WaterproofingSystems

Roof Waterproofing
 with Thermoplastic
 Polyolefin Membranes
KÖSTER TPO Membranes

In the field of roof waterproofing, high-quality materials and skilled workmanship can not only
make a difference but actually save time and money. The KÖSTER BAUCHEMIE AG has been a
worldwide leading manufacturer of high-quality roofing and waterproofing membranes for 30
years.

KÖSTER TPO Membranes stand out through their excellent

application characteristics, flexibility, and weldability. The
unique composition of polyethylene (PE) allows for the easy and
uncomplicated welding of seams due to:
• a wide temperature range
• no chemical cleaning required
• long lasting weldability of the membrane

Advantages of TPO Roofing Membranes

Does not contaminate Direct application to EPS
groundwater insulation possible

UV resistant Low maintenance

Resistant to root and Rotproof

rhizome penetration

Does not contain Acid and kerosene

non-molecularly resistant
bound plasticizers

Customizable color Resistant against

Microorganisms

Installation methods:

Mechanical fastening Loose laying with Bonded application Green roofs

ballast

KÖSTER TPO Roofing Membranes 2 | 3

Flat roofs

Roofs are affected by various exposures such as In choosing a roof type, the following factors
cold, heat, rain, hail, snow, extreme wind, UV must be considered:
and infrared rays, as well as many different types
of chemicals. Additionally, roofs are subject to - Safety
movement and other mechanical stresses from - Durability
the construction itself. As a result, roofs must be - Economic efficiency
able to withstand a lot of stress. Continuously. - Environmental impact
- Light weight
At the same time occupants and users place a - Easy installation
variety of demands on roofs. They should be - Low maintenance
architecturally sophisticated, offer roof terraces
with plenty of comfortable space to relax, or If roof waterproofing is well planned and
provide energy through attached solar panels. In executed, the building will be protected over
addition, many other installations and structures many decades.
can be found on roofs such as ventilation shafts,
transmitter masts, and chimneys.

References

Flat roof waterproofing with KÖSTER TPO, Flat roof waterproofing with KÖSTER TPO,
REAL Supermarket, Germany Schiphol Airport, Amsterdam

Flat roof waterproofing with KÖSTER TPO, Flat roof waterproofing with KÖSTER TPO,
Pingo Doce Supermarket, Portugal EDEKA Supermarket, Germany

KÖSTER TPO Roofing Membranes 4 | 5

Green roofs

In its immediate environment, a green roof

can have a positive impact on humidity, solar
radiation, and air temperature. For instance,
3 during summer months plants absorb and
reflect a large part of UV radiation.

Moreover, a further positive effect is observed

through the evaporation of water on the leaf
surface causing subsequent evaporative heat loss.
In fact, various measurements show a temperature
difference up to + 10 °C between green and
ungreen roof surfaces during midday hours.

KÖSTER TPO Membrane (green); (1) Insulation; (2) Substructure; (3) Landscaping

Protection against Ecological

Proven root resistance
UV-radiation compensation areas

KÖSTER TPO membranes can be loose laid under green roofs where the green roof serves as a ballast
and protects the membrane against wind uplift. Additionally, KÖSTER TPO Membranes are resistant
to root and rhizome penetration. This allows for planting and cultivation directly on top of the
membrane.

KÖSTER TPO Roofing Membranes 6 | 7

Cool roofs

Achieving energy efficiency through color: less heat is produced from sun exposure onto light
surfaces than onto dark surfaces.

With the KÖSTER TPO Membrane in white, sunlight is reflected. As

a result, the roof temperature in reduced. In addition to lowering
the cooling demand for the entire building, a low roof temperature
also increases the efficiency of the installed photovoltaic system.
In cases where a ventilation system is present, the transportation
of cool air throughout the building is also dramatically increased.
This leads not only to reduced energy consumption but also has a
positive effect on the environment.

The white KÖSTER TPO Roofing Membrane achieved an outstanding score of 106. The Solar
Reflectance Index (SRI) measures the solar reflectance of surfaces. The reference SRI value for a black
roof is 0, while the reference SRI value for a white roof is 100.

Energy efficient high SRI value (106) Cooling effect

Solar reflective KÖSTER TPO white

reflects 20% reflects 80%

dark surfaces light surfaces

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Our Service

We want our partners to benefit from our technical know-how and experience. The distribution of our products
via technical consultants ensures that our customers receive the support they need in order to apply our products
effectively and properly. This long-term thinking in the interest of our customers is very important to us. As a
result, technical support is an integral part of of our service.

Technical support

On-site consultation

Practical and theoretical

trainings
The KÖSTER Warranty Program

Premium Premium Plus

A warranty claim exists provided leakage in KÖSTER A warranty claim exists provided leakage in KÖSTER
TPO membranes have resulted from material failure. TPO membranes have resulted from material failure.
Warranties must be requested individually for each Warranties must be requested individually for each
construction project in advance. Warranties are valid construction project in advance. The warranty is valid
for a period of 10, 15, or 20 years. for a period of 25 years.

The warranty covers: The warranty covers:

• Up to 20 years for KÖSTER TPO membranes • Up to 25 years for KÖSTER TPO membranes
with a thickness of 2.0 mm with a thickness of 2.0 mm
• Up to 10 years for KÖSTER TPO membranes • Free material replacement
with a thickness of 1.5 mm and 1.8 mm • Reimbursement of labor costs for the installation
• Free material replacement of membranes
• Reimbursement of labor costs for the installation • Material replacement for any damaged
of membranes components included in the roofing system
• Material replacement for any damaged • Reimbursement of labor costs for the
components included in the roofing system replacement of any damaged components
• Reimbursement of labor costs for the included in the roofing system
replacement of any damaged components + The policyholder only pays a one-time
included in the roofing system surcharge per m² of roof area during the entire
warranty period
+ Reimbursement of consequential damages
incurred and resulting financial losses covered
by an extended product liability insurance policy
from the Allianz AG

Premium Premium Plus

Additional product
liability insurance policy
Material warranty
from the Allianz AG

up to 20 years up to 25 years

KÖSTER TPO 1.5 - 2.0 KÖSTER TPO 2.0

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Building and Sustainability

The KÖSTER BAUCHEMIE AG is committed to preserving and protecting the environment. We use state-of-the-art
raw materials and production technologies in conjunction with a strong and continuous research and development.
Today, this means that most of our materials are solvent-free and formulated to minimize environmental impact,
as well as protect the health of those who work with our materials. Additionally, the KÖSTER BAUCHEMIE AG is a
member of IBU, a German institute dedicated to sustainable building. As a member, the KÖSTER BAUCHEMIE AG is
required to provide full transparency regarding the environmental impact of its products.

KÖSTER TPO Roofing Membranes also allow the possibility of a light and resource-saving roof structure. They can
reflect sunlight (in light colors) and can thus reduce the energy consumption of air conditioning systems, especially
in warmer regions. Additionally they can be optimally combined with modern insulation materials and permit
the installation of solar panels. In contrast to other roofing membranes, KÖSTER TPO Roofing Membranes can be
recycled and do not release plasticizers into the environment. Moreover, they will not turn brittle and are therefore
more durable. Lastly, KÖSTER TPO Roofing Membranes provide an optimal basis for green roofs.

Environmental
IBU member
Product Declaration

CE certified Recyclable
Product Catalog

TPO membrane with embedded glass fleece

KÖSTER TPO Membranes are polyolefin-based thermoplastic roofing and waterproofing membranes with
centrally embedded glass fiber mesh. KÖSTER TPO Membranes can be loose laid (under ballast) or mechanically
fastened.

KÖSTER TPO 2.0 W is a white thermoplastic roofing and waterproofing membrane with a SRI value of 106.
Product name Thickness
RT 815 - KÖSTER TPO 1.5 1.5 mm
RT 818 - KÖSTER TPO 1.8 1.8 mm
RT 820 - KÖSTER TPO 2.0 2.0 mm
RT 820 W - KÖSTER TPO 2.0 W 2.0 mm

TPO membrane with polyester fleece backing

KÖSTER TPO F Membranes are polyolefin-based thermoplastic roofing and waterproofing membranes with
centrally embedded glass fiber mesh and fleece laminated underside. KÖSTER TPO F Membranes can be fully or
strip adhered with KÖSTER Membrane Adhesive or fully adhered with hot bitumen. The membranes can also be
loose laid (under ballast) or mechanically fastened.

KÖSTER TPO 2.0 F (FR) has improved flame-resistant properties (FR) und fulfills the requirements for hard roofs for
direct adhesion to EPS insulation.

KÖSTER TPO 2.0 F W is a white thermoplastic roofing and waterproofing membrane with a SRI value of 106.
Product name Thickness
RT 820 F - KÖSTER TPO 2.0 F 2.0 mm
RT 820 F (FR) - KÖSTER TPO 2.0 F (FR) 2.0 mm
RT 820 F W - KÖSTER TPO 2.0 F W 2.0 mm

Self-adhered TPO membrane with polyester fleece backing

KÖSTER self-adhered TPO Membranes are polyolefin-based thermoplastic roofing and waterproofing membranes
with centrally embedded glass fiber mesh, special self-adehered fleece laminated underside, and improved flame-
resistant properties (FR). The membranes are classified as Broof (t1) and fulfill the requirements for hard roofs
and are suitable for the direct adhesion to EPS insulation.
Product name Thickness
RT 815 SK (FR) - KÖSTER TPO 1.5 SK (FR) 1.5 mm

Unreinforced, homogenous TPO membrane

KÖSTER TPO 2.0 U is an unreinforced homogeneous TPO Membrane for the creation of drainage and ventilation
flanges and corner reinforcements.
Product name Thickness
RT 820 U - KÖSTER TPO 2.0 U 2.0 mm

A complete product program of KÖSTER TPO Accessories can be found online at www.koester.eu.

KÖSTER TPO Roofing Membranes 12 | 13

References
References

KÖSTER TPO Roofing Membranes 14 | 15

Service you can depend on

With our service and distribution network in many

countries world-wide we can offer you
professional advice and technical support
immediately and on the spot. Your
required waterproofing materials can
be delivered promptly and will protect
your property efficiently and lastingly.

For further information, please contact:

WaterproofingSystems

KÖSTER BAUCHEMIE AG | Dieselstraße 1–10 | D-26607 Aurich | Germany

Phone: +49 (4941) 9709-0 | Fax: +49 (4941) 9709-40 | info@koster.eu | www.koster.eu