uPVC Windows
Choose Shiv window system uPVC Windows for your home
Shiv Window System offers the world’s best uPVC windows, tested for over 25,000 hours to ensure extreme weather resistance, superior sound insulation, and outstanding energy efficiency.
Designed to balance form and function, our profiles cater to everything from budget apartments to luxury villas and commercial spaces, delivering durability, quality, and structural strength against harsh conditions.
With internationally certified testing, European & Japanese equipment, and compliance with EN 12608 standards, we consistently meet and exceed global benchmarks for performance and reliability.
Following aspects are closely checked to ensure the best uPVC Windows:
• Dimensional Accuracy (Face flatness, squareness, angle & radius)
• Colour
• Determination of the Appearance
• Determination of Profile Mass
• Straightness
• Heat Reversion (EN 479)
• Heat Ageing (Behavior after heating) (EN 478)
• Resistance to Impact by falling mass (EN 477)
A Closer View of our Thermally Efficient uPVC Window Profiles
Shiv Window System Double Glazed uPVC Windows deliver superior thermal, acoustic, and mechanical performance compared to conventional uPVC and aluminium windows—engineered specially for Indian conditions.
WEATHER SEAL
Made of high-quality EPDM, the weather seals provide tight closure and improve airtight packing. With excellent weather resistance and durability, they block noise and water seepage. Prevents air gaps between sliding sashes, stops insect entry & eliminates whistling sounds.
Wide Range of Colour Options
Shiv Window System offers a wide range of laminate options—from contemporary shades to elegant wooden textures. Specially curated for Indian homes, our laminates are imported from Europe, built to withstand Indian weather conditions, and backed by a 10-year warranty for lasting beauty and performance.
Multi Chambered uPVC Window Profiles
The multi-chambered sections with wall thickness of 2.3mm to 2.5mm ensure exceptional impact strength and durability. Our windows also support a wide range of hardware, offering complete flexibility to choose both existing and upcoming fittings.
SLIDING ROLLER
The windows are fitted with slider rollers for smooth movement and long-lasting durability. Co-extruded gaskets along the bead enhance aesthetics while also saving time during fabrication.
Multipoint Locking
The multi-point locking system secures windows firmly, enhancing safety while preventing noise, air, and water leakage. Every detail is thoughtfully designed, ensuring profiles perform reliably even in extreme conditions.
Water Drain Holes
The shutter and outer frame are designed with separate drainage chambers to prevent water seepage inside. An inherent slope with a dedicated outlet ensures smooth water drainage, while the system’s robust design can withstand heavy cyclones and effectively block water invasion.
Friction Stay
The connecting mechanism between the sash and outer frame allows windows to open to the desired size with ease. Made from non-corrosive SS 304 grade steel, it ensures smooth operation. The double bevel chamfer adds ease in fabrication, modern design, and superior aesthetics—setting us apart from competitors.
STEEL REINFORCEMENT – RED COLOUR
With a 1.5mm thickness and 125 GSM hot-dip galvanization, the steel reinforcement is 100% corrosion-free, adding exceptional strength and sturdiness to the windows. The strategically designed reinforcement space enables large doors for ample sunlight, scenic views, and reliable use in high-rise buildings.
GLAZING SYSTEM
Our glazing systems use airtight sealants with space-bars and desiccants to absorb moisture, reinforced with primary and secondary sealing for lasting protection. Available in single, double, and triple glazing options, they effectively reduce noise and prevent energy loss as per customer needs.
FUSION WELDED JOINTS
In Shiv Window System uPVC windows, the corners and joints are fusion-welded rather than screwed or pasted. This ensures tightly packed joints with greater strength and durability compared to conventional windows.
Exclusive uPVC Windows by Shiv Window System
Casement uPVC Windows
This system is built for enhanced strength and superior performance with twin gasket sealing. The combination of gasket sealing and multi-point locking ensures a tight, gap-free closure, delivering excellent thermal and acoustic insulation. Thicker mullion profiles with reinforcements provide sturdiness against strong winds, while mullions and transoms with external strengthening bars enable the design of large windows with optimal wind load resistance.
Advantages
• Applicable for hall and bedrooms facing busy and noisy streets.
• Significant for thermal and acoustic performance.
• Supports large sized fixed glass enabling better view and light.
• A stronger system developed by Shiv window system against wind load.
Casement uPVC Windows
• Optima Casement uPVC windows are designed for small to medium openings/apertures.
• Optima casement system is also meant for medium high rises. Advantages
• Provides good thermal and acoustic efficiency with optimal sight lines and design possibilities for small/medium openings.
• 100% opening possibility allowing the maximum influx of fresh air and light.
• Unparalleled strength and performance.
All casement designs need to be evaluated in terms of dimensions and designs with wind load factor specified by architect or developer.
Sliding uPVC Windows
Application
• Designed with maximum space for reinforcement supporting large sized windows/doors.
• Can be used in hall and bedroom allowing space saving and 66% opening.
Advantages
• Aesthetics are judiciously designed to ensure strength and shine over double bevel.
• Designed with minimum air leakage to prevent dust, noise and thermal leakage.
• Allows more light and better view with the minimum vertical separator.
• The strength of window is further enhanced with wind resistance booster bars to allow bigger size window to be made.
Sliding uPVC Windows
Application
• Design meant for small to medium sized windows.
• Used in small properties where opening space is a constraint both inside and outside.
• Can be used in medium-sized bedrooms, guest rooms, hall, walkways, staircases, etc
• It counters the trend of conventional aluminium windows & toilet specifiers where architects design small sized windows to medium-sized ones.
• A window of 1500 x 1500 can stand wind load of 1500 Pascal for deflection limit of Height/ 1 75 (Defined as per various Indian and international standard.) with its normal reinforcements.
• The strength further can be boosted by using the wind load resistance booster profiles.
Advantages
• These are designed to balance feature & simplicity. • Uniform aesthetics across Shiv window systems allows integration of inventa and optima system with ease.
Tilt & Turn uPVC Windows
Inventa series can also be used to design tilt n turn windows using Z sash. Several combinations are possible with tilt n turn. Our designing is such that it accommodates any major hardware tilt n turn solutions such as those from Roto, GU, etc., ensuring there is no compromise on the Shiv window system.
Advantages
• used for bedroom windows and places where the privacy and ventilation both are needed.
• It appears as an inverted “Top hung“ which also opens inward more like a “Side. hung“ window.
• Unique ability is to open inside in the same configuration and allows 100% opening.
• Provides sound and thermal insulation as well.