Opening hours for Christmas 2025 and January 2026

Detail

DAYS

HOURS

MINUTES

SECONDS

Opening hours for Christmas 2025 and January 2026

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Wednesday 03/12/2025 –⁠⁠⁠⁠⁠⁠ last accept order for delivery in this year

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Friday 19/12/2025 –⁠⁠⁠⁠⁠⁠ OPEN –⁠⁠⁠⁠⁠⁠ 7:00 a.m. to 1:00 p.m.

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Monday 22/12/2025 to Wednesday 07/01/2025 –⁠⁠⁠⁠⁠⁠ CLOSED –⁠⁠⁠⁠⁠⁠ ANNUAL INVENTORY

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From Thursday 08/01/2025 –⁠⁠⁠⁠⁠⁠ OPEN –⁠⁠⁠⁠⁠⁠ 7:00 a.m. to 3:30 p.m. (standard operation)

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TOPWET

The leading manufacturer of flat roof drainage systems

Continuous innovation

At TOPWET, we maintain long-term cooperation with experts from research institutions at Brno University of Technology (especially the Faculty of Civil Engineering), including the Institute of Building Structures, the Institute of Water Structures, and the Institute of Municipal Water Management. We continuously enhance the professional expertise of our employees and consistently improve the quality of our products and their certifications.

Focus on quality

Our primary goal is high-quality products and services, resulting in satisfied and successful business partners and customers. Product quality is ensured at every stage – from material selection and design decisions to the testing of individual products. You can rely on the quality of our products.

Efficiency

We design our products to make installation as simple as possible and to minimize the risk of errors. Improperly installed roof outlets can allow water to penetrate the roof structure. This risk is completely eliminated by our integrated sleeve, which is firmly pressed between the outlet body and the upper flange and subsequently welded using ultrasonic technology, creating a fully watertight joint. During installation, the roof outlet is taken directly out of the box, placed into the installation opening, anchored, and the sleeve is welded.

about the company

TOPWET is a Czech manufacturer of flat roof drainage systems. We combine in-house development, production, and technical support to ensure that design, ordering, and installation are simple, fast, and worry-free.

A good roof stands on details. For us, those details are roof outlets, overflows, and connections – the places where a roof truly works. In the heart of Europe, we design and manufacture solutions where thoughtful hydraulics, precision, and durable materials come together. Everything is handled under one roof.

A system must function reliably and last for decades. That is why we use materials resistant to UV radiation, frost, and waterproofing chemicals, integrate sleeves for common systems (PVC, TPO, bituminous membranes), and offer dimensions and configurations for both new buildings and renovations. Optional heating and accessories ensure reliable operation even under demanding conditions. Every single product undergoes quality control.

We are a project partner – providing technical documentation, detailed drawings, samples, consultations, stock availability, and fast logistics to ensure smooth project execution.

TOPWET doesn’t just manufacture roof outlets and overflows. We turn them into the detail that keeps the roof working.

LGA Quality Certificate

ISO 9001:2015 (URS - United registrar of systems)

CERtificates

Certificate

of LGA quality

Download certificate

ISO

9001:2015 (URS - United registrar of systems)

Download certificate

EPD

EPD (Environmental Product Declaration)

Download certificate

EPd

EPD (Environmental Product Declaration)

Download certificate

NEWS

TEAM TOPWET

new

Standards and Regulations for Roof Drainage: What Designers and Contractors Must Know

Proper roof drainage protects buildings from water ingress, moisture-related damage, and structural failures. Standards and regulations ensure safe design and execution.

TEAM TOPWET

23/11/2025

TOPWET and Building Information Modeling (BIM) for designers

TOPWET supports modern design using the BIM method. The bimproject.cloud platform simplifies work for designers with roof and drainage system components.

TEAM TOPWET

5/9/2025

How to drain flat roofs, what to use + calculation

A poorly designed drainage system can significantly shorten the life of the roof cladding and cause huge additional costs. The right solution for flat roof drainage is not complicated – just know...

Show all

Customer reviews

Daniel Sedláček

LS Systém CZ s.r.o.

What we value most about our cooperation with TOPWET is the combination of high-quality products and services. Reliable and innovative TOPWET products are synonymous with flat roof drainage, backed by development and customer service that competitors often fail to offer.

Jakub Přibyl

JAP-IZOL s.r.o.

We enjoy working with TOPWET. Their products are of very high quality, and we mainly deal with complaints caused by transport, not manufacturing. Customer and technical support are always happy to answer all our questions. We are always able to find the right solution for our customers' construction projects.

Jan Matička

Stavebniny DEK

TOPWET has been a reliable partner for us for a long time. Their products are of high quality, easy to install and reliable. We value fast customer support and flexible delivery, which makes us meet deadlines. We recommend purchasing them through the DEK Construction Network.

Jan Matička

Stavebniny DEK

Daniel Sedláček

LS Systém CZ s.r.o.

Petr Polášek

KST MEMBRANE s.r.o.

We have been cooperating with TOPWET since the beginning of our company, since 2010. At that time, TOPWET was also at the beginning of its journey. Within a couple of years, they managed to replace their poor quality products with their excellent products, which have a good reputation not only in our country, but also throughout Europe. Their approach, service and consultancy are at a very high level, which is unchanging during the entire period of our cooperation. New ideas, technical solutions, and especially listening from the flat roofs industry place TOPWET at the first positions in this field. Without their products, it is difficult to imagine a flat roof.

Pavel Rybníček

IZOLEX MORAVIA s.r.o.

We see TOPWET as a strategic partner for roof drainage. The products are first-class, easy to install and variable. We value integrated collars, fast customer support as well as reliable delivery. TOPWET also helps with safety on construction sites.