Green roofs are created when living plants are grown on a roof structure.
A common feature in Europe, there is an increasing number of green roofs in the United Kingdom.
New construction techniques have created endless opportunities for many different types of green roofs. In particular, technology for the creation of ‘extensive’ green roofs has been developed, where the plants chosen require minimal maintenance are drought-tolerant and will flourish in lightweight substrate at relatively shallow depths.
Lindum Green Roof Mats
Supplied ready-to-roll-out as an instant vegetation layer, with the plants established and growing in a strong felt made from recycled textiles. The Lindum Wildflower Mat and SedumPlus Mat are lightweight, easy to install and low maintenance, available in 2 roll sizes to suit requirements and suitable for use with lightweight green roof substrates.
Lindum can offer a complete green roof package, including lightweight substrate, drainage layer and green roof edge profile. We can also make recommendations for the waterproof membranes, irrigation, stabilisation and pebbles for the borders.
All Lindum’s green roof vegetation mats are lightweight and easy to install. They are supplied ready-to-roll-out as an instant vegetation layer, with the plants established and growing in a strong felt made from recycled textiles.
|PRODUCT REFERENCE||LINDUM WILDFLOWER MAT||LINDUM SEDUM MAT|
|MATERIAL||450gsm felt with scrim||Coconut fibre carrier|
|VEGETATION COVERAGE||75% (minimum) at point of sale||75% (minimum) at point of sale|
||1.2m2 (0.6m x 2.0m)|
|SATURATED WEIGHT||25KG per square metre||25KG per square metre|
|MAXIMUM M2 PER PALLET||40||40|
Lindum Green Roof Substrate is a blend of lightweight manufactured topsoil and lightweight aggregate.
The topsoil is manufactured from reclaimed sand and PAS 100 green waste compost and is certified to BS3882:2015 standards. The specially matured and graded recycled green waste compost provides optimal stability and minimal leaching for organic matter and nutrients. The topsoil is blended with carefully selected and graded lightweight expanded clay aggregate, sourced from the UK.
Lindum’s Green Roof Substrate provides good aeration and water holding properties and controlled fertility levels. It is simple to work with, lightweight, and offers guaranteed consistency throughout the green roof installation.
Available in 1m3 tote bags, 20 litre heat-sealed sacks, or in bulk, Lindum’s Green Roof Substrate provides high quality green roof growing medium with green provenance: peat free and derived from 100% UK-sourced materials.
|PRODUCT REFERENCE||LINDUM LIGHTWEIGHT GREEN ROOF SUBSTRATE|
|MATERIAL||A blend of lightweight aggregate and the award winning topsoil|
|DEPTH||50mm – 100mm (dependant on vegetation)|
|MAXIMUM VOLUME PER PALLET||
Lindum‘s drainage layer product, Roofdrain, is ideal for extensive green roofs as it provides a lightweight drainage layer with a water reservoir to sustain plant growth. Roofdrain attenuates rainfall making it an important element of SUDS system. Roofdrain consists of a perforated cuspated recycled HDPE (high density polyethylene) core with selected geotextiles thermally bonded on each side. The core acts as a water reservoir holding 4.5-5.5 litres per square metre for plants to access in dry periods. The core is perforated to allow excess rainwater to flow into the underside and away to drainage outlets. The upper geotextile also has a ‘zero’ breakthrough head to prevent over-saturation of the substrate. The lower geotextile has two key functions: it offers additional protection to the waterproof membrane and acts as an extra moisture retentive layer, holding an additional 1.0 litres per square metre. This further enhances the water holding capacity of the system and slows the rate of run-off. The Roofdrain is manufactured in the UK from up to 95% recycled material making it a sound environmental choice.
|PRODUCT REFERENCE||LINDUM ROOFDRAIN 20|
|MATERIAL||Recycled High Density Polyethylene water reservoir core with moisture retentive protective fleece to underside and geotextile filter mat to upper side|
|ROLL SIZE||920mm x 50m (46 square metres per roll)|
|WATER STORAGE CAPACITY||6.5 litres per square metre|
|SATURATED WEIGHT||7.5KG per square metre|
|MAXIMUM M2 PER PALLET||92 square metres (2 rolls)|
Lindum Green Roof Edge can be used to retain or separate the green roof materials. Manufactured in the UK from high % recycled content aluminium, supplied pre-punched and profiled in 2.4m lengths in a choice of heights for quick installation. The edging profiles can be colour coated in RAL colours. Please ask for more details.
Other green roof materials
Please contact Lindum for further information on waterproof membranes, root barrier layers and vegetation barriers. We can advise and recommend specialist suppliers of these materials.
Advice on the construction of green roofs is available from many sources including: