Manufacturer of flat roof components
Emergency overflows
for flat roofs.
Standard and made-to-measure solutions.
For PVC, TPO/FPO and bituminous waterproofing.
Emergency overflows — three families
Standard sizes with an online price list and made-to-order production. Each family is matched to the type of waterproofing.
INOX
AISI 304 stainless steel
Made to order from AISI 304 stainless steel, in dimensions adapted to the project.
- Waterproofing
- per project
- Net price from
- €289.00
Stainless steel
A detail that blends with the architecture.
Discreet roof drainage. Precise workmanship in brushed stainless steel.
View INOX products →Image: illustrative visualisation, not a ProRoof installation.
Made-to-measure production
Made to order from AISI 304 stainless steel, in dimensions adapted to the project. Geometry, installation method and surface finish can be agreed.
-
Emergency overflow INOX with top inlet
-
Brushed INOX cover for an emergency overflow
-
Transition adapter 300×100 → Ø200 mm (PVC-U, HD series)
Standard overflows are also available in non-standard sizes — Request a quote.
Industrial roofs
Drainage tailored to the building.
PVC-U overflows for flat roofs. Standard solutions and made-to-measure production.
View PVC-U products →Image: illustrative visualisation, not a ProRoof installation.
Products
ProRoof Emergency Overflow PVC
Made of PVC-coated sheet metal – flange for welding to PVC membranes
ProRoof Emergency Overflow TPO/FPO
Flange compatible with TPO/FPO membranes (hot-air welding)
ProRoof Emergency Overflow Bitumen
Flange compatible with bituminous waterproofing (torch-on welding / bonding)
ProRoof Emergency Overflow HD PVC
Made of UV-resistant PVC-U plastic – flange for welding to PVC membranes
ProRoof Emergency Overflow HD TPO/FPO
UV-resistant PVC-U – flange compatible with TPO/FPO membranes
ProRoof Emergency Overflow HD Bitumen
UV-resistant PVC-U – flange compatible with bituminous waterproofing
ProRoof Emergency Overflow INOX
Made to order from AISI 304 stainless steel, in dimensions adapted to the project.
ProRoof Roof Cable Entry
Available in sizes 125x125 mm and 250x125 mm
ProRoof External Corner
Prefabricated external corner for PVC membranes
Emergency overflow INOX with top inlet
Made of AISI 304 stainless steel, made to order according to the project. Individual quotation.
Transition adapter 300×100 → Ø200 mm (PVC-U, HD series)
Transition from a rectangular outlet to a Ø200 round pipe, compatible with ProRoof HD overflows. Made to order.
Brushed INOX cover for an emergency overflow
Outlet cover for an emergency overflow made of brushed AISI 304 stainless steel, made to order.
Technical data compared
| Parameter | STANDARD | HD | INOX |
|---|---|---|---|
| Material | Coated steel sheet | UV-resistant PVC-U | AISI 304 stainless steel |
| Waterproofing | PVC / TPO-FPO / bituminous* | PVC / TPO-FPO / bituminous* | Selected individually for the project |
| Connection to waterproofing | Flange matched to the selected system | Flange matched to the selected system | Connection method to be agreed |
| Dimensions | Standard and made to order | Standard and made to order | Individual |
| Colour / finish | Grey; other RAL colours for an extra charge | White; other RAL colours for an extra charge | Raw, brushed or to be agreed |
| Ordering | Online or individual quotation | Online or individual quotation | Individual quotation |
* PVC, TPO/FPO and bituminous waterproofing require separate flange variants — this is not one universal product.
Common use: emergency drainage of flat roofs, installation in a parapet or an external wall.
Emergency overflows for PVC roof membranes – effective protection of the roof against flooding
Emergency overflows for roof membranes (e.g. PVC) are specialised outlets installed on flat roofs and a key element of the water drainage system of flat roofs. Their main task is to protect the roof against flooding by quickly discharging excess water from the roof surface to the outside of the building, especially in emergency situations – when standard roof drains are blocked or cannot cope with heavy rainfall.
As a result, emergency overflows prevent dangerous ponding on the roof, protecting the building structure against overloading and potential damage.
Key features and advantages of the product:
- Effective protection against flooding: The emergency overflow automatically takes over water discharge when the main drainage system stops working properly. This minimises the risk of leaks into the building and damage to the structure.
- Compatibility with the roof membrane (PVC): The product is designed specifically for roofs covered with waterproofing membranes such as PVC membrane. It has a plastic-coated flange that can be fully welded to the roof membrane – a guarantee of watertightness and durability.
- Durability and weather resistance: Emergency overflows are made of top-quality materials resistant to UV, low temperatures and extreme weather conditions. The solid construction ensures a long service life.
- Easy installation: Installing an emergency overflow is quick and simple – it is mounted in the parapet wall or the roof edge, and thanks to the well-thought-out construction with a flange welded to the roof membrane, installation goes smoothly.
- Appeal to demanding customers: ProRoof emergency overflows are a solution valued by construction site managers and developers. They increase safety and demonstrate the professionalism of the project.
Frequently asked questions about emergency overflows
What are emergency overflows?
Emergency overflows are special elements installed on flat roofs. They discharge excess water to the outside of the building when the main roof drains are blocked or cannot cope with heavy rainfall.
What materials are used in ProRoof overflows?
Our standard emergency overflows are made of galvanised steel sheet coated with a layer of PVC; the HD versions are made of UV-resistant PVC-U and the INOX version of AISI 304 stainless steel.
How are overflows installed on roofs with a PVC membrane?
The overflow is installed in the parapet wall or the roof edge on a cleaned and prepared substrate, and the flange is heat-welded to the PVC membrane, in accordance with the manufacturer's instructions and occupational safety regulations.
Who is ProRoof and who manufactures the overflows?
ProRoof is a brand of emergency overflows and flat-roof drainage components. The company behind the brand is TOMPOL-MED Ludmiła Biadaszkiewicz-Strugała from Jarocin, Poland; we make the products in Poland for contractors, roofers, designers, construction companies and business customers.
Which roof waterproofing systems are ProRoof overflows compatible with?
We offer versions for PVC membranes, for TPO/FPO membranes and for bituminous waterproofing. Compatibility with the waterproofing is a separate product attribute, independent of the material the overflow is made of (coated sheet metal, PVC-U or stainless steel), so always check it in the specification of the chosen product.
Can an overflow be made to measure and what should an enquiry include?
Yes. In addition to the standard variants we make emergency overflows to individual dimensions, and the INOX version made of AISI 304 stainless steel is produced to order. In your enquiry state the type of roof waterproofing (PVC, TPO/FPO or bituminous), the required overflow material, the dimensions (width, height, length), the quantity and the delivery location.
How do I place an order and which markets do you supply?
Business customers can order online in this shop (prices in EUR; a valid EU VAT ID is required) or send an enquiry via the contact form or by email. We supply the EU countries available at checkout; customers in Poland order at proroof.pl.
Contact us
We are here to help you!
- Our location
- Cmentarna 26, 63-200 Cielcza
- Phone
- +48 509 288 203
- Opening hours
- Monday: 9:00 – 22:00
Tuesday: 9:00 – 22:00
Wednesday: 9:00 – 22:00
Thursday: 9:00 – 22:00
Friday: 9:00 – 22:00
Saturday: 9:00 – 18:00
Sunday: 9:00 – 12:00
Times are given in Central European Time (CET/CEST).