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Professional Building Supplies£24.98Visit shop Lindab Magestic Steel Intermediate Downpipe - 87Mm X 1Mtr Galvanised
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The Lindab Magestic Intermediate Downpipe is an essential component for professional installers and homeowners looking to bridge the gap between gutter outlets and ground drains when they are not perfectly aligned. Crafted from high-strength galvanized steel with a specialized magnesium-zinc alloy coating, this 87mm diameter pipe offers industry-leading corrosion resistance, making it an ideal choice for coastal or harsh marine environments. While it provides unparalleled durability and self-healing properties, users should be aware that the natural metallic finish will weather into a dark grey tone over time, rather than retaining its initial bright silver appearance.
| Model Part Number | MST187MG |
|---|---|
| Brand | Lindab |
Yes, they can be painted, but you must use a suitable metal primer and topcoat system specifically designed for galvanized steel surfaces.
The material begins its natural weathering process immediately upon exposure to the elements; the transition to a dark grey matte finish typically completes within 12 to 24 months.
It is not recommended to mix materials due to different expansion rates and connection methods; it is best to keep the system entirely Lindab steel.
The self-healing effect is designed for minor scratches and cut edges. Large, deep gouges that penetrate through to the core steel may require a touch-up paint for aesthetic reasons.
You should use a fine-toothed hacksaw or metal-cutting circular saw to ensure a clean edge that minimizes the risk of rust.
Check the pipe end for burrs caused by cutting; use a round file to smooth the edge and apply a small amount of silicone lubricant to the seal.
This is likely 'white rust' forming as the zinc reacts; it is a normal part of the protective process and will eventually stabilize into a dark grey finish.
Ensure you are using genuine Lindab components. If loose, use a stainless steel self-tapping screw through the overlap to provide extra mechanical security.
Installation requires basic guttering tools, including a hacksaw or electric metal shear, a file for deburring, and a rubber mallet for friction-fitting joints. Always ensure the pipe is inserted in the direction of flow—with the swaged end facing downward—to prevent water leakage at the joints.
Compatibility: This 87mm pipe is specifically designed for the Lindab Magestic steel guttering system and may not be compatible with generic PVC or non-Lindab metal systems without appropriate adapters.
Care: The material is low-maintenance. Avoid using abrasive cleaning agents or steel wool, which can damage the protective alloy layer. If the finish is scratched during installation, the material will naturally seal itself over time due to the magnesium properties. Periodic flushing with water to remove debris is recommended to maintain optimal flow capacity.
