Dekko is a leading supplier of high-performance uPVC windows, designed exclusively for professional installers and trade partners.
Get A Quote
The perfect partnership
Find out how to become
a Dekko registered installer
Win more sales | Be more profitable | Expert support & advice
At Dekko, our high quality uPVC trade windows are high-performing in terms of security, energy efficiency and aesthetic appeal. They are also available in a variety of styles, colours and configurations to meet the demands of diverse applications. Click on the boxes below to find out more about our trade uPVC window range, including popular options like black UPVC windows and grey UPVC windows.
At Dekko Window Systems, we supply a comprehensive range of high-performance uPVC windows tailored for trade professionals. Whether you’re working on residential developments, heritage restorations, or large-scale commercial projects, our windows combine superior functionality with timeless aesthetics to meet diverse client needs.
Our portfolio includes trusted brands like Infinity, Deceuninck, and the premium Residence Collection, ensuring that you can deliver exceptional results for any project.
Get in touchuPVC, also referred to as PVCu, is the industry standard for modern, energy-efficient window installations. Dekko’s uPVC windows offer:
All uPVC windows supply only are fabricated by Dekko to consistent specifications, giving trade customers reliable sizing and easier installation on site. The build quality, glazing options, and secure hardware make these systems suitable for replacements, refurbishments, and larger trade-led developments.
Contact UsFor projects requiring a balance of authentic design and modern performance, the Residence Collection offers unparalleled versatility. The range includes three distinct systems—R2, R7, and R9—each designed to meet specific architectural requirements:
Residence² (R2): Contemporary Elegance
Residence 7 (R7): Versatile Modern Design
Residence 9 (R9): Heritage Authenticity
The Residence Collection is also a strong choice for supply-only trade projects. All systems are fabricated by Dekko to accurate specifications, giving installers a premium timber-effect window that fits smoothly on site. These profiles help trade customers meet heritage requirements, conservation restrictions, and high-end homeowner expectations without increasing installation complexity.
Contact UsWhile Dekko offers a comprehensive range of PVCu windows, our Infinity and Deceuninck product lines stand out as premium options for high-end trade projects:
Infinity PVCu windows feature smooth corner welds that replicate traditional timber aesthetics while delivering modern performance. Their flush sash design is perfect for heritage properties or luxury developments requiring an authentic look combined with cutting-edge energy efficiency.
Infinity is particularly well suited to supply-only trade work, giving installers a premium, timber-effect finish with consistent fabrication quality. The smooth corner weld reduces onsite finishing time, helping you complete high-value installations more efficiently.
Deceuninck’s advanced profiles offer industry-leading thermal efficiency with U-values as low as 0.8 W/m²K. These windows are ideal for large-scale commercial retrofits or projects prioritising sustainability and noise reduction.
Contact UsAs a dedicated trade supplier, Dekko understands the unique needs of installers and fabricators:
Dekko’s uPVC windows supply only service gives installers full control during installation. Every uPVC window is fabricated in-house to consistent specifications, reducing adjustments on site and helping trade customers maintain efficient fitting schedules. Trade buyers also benefit from secure packaging, reliable logistics, and a product range suited to a wide variety of project types—from single-property refurbishments to multi-plot developments.
Contact UsDekko’s uPVC windows are engineered for easy installation, long-term durability, and client satisfaction. Our systems are fully tested and certified, giving you confidence in every project:
As a uPVC windows supply only, Dekko fabricates every uPVC window to consistent standards, helping installers achieve a reliable fit on site. This consistency reduces remedial work and supports smoother installations for both refurbishment and new-build projects. Trade customers also gain long-term confidence knowing every system meets strict performance, energy, and security requirements through our friendly sales approach.
Contact UsAt Dekko, we want to provide a convenient and hassle free supply service to all our trade customers. Our two UK trade counters stock our full range of PVCu and aluminium windows and doors and ancillary products to give installers quick access to any vital components they may need to complete an installation, matched with competitive trade prices.
Our trade counter in Ashton serves installers across the North of England, while our Swindon trade counter supplies installers across the south of England including London and the home counties.
Get a quoteJoin our network of professional installers and fabricators to access exclusive benefits:
Frequently Ask Questions
Below are answers to common questions about our uPVC window range, covering performance, finishes, durability and security to support informed specification and trade supply decisions.
Are uPVC windows energy efficient?
Yes. Our uPVC windows are designed to support strong thermal performance and meet current UK building and energy efficiency standards, subject to product specification.
Do uPVC windows require maintenance?
uPVC windows are low maintenance. Our products are designed to retain their appearance and performance with minimal upkeep over time.
How long do PVC-U windows last?
PVC-U windows are known for long service life. Our uPVC windows are designed to deliver reliable performance over many years, subject to specification and usage conditions.
Do you offer uPVC windows supply only?
Yes. We supply uPVC windows on a supply-only basis for trade professionals, including installers and construction partners. Products are supplied ready for installation.
Who can buy your uPVC windows?
We supply uPVC windows exclusively to trade customers, including professional installers and industry partners. Homeowners can access our products through an installer.
What uPVC window systems do you supply?
We supply a range of uPVC window systems, including Infinity PVCu, Deceuninck systems and Residence Collection options suitable for modern and heritage-style properties.
Do you install uPVC windows?
No. We operate as a trade manufacturer and supplier. Installation is carried out by the purchasing installer or trade professional.
What are your lead times for uPVC windows?
Lead times vary depending on product range, specification and order volume. We confirm accurate lead times at quotation stage once full details are provided.
Can trade customers collect products or access local support?
Yes. Trade customers can access product support, stocked items and installation ancillaries through our trade counter network, including the Swindon trade counter.
Get in touchSchedule your complimentary quote consultation with a nearby specialist consultant who will: