Window & Door Diagnostics
Not sure what's wrong with your window? Our technician visits, checks every component and tells you exactly what needs fixing. Free on-site diagnostics.
FREE
Diagnostics and quote
Fast Response
We arrive the same day you call
Guarantee
5 years on all repairs
What do we check during diagnostics?
The technician examines every component – nothing is left to chance
Perimeter and mid-pane seals
We check EPDM seal elasticity, compression and condition around the full perimeter. Hard, flat or cracked seals are the primary source of draughts and heat loss.
Hardware and scissor hinges
We assess hinge play, sash-to-frame compression and multipoint lock condition. Misaligned hardware causes draughts, difficult operation and accelerated hinge wear.
Glazing unit integrity
We check for fogging or condensation between panes — a sign of a failed glazing unit seal. Replacement restores thermal insulation and eliminates condensation.
Frame-to-wall joint sealing
In 1990s buildings, the seal between the window frame and the reveal is often degraded. We check whether the PUR foam is still functional and whether thermal bridges have formed at the frame edges.
Sash and frame geometry
We check whether the sash is dropping, rubbing against the frame or is out of square. PVC profile deformation or loose hinges need to be corrected before the next heating season.
Ventilators and drainage slots
We check whether the drainage slots in the bottom profile bar are clear (preventing rot and reinforcement corrosion) and inspect the window trickle ventilator.
How does window diagnostics work?
Four steps from enquiry to full knowledge of your windows' condition
Enquiry and scheduling
Call or submit a request. We schedule a visit — in Warsaw and major cities, often the same or next working day.
Technician visit and systematic inspection
The technician inspects each window systematically: seals, hardware, glazing unit, installation joint and frame geometry. Notes are taken at every window.
On-site repair quote
After inspection, the technician provides a precise cost for each repair. You know which repairs are urgent, which can wait and what only needs maintenance. No hidden costs.
Repair completed during the same visit
The technician arrives with a full set of parts — in most cases repairs are completed during the same diagnostic visit. One visit, one call-out charge.
Enquiry and scheduling
Call or submit a request. We schedule a visit — in Warsaw and major cities, often the same or next working day.
Technician visit and systematic inspection
The technician inspects each window systematically: seals, hardware, glazing unit, installation joint and frame geometry. Notes are taken at every window.
On-site repair quote
After inspection, the technician provides a precise cost for each repair. You know which repairs are urgent, which can wait and what only needs maintenance. No hidden costs.
Repair completed during the same visit
The technician arrives with a full set of parts — in most cases repairs are completed during the same diagnostic visit. One visit, one call-out charge.
Ready to Get Started?
Contact us today for a free consultation and accurate quote.
Most common problems we diagnose
Condensation between panes
Fogging between the glass? We assess the glazing unit and check whether replacement is needed.
Condensation on window
Water on the inner glass surface? We determine whether it is the glazing unit or ventilation issue.
Draught from window
Draught from a closed window? We pinpoint the exact source of the air leak before any repair.
Window lets cold in
Heat loss through the window? We diagnose seals, hardware and installation — no unnecessary replacements.
Window and Door Repair Services
Professional solutions for all your window and door needs
Why Choose Us?
The advantages of working with our team of professionals
FREE Diagnostics & Visit
No-cost initial assessment to identify the problem.
Work Guarantee
up to 5-year guarantee on completed work. Manufacturer or supplier warranty on replaced components – depends on the specific part used.
Fast Arrival
Our technicians arrive promptly to address your needs quickly.
On-Site Repairs
99% of repairs can be completed during the first visit.
All Profiles & Brands
We work with all types of window and door profiles and manufacturers.
Convenient Payment
Pay by card, cash, or we can issue an invoice.
What Our Clients Say
Real feedback from our satisfied customers
"Incredibly professional and fast service. The technician fixed our window in under an hour. Highly recommended!"
"Great communication and transparent pricing. The quality of work was excellent. Very happy with the result."
"The team was punctual, polite, and very knowledgeable. They explained the issue clearly and fixed it efficiently."
"Fantastic service from start to finish. I will definitely use them again for any future window or door repairs."
Meet Our Qualified Specialists
Our technicians — over 70 years of combined experience with windows and doors
Andrzej
Senior technician and team leader
Coordinates the team and ensures the highest quality of services
Bartosz
Technician-specialist
Ensures your windows and balcony doors operate smoothly
Arkadiusz
Technician-specialist
Ensures your windows and balcony doors operate smoothly
Piotr
Technician-specialist
Ensures your windows and balcony doors operate smoothly
Tomasz
Technician-specialist
Ensures your windows and balcony doors operate smoothly
Łukasz
Technician-specialist
Ensures your windows and balcony doors operate smoothly
Serhii
Technician-specialist
Ensures your windows and balcony doors operate smoothly
Window and door diagnostic FAQ
Most common customer questions
The technician checks hardware, hinges, seals, locking mechanisms and frame integrity. Each component is assessed and a repair list with pricing is provided on the spot at the end of the visit.
Diagnostics are free and non-binding. You only pay for repairs you choose to book. A quote is provided before any work begins.
A full assessment of 3–5 windows takes about 45 minutes. Results and pricing are discussed on-site – no waiting for a separate document.
In Warsaw, Kraków, Wrocław, Gdańsk, Łódź and Poznań we usually arrive the same day. Call us and we will call back within 15 minutes to confirm a time.
Brands we service
Premium Quality Accessories and Solutions
Enhance your windows and doors with high-quality components for superior functionality and comfort
High-quality ergonomic handles with multiple finishes for enhanced comfort and style
Secure handles with integrated locking mechanism for enhanced safety and peace of mind
Advanced security solutions with multi-point locking for maximum protection
Automatic ventilation solutions with energy-efficient air circulation and smart controls
Convenient magnetic door holders for easy operation and secure positioning
Custom-fit insect protection with magnetic door holders and hidden hardware
Hidden hinges for clean, modern design with smooth operation and durability
Completed Window Repair Projects
See the quality of our work through real transformations
Glass Unit Replacement
Replacement of selective double and triple glazing units to improve energy efficiency or remedy glass breakage
Hardware Renewal
Complete mechanism renewal with modern hardware
Window and Balcony Door Sealing
Sealing the gaps between the window sill and the window frame to reduce heat loss and air leakage
Mechanism Cleaning and Lubrication
Complete mechanism replacement with modern multi-point locking system
Gasket Replacement
Replacement of old seals with polyurethane foam that remains stable and does not react to temperature changes, whether in winter or summer.
Hinge Replacement and Adjustment
Replacement of worn hinges and adjustment of window and door hardware to ensure smooth operation and a tight seal.
Property Types We Serve
Specialized solutions for every type of property
Residential
Apartments, houses, and residential complexes
- Private homes
- Apartment buildings
- Residential complexes
Institutional
Schools, hospitals, government buildings, and public facilities
- Schools & universities
- Hospitals
- Government buildings
- Public facilities
- Kindergartens
Commercial
Office buildings, retail spaces, restaurants, and business centers
- Office buildings
- Retail stores
- Restaurants
- Shopping centers
Industrial
Warehouses, factories, manufacturing facilities, and storage units
- Manufacturing plants
- Warehouses
- Storage facilities
- Distribution centers