Check that any gaps around ridges and roof lights are fully sealed8. Ensure water tightness and breathability of the outside part of the construction. If necessary fitting a suitable membrane on the outside of the roofline. Ensure proper ventilation of the construction when required ...
A systematic design procedure has been developed to calculate the average horizontal illuminance upon a work plane due to skylights in a pitched roof. The calculation procedure allows for pitched roofs with slopes up to 30 degrees from horizontal, and for both clear and overcast sky conditions. ...