CI/SfB | January 2011
Innovative Green Roof Systems
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The IKO Group
IKO is a worldwide group of companies with extensive experience and specialist technical knowledge. IKO is a leader in the design, manufacture and installation of proven roofing and waterproofing systems.
Continued success At IKO, we believe that the foundation for continued success and longevity of our company is based on several key attributes;
The IKO Group was founded in 1952 in Calgary, Canada and offers customers across international markets a comprehensive range of waterproofing, roofing and insulation materials.
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A global leader in the manufacture and supply of waterproofing and insulation Customers in more than 70 countries Over 30 factories worldwide.
IKO Europe I Established as a leading roofing, waterproofing and insulation supplier in Europe I Factories in the UK, Ireland, Belgium, France, Holland and Slovakia I Distribution centres and sales offices in Germany, Poland, Czech Republic, Slovakia, Hungary, Romania, Ukraine and Russia.
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The knowledge of our people Top quality products Outstanding customer service Continuous innovation Excellence in manufacturing.
Our mission is to further strengthen and expand our offer through continuous development, innovation and technological advancement. We strive to remain the first choice for architects, specifiers and installing contractors throughout the world into future generations. IKO in Europe
Contents
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Roof gardens from a waterproofing perspective
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Why have green roof systems? Features and benefits of green roof systems
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What are the green roof options? Green roofs made easy
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Typical build-ups Product list
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Green roofs from a waterproofing perspective Waterproofing – Every successful green roof system is built upon a sound waterproofing foundation. Selecting a waterproofing manufacturer and roofing system you can trust are essential to give long term, guaranteed performance. Through its high profile brands, IKO PLC has a rich heritage in the design and installation of waterproofing systems, dating back over a century. The company has built up its reputation on close working relationships with specifiers, contractors and clients in the public/ private sectors, on extensive new build and refurbishment projects. We offer the most comprehensive range of selected waterproofing systems compatible with green roof finishes. Ensuring that exactly the right product is specified for the right project, no other manufacturer can provide such a diverse product offer. Our high performance systems include:
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Reinforced bituminous membranes
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Polymer modified mastic asphalt
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Polymeric single ply systems
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Hot melt monolithic systems.
Example of a biodiverse roof incorporating a wetland pond
at the heart of every green roof For extra peace of mind, the
feature a full range of
standards for all projects.
IKOgreen roof package
waterproofing, drainage and
Fully supported by an
includes a full quality
filter layer options, along with
unrivalled technical service
assurance check of the
growing medium, planting
and design team from
waterproofing system prior to
schemes and accessories for a
consultation to completion and
the green roof being installed.
variety of roofing applications.
beyond, this is all backed by a comprehensive range of
To complete the perfect
In addition, IKO works
project, quality green roof
exclusively with leading
components and professional,
horticultural specialists and
reliable installation are a
approved roofing contractors
must. Our green roof systems
to ensure the highest
waterproofing guarantees.
Green roof finishes, once installed, can make it very difficult to identify and repair leaks in a waterproofing membrane. That’s why it is important to get the whole system right first time. And that’s why IKO is the right choice. 5
Why have green roof systems? Urban development over the last 50 years has led to the paving over of large areas of countryside with cities and supporting infrastructure. Even the traditional areas of parkland and green spaces within our cities have come
percentage of rainwater and provide slow, controlled water run-off, thereby reducing the load and allowing much faster evaporation of accumulated moisture.
under increasing pressure. High rise development in major cities reduces the natural airflow, adding to dirt and pollution, higher temperatures and lower humidity levels.
Replacing land lost to construction by landscaping the roofs of our buildings can help to redress the balance of nature by significantly improving air
Green roofs improve air quality by
In addition, cities and industrial areas
quality and reducing water run-off.
attracting particles to the vegetation and
are increasingly impervious to water,
Green roofs can improve the acoustics, thermal properties and
soil. Plants also absorb airborne
reducing permeable ground to absorb
pollutants through the leaves, removing
rainwater run-off. Hard construction
aesthetic qualities, while also
them from the environment, and during
materials (concrete, tarmac roadways,
providing additional space for
the natural process of photosynthesis
roof tiles etc.) discharge water very
recreational and leisure purposes. And
plants convert carbon dioxide to
quickly, reducing effective evaporation
they can significantly increase the life
oxygen, which improves the immediate
and loading the drainage systems,
of the waterproofing membrane,
air quality.
which in turn can lead to flooding.
protecting it from UV degradation and
Green roofs retain a very high
the extremes of climatic conditions. A
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Example of extensive roof for award winning recreational eco-lodges
Features and benefits Acoustic performance
Green roof features and benefits
Improvements to the acoustic performance
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Enhances environment
when installing a green roof finish can
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Improves aesthetic appearance
play an important part in the overall
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Controls storm water run-off into surface water drainage system
soundproofing of the building. Indicative figures for potential sound reduction can
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Reduces noise transmission by upgrading acoustic performance
be provided on request. I
Improves thermal performance
Water retention (reducing storm
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Improves ambient air quality
water run-off)
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Increases life expectancy of waterproofing membrane
The reduction in storm water run-off is a major benefit. From the results gained by
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system can absorb approximately 50% of the rainwater falling on it, and also
Extensive green roofs require little long-term maintenance
practical trials, the average extensive I
Intensive roof gardens can be accessed for recreational use
significantly delay the passage of the remaining water, reducing the pressure on drainage facilities and flooding. Intensive systems incorporating sufficient soil depth to support planting schemes, can retain up to 75% of rainfall. Tests have also indicated that greater soil depths may retain up to 90% of rainfall. Thermal transmission In addition to the thermal insulation installed as part of the waterproofing system, green roofs can further reduce the energy consumption of a building by up to 10%. Full thermal analysis can be carried out on the specified build-up.
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What are the green roof options? Extensive green roofs
Intensive roof gardens
Biodiverse (brown) roofs
These are constructed using low
The landscape variations are
These are another form of extensive
maintenance planting, without the need
practically limitless, and it is feasible
green roof (i.e. low maintenance) that
for specific irrigation. Sedums (succulents)
to create an environment at roof level
make use of recycled materials (e.g.
and indigenous herbs and grasses
similar to that of any designed garden.
crushed brick, crushed concrete etc.)
provide excellent cover and protection
An increased quantity of growing
in the growing medium. This type of
to the waterproofing system. They do
medium, improved drainage layers
green roof is intended to create a
not provide usable space or a surface
and irrigation systems are generally
natural wasteland and can be seeded
that can be trafficked, but add instantly
required to support the greater diversity
initially with selected species to create
to the aesthetics, improve the local air
of planting. Shrubs and trees can easily
some growth. However the basic
quality and help to control rainwater
be accommodated, and there is little to
design is to attract fauna and flora
run-off into surface water drainage
restrict scope for design other than the
of all kinds. As the growing medium
systems. In addition, a correctly
overall weight of the system and the
is not of high nutritional value, larger
designed system upgrades the acoustic
cost of its supporting construction.
and thermal performance of roof finishes.
plants are not likely to survive and will die off creating further suitable habitat for invertebrates which in turn will attract other fauna.
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Example of semi-intensive/hybrid roof with wildflower turf
Green roofs made easy Root penetration protection
Falls and drainage
Maintenance/safe access
Regardless of whichever waterproofing
Minimum falls of 1:60 are
Proper protection must be provided
system is proposed, it must be capable
recommended for green roof decks.
where ongoing building maintenance is
of preventing the penetration of roots
Falls below this figure can be
required (e.g. window cleaning),
from the planting scheme. All IKO
accommodated but special drainage
including paved walkway areas. With
systems used in conjunction with green
facilities may be required. Where
an intensive roof finish, access and
roofs are designed to resist root
internal outlets are the only method of
working methods must also be provided
penetration (See individual specifications
roof drainage, at least two specialist
for the safe ongoing maintenance of
for details).
outlets per roof area should be installed
planted areas.
with the required protection to prevent Structural loading
access by soil and debris. On roofs
Note: Detailed planned maintenance
The saturated weight of a green roof
surrounded by high parapets, the use of
information is available with
system must be considered at the initial
indicator overflows is advised, however
specification information.
design stage when considering any form
they should not be considered as a
of green roof system. IKO’s dedicated
replacement for proper roof drainage.
Technical Services Team can provide indicative loading information for assessment purposes and specific system weights at final specification stage.
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Green roof systems Typical build-ups Extensive Green Roof
Typical build-up: illustrated using high performance bituminous waterproofing
Other suitable waterproofing options: I
IKO Sedum Blanket IKO Growing Medium
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Filtration Layer Drainage Layer Separation Layer Protection Layer
IKO Plasfeed Drainage Layer
IKO Anti-Root Bituminous Roofing System IKO Enertherm PIR Insulation IKO Vapour Control Layer
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Permaphalt Polymer Modified Mastic Asphalt SpectraROOF Polymeric Single Ply IKO Polimar Liquid Applied
Substrate
Intensive Roof Garden
Typical build-up: illustrated using polymer modified mastic asphalt
IKO Shrubs and Plant Finishes
Other suitable waterproofing options: I
IKO Growing Medium Filtration Layer Drainage Layer Separation Layer Protection Layer
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IKO Plasfeed Drainage Layer I
Supertherm XPS Extruded Polystyrene Permaphalt Polymer Modified Mastic Asphalt
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IKO Anti-Root Bituminous Roofing System SpectraROOF Polymeric Single Ply PermaTEC Anti-Root Hot Melt Monolithic System IKO Polimar Liquid Applied
Substrate
Biodiverse (Brown) Roof
Typical podium deck build-up: illustrated using hot melt waterproofing
Selected Plants and Self-Seeding Natural Growth IKO Growing Medium Filtration Layer Drainage Layer Separation Layer Protection Layer
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IKO Plasfeed Drainage Layer
Other suitable waterproofing options: I
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Supertherm XPS Extruded Polystyrene PermaTEC Anti-Root Hot Melt Waterproofing Substrate 10
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Permaphalt Polymer Modified Mastic Asphalt SpectraROOF Polymeric Single Ply IKO Anti-Root Bituminous Roofing System IKO Polimar Liquid Applied
Product list Waterproofing Options IKO manufactures and supplies a wide range of high performance waterproofing options suitable for use with green roofs. Key systems include:
IKO Plasfeed Drainage Layer
Thickness (mm)
Dimensions (m)
Area per roll (m2)
25
20 x 1.25
25
IKO Anti-Root Bituminous Roofing System – high performance slate surfaced cap sheet consisting of a high tensile polyester base, coated with polymer modified bitumen containing a specially formulated root resistant treatment. This cap sheet achieves FLL 4 year root
IKO Plasfeed Water Reservoir Panel Water absorbing mineral wool panels for use as an additional water reservoir within the build-up of a green roof.
penetration.
Thickness (mm)
PermaTEC Anti-Root – the world’s first monolithic hot melt waterproofing system with built-in root protection. Unlike other hot melt systems, PermaTEC Anti-Root does not require a separate anti-root membrane, making the specification and installation process simpler and more cost-effective.
IKO Plasfeed 50 Water Reservoir Panel
Dimensions (m)
Area per roll (m2)
1 x 0.6
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IKO Drainage & Edge Retention Trims L-shaped metal edging profiles that retain the extensive landscaping system at roof edges and at intermediate
Permaphalt – specially formulated mastic asphalt roofing
positions on the roof, whilst allowing full drainage to the
system, using advanced polymer technology to give the
external rainwater systems.
ideal combination of long-term durability, increased fatigue resistance, improved temperature stability and ease of
IKO Vegetation Layers & Growing Mediums
installation.
IKO Sedum Blankets are supplied with Lydium,
Spectraplan TPE – environmentally friendly single ply
Hybrium, Album, Acre, Reflexum, Sexangular and Spurium
waterproofing system with a unique formulation containing
sedum plants as standard. They are already grown onto a
both thermoplastic (TP) and elastomeric (E) properties. It is
root retention/substrate layer. IKO also offers a range of
highly durable, and offers a flame-free application as
plug plants specially grown in line with FLL Directive,
membrane laps are homogenously welded using hot air.
featuring sedum, herbaceous plants and grasses.
IKO Polimar – high performance liquid applied
IKO Wildflower Turf is ideal for creating a truly natural
polyurethane roofing system. IKO Polimar systems are cold-
landscape, providing a food source for birds and a
applied, seamless and provide a long-lasting barrier to
favourable habitat for butterflies and other insects. The
water penetration. They are also ideal for use on areas
plants in flower will vary through the spring and summer
with difficult access or intricate detailing requirements.
and the emergence of flowers and the type of plants that
For further guidance and advice on the most suitable waterproofing option for your project, please contact our Technical Services Department on 0844 412 7207.
flower will vary from year to year according to temperature, moisture and available nutrients. IKO’s Growing Mediums are specially formulated mixtures. The formulation carefully balances the requirements of plant sustenance, water retention and
IKO Plasfeed Drainage Boards
ensures propagation of the selected plants.
CE marked drainage composite boards consisting of a
IKO Biodiverse (Brown) Substrate is a lightweight
dimpled perforated sheet of high impact polystyrene with
substrate made from coarse recycled brick and aircrete,
a non-woven filter fabric bonded to each dimple.
composted bark and medium clay soil. The substrate has
The drainage composite is provided with a pressure
been carefully designed to accept wildflower seeding and
dividing moisture diffusion open filter fabric on the back.
promote the natural colonisation of habitat plant life, to
The system comprises the filter layer, the drainage layer,
encourage the successful development of local wildlife.
the separation layer and the protection layer all as one integrated unit. These boards are also suitable for use on
IKO Filter Fleece
inverted roofs.
A 110g/m polyester filter layer, preventing the flow of
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fine particles to penetrate the drainage system.
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A Complete Service IKO provides a full service offer from initial consultation through specification and design to ongoing monitoring and maintenance. Our ISO 9001 accredited Technical Services Team offer practical and modern design solutions, whilst ensuring that the requirements of the current Building Regulations and British Codes of Practice are not compromised. Architects, specifiers, installing contractors and building owners alike have come to rely on the proven technical expertise provided by IKO, for both new build and refurbishment projects nationwide. I I I I I I I I I I
Full support for your green roof project IKO will work with you to ensure that every stage of your project goes smoothly and to the agreed schedule. Before any green roof finishes are applied the technical services team will inspect and approve the finished waterproofing, including an electronic roof integrity test. IKO extensive roof installation package The sedum finishes used in extensive roof design are living plants and as such, care must be taken to help them flourish. IKO will support your project with a first year monitoring schedule with an integral maintenance programme to ensure the horticultural finishes establish quickly and grow to maturity.
Design assistance On-site advice Thermographic roof surveys Bespoke specifications Project monitoring Performance guarantees Technical & safety information Customer training Approved contractor/installer network Continuing Professional Development (CPD).
Membrane Manufacturer
Mastic Asphalt Council
IKO PLC
Sales Support
Northern Ireland
Ireland
Appley Lane North
T: 0844 873 1062
14 Sanda Road,
502 Northwest Business Park
Appley Bridge
F: 0844 873 1067
Whitehouse, Newtownabbey
Ballycoolin
Wigan
E:
[email protected] County Antrim BT37 9UB
Dublin 15
Lancashire WN6 9AB
Technical Services
T: 028 9086 7079
T: 01 8855 090
www.ikoroofing.co.uk
T: 0844 412 7207
F: 028 9086 9079
F: 01 8855 858
Member of the IKO Group
F: 0844 412 7208
E:
[email protected] E:
[email protected] E:
[email protected] www.iko-ni.com
www.iko.ie
Whilst every care is taken to see that the information given in this literature is correct and up to date, it is not intended to form part of any contract or give rise to any collateral liability, which is hereby specifically excluded. Intending purchasers of our materials should therefore verify with the company whether any changes in our specification or application details or otherwise have taken place since this literature was issued. Colours in this brochure are as accurate as the printing process will allow. The paper used to print this brochure is manufactured using only natural wood pulp originating from managed, sustainable plantations, and is chlorine and acid free.
sharecycle In IKO’s book, it’s better to recycle or redistribute