Green Roofs in Bristol and Bath
Get a Free Roof Quote
Roofing Systems
Living Roofs for Homes and Businesses
A green roof is a layer of plants, usually sedum, grown over a waterproof membrane. It adds insulation, slows rainwater run-off, supports wildlife and can make a flat roof far more pleasant to look at, which is why green roofs are becoming more common across Bristol and Bath.
We install green roofs in Bristol and Bath on extensions, garden rooms, garages, bike stores and commercial buildings, starting with the most important part: a sound, root-resistant waterproofing layer underneath.
Where Green Roofs Works Best
Green Roofs is a good choice for:
- Extensions and garden rooms
- Garages, sheds and bike stores
- Flat roofs visible from upstairs windows
- New commercial developments
- Roofs where rainwater run-off matters
- Projects aiming to support biodiversity
There are two main types. Extensive green roofs use shallow, lightweight sedum and need little maintenance. Intensive green roofs have deeper soil and larger plants, and need much more structural support. Either way, the roof structure must be checked for the extra weight, especially when wet. Good practice is set out in the GRO Green Roof Code from the Green Roof Organisation.
Underneath, we usually use a root-resistant EPDM or single ply membrane.
Expert Advice
Extensive and Intensive Green Roofs
Extensive green roofs use a thin layer of growing medium with hardy sedum and wildflower plants. They are relatively light and need little maintenance. Intensive green roofs are deeper, can support lawns, shrubs and even trees, and need irrigation, regular maintenance and a much stronger structure. Most homes and many commercial buildings suit extensive systems.
The Layers Beneath the Plants
A green roof is built up in layers: a root-resistant waterproof membrane, a protection layer, a drainage layer that stores and releases water, a filter fleece, the growing medium and finally the plants. Outlets and edges are kept clear of vegetation so water can always drain away.
Benefits
Green roofs slow rainwater run-off, add insulation, support wildlife and protect the waterproofing beneath from UV and temperature extremes.
Installation and Repair
How a green roof is built:
- Check the structure can carry the saturated weight.
- Install a root-resistant waterproof membrane.
- Add protection, drainage and filter layers.
- Lay sedum blankets or substrate and plants, with edge trims and outlets kept clear.
Green Roofs Across Bristol and Bath
We install and repair green roofs on homes and commercial buildings across Bristol, Bath and the towns in between, including Bristol city centre, Clifton, Kingswood, Filton, Bath and Keynsham.
See our residential roofing and commercial roofing services, compare every option on our roofing systems page. For a leak right now, call about an emergency roof repair.
Green Roof Reviews From Bristol and Bath Customers
Our authenticity promise: we only publish genuine reviews from real customers, with their permission. Every review shown here will include the customer’s first name, their area, the work carried out, the date and where the review was left. We never write, buy, edit or pay for reviews.
Reviews from customers who have had green roof work carried out across Bristol and Bath will appear here as jobs are completed. If we have worked on your roof, we would love to hear how it went.
Green Roofs FAQs
How heavy is a green roof?
An extensive sedum roof is relatively light, but still adds significant weight when wet. The structure should always be checked first.
Do green roofs need maintenance?
Sedum roofs need little, usually a check once or twice a year to clear outlets and remove weeds.
Can I put a green roof on my existing flat roof?
Possibly, if the structure is strong enough and the waterproofing is sound and root resistant.
How much does a green roof cost?
It depends on size, type and access. We provide a written quote after a survey.
Why Choose Us for Green Roofs
A green roof is only as good as what is underneath it. We get the waterproofing and drainage right first.
- Honest advice on the right system
- Installed to manufacturer guidance
- Clear written quotes before work starts
- Repairs as well as new installations