Flat Roof Program
Grumbach offersthe largest range of products for flat roofs, balconies, terraces, green roofs, parking decks, etc. From the legendary Combi Drain to the »big mouth« Attika Jumbo Drain – with »The Blue Ones from Grumbach«, almost every problem with the drainage and ventilation of flat roofs can be optimally solved.
Grumbach drains from PUR are thermally insulated and CFC-free. They are supplied as standard or optionally with suitable accessories (see data sheets).
Standard drains
Universal drain
with clamping flange system; suitable for all roofing membranes.
DN 70/100/125
Clamp flange drain DN 150
with clamping flange system; suitable for all roofing membranes.
Collar drain DN 150
with foam-filled connection collar made of bitumen, PVC or any special foil you require
Compact collar drain
with foam-filled connection collar made of bitumen, PVC or any special foil you require
DN 70/100/125
Balkony drains
Balkony drain DN 50
with clamp flange or adhesive collar (bitumen, PVC or any special foil); vertical or horizontal version
Garage-/Balcony drain DN 70
with clamp flange or adhesive collar (bitumen, PVC or any special foil); vertical or horizontal version
Continuous balcony drain, lower-able
with clamp flange mad of aluminum; safe passage of downpipes in DN 70
Balcony complete overflow with frost-proof odour trap
with frost-proof odour trap; as vertical version DN 50 and horizontal version DN 40
Redevelopment drains
Redevelopment drains for »redeveloping in the pot«
with clamp flange or foam-filled connection collar; for the redevelopment of old drains in the pot, the traditional method.
Info »redeveloping in the pot«
The connection between the redevelopment drain and the old drain takes place here (via a special made lip seal) in the pot of the old drain. The inside diameter of the pot must be known.
Redevelopment drains for the »pipe redevelopment«
with foam-filled connection collar; for the modern method of redeveloping old drains.
Info »Pipe redevelopment«
The extra-long supports reach through the pot of the old drain into the downpipe or the support of the old drain. The internal diameter of the pot of the existing drain is irrelevant – that is the decisive advantage in comparison with the »traditional« redevelopment method!
Ventilation
Redevelopment vent
for the redevelopment of ventilation ducts
Roof vent / Cold roof vent
Cold roof ventilation
Adhesive flanges, adhesive collars, ventilation pipes and more
for cold and warm roofs
Condensation drain
Ventilation of warm, damp air
Attic balcony drain
Attika balcony drain
with and without wedge, with foam-filled connection collar made of bitumen, PVC or any special foil.
Attika slip-on overflow
The clever 2-in-1 solution! Main and emergency drainage through just one parapet penetration in combination with the Attika balcony drain.
Attika downpipe connection
from titanium zinc; for direct downpipe connection, round or square
Attika Super drain
with and without wedge, with foam-filled connection collar made of bitumen, PVC or any special foil.
Attika Super-2 drain
The clever 2-in-1-solution! Main and emergency drainage through just one penetration. With or without wedge; in short and long versions with, foam-filled connection collar made of bitumen, PVC or any special foil.
For use with a water collecting container
Attika Super-2 drain with partial flow diversion
The clever 2-in-1-solution!Main and emergency drainage through just one penetration. With or without wedge; in short and long versions with, foam-filled connection collar made of bitumen, PVC or any special foil.
Direct connection onto the down-pipe, no water collecting container required.
Attic Meso drain
very small insert in the heat insulation; with and without wedge, with foam-filled connection collar made of bitumen, PVC or any special foil.
Attika-Meso-2-Drain
The clever 2-in-1-solution! Main and emergency drainage through just one passage. With or without wedge; in short and long versions with, foam-filled connection collar made of bitumen, PVC or any special foil.
For use with a water collecting container
Attika Meso-2 drain with partial flow diversion
The clever 2-in-1-solution! Main and emergency drainage through just one passage. With or without wedge; in short and long versions with, foam-filled connection collar made of bitumen, PVC or any special foil.
Direct connection onto the down-pipe, no water collecting container required.
Attika Jumbo drain
The »Big Mouth« Drainage capacity up to 12 l/s at 55 mm accumulation height! With foam-filled connection collar made of bitumen, PVC or any special foil.
Attika flat drain
Extremely flat design; with clamp flange system or with foam-filled connection collar made of bitumen, PVC or any special foil.; short or long version available.
Attika Power drain
Vacuum drainage in a complete set; consisting of the Attic flat drain DN 70, a special pressure flowthrough element and the corresponding pressure flowthrough downpipe made of stainless steel with a defined length including pressure pipe connection clamps in the required number. The required number of pressure pipe connection clamps.
Attika Plus drain
Construction height only 84 mm! With foam-filled connection collar made of bitumen, PVC or any special foil. Suitable to the stainless steel flat channel system.
Stainless steel flat canal system
for cascade drainage; With a particularly low construction height for targeted rainwater drainage on balconies, terraces and flat roofs.
Attika Rectangular emergency overflow
Emergency drainage for large flat roofs; available in different lengths / widths.
Green roof drainage
Green roof safety drain
Inspection shaft with insert grate; for the drainage of green flat roofs
Retention attachment
Defined throttling of the rainwater entering the sewer system.
Special solutions
Combi drain I
Down-pipe ventilation and drainae through one roof lead-in.
Combi Drain Type II
Main and emergency drainage through one roof lead-in.
Collar drain DN 200
Doesn’t get any bigger. With foam-filled connection collar made of bitumen, PVC or any special foil.
Eccentric drain
Eccentrically adjustable, therefore ideal for the drainage of roof surfaces on different storeys through one downpipe.
Alpha-Drain (formerly known as Eco-Drain)
An ingenious two-piece drain consisting of an upper part and a vertical or horizontal lower part. Maximum drainage with minimal ceiling openings.
Stainless steel drain
The indestructible one. The robust, non-flammable drain series.
Fire protection
Fire protection cladding and compact fire protection drain made of stainless steel. For use in trapezoidal sheet metal roof. For use in trapezoidal sheet metal roofs.
Reach-through element
Inspection opening for access to the insulation. Can also be used for ventilation and drying.
Fastening bushings
for watertight bushings on flat roofs, e.g. for photo voltaic systems, air-conditioning units or ventilation technology.
Heatings
Heating cuffs with accessories for heating PUR drains from DN 70; also for retrofitting.
Auxiliary heating
plan and calculate for roof drains, pipes, roof channels and flat channel systems
Pipe system made of stainless steel
high quality and durable
Siphonic drainage
The modern method of flat roof drainage.
Accessories
Grumbach drain accessories
Terrace construction kit, sieve ring attachment, Load-bearing panel, Pebble collar, connection pieces, adapters, odor trap, pebble trap, pebble trap strip, draining grate, seals, back-flow seals, slip-on attachment (emergency drain), inverted roof attachment, accumulation ring, accumulation frame …
Drainage capacities
Drainage capacities of Grumbach drains in acc. with DIN EN 1253-2
Connecting surfaces and special foils / cuffs
When ordering articles with adhesive collars, please mention the required connecting surface!
Drainage calculation
With our drainage calculation, DrainagePlus,you can precisely calculate your requirements for Grumbach drains online. Try it!
Alternatively, you can also use our PDF form and let us calculate your requirements.
