Use and Care Manual
Acrylic and Polycarbonate products 
•  DO NOT USE cleaning materials containing abrasives. 
•  DO NOT USE gasoline, acetone, chlorinated solvents, carbon tetrachloride, 
denatured alcohol, etc., as they tend to soften the surfaces of the plastics and often 
causes crazing. 
•  DO NOT USE brushes, abrasives or gritty cloths. 
•  WASH with mild soap or detergent and lukewarm water solution, using a clean, 
soft cloth or cellulose sponge and as much liquid as possible. Household 
ammonia in water, in concentrations recommended for general cleaning, is also 
excellent. Rinse well and remove remaining excess water with a damp soft cloth, 
chamois or moist cellulose sponge. 
Interior Cleaning 
•  Most VELUX skylights have a white pre-painted, wood frame or maintenance 
free, plastic frame and sash. 
•  These surfaces can be cleaned with a damp cloth. 
•  A mild, soapy water solution can be used for tougher dirt. 
•  Insect screens in venting skylights can be cleaned by removing the screen and 
spraying the screen with a garden hose. 
•  Let the insect screens thoroughly dry before replacing them into the skylights 
Interior Finish 
Pre-finished Wood Frames 
Skylights with pre-finished wood frames need to be inspected annually. The 
finish that is applied to the wood surface is not considered a permanent coating. 
As with any finished surface it is subject to peeling, cracking or fading and will 
need to be re-finished/re-painted periodically. 
•  To re-finish/re-paint the skylight interior wood surfaces, prepare the skylight 
by removing the factory finish. After ensuring that the surface is clean, apply 
primer to the wood. When primer is dry, apply a coat of water based acrylic 
varnish/paint (always follow finish manufacturer’s application instructions). 
•  For paint or finish damages to larger surfaces of the wood, apply the technique 
described above. 
•  Touch up paint for covering scratches to the wood surface is available from 
VELUX (part # 307408).  
•  Keep all varnish/paint off of skylight gaskets and glass 





