Osma at Windsor Heating Supplies

Osma is the reference for residential and commercial drainage systems. One of the UK's most trusted plastic drainage brands, Osma offers a complete range of plastic drainage systems for domestic and commercial projects.

Osma's above and below ground draingae systems include pipe made using Wavin's Recycore Technology, resulting in a minimum of 50% recycled content that performs the same as virgin pipe, for a more sustainable project. Its Rainwater systems include hydrodynamic apertures for outstanding flow performance. It is also the innovator of the HepvO waterless trap for a safe waste system that won't dryout and prevent pathogens entering buildings.