Discover Windows / Daylight and How a Room Feels

Two Sides Against One: The Oldest Rule Worth Keeping

Almost every room widely agreed to be lovely is lit from more than one direction.

It is one of the few observations about buildings that survives across climates, centuries and budgets. Rooms with daylight from two directions are more comfortable to be in than rooms lit from one, and the difference is not subtle. The second source can be much weaker than the first and still do its work, because its job is not illumination but shadow filling. It softens the modelling of everything in the room, evens out the contrast between the opening and the wall beside it, and removes the sense that the room has a bright end and a spare end.

The second direction need not be a second big opening. Light borrowed around a corner, bounced off a pale wall in an adjoining space, or admitted high up where nobody would think to look, all count. What matters is the angle of arrival, not the size of the hole. This is why rooms that seem inexplicably pleasant often turn out, on inspection, to be getting a quiet contribution from somewhere the occupant has never consciously registered.

Once you know the rule you cannot stop testing it. Walk through any building you like and identify the sources. The rooms you linger in will nearly always have two. The rooms you pass through will have one, or one plus a doorway, which is not quite the same thing but is better than nothing. It is a rule with almost no exceptions and it costs nothing to apply as a way of understanding why you feel the way you feel in a given space.