To state the obvious, the direction windows face and their
exposure to the sun determines how much or how little natural
light enters a room. What's not so obvious is how dramatically
different the type of lighting is depending on the direction it's
coming from. Read on to see what we mean.
North-facing windows offer the clearest, most consistent light but
also the coldest exposure. If you live in the northern hemisphere,
look for energy-efficient treatments to prevent the cold from
leaking in and the heat from escaping. If you're not worried about
losing heat, think again: unprotected windows allow 40% of your
home's heat to escape through the windows.


East-facing windows offer warm, bright light, especially in the
morning. Early-morning light often means your interior spaces
will heat up quickly. Look for window fashions that diffuse the
light, which in turn helps to keep your rooms cool. We
recommend honeycomb or shading construction treatments
because they trap warm or cool air in their cells, decreasing the
intensity of the temperature as it enters the room; these
treatments will also block ultraviolet (UV) rays and protect your
furnishings.


West-facing windows admit the hottest light and the most harmful
UV rays. Consider a window treatment that provides superior
light control, energy efficiency and UV protection.


South-facing windows are the most important natural light source
because they receive sunlight year round and cast a warm,
golden glow on interiors. Look for treatments that let in as much
of this light as possible while still offering protection against heat
and UV rays.