Uploaded July 2026 | Updated September 2026, 16 hours ago
Three layers of patented technology ensure every deck-mounted VELUX skylight is weathertight. The first is the deck seal attached to the skylight, which provides a seal between the roof deck and the skylight frame. The second is the adhesive underlayment. And the third is the engineered step flashing and saddle flashing
Three layers of patented technology ensure every deck-mounted VELUX skylight is weathertight. The first is the deck seal attached to the skylight, which provides a seal between the roof deck and the skylight frame. The second is the adhesive underlayment. And the third is the engineered step flashing and saddle flashing










