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 Insulated Outlet Flat Grate made from Aluminium.
Aluminium Flat Grates are also available specifically for installation under paving slabs set on Harmer Modulock or Uni-Ring raised supports. These supports enable
rainwater to drain away under paving slabs ballasting the insulation on inverted roofs. Because the grate occurs under the paving slabs, there is no obstruction
whatsoever of the paved area. Rainwater simply drains away between the paving slab joints and into the outlets beneath.