This Velux 2-in-1 slate flashing kit is designed for installing roof windows on slate tiled pitched roofs. The kit includes flashing components, an underfelt collar, integrated drainage gutter, and insulation frame to assist with fitting two windows side by side within a 1550 x 1180 mm opening.
On site, the set provides a practical solution to achieving a weathertight seal around windows, supporting correct drainage and thermal detailing. Ideal for builders, roofers, and installers working with Velux windows on slate roofs, it helps streamline fitting and protects against water ingress.
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