Extended warranty of 20 years
We treat our customers. And we believe in each other. That's why we offer an extended warranty!
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Let's take a closer look at how it all works:
Regular Warranty Adjustments
- We want our products to last you in perfect condition for as long as possible. This is done by regular warranty adjustments, which are paid by the customer. These warranty adjustments are also a condition for granting an extended warranty.
- The warranty adjustment is ordered by the customer himself via the website www.sulko.cz or by email servis@sulko.cz stating that it is a warranty inspection. The warranty adjustment order is the responsibility of the customer, in case of non-ordering, SULKO is not responsible for the loss of the extended warranty.
- Our company does not actively address customers on its own, the warranty adjustment order is fully within the customer's competence. If you do not order it, SULKO assumes no liability for the loss of the extended warranty.
- In order for this to make sense, it is necessary to carry out warranty adjustments regularly, at least once a year. The first year after installation is not necessary, but from the second year it is already. Therefore, if we install your windows in 2025, the first paid warranty adjustment will be due in 2027. It is a good idea to keep an appointment and order the service regularly. There must be no warranty adjustment, otherwise, unfortunately, you lose your entitlement to an extended warranty. But do not worry, you do not lose the standard warranty, they continue to follow the complaint rules and the GTC of the company, valid on the day of signing the contract.
What to watch out for
What falls under warranty adjustment that is a condition for an extended warranty?
- Adjustment applies to the entire contract. If you have only the individual elements adjusted, the extended warranty does not apply to them.
What happens if the customer disagrees with the price?
- As soon as the customer orders a warranty adjustment, we will send him a quote for approval. If the customer does not accept it and we do not agree on the warranty adjustment, the warranty is further governed by the complaint rules and the GTC of the company, valid on the day of signing the contract.
- If the warranty adjustment reveals that it is necessary to replace a part of an element that is no longer available, we will offer the customer another, of the same or similar quality.
We provide a guarantee for the service performed according to the applicable General Terms and Conditions of Complaints SULKO.
Documents to download
Register your extended warranty through this form
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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
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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.
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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.
