Under certain conditions of high humidity and large temperature differentials, it is possible for condensation to occur on the metal and plastic surfaces of skylights. This is very common in acrylic glazed skylights industry wide and does not change the integrity or function of the skylight.
Condensation is not covered in your product warranty. So you’ll have to correct this problem yourself or pay someone else to do it. But, it’s not a tough process. Anyone can do it.
Double glazing will usually reduce the occurrence of condensation, but will not totally eliminate it. Under certain conditions, condensation will form between the layers of the plastic glazing, which will normally dissipate as the air space is heated by the sun.
If there is excessive moisture that does not dissipate, then the following procedure should be done to solve but not totally eliminate the problem.
Remove the dome retaining fasteners and remove the dome retaining frame and the top dome. Dry both domes with a cotton cloth and then replace dome, retainer and screws, but be sure not to compress the dome retainer too snugly to the base that it attaches to, so that the domes may allow for any future moisture to weep out from between the domes. Sometimes the frame can get compressed during shipping, handling, installation, etc.
If you want to clean your domes, DO NOT USE: any glass cleaners, window sprays, kitchen scouring compounds, alcohol, or solvents such as acetone, gasoline, benzene, carbon tetrachloride or lacquer thinner. These chemicals will destroy the plastic.