M-WELD™ Standard M-Drain™ Updated: 8/16
M-WELD ™ STANDARD M-DRAIN™ (1 OF 2) Description Standard M-Drain™ is a spun-aluminum or copper roof drain with gravel guard, strainer caps, and water-proofing plumbing seal attached. M-Drain™ is pre-flashed with either APP or SBS smooth-surface modified bitumen membranes, and is available in full and insert sizes to accommodate new construction and retrofit applications. Unflashed M-Drain™ is also available. • Aluminum and copper M-Drains are available in the following sizes.
M-WELD ™ STANDARD M-DRAIN™ (2 OF 2) M-Drain™ New Construction Installation: 1. I nstall base sheet as required by manufacturer’s specifications to existing drain leader. 2. Select appropriate size M-Drain™ to match the plumbing pipe. Use a flexible coupling to connect the M-Drain™ to the plumbing pipe. 3. Choose appropriate M-Drain™ material: • For heat-welded membranes, use APP flashing material. • For hot mop or cold-applied membranes, use SBS flashing materials. 4.
