Wallbarn Outlets, Vents, Collars & Accessories
Wallbarn
Wallbarn offers a comprehensive range of roof drainage outlets and accessories, designed for effective water management across flat roofs, terraces, balconies and podium decks. Available in a variety of materials including PVC, TPE and EPDM, they include downpipe and through-wall outlets,ventilation units, collars, and a full range of guards, clips and couplings.
Whether you’re working with bituminous, single-ply or liquid-applied membranes, Wallbarn’s outlets are built to deliver long-term performance, protecting the waterproofing layer and supporting efficient drainage in both new build and refurbishment projects. Depending on the material of the roofing membrane the outlet is being connected to, bonding methods include welding, adhesive, mechanical fixing, or sandwiching between two layers of the waterproofing membrane.
Circular Downpipe Outlets
Wallbarn’s downpipe outlets are available in multiple diameters and lengths, manufactured in PVC, EPDM and TPE.These products are designed to deliver high flow rates and prevent ponding, ensuring reliable protection against water ingress.
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Corner (Through Wall) Outlets
Also referred to as parapet or through-wall outlets, these products are designed for controlled water discharge through the vertical face of a building or wall. Options include smooth or perforated flanges for improved bonding, and a choice of materials tailored to different waterproofing systems.
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Collars
Wallbarn collars provide a watertight connection between through-pipes and waterproofing layers. Offered in PVC and TPE, they allow quick and secure transitions through the roof build-up.
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Roof Vents / Aerators
Wallbarn’s roof aeration vents allow moisture trapped in theconcrete deck to escape, reducing vapour pressure andprotecting the membrane from blistering.
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Outlet Accessories
A wide variety of accessories are available to complete theoutlet system and accommodate complex roof layouts:
Gravel & Leaf Guards
Couplings & Jubilee Clips
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Wallbarn Support
Wallbarn has designed its website to make it as easy as possible to select the right outlet for your project. Products are organised first by type — including downpipe outlets, corner(through-wall) outlets, collars and vents — and then by material and compatibility.
To further assist, dedicated compatibility charts are available,helping you match the correct outlet to your chosen waterproofing system.
If you require additional advice, Wallbarn’s experienced team is only a phone call or email away.
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