Velux GGU INTEGRA Instrukcja Użytkownika Pobierz pdf (Strona 106)

Building physics

106 VELUX

Interior ceiling ﬁnish

To complete the hole in the roof construction on the interior side a

lining must be established.

The lining is of great importance to the performance and to the

overall impression of the window.

• The top should be horizontal and the bottom vertical so that

warm air from a heat source below the window can keep the inner

glass pane heated and prevent the possibility of condensation oc-

curring. This shape also allows more light into the room.

• Top and bottom positioned at right angles to the window would

on the other hand make the window seem smaller and even impair

the view. It may also allow for cold areas at the bottom of the

window allowing condensation to occur.

• Note that the colour of the lining has an inuence on the amount

of light reﬂected from the lining into the room.

VELUX linings are, of course, designed to meet these require-

ments. In addition VELUX linings oer further advantages that

cannot be obtained with a made-on-site lining.

• The curved top and bottom lining elements allow for more insula-

tion (a).

• VELUX linings are tted directly in the window rebate. It is not

necessary to provide additional framing for the lining.

• VELUX linings are factory nished and further treatment is not

required.

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Velux GGU INTEGRA Instrukcja Użytkownika Strona 106