GREEN ROOF SYSTEM - WATERPROOFING SYSTEM

ALKORGREEN offers a complete, aesthetic and ecological system for your roof. ALKORGREEN is a green roof system that is as practical for new build as it is for refurbishment projects. The ALKORGREEN system is essentially an extensive green roof system but can be adapted to an intensive and a semi-intensive green roof system.*

Intensive systems are designed with accessibility in mind and may include small trees and bushes.

The ALKORGREEN system is in principle an extensive green roof system but can be adapted to an intensive and a semi-intensive greenroof system.*

The ALKORGREEN system also benefits from reduced weight and low maintenance.

alkorPLAN® for green roof

alkorPLAN® for green roof

*With many years experience of green roofs it is proven that with such a wide and varied plant choice there are few limits to the design possibilities. Such roof gardens are work for specialists and cooperation between the roofing contractor and the sedum specialist is essential. Every green roof design will differ in some way so RENOLIT Waterproofing UK offer a full technical service. If you are interested in a semi intensive green roof, please contact RENOLIT UK ltd.

ADVANTAGES

Oxygen production
Green roofs contribute to an improved air quality, especially in urban environments where the quality of the air is often unsatisfactory. The vegetation on the rooftop produces oxygen on the one hand and absorbs polluted particles from the air on the other hand

Improved sound-proofing
An ALKORGREEN roof system serves as an excellent sound insulator. Green roofs can be very efficient in reducing indoor noise attenuation from hail and rainfall etc…

Benefiting the urban environment
Green roofs create more natural green areas in the urban environment. The plants on the roof give the owners a more natural view, instead of the increasingly dominating black or grey flat roof surfaces.

Reduction of heating/cooling costs
A green roof provides extra insulation and energy efficiency for the building. Because of its insulating properties, Alkorgreen roofs have a large impact on the interior temperatures, reducing the amount of energy needed to heat a building in winter and to cool the building in summer. As a result, ALKORGREEN SYSTEM ROOFS operate more efficiently than the traditionally roofed buildings, resulting in lower energy costs for the building owner.

New environment for the fauna and flora
A living roof brings nature into the cities and industrial areas. It offers a high biodiversity that may prevent some animals from disappearing from the urban environment. Apart from this, green roofs may offer high-rise flat residents a functional space or entertaining area, replacing the traditional garden.

Reduction of rain water run off.
Green roofs absorb large quantities of the rain water and keep it from heading immediately into the drainage systems and into the rivers. In the case of significant rainfall, the runoff is delayed further reducing the pressure on storm drains, etc..

Increased life expectancy
of the waterproofing membrane
Green roofs protect roof membranes from UV and IR radiation, ozone, extreme temperature fluctuations, punctures and other physical damage. The ALKORGREEN roof system can thus significantly increase the life expectancy of roof membranes, diminishing the need for costly roof replacements and maintenance..

The ALKORGREEN system is “standard” for roofs with a slope from 1° to 5° *

Sedum/Substrate (6cm) and vegetation In the case of large projects, we advise sedum cuttings to be sown onto a substrate layer of about 6 cm. For smaller projects, we recommend the use of pre-cultivated layers. The substrate layer ensures feeding substances, water supplies to the vegetation plus oxygen and anchoring of the root structure. alkorPLUS®81016 water retention layer This layer provides the plants with extra water in time of drought or prolonged high temperatures. This allows the plants to continue growing and maintain their life expectancy. alkorPLUS®81015 filter- and drainage layer This layer is in two parts. The filter layer limits particles from the substrate layer migrating into the drainage layer causing blockages. The drainage layer ensures a steady removal of redundant water which is not held by the water retention layer. alkorPLUS® 81014 slip layer or alkorPLAN®35121 protection layer This layer provides additional protection to underlying layers. alkorPLAN® LA waterproofing membrane (1.5 mm) This product provides a watertight roof and is totally unaffected by roots. Fully glued with adhesive alkorPLUS® 81068) Faced insulation Vapour barrier Structure