Insulated glass unit with infrared reflecting pigmentation in the mask

A roof or skylight window comprising a frame and an insulated glazing unit, wherein the insulated glazing unit comprises:

• a first glass pane and a second glass pane each having inner surfaces opposing each other, and
• a side seal arranged between the first glass pane and the second glass pane creating a sealed cavity between the first and second glass panes;
• wherein the first glass pane comprises an edge surface region overlapping the side seal along at least a first part of the side seal, wherein the edge surface region is a region at a peripheral edge of the first glass pane, wherein the edge surface region comprises an enamel layer comprising pigments wherein the pigments are metal and metal oxides comprising one or more of the metals selected from the list of:
• Aluminum;
• Antimony;
• Bismuth;
• Cobalt;
• Copper;
• Chrome;
• Iron;
• Manganese;
• Nickel;
• Titanium;
• Vanadium;
• Zinc;
• Zirconium;
• and wherein the pigments reflect at least 40% of solar radiation in a near infrared wavelength range between 700-2500 nm;
• wherein the side seal is adhered to the inner surfaces of the first and second glass panes by a sealant material selected from the group of polyisobutylene, polysulfide, polyurethane, silicone, or mixtures including one or more from the group, wherein the enamel layer overlaps the sealant material, and/or extends over a larger area than the sealant material such that the sealant material is covered by the enamel layer.