VELUX EKL 4021E2 Couple Slate Integrated Flashing 100mm Gap

The VELUX EKL 4021E2 Couple Slate Integrated Flashing 100mm Gap is expertly designed for installing two VELUX roof windows side by side on slate roofs up to 8mm thick. This integrated Pro+ flashing system eliminates the need for a central rafter, creating a sleek, seamless appearance while maximising daylight and enhancing the feeling of space in your room.

Perfect for modern homes and loft conversions, this all-in-one flashing kit ensures a professional, energy-efficient, and watertight installation. It includes a BDX insulation collar for thermal protection, a BFX underfelt collar for a secure seal against moisture, and bearing beams and cover plates for a smooth, straightforward installation.

Technical Specification

• Installation Guide
• Designed for side-by-side installation of two VELUX roof windows with a 100mm gap
• Suitable for slate roofs up to 8mm thick
• For roof pitches between 15° and 90°
• BDX insulation collar improves energy efficiency and reduces heat loss
• BFX underfelt collar ensures a durable, weathertight seal
• Includes cover plates and bearing beams for easy installation
• Creates a seamless, elegant appearance with no intrusive central rafter
• Ideal for brightening medium to large rooms
• Compatible with VELUX blinds and external heat protection accessories
• Corrosion-resistant materials ensure long-lasting durability
• 10-year VELUX guarantee for lasting peace of mind