DEKS Fast Flash - 5m x 370mm - Black
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B&QB&Q - Fastflash Lead Replacement 370mm Black (Ffr5-370B)
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Product Information
Full details
The DEKS Fast Flash is a high-performance, flexible flashing solution for modern roofing projects, ideal for roof joints, penetrations, and solar installations. Its key benefit is providing a weather-tight seal as an environmentally friendly, self-adhesive alternative to lead, offering quick and secure application. A caveat to consider is the specific paint requirement for certain conditions.
All features
| Model Part Number | Ffr5-370B |
|---|---|
| Brand | DEKS |
Extended Product Information
FAQs
Is DEKS Fast Flash suitable for all roof types?
DEKS Fast Flash is designed for use on almost all roof materials and applications, provided the roof has a minimum slope of 5°. Always ensure the surface is clean and dry before application.
How long does DEKS Fast Flash last?
DEKS Fast Flash is a durable roofing solution designed for long-term weather protection. Specific lifespan depends on environmental conditions and installation quality, but it is engineered to outperform traditional flashing in many respects.
Can I paint DEKS Fast Flash?
Yes, if painting is required or in specific conditions (like water running from copper or bitumen), you must use 100% acrylic low-sheen exterior paint. Ensure the surface is clean and dry before painting and allow adequate drying time.
What are the dimensions of this product?
This specific product is 370mm wide and comes in a roll of 5000mm (5 meters) in length. The color is Black.
Why is it better than lead flashing?
It's an environmentally friendly alternative to lead, is lighter, easier and faster to install due to its self-adhesive nature, and does not carry the risk of theft associated with lead.
What is the minimum roof slope for installation?
DEKS Fast Flash can be installed on roofs with a minimum slope of 5°.
How do I ensure a good seal?
Ensure the surface is clean and dry. Apply firm, even pressure from the center outwards after positioning the flashing to remove any trapped air. For optimal adhesion, apply in moderate temperatures.
Troubleshooting
Flashing not adhering properly
Ensure the roof surface is thoroughly cleaned, dried, and free of any contaminants. Check ambient temperature; adhesion is best at moderate temperatures. Reheat gently with a hot air gun if necessary, and apply firm, even pressure.
Creases or bubbles in the flashing
Carefully lift the affected section and reapply, smoothing out from the center. Small bubbles can often be pricked with a fine needle and the material pressed down.
Material cracking after installation
This may occur if the material was stretched too tightly or installed in extreme cold. Ensure proper installation techniques are followed, avoiding excessive tension and ensuring the surface is suitable for application temperature.
Paint not adhering or discolouring
Verify that only 100% acrylic low-sheen exterior paint is used. Ensure the flashing surface is clean and dry before painting. Allow sufficient drying time for the paint.
Pros and Cons
Pros
- Environmentally conscious lead replacement
- Fast and easy installation due to self-adhesive backing
- Flexible and adaptable to different roof contours
- Lightweight and resistant to theft
- Provides a reliable, weather-tight seal
Cons
- Requires specific paint (100% acrylic low-sheen exterior) if painting is needed or in contact with copper/bitumen
- Minimum roof slope of 5° required for installation
- Adhesion performance may vary based on substrate preparation and temperature
Setup, Compatibility & Care
Setup:
- Ensure the roof surface is clean, dry, and free from dust, grease, or loose debris.
- Apply the flashing on roofs with a minimum slope of 5°.
- Peel back the protective film from the self-adhesive side.
- Carefully position the flashing and press down firmly, working from the center outwards to eliminate air bubbles.
- For complex shapes, cut the material to size before applying.
Compatibility:
DEKS Fast Flash is designed for use on almost all common roof materials, including tiles, metal sheeting, asphalt, and bitumen. Ensure surfaces are compatible with self-adhesive products.
Care:
- Keep the product stored in its original packaging in a cool, dry place.
- Clean the surrounding area gently with a damp cloth if necessary.
- If painting is required, or if water is likely to run from copper or bitumen onto the flashing, use only 100% acrylic low-sheen exterior paint. Allow adequate drying time for the paint before exposure to the elements.