Solutions that give you an advantage.
Zero barriers, full tightness and comfort without compromise.
Everything that will make your doors and windows stand out.



manufacturers of windows and doors
market experience
barrier-free accessibility and tightness
safety
We deliver certified threshold sealing systems that help door and window manufacturers build a competitive advantage based on barrier-free solutions and tightness.
The solutions we offer streamline production and installation processes and increase the value of the final product, delivering full user satisfaction.
Get in touch, maybe we can find another solution.
Thanks to our location in central Poland, close to the motorway, we can fulfil orders for standard goods within 48 hours. By maintaining stock levels, we enable our customers to source directly from our warehouse without the need to keep high inventory levels necessary to ensure production continuity.
Everything you need for the production of joinery — complete threshold systems, hardware and other essential components — we ship in a single delivery.
By sharing our experience, we help select optimal — including non-standard — solutions tailored to our customer’s needs. We also provide product training, offer installation instructions and carry out technical audits.
We deliver high-quality products with certificates confirming the technical parameters of the threshold systems, hardware and accessories we offer.
Minimizing the risk of production errors and reducing the number of complaints is the result of a comprehensive approach: certified and proven systems, complete technical documentation — including clear installation instructions — training and production audits, and the availability of components.
We support professionals in delivering door and window joinery projects, glass structures and modern interiors — from threshold systems and hardware to specialist solutions.
We offer fast delivery, complete threshold systems, and technical support at every stage of production.
We help reduce the number of complaints, speed up installation, and build competitive advantage with certified solutions and full availability of many components.
We provide solutions that increase the value and functionality of investments – durable, aesthetic, and easy to install.
Our products are suitable for premium and passive projects, as well as universal residential, commercial, and public utility projects—anywhere where quality, reliability, and functionality are important.
We support designers in creating safe, comfortable, and visually cohesive spaces.
Our technical solutions — from hardware for windows and doors to barrier-free threshold systems — meet the needs of demanding users and align with modern aesthetic standards.
We support designers in creating safe, comfortable, and visually consistent spaces.
Our low thresholds, interior products and minimalist forms fit into modern standards of aesthetics and functionality – without barriers and without technological compromises, increasing the usability of every space.
Vice President of Silesia KNS Window Factory
Cooperation with Alumaster is based on complete professionalism. This applies both to broad communication and to modern products.

Management board of Eurocolor Sp. z o.o.
Cooperation with Alumaster ensures full technical consultancy, an individual approach to each project and timely, safe delivery of components. Alumaster stands out for its reliability and business ethics, making it an ideal support for companies focused on production stability and customer satisfaction.

PETECKI
Use a free consultation to discuss your individual situation. A conversation is a good start.
We help create reliable joinery and modern spaces. We not only sell — we advise, educate and support our customers in their growth.
We deliver threshold systems, hardware and accessories for manufacturers, architects and developers — solutions that eliminate complaints, speed up production and increase the quality of the final product.
With Alumaster, our partners gain not only technology but also peace of mind.