While we design and install every roof to thrive year after year, a big part of ensuring that happens is to undertake a visual inspection and perform some simple tasks a couple of times a year. After each visit, we will send you a report detailing the plant and insect life on your roof, its overall condition and recommendations for future care.

Our teams have expertise in both roofing and environment, so our maintenance contracts ensure peace of mind not just in terms of the plants but of your roof as whole. Those staff with an environmental science background monitor and maintain the plant communities as they evolve, and experienced roofers are on hand on every visit to spot and rectify issues as they occur.

A stitch in time saves nine

Investing in skilled green roof maintenance can help catch problems with loose or broken tiles, cracked pipes or render for example, before they become more serious, potentially saving thousands on more substantial interventions. And sedum roofs, while often promoted as low-maintenance, can appear much more unkempt much more quickly with windblown invasives looking much more prominent than they do on a meadow roof.

We also provide a reactive maintenance service for problems with existing roofs whether green or not installed by others.

  • Roofing and environmental expertise
  • Fully trained staff, including use of harnesses
  • Full health and safety compliance
  • Detailed biodiversity reports
  • Competitively priced from £200 per visit

GRO Guidelines

GRO Code

Green roof design and maintenance: national guidelines

Maintenance, conducted by qualified personnel will ensure the initial establishment and continued health of the green roof system.

It is strongly recommended that the installing contractor remains responsible for the maintenance of the green roof during this establishment stage. When designing a green roof, it is important that the green roof system is specified accounting for any budgetary constraints.

The costs of roof maintenance should therefore form part of the lifecycle cost analysis for the building, allowing the most appropriate green roof specification to be realised.


Generally not required on biodiverse roofs, particularly where indigenous species are being encouraged to replicate native habitats. Whilst a low vegetative density is common, zero vegetation is generally undesirable.

Plant Management

A maintenance programme should be drawn up to follow the biodiversity design, ensuring that no materials are removed from the roof that may adversely affect the biodiversity potential of the roof.

What’s included?


The drainage outlets and channels perform an important function, enabling excess water to clear the roof and avoid water logging the roots of the wildflowers. One of the important elements of the regular inspections is to ensure that excess biomass does not build up and diminish outflow rates


There are a number of plants that should be removed when found on a green roof, either because they have aggressive taproots (e.g. Sow Thistle) or tend to outcompete native wildflowers (e.g. grasses). If you have opted for a sedum roof, windblown invasive species can quickly make your roof look unkempt and unloved.


We employ experienced roofers as well as plant experts in our maintenance teams so that issues with tiles, roof lights, pipes, mastic seals and metal detailing such as capping can all be identified early before they turn into more serious problems. Depending on their location, this can also be combined with PV maintenance.


Birds love to pull at the geotextile fabric used as separation and protection layers on a green roof. If left un-maintained these exposed areas can gradually suffer from cumulative
wind-damage. This image was taken on our first visit to a 3 year old roof on Brighton University that is in a very exposed location.


The main reason for roofs failing is insufficient substrate. In our designs we start with what the plants need and work down, and never skimp. This can’t be said of many of the roofs we see however, and one of the elements on new maintenance contracts we can help with is rectifying under-installed substrate levels to suitable levels.


Our signature habitat roofs in particular require expert care in the first few years to ensure the plant communities we design continue to thrive. While we do not guarantee particular plant coverage levels – every roof is influenced by climate, aspect and locale – we do undertake to ensure that the roof is developing at the rate it should and to coax it along as needed.

Have a roof that needs some TLC?