help you to further understand our quotes, click on a term to reveal it's description. If you need any further explanations please contact us.
‘A’ energy rated
Argon gas filled
Argon Gas is used instead of air between the two panes of glass within a sealed unit. The Argon gas is slow moving, which means that the heat hitting the internal pane of glass does not move directly through to the external pane of glass. Having Argon Gas instead of air, creates roughly a 67%* decrease in the loss of heat from your home.
Box Sash Windows
A Box Sash window is often found in Georgian and Victorian houses where the window vertically slides. It is made with two sashes (traditionally arranged with small single glazed window panes, three across and two down). In modern double glazed Box Sash windows the six panes within the sash are replaced by one large double glazed sealed unit. Glazing bars are then applied to the surface of the glass to give the appearance of several smaller panes. The Sash moves using a concealed pulley system connected to sash weights which balance out the weight of the sash. The windows also fold in for easy cleaning.
Casement windows are the most common style of window. They are simply a window attached to it's frame using hinges, as opposed to a picture window or Box Sash window.
Condensation is the reverse process of evaporation. When referring to double glazing, people are usually referring to the formation of water droplets on their glass. This is caused when their is a high moisture content in the warm air in your home and it comes into contact with a cold surface. The warm air quickly cools and releases the water which is what you see. This is especially common in the winter mornings and evenings when central heating is on and there is a bigger contrast in the inside and outside temperatures. However warm air is also triggered by everyday activities such as cooking, showering and drying wet clothes. If condensation is allowed to linger, it can cause the right breading ground for black mould to grow, which can lead on to damage your walls and ceilings. There are many glazing innovations that assist in preventing condensation such as Warm Edge spacer bars.
Duraflex Diamond range
The Duraflex Diamond range is a PVCu profile, imagine a cross section where you can see the internal makeup of your window frame, this is the profile. An extruded profile is used by window manufacturer to make windows and doors; they cut and assemble the profiles together to create the frames, before adding locks, hinges, handles, weatherseals and gaskets.
The Duraflex Diamond range profile has an extremely high specifications when compared to it's competitors. It is manufactured using calcium organic material produced under the latest British standards. It's award winning, and has BBA and BFRC approval for your complete peace of mind. The profile creates insulated frames, weather tight seals and has multiple chambers. All of which result in keeping the heat inside your home, and noise to a minimum.
When manufactured into windows it can attain the highest Window Energy rating and 'U' value. It also has Q-Lon pre-inserted into all sections to enhance it's weatherseal and help to minimise noise. It is also unique as it is produced in two shades of white (Blue white and Warm white). It is available in both Beveled and Fully Featured designs.
Easy clean facility
"Fully featured" range design
Fully Featured is a term used to describe the type of beading used on the window frames. To be classed as Fully Featured, the beading used is called Ovolo (or traditionally 'quarter round'). Ovolo is convex, and appears on the interior and exterior of the window frame. It produces a soft look, creating fine shadow lines, low sight-lines and allows for maximum light.
Illustration shows the visual difference between Chamfered style and fully featured.
This refers to the fact that the sealed unit is air-tight. This is important because if air gets into the unit, it's moisture will cause condensation/cloudiness to build up on the inside, and ultimately loosing it's energy efficiency. This is known as a sealed unit which has broken down and needs replacing.
Internal glazing beads
For increased security, the glazing beads are applied and removed from the inside. The arrow on the image shows the glazing bead on the inside of your home.
This is an important consideration, as if the window is externally beaded, a thief can fairly easily remove them, and take out the whole pane of glass.
Low-emissivity glass refers to the microscopically thin and virtually invisible metal applied to the pane of glass.
This metal uses the same principle as a drinks thermos of reflecting heat.
The low-e coating is bi-directional. So in the winter you appreciate it because it keeps the warm air in your home. Whereas in the summer, it reflects the hot sun away, keeping your home nice and cool.
Low-e glass significantly affects the U value of your glazing.
Low level gaskets
Low lying gaskets are designed to fit in with the profile, allow the maximum glass area to be visible, eliminating the use of heavy looking rubbers.
Manufactured in accordance with...
Planitherm glass brings together two elements. Firstly it has a special coating; this coating reflects the warm heat from the room back into the room instead of letting it escape through the glass. Secondly the glass captures the natural warmth of the outside and allows it to pass through the glass.
This combination results in an extremely high energy efficiency, which exceeds the performance of Pilkington “K” glass.
Additionally, Planitherm helps to eliminate internal condensation. It also doesn't have a haze or tint, maximising the light entering your home.
Reinforcing is not as standard in PVCu frames. Reinforcing is used to provide rigidity to frames for hardware and to control the rate of expansion, when the frames are over 1800mm in width or height. It may also be required in exposed locations and coastal areas where wind pressure is a consideration. The frames will be reinforced with either steel or aluminium.
All foiled (wood grain) PVCu frames are fully reinforced. This is due to the nature of the colours absorbing heat (as opposed to reflecting it like white PVCu) which can deform the frame, but is controlled by reinforcement.
Sealed Unit depth
Our standard depths of sealed units (thickness of glass) are: 28mm for Casement windows and 24mm to Box Sash windows.
Secondary venting position
Otherwise know as 'Night Vent'. It is a locked position, which allows air to enter through the window. Allowing for the cool night air to enter during the summer months, or to increase ventilation within your home.
The image shows the top small window in the night vent position. The handle is locked, and the window cannot be opened any further.
Enables the easy clean hinges to operate in a box sash window. Tilt restrictors enable each sash to be tilted back, to the perfect angle for easy and safe cleaning from the inside of your home
Warm Edge spacer bars
Spacer bars separate the two panes of glass within the sealed unit. They maintain a consistant space between the two panes whilst also creating the "seal" to enclose the gas within the unit. There are usually two types of spacer bar materials: Warm Edge and Aluminium. Warm Edge spacer bars are made from an insulating composite plastic. The Warm Edge spacer bar has been designed to reduce the loss of heat through the edge of the sealed unit. The Warm Edge insulates the seal, whereas Aluminum which by nature is highly conductive, encourages the escape of heat which causes condensation.
Image showing the visual difference obtained through matching the spacer bar to your window frame or decoration.
Left aluminum spacer bar, Right brown Warm Edge spacer bar.
We offer black spacer bars as standard, but can source a range of colour options to suit all tastes.