Velux Slate Flashing - CK02

Name: Velux Slate Flashing - CK02
Brand: Velux
SKU: fpdeaoz36b
Price: 169.32 GBP
Availability: InStock

The Velux Recessed Insulated Slate Flashing delivers professional-grade weatherproofing with enhan...

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VELUX Recessed Slate Flashing Including BDX Insulation Collar to Suit CK02 Roof Window 550 x 780mm

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Travis PerkinsVELUX Recessed Slate Flashing Including BDX Insulation Collar to Suit CK02 Roof Window 550 x 780mm

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Product Information

Full details

The Velux Recessed Insulated Slate Flashing for CK02 windows is designed for roofers and homeowners seeking professional, weather-tight integration of roof windows with natural slate roofing. Its primary benefit is enhanced thermal performance and a sleek, recessed appearance. A potential consideration is its specific compatibility with natural slate up to 8mm thick and CK02 window models.

All features

Model Part Number	CK02
Brand	Velux

Extended Product Information

FAQs

What is the primary advantage of the recessed installation?

The recessed installation positions the window lower in the roof structure, creating a more streamlined, integrated appearance and improving thermal performance by reducing exposure.

Is this flashing suitable for any type of roofing material?

No, this specific flashing is designed for use with natural slate roofing materials up to 8mm thick.

What is the purpose of the BDX insulation collar?

The BDX insulation collar insulates the gap between the roof window and the roof construction, reducing heat loss and eliminating cold bridges for better energy efficiency.

Can I use this flashing with any Velux window size?

No, this flashing is specifically designed for Velux roof window model CK02, which measures 550 x 778mm.

What is the minimum and maximum roof pitch for this flashing?

The flashing is suitable for roof pitches ranging from 20° to 90°.

Does the flashing set include all necessary parts for a weathertight installation?

Yes, the Velux Pro+ flashing set for recessed installation comes with an insulation frame, BDX collar, BFX underfelt collar, and a transverse drainage gutter, providing a comprehensive solution.

How does the drainage gutter work?

The transverse drainage gutter is integrated into the underfelt collar and is designed to safely drain away any water that might penetrate the main roofing material and reach the underfelt, preventing water ingress into the building structure.

Troubleshooting

Window leaks after installation

Verify that all components of the flashing system (BDX collar, BFX underfelt collar, drainage gutter) are correctly installed and sealed according to the manufacturer's instructions. Ensure the slate tiles are properly overlapped and seated.

Condensation on the inside of the window

Check if the BDX insulation collar is correctly fitted around the entire window frame, ensuring no gaps. Also, ensure adequate ventilation in the room itself.

Difficulty fitting the flashing to the slate

Confirm that the natural slate thickness does not exceed the 8mm limit. Ensure the slate is laid correctly according to roofing best practices for the specified pitch.

Drafts around the window frame

Re-inspect the installation of the insulation frame and BDX collar. Ensure a tight seal is created between the window frame, the insulation, and the roof construction.

Pros and Cons

Pros

Provides a sleek, modern, and integrated look by recessing the window.
Significantly improves thermal performance and reduces energy loss around the window.
Offers robust weatherproofing with a multi-component sealing system.
Versatile installation suitable for a wide range of roof pitches.
Designed for straightforward installation with existing bracket systems.

Cons

Specifically designed for natural slate up to 8mm thick; may not be suitable for other roofing materials or thicker slates.
Requires a CK02 window model; not universally compatible with all Velux windows.
Recessed installation may require specific roof structure considerations.

Setup, Compatibility & Care Instructions

Compatibility: This flashing set is specifically designed for Velux CK02 roof window models (550 x 778mm) and is compatible with natural slate roofing materials up to 8mm thick. It is suitable for roof pitches between 20° and 90°.

Setup: The flashing is designed for a recessed installation, typically positioning the window 40mm deeper into the roof structure than standard flashing. It uses the same mounting brackets as standard installations. The set includes an insulation frame, BDX collar, BFX underfelt collar, and a transverse drainage gutter, all of which integrate to create a weathertight seal. Follow the specific Velux installation manual for detailed step-by-step instructions for your window model and roof construction.

Care: Once installed, the flashing requires minimal maintenance. Periodically inspect the area around the roof window for debris that might obstruct the drainage gutter. Cleaning the exterior of the roof window and the flashing can be done with a soft cloth and mild detergent if necessary. Ensure the flashing remains sealed and undamaged to maintain its weatherproofing capabilities.