Lindab Magestic Galvanised 100mm Steel Downpipe Branch

Create tidy junctions and combine flows with the Lindab Magestic Galvanised 100mm Steel Downpipe Branch. Ideal where two roof areas meet—or when you need to add a secondary drop for an extension or porch—this robust tee integrates cleanly into a 100 mm Magestic stack to maintain alignment and reliable discharge in heavy rain. Fewer improvised fittings mean a faster install, fewer leak points and a smarter façade. As part of Lindab’s Magestic system, the branch is manufactured from galvanised steel enhanced with magnesium, creating a more stable barrier that protects zinc’s naturally porous structure from corrosion. The result is excellent resistance to red rust and white staining with minimal upkeep, including on exposed or coastal sites. Supplied unpainted, it weathers naturally to a refined dark-grey patina that complements brick, render and contemporary cladding. Pair with matching Magestic downpipes, couplers, brackets and a drain shoe for a cohesive, fully recyclable metal rainwater system built to last in UK conditions.

Technical Specification

• Brand: Lindab
• Range: Magestic
• Product Type: Downpipe Branch (tee)
• Model/SKU: GROR100MG
• Finish/Colour: Magestic Galvanised (unpainted; ages to dark-grey patina)
• Material: Galvanised steel with zinc–magnesium corrosion protection
• Size Compatibility: 100 mm Lindab Magestic steel downpipe system
• Function: Creates a junction or combines two drops into one stack
• Installation: Fits inline with standard 100 mm pipe and accessories
• Key Features: Neat junction detail; fewer leak points; enhanced corrosion resistance; low maintenance; recyclable steel
• Manufacturer: Lindab