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Rolawn

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Double garage with green roofs on timber new build
Garage Green Roof Detached House
Garage Green Roof on a Summer house with home office and Peloton in the UK
Green Flat Roof Kit - Image 4

Green Flat Roof Kit

The green flat roof kit is a lightweight option, making it ideal for applications such as garden buildings and garages that are low-weight-bearing. These DIY green roof kits are easy to install with no experience needed and are available in two sizes: 18m2 and 24m2.

Price range: £1,475.00 through £1,899.00

  • Lightweight green roof solution

  • Easy to install with no experience needed

  • Captures and purifies rainwater

  • Improve root growth

  • Low construction height

Our flat roof kit has various layers that help capture, purify and slowly release it into drainage, improving the safety and quality of our sewers. It is made up of lightweight materials, making it suitable for roofs that are low-weight bearing, such as garden buildings and garages.

These kits instantly add green to your structure, with an easy-to-install system and improved root growth. Adding plants to your environment improves the air quality without compromising space.

What is a green roof?

There are many types of green roofs, starting at the base level of extensive and intensive. Our green roof kits are both extensive green roofs, which are made with a shallower substrate and are lightweight for use on low-bearing roofs. Extensive roofs usually include sedum, mosses and grasses for a lighter-weight finish. These roofs hold less water with our Lightweight Green Roof Kit having up to approximately 25L/m2 water storage capacity and the Green Flat Roof Kit holding up to approximately 31L/m2. Intensive roofs are used on larger infrastructure with plants such as trees and bushes, for a heavier green roof. These kinds of green roofs hold much more water.

 

Images are rendered for illustrative purposes only. Final appearance may vary.

What’s in the kit?

The Green Flat Roof Kit includes everything needed to create a simple, effective extensive green roof on a garage or small outbuilding:

UrbanScape Sedum Mix

A pre‑grown sedum blanket that delivers instant coverage and long‑term resilience on extensive green roofs.

  • Multi‑species planting – a varied sedum mix encourages biodiversity and seasonal interest
  • Naturally drought tolerant – water‑storing leaves help plants cope with changing weather
  • Fast visual impact – supplied with high coverage for immediate green roof effect

UrbanScape Green Roll 20 (Standard)

A lightweight, engineered growing medium designed to support consistent sedum establishment.

UrbanScape Drainmat P20‑G

A durable drainage layer that helps regulate water flow within the green roof system.

  • Efficient drainage support – helps manage excess water beneath the growing layers
  • Structured design – promotes reliable performance across the roof surface
  • System‑compatible – designed for use within extensive green roof build‑ups

UrbanScape Geotextile 300 MF

A protective geotextile layer designed to safeguard the waterproofing membrane and support effective filtration within extensive green roof systems.

  • Mechanical protection – helps prevent physical damage to the waterproofing layer
  • Fine particle control – reduces migration of fines between roof layers
  • UV‑stabilised fibres – supports durability and long‑term performance

UrbanScape Sedum Conditioner (3 kg)

A specialist conditioner formulated to support healthy sedum establishment and ongoing growth on extensive green roofs.

  • Targeted nutrition – helps replenish nutrients within the growing layer
  • Supports plant vitality – encourages strong establishment and resilience
  • Maintenance friendly – suitable for use at installation or as part of routine care

UrbanScape QuickBox 100

 A compact roof outlet solution designed to provide a clear and reliable drainage point through green roof layers.

  • Efficient water management helps direct surface water away from the roof
  • Compact design ideal for garages and smaller roof areas
  • System compatible integrates easily within extensive green roof build‑ups

 

Green Flat Roof Kit includes

Unit

18 m² Kit

24 m² Kit

Urbanscape Sedum Mix Blanket (Slabs)

m²

18

24

Urbanscape Green Roll 20

m²

18

24

Urbanscape Drainmat P20-G

m²

18

24

Urbanscape Geotextile 300 MF

m²

20

26

Urbanscape Sedum Conditioner (3 kg)

pack

1

1

Urbanscape QuickBox 100

box

1

1
  • Two sizes available – 18m2 and 24m2
  • Water storage capacity of up to approximately 31 litres/m2
  • Saturated weight of up to approximately 49kg/m2
  • Prices include VAT and delivery to most UK mainland addresses

Delivery is free of charge on all orders to the majority of UK mainland addresses*; you can select your preferred delivery date for Turf, Handy Bag and Bulk Bag orders in the checkout, before payment. Saturday delivery is available for a set fee of £72 per order (including VAT).

You will receive an email following your order confirmation which will advise you of the delivery method for your delivery address, i.e. ‘Tail lift & manual pallet truck’, or ‘Hiab’.  Further details can be found in our *Delivery Policy.

Please note, in exceptional circumstances, the delivery method stated may not be possible, in which case our Customer Service Team will contact you with an alternative solution.

  • Medallion Turf & Biodiverse Turf: Free delivery is available Tuesday – Friday for most addresses (EH postcodes-only: Monday – Friday). Saturday delivery is available  for a surcharge of £72 per order.*
  • Bulk Bags, Handy Bags & Green Roof Kits: Free delivery dates are available Monday – Friday. Saturday delivery can be selected for a surcharge of £72. If bags are ordered with Turf, the available dates shown in checkout will be Tuesday – Saturday.*
  • Wildflower Turf: Delivery is free of charge Tuesday – Thursday. Saturday delivery is unavailable.* Wildflower Turf will be delivered separately to any other items on the same order.
  • Grass Seed & Fertiliser: Where these products are ordered with Turf or Bulk Bags we will endeavour to deliver them together, however if purchased separately they will arrive within 2-3 working days via courier, Monday – Friday.

Take a look at our Ordering & Delivery Frequently Asked Questions

Fuel Surcharge

We have worked hard to mitigate the impact, but due to the current disruption to energy supplies a fuel surcharge of 6.5% will be added to all orders. We appreciate your understanding. Full details can be found in our Delivery Policy.

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Important update: Temporary 6.5% surcharge effective 7 April 

At Rolawn, we are committed to maintaining the high standards of quality and service our customers expect, so we want to be open with our customers about a change that will affect pricing from Tuesday 7th April. 

This decision has been taken in response to disruption to energy supplies, which has led to significant increases in wholesale prices, affecting not only fuel and fertiliser but also costs throughout our wider supply chain. As a business that relies heavily on fuel for both transport and operations, these sustained cost pressures have become increasingly difficult to absorb.  

While we have worked hard to mitigate the impact, the scale and pace of recent price increases have now exceeded what we can sustain internally, and we therefore need to recover a proportion of these externally driven increases. 

From Tuesday 7th April, a temporary 6.5% surcharge will apply to all products.  

We know that any increase in price is frustrating, particularly at a time when many businesses and households are already feeling under pressure. That is why we want to be clear that this is not a decision we have made lightly, and not one we wanted to make. It has been introduced solely to help offset unavoidable cost inflation and allow us to continue delivering the quality, reliability and service standards associated with Rolawn. 

We will continue to monitor market conditions closely and will review this surcharge as soon as circumstances allow, providing reasonable notice of any changes. We recognise that any price increase is unwelcome, but this step is necessary to ensure the continuity and reliability of our operations during a period of ongoing uncertainty. 

We remain committed to providing the quality, reliability and service standards you expect from Rolawn, and we truly appreciate your understanding and continued support. 

If you have any questions, please contact our customer support team who will be happy to help.