ROOFDUCTThe A·B·C system, step by step.
A retrofit roof penetration for flat roofs, supplied as a complete set. For running insulated refrigerant or HVAC lines through the roof to, for example, a heat pump or air conditioning unit.
Go to the shop →Slide Model A around the pipe
You slide the bottom section sideways around the existing insulated pipe. No couplings to undo, no interruption to the work.
Model B wraps round and bonds in
The second part closes all the way around and is bonded watertight into the existing roofing membrane, becoming part of the roof.
Model C as a cap, fixed with screws
The cap closes off the whole assembly and is fixed with screws. A neat, tight roof penetration that lasts for years.
Material, shape and size
Eight variants: choose material, shape and size. Every variant is supplied as a complete set (Model A + B + C).
Aluminium. Sturdy, lightweight and cleanly finished, with the solid feel the renders show.
PVC version for a lighter, more affordable roof penetration with the same three-part build.
Square version: the standard shape, closing neatly onto the roofing membrane.
Round version with the same three-part build, for anyone who prefers a round roof penetration.
Integrated into the roofing membrane.
Model B is bonded in and sealed watertight into the existing roofing membrane. Model C closes it off as a cap with screws. The result is a neat, tight roof penetration that lasts for years.