|
|
|
|
|
Roofs are the most stressed part of a building. The roofing membrane is exposed to a diversity of agents that accelerate the degradation of the material. Sunlight, UV radiation, wind, pollution, snow and frost, temperature fluctuations, hail and lightning storms are only a few of the big list of influences that the membrane is exposed on a flat roof. Also, the huge diversity of equipments (AC, chimneys, etc) that are normally installed on flat roofs, can easily promote the premature aging of the materials and reduce its lifespan. Therefore, the roofing membranes need to be highly resistant and have a lasting life protecting the roof without interfering with the environment.
1 Substructure
2 Vapor Barrier
KÖSTER Vapor Barrier acc. to DIN 18234
3 Insulation
4 KÖSTER TPO Membrane
KÖSTER TPO 1.2
KÖSTER TPO 1.5 FR
KÖSTER TPO 1.8
KÖSTER TPO 1.8 FR
KÖSTER TPO 2.0
KÖSTER TPO 2.0 FR
KÖSTER TPO Pro 1.2
KÖSTER TPO Pro 1.5
KÖSTER TPO Pro 1.8
5 Mechanical fasteners
The most common method of installing TPO membranes is through mechanical fastening. The membrane is mechanically fastened to the roof structure, which can consist of either wooden sheathing, trapezoidal sheets, or a concrete slab.
The membrane is generally fastened through the thermal insulation, which requires special fasteners. Overlapping the membranes prevents the penetration of water into the installation.
Due to its great compatibility with various materials such as bitumen, the KÖSTER TPO Membrane is suitable for use in the renovation of roof waterproofing systems as well. For instance, the KÖSTER TPO Membrane can be directly fastened to the substructure without having to remove the old waterproofing system, as long as the substrate is intact and structural aspects do not indicate otherwise.
Mechanical fastening allows for a quick installation and provides a high resistance to wind loads without placing an additional load upon the waterproofing system. Thus, the roof structure is comparatively light in weight. Furthermore, mechanical fastening guarantees that the membrane will not slip, even on pitched roofs. Mechanical fastening even makes a green roof on a pitched roof possible.
1 Substructure
2 Insulation
3 KÖSTER TPO Membrane
KÖSTER TPO 1.5 F
KÖSTER TPO 2.0 F
4 Adhesive
KÖSTER 2C PUR Membrane Adhesive
Full surface adhesion to the substrate offers a time-saving installation. The KÖSTER TPO Membrane features a special fleece coating on one side, which increases the bonding of the KÖSTER PUR Membrane Adhesive or the KÖSTER 2K PUR Membrane Adhesive. This results in a high adhesive strength and creates a perfect bond to the substrate.
It is important that the substrate is suitable for a good adhesive bond. If necessary, an adhesive bridge can be applied. In addition, a wind load calculation must be carried out prior to the adhesion of the membrane in order to provide information about the amount of adhesive required and the alignment of the welding seams.
The KÖSTER PUR Membrane Adhesive is applied in strips to the substrate, before unrolling the fleeceback coated KÖSTER TPO Membrane. The membrane is then firmly pressed onto the substrate using a cylinder in the same width of the membrane. This enables the adhesive to be spread evenly and help achieve uniformity of the bond. When distributing the adhesive care must be taken to ensure that no adhesive on the welding edges is spread.
1 Substructure
2 Vapor Barrier
KÖSTER Vapor Barrier acc. to DIN 18234
3 Insulation
4 KÖSTER TPO Membrane
KÖSTER TPO 1.5 FR
KÖSTER TPO 1.8
KÖSTER TPO 1.8 FR
KÖSTER TPO 2.0
KÖSTER TPO 2.0 FR
KÖSTER TPO Pro 1.2
KÖSTER TPO Pro 1.5
KÖSTER TPO Pro 1.8
5 Protection Layer
6 Ballast System
A quick and secure way to install KÖSTER TPO Membranes is through loose laying with ballast over the membrane. Ballast can consist of either gravel, paving slabs, or even green roofs. Ballast helps protect the roofing membrane against wind loads and can accommodate a wide range of architectural styles.
The main advantage of this installation method is that the roofing membrane does not need to be mechanically fastened to the substrate. Due to the weight of the ballast, higher loads must be taken into consideration in the roof load calculation.
1 Substructure
2 Insulation
3 KÖSTER TPO Membrane
KÖSTER TPO 1.5 SK (FR)
KÖSTER TPO 2.0 SK (FR)
4 Adhesive
KÖSTER 2C PUR Membrane Adhesive
1 Substructure
2 Vapor Barrier
KÖSTER Vapor Barrier acc. to DIN 18234
3 Insulation
4 KÖSTER TPO Membrane
KÖSTER TPO 1.8
KÖSTER TPO 2.0
5 Protection Layer
6 Drainage Sheet
KÖSTER SD Protection and Drainage Sheet 3-250
7 Protection Layer
8 Ground / Greenery / Landscaping
The benefits of a green roof are diversified and can go from the simple, but effective protection of the membrane itself, to the insulation advantages to the building and structure.
Green roofs can represent real opportunities for significant social, economic, and environmental benefits, particularly in cities.
The real benefits can go from the simple efficiency of retaining a part of the rain water, the moderation of urban heat effect, the improvement of air quality, to act as a fire retarding agent, noise reduction by absorbing decibels, and many others. These are only a few of examples of the reasons to choose Green Roofs.
