Harmer Building Drainage’s SML Below Ground range has been given BSI Kitemark certification, assuring that the materials and methods used in production are fully compliant with internationally recognised standards.
The BSI Kitemark certification confirms Harmer’s Below Ground drainage system is both durable and impact resistant, and is manufactured and tested to the highest standard.
Lightweight and 100 percent recyclable, the range also works seamlessly with Harmer’s SML Above Ground range, providing a complete and fully connected system for all building drainage.
By being awarded the BSI Kitemark, Harmer’s complete SML range is fully compliant with all necessary standards, including CE Mark Conformity. The dry jointed pipework drainage system is proven to function at the highest standard when used in performance-critical projects.
Harmer Building Drainage is part of Alumasc Water Management Solutions (AWMS), the first joined up brand in the industry to provide an overall water management solution.




