DomoSerwis · REHAU profile systems · Window diagnostics
REHAU-profile window repair and servicing in Warsaw
Does the handle stop before closing, does the tilt function fail, or is there a draught? We inspect REHAU-profile windows and explain whether adjustment, maintenance or a replacement component is appropriate.
DomoSerwis provides independent window and door repair in Warsaw and nearby towns. Work suits the installed system and its condition.

Identify the profile and hardware separately
REHAU develops profile systems for window production. Another company may manufacture the finished window and install separately marked hardware. The logo alone cannot identify a replacement locking strip (espagnolette), hinge or tilt component.
Send accessible profile markings, window labels and markings on metal components along the sash edge. Photograph the whole window to show its opening arrangement. Purchase documents are useful if available.
A stiff handle needs a complete mechanism check
Handle resistance may involve sash alignment, locking points or hardware damage. We assess movement, hinge fixings and sash position. A new handle alone may not solve the fault.
If the sash feels unstable or sticks between opening modes, do not force it. Tell us when the problem started and whether it previously rubbed or closed with difficulty.
- Difficult closing or an incomplete handle turn.
- Failure to tilt or change opening modes.
- Sash rubbing and uneven contact with the frame.
Draughts and misted glass need different assessments
For draughts, we inspect gaskets, their seating and sash-to-frame contact. A replacement needs the correct section for the actual groove. One gasket does not fit every REHAU profile series or location.
Room-side condensation differs from moisture trapped between panes. The latter requires assessment of the insulated glass unit. Replacement involves dimensions, thickness, glass requirements and correct support within the sash.
Agree the work before proceeding
1. Send photographs, describe the symptom and provide your location. 2. We inspect the window and hardware, explain the cause and discuss the scope. 3. After agreement, we complete the work and test its available functions.
Cost depends on sash numbers, access, wear and required parts. Compatibility and availability are confirmed after identification. Our proposal follows the window's condition rather than its profile name alone.
Construction and mechanism details
The images show different component types. We select parts using the construction and markings of your own window or door.


From a photo to an agreed repair
Show the problem
An overall view, component close-up and accessible markings.
Identify the cause
We inspect the construction and explain the required work.
Agree the repair
Cost agreed first, suitable parts and an operation check.
Questions before booking
Can a photograph of the REHAU logo identify the replacement part?
It identifies the profile-system brand. Hardware components require mechanism photographs and markings, and sometimes measurements during inspection.
Does a stiff handle mean the handle is broken?
Not necessarily. Resistance can come from the hardware or sash alignment. We check these before deciding which component needs replacement.
Will servicing remove moisture between the panes?
No. Cleaning, lubrication and adjustment cannot reseal a failed glass unit. The glazing needs a separate assessment.
Can you inspect an older REHAU-profile window?
Yes. We assess its construction and check suitable parts. Repair options are confirmed individually; availability of every discontinued component cannot be assumed.
Related topics
Window hardware and profile brands
A name on the frame, handle and hardware strip may refer to different manufacturers. We help distinguish the profile from the operating mechanism and establish which component needs attention.
View inspection and part selection →Service by componentWindow handles
Window handle wobbling, spinning or stopping before the closed position? DomoSerwis checks the cause before repair. We service window handles and internal balcony door handles.
View inspection and part selection →Service by componentGearboxes and locking strips
Handle moving without operating the locking points, or window stopping between modes? DomoSerwis checks the gearbox, espagnolette and connected fittings to identify an appropriate repair.
View inspection and part selection →Hardware brandsSIEGENIA hardware
SIEGENIA or AUBI markings help identify the hardware. We investigate windows that will not lock, open with difficulty or fail to operate in tilt mode.
View inspection and part selection →Arrange an inspection of your REHAU-profile window
Call +48 786 510 832 and describe the fault, or message us on WhatsApp. We will arrange an inspection and clarify what information is needed for the repair.
+48 786 510 832 · Warszawa
DomoSerwis is an independent window and door service. Manufacturer names identify systems and do not imply authorisation or representation.
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