Roller blinds on their own can work very well at shutting
out light when it’s not needed, but the fact that
they are essentially one block of material that covers an
increasing portion of the whole window the more they are
pulled down means that getting complete control of the light
into the room is not really possible. A similar situation
can arise with roman blinds, with the added complication
of them being a little unwieldy e.g. when they’re
older or if there’s any tangling in the draw.
Horizontal blinds provide a much greater level of control
of light. This is because the don’t simply block out
large parts of the window from the top down, but the precise
angling of the horizontal slats allows a more uniform pattern
of light into the room, and a more uniform view out of the
window. With horizontal blinds however, there is often some
seepage of light through the sides of the windows if the
blind is not the exact size needed, or of it sits too far
out from the window frame.
Vertical blinds
offer a much better solution for precise light control.
In the closed position, the slats form a solid barrier across
the glass, with the added bonus of looking particularly
neat and tidy. The vertical
blind slats can be angled at very small degrees toward
the room, allowing and channelling just the required quantity
of light in. Draws can be fitted and operated from either
side to take account of the limitations of the window space
or personal preference. Made
to measure vertical blinds can be made to precisely
fit the window space thus giving ultimate control over light
aesthetic appeal.