What is the U-value of a typical unit?
Different U values can be determined by using different types of materials.
Our sealed units can have U values as low as 1.1
What is a U-value?
Amount of heat transferred through a material. The lower the U-value, the slower the rate of heat flow and the better the insulating quality
Can I glaze normal glass in a door?
Aslong as it conforms to the safety guidelines as shown on the regualtions and codes of practice page on this site.
What is Low e glass?
It is a low emmisivity glass which reflects heat back in to your property.
What is low iron glass?
It is glass which has a low iron content making it extremely clear.
What does integrity and insualtion mean?
It is a term regarding fire resistant glass and glazing
Insulation means the amount of time the glass will limit the temperature rise on the fire side.
Integrity means the amount of time the glass will remain intact in the event of a fire.
What spacer bar colour can I have in my sealed unit?
Standard colours are, Silver, black, brown, white or gold. Other colours are available as special orders.
What are the finsihes I can have on the edge of the glass?
- Arrissed Edge – The sharp edges are machined, not a finished edge, suitable for glazing or handling purposes or to reduce the risk of thermal fracture in annealed glass.
- Smoothed Edge – The edge of the glass is machined flat and the edges arrissed but not polished.
- Polished Edge – The edge of the glass is machined flat, the edges arrissed and the edge is polished.
- Bevel - The face surface of the glass is ground way and polished to various widths and thickness at the edge. Unless the thickness at the edge is specified, it will be to our normal setting.
Can I fit a cat flap in my glass?
Yes, we can fit cat flaps to single or double glazing.
Is there a one-way mirror?
Yes, 7.4MM Laminated One Way. The glass has a grey tint with a reflective surface. The glass is installed with the surface coating facing the observed area. The glass has low light transmittance and high reflectance, when the glass is installed with a lighting ratio of 7:1, the dark side being the side where the observer is, who should also wear dark clothing, the reflection will be look like a mirror to the observed.
Can I have leaded sealed units?
A self adhesive lead strip is applied to the inner and outer surfaces of the outer leaf of the double glazing unit. In squares, diamonds and colour film designs, full details with any necessary drawings and colour references are required. Standard designs are available.
How should I measure?
The standard adopted in the UK glass industry, is to measure in millimetres. If you measure in Imperial, use inches and either, one eighth (1/8”) and/or one quarter (1/4”) of an inch. Multiply inches x 25.4 to convert to millimetres. Always give the WIDTH first x HEIGHT second, this is most important for patterned glasses and double glazing units with square/diamond leads, Georgian Grills or Duplex Bars. It also applies to clear glass that is being BS or EN badge marked in the corner, if the width is not first, the mark may be in a different corner.
Do you have tolerances for cutting and supplying glass?
Yes there is an idustry standard of 3mm tolerance.
Can I give you a template to cut the glass to?
Use a hard material, hardboard is easy to work with. Paper is not very good as it tends to crease and is hard to find the edge on to work accurately to. A template should be the actual size required and need no additions or subtractions to it. Mark the face surface. Templates for double glazing units are made as viewed from the outside.
What are the visual quality standards for glass?
Please refer to our regulations and codes of practice page.
What are the lead times for glass?
These vary depending on the type of glass. Laminated glass is usually from stock, Toughened is from 3 days, sealed units are from 5 days.