Luminous efficacy
Luminous efficacy determines how much light you get for the power you use - and there are huge differences between globe types.
Luminous efficacy differs...
Globe age and lumen depreciation
Find out how different types of globes deteriorate over time, and what effect that has on the quality of they light they produce.
When...
Performance considerations for lighting
Not all lighting is equal - and nor is it designed to serve the same practical purpose, or provide the same 'feel'. Read about...
Clerestory windows
Traditionally narrow bands of windows across the tops of buildings, but now seems to include any 'higher-than-average' window.
Clerestory windows allow daylight in without compromising...
Sawtooth roofs
This traditional daylighting method is mostly used in industrial buildings, but is now making a comeback in homes.
Sawtooth roofs are making a resurgence in...
Skylights and roof lanterns
Skylights generally allow much more light into a room than windows do, thanks to their access to direct sunlight.
A decent skylight offers a...
Windows and daylight
The most common and essential form of daylighting in almost all homes, windows play a very big part in lighting design.
According to the Building...
Daylighting requirements
The number of windows in your home and where you put them is restricted by rules designed to ensure a minimum amount of daylight...
Daylighting options
Daylight is a crucial part of any lighting design, and when used properly can help save you money and cut the size of your...
Cable and rail light mounts
These types of mountings are particularly common for areas with high ceilings and where movable task lighting is needed.
Cable and rail lights can go...