Our sales and technical team have over 20 years’ experience working with the industry leading rainwater systems available in the UK.
Expert advice
Our friendly service and competitive prices combined with a step-by-step support approach, make for easy rainwater product selection.
Nationwide delivery
Our delivery partners cover the whole of the UK (mainland only) so no matter where you are, we can get your order to you.
Premium quality
Our aluminium, steel, cast iron, plastic & GRP rainwater systems are all sourced from the leading manufacturers in the UK to ensure they are of the highest quality.
Harmer Modulock Channel Drain Duct 30mm x 70mm in Galvanised Steel. Slotted duct used in conjunction with Access Chamber, is laid within deck build-up to connect between channels and rainwater outlet positions; used as an economical alternative to channels.
Harmer Roof Drainage Modulock Channel Drain Range is an advanced linear steel drainage range for use within a raised deck structure. Combining threshold drainage with the level access requirements of Part M, it can be used in its own right, or especially with Harmer Modulock Raised Deck Supports.
Harmer Modulock Channel Drain is a highly versatile line drainage system designed to provide the ideal level access drainage solution, where rainwater run-off and percolation are required to be intercepted, at the perimeter of a building, or across thresholds and points of access into and out of a building.