About Us

Just Who are Principal Impressions?

Principal Impressions offer a wide range of services and products. We supply and install green roofs and green wall solutions, otherwise known as sedum roofs, turf roofs, roof gardens or living roofs, to any location in the UK. We offer sound, common sense advice, provide consultation to assist with your roof planning and we sell a range of green roof associated products to the landscape and roofing sectors as well as direct sales to homeowners and DIY enthusiasts.

As the UK’s leading independent greenroof specialist, Principal Impressions have extensive experience of working on all types of “greening” on roofs including:

  • Extensive Sedum Roofs
  • Bio Diverse Roofs (Brown Roofs)
  • Roof Gardens
  • Amenity Roofs

Understanding run off, enforced loads, plant varieties, substrate stabilisation and drainage ensure Principal Impressions are now at the forefront of this new industry.

There are close working ties with a number of UK and European partners, sourcing materials of the highest quality and with the ability to provide guidance on a range of related topics such as:

  • Rainwater harvesting
  • Water filtration and cleansing
  • Sustainable energy production
  • Irrigation

We have also carried out studies of the engineering properties of plants, using leaves and stems to mitigate the effects of multiple forms of erosion and using roots to increase compressive strength properties of soils, to provide natural drainage and reinforcement of soil layers.

Priding ourselves on our hands on approach, we do not simply tick boxes with our greenroof systems, we adhere to the FLL guidelines to ensure living roof success and the individual responsible for your project is accessible before, during and after the installation of a Principal Impressions.