Rainwater Solutions – Key Accessories & Uses
-
Gutters
Collect rainwater from roof sheets and channel it into downpipes. Prevents overflow and protects walls/foundations. -
Downpipes
Carry water from gutters to ground or drainage. Essential for directing water away safely. -
Downpipe Bends
Adjust flow direction around obstacles. Ensures smooth water movement even on complex buildings. -
Nozzles (Round & Square)
Connect gutters to downpipes. Provide secure fit and prevent leaks at junction points. -
Gutter Brackets
Secure gutters to roof edges. Maintain alignment under heavy rainfall. -
End Caps
Seal gutter ends to stop leaks and prevent debris entry. -
Valley Gutters
Channel water from roof valleys into main gutter system. Critical in high rainfall zones. -
Wall Flashing
Seals roof–wall junctions to prevent water seepage. -
Ridge Capping
Protects the roof ridge line while preventing water ingress at sheet joints. -
Barge Flashing
Shields roof edges from wind-driven rain while adding a neat finish.
Frequently Asked Questions
They are fittings such as gutters, downpipes, ridge caps, and flashing made from zinc aluminium sheets. They complete the roofing system by managing rainwater and protecting joints.
Heavy monsoon rains can cause water damage. Gutters and downpipes safely direct water away, protecting walls, foundations, and landscaping.
With AZ150 coating, they typically last 15–25 years, even in coastal or high-rainfall regions, when installed and maintained properly.
Most rainwater accessories are supplied in 0.40 mm to 0.47 mm thickness, offering durability without being too heavy.
Yes. With 55% aluminium and 43.4% zinc alloy coating, they provide excellent corrosion resistance, especially in coastal areas.
Yes. Gutters, ridge caps, and flashings can be supplied in matching colors to your roofing sheets for a uniform finish.
Large capacity gutters (up to 4450 mm in length) are recommended to handle Sri Lanka’s intense rainfall.
Yes. Gutters, bends, and flashings can be fabricated to custom lengths and shapes to match unique roof designs.
- Ridge capping covers the roof’s top ridge, sealing joints.
- Barge flashing protects the gable edge from wind-driven rain and gives a neat finish.
They are installed using gutter brackets that securely attach the gutter to the fascia board, maintaining proper alignment.
Yes. TNR accessories are compatible with both roofing sheet types and fit standard profiles.
Yes. Downpipe bends allow smooth directional changes while keeping water flow consistent.
Yes. They are critical in roofs where two slopes meet, ensuring water flows into the main gutter system instead of leaking inside.
Use self-drilling roofing screws with proper sealing washers for a secure, leak-proof fit.
End caps seal gutter ends to prevent water leakage and stop debris from entering the system.
Yes. They are specifically engineered with AZ150 coating to resist salt corrosion in areas like Negombo, Galle, and Trinco.
Inspect and clean gutters and downpipes at least twice a year, especially before and after the monsoon season.
Yes. They are suitable for residential, commercial, and industrial projects, handling both small and large roof areas.
Yes. TNR supplies full rainwater systems including gutters, downpipes, bends, brackets, nozzles, and flashing.
You can purchase them directly from TNR’s Wennappuwa showroom or through our islandwide dealer network, with delivery to your site.
