Building Elements
185
Top hung roof windows Designed for low roof pitches where a pivoted window might interfere with headroom. Suitable for pitches between 15ยบ and 55ยบ (and up to 77ยบ with special springs). Can be rotated 180ยบ for cleaning. Some versions are available for an escape/access door. Sizes similar to pivoted windows. Additional fixed light windows These may be fitted directly above or below a roof window, within the same plane, to extend the view and increase daylight. Balcony system A top hung roof window opens out horizontally and is combined with a bottom hung lower sash fixed in the same plane. The lower sash opens out to a vertical position and railings automatically unfold to close the sides and create a small balcony. Roof terrace system This system combines a top hung roof window with a vertical side hung opening out sash fixed below with no intermediate transome, allowing access to a balcony or terrace. Additional vertical windows Where floor level is below the eaves and more light and view is required, bottom hung or tilt-and-turn windows may be fixed in the vertical plane directly below roof windows fixed in the sloping roof above. Conservation Area roof windows Horizontal pivot windows with a central vertical glazing bar, recessed installation and black aluminium external finish suitable for Listed Buildings and Conservation Areas. Sizes:
550 980*
660 1180
780 1400
* A version of this window is available as a side hung escape/access roof window.
Source : Velux Company Ltd