Yasian Inside Gutter Angle 90-Degree UPVC Rainwater Fitting

Yasian Inside Gutter Angle

The Yasian Inside Gutter Angle provides a high-integrity 90-degree transition for internal roof corners within a rainwater harvesting system. Manufactured from UV-stabilized UPVC, this fitting ensures a leak-proof connection where two gutter runs meet at a concave wall intersection. It maintains consistent flow rates and prevents water stagnation at critical junctions.

Built for the Job

Roofing contractors and site supervisors specify this internal corner piece for residential and commercial drainage projects requiring precise geometry. The fitting handles the thermal expansion and contraction common in tropical climates without cracking or losing its seal. It is designed to snap-fit with standard gutter profiles, reducing the time spent on ladders during installation. By using a dedicated internal corner rather than improvised joints, installers ensure the structural integrity of the entire perimeter drainage layout. The smooth internal bore minimizes debris accumulation, which is essential for maintaining clear downpipes during heavy rainfall. This component is vital for complex roof designs where valleys or internal corners create directional changes in water flow.

• Directing rainwater flow around internal 90-degree building corners and alcoves.

• Completing closed-loop gutter systems on multi-level roof structures.

• Retrofitting existing drainage systems to improve corner sealing.

Product Highlights

UV-Stabilized UPVC

The material composition resists brittleness and color fading caused by prolonged exposure to direct sunlight.

Precision Snap-Fit Design

• Eliminates the need for specialized welding tools or excessive adhesives.
• Includes integrated gasket tracks for secure rubber seal placement.

Technical Specifications

What’s Included

• 1 x 90-Degree Internal Gutter Angle Fitting

On-Site & Workshop Notes

• Ensure the gutter ends are cut square and deburred before inserting them into the fitting to prevent gasket damage.

• Apply a thin layer of silicone lubricant to the seals to facilitate easier insertion and accommodate thermal movement.

• Position a fascia bracket within 150mm of the corner to provide adequate support for the weight of the water at the junction.

• Check for alignment against the building wall to ensure the internal corner sits flush and does not strain the gutter run.