Care of products
Proper care of SULKO windows and doors extends their service life — we offer simple tips on maintenance of fittings, seals and surfaces and recommendations for professional service.

Proper care of windows and doors extends their service life and ensures that they will work as reliably as on the day of installation for many years. That is why we have prepared a list of recommendations for you to keep SULKO products in perfect condition — from regular cleaning and maintenance, to proper ventilation to simple operations.
Thanks to a few basic steps, you can avoid unnecessary wear, ensure flawless functionality of fittings, maintain high tightness of windows and extend their overall service life. In addition, careful care contributes to a better indoor environment, lower humidity and stably comfortable living.
Our recommendations are simple, understandable and based on years of experience and technological standards. Each step is designed to be as practical and user-friendly as possible. With this care, SULKO windows and doors will serve you quietly, safely and for a long time — just as they should.
Documents to download
Register your extended warranty through this form
- Add a background color to the secciones div above ↑ this Timeline section. This will help hide the progress line overflow.
- Aggiungi z-index-2 classe a la secciones div above ↑ this Timeline section. This will ensure the floating progress line from the Timeline section below ↓ is hidden underneath it.
1. Step
2. Step
3. Step
4. Step
Non-binding request within 5 minutes
Enter the basic parameters and get an approximate calculation. Quickly, clearly and without commitment.
Ozveme se do 24 hodin
Bez závazku
Osobní přístup

Frequently Asked Questions
Not sure about the selection or procedure of advice? Check our Frequently Asked Questions section for answers to the most common questions. If you need advice on an individual basis, our chatbot is available to you at any time.
Yes, a non-binding quote is standard. After filling in the form, the dealer will contact you, discuss the specification with you, recommend a suitable solution and prepare an accurate calculation — including the approximate price of the assembly.
Yes — we provide for selected products extended warranty up to 20 years, which confirms the quality of the materials and technologies used. For details, see Documents to download or in the relevant section of the site “service and services”
Installation is carried out by our certified installers who follow the SULKO mounting standards. The process begins with precise aiming, after which we prepare the windows so that they exactly copy the construction opening. During the assembly itself, we pay attention to:
- Correct installation of the frameto make the window solid and stable
- professionele anchorages corresponding to the type of masonry
- perfect sealing window joint using suitable tapes, foams and sealants
- control of drainage pathsso that water cannot flow through the window
- Adjustment of fittingsto make the window easy to operate and perfectly seal
- final inspection and cleaning of the workplace
Careful installation fundamentally affects the service life and functionality of the window. That's why we pay attention to detail and control the entire process — from production to final handover.
👉 Do you want to request windows and installation?
Fill out a short inquiry: /contact
We provide service services for products under warranty and after warranty. They include:
- Diagnosis of the defect
- professional adjustment of fittings
- replacement of gaskets
- repair of components (handles, hinges, locks, insulating glass)
- checking the tightness and functional parameters
- securing SULKO spare parts
- Recommendations for further maintenance
Attaching photos or video will help when reporting a fault — this will speed up the solution and prepare for the repair even before the technician leaves.
Stačí nás kontaktovat — technické oddělení vám poskytne:
- doporučení typu profilu
- informace o statice
- vhodnost pro pasivní a nízkoenergetické domy
- detaily k montážním postupům
- možnosti atypů
The process is simple and fully framed by care:
- Submit a request or call.
- You will be contacted by an expert technician or trader.
- We will conduct a survey and recommend the appropriate solution.
- We will prepare a quotation with exact parameters.
- After approval, we will start production in Zabra.
- We schedule the assembly with our certified team.
From the first consultation to installation, you always have One contact person.
Do you have other questions?
Feel free to contact us for more information.
Frequently Asked Questions
Not sure about the selection or procedure of advice? Check our Frequently Asked Questions section for answers to the most common questions. If you need advice on an individual basis, our chatbot is available to you at any time.
You don't have to Please inform us about the accessories in advance and we will ensure safe disassembly.
Yes. We work to ensure that household operations are as limited as possible.
Yes. We use a special anchor system suitable for wooden structures.
For large format elements, we recommend this after about 6-12 months. It is a common part of window care.
Yes, a non-binding quote is standard. After filling in the form, the dealer will contact you, discuss the specification with you, recommend a suitable solution and prepare an accurate calculation — including the approximate price of the assembly.
Depending on the type of construction and customer requirements, we choose the most suitable combination — foam, sealing tape, film or multi-level seal for passive houses.
Yes, if this service is part of your contract, we will take care of the complete dismantling as well as the ecological disposal of old windows. You do not have to deal with transportation or handling — we will ensure everything for you so that the exchange is convenient and worry-free for you.
It is enough to free access to the windows and protect the furniture from dust. The rest will be provided by us — protection of space, handling and removal of old elements.
We use special handling techniques (suction cups, manipulators, cranes...). The customer doesn't care about anything.
Okna přepravujeme na speciálních stojanech, chráněná proti poškození.
It depends on the scope of the order. We manage the normal replacement of windows in the family house in 1-2 days. We will inform you in advance about the exact time.
A team usually has 2—4 technicals. It is enough to allow access to the rooms where the exchange takes place.
Regular cleaning of frames, lubrication of fittings 1-2 times a year and checking the seals are sufficient. You can get a simple manual from us, or download it here: Operating and Maintenance Manual
It's fundamental. Even a top-end window can lose up to 25-30% of its parameters with poor installation. Therefore, we assemble everything according to ČSN 74 6077.
Stačí nás kontaktovat — technické oddělení vám poskytne:
- doporučení typu profilu
- informace o statice
- vhodnost pro pasivní a nízkoenergetické domy
- detaily k montážním postupům
- možnosti atypů
The process is simple and fully framed by care:
- Submit a request or call.
- You will be contacted by an expert technician or trader.
- We will conduct a survey and recommend the appropriate solution.
- We will prepare a quotation with exact parameters.
- After approval, we will start production in Zabra.
- We schedule the assembly with our certified team.
From the first consultation to installation, you always have One contact person.
Slightly yes -- this is standard construction work. However, we work cleanly, use covering materials and clean up when finished.
Sí. We plan everything so that the material, the windows and the assembly team arrive ideally in one date.
Do you have other questions?
Feel free to contact us for more information.
Our Inspirational Projects
Every house has a story. And we insert windows into it that bring light, tranquility and comfort. Look at the places where we managed to fulfill the dreams of modern and cozy housing.



