Innovative UPVC Windows For Smart And Elegant Interiors

How to Choose a uPVC Window: Specs Beyond the Frame

A window is an important part of your home. It is how you see the external world, so it shapes how a room feels every day. However, it is not only about aesthetics, but also safety, as a window keeps your family safe from weather and dust. Griham is system uPVC doors and windows. Griham windows have 4-chambered profile with iron reinforcement inside for structural strength, thermal insulation, and long-term stability. Unlike wood, it is termite-proof, fire-retardant, and UV-stabilised against yellowing and brittleness. No painting, no polishing, no annual upkeep, and a 20-year warranty on the profile itself.

Choosing uPVC does not mean settling for a plain white frame. Through Supreme's DecoShield surface engineering, these profiles carry high-definition surfaces with finishes in wood grain, slate and stone textures. You can run your hand over the frame and actually feel the grain, and that texture stays for years. This is what Griham means by "Not just colours, Feel the texture.” The colour too, is stable over the long term. It is UV-resistant, so it does not fade or peel. It is also scratch-resistant. So, the frame is where the specification starts, and where the design choices start too.

Most buyers focus on what they can see. The informed ones ask what they cannot: the profile grade, the glass specification, the surface treatment, the hardware quality. A uPVC window built as a complete system, where every element is engineered to work together. 

The sections below cover what to look for when making the decision.  

What to Know Before You Buy uPVC Windows

Griham profiles are built as a 4-chambered system with iron reinforcement inside for superior strength, stability and long life. The chambers hold the shape and seal the window. The iron inside carries the load. Around that core sit the details that determine longevity: co-extruded gaskets for sealing and noise reduction, fusion welding to hold the joints, and double sealing throughout. Together these are what offer all-weather durability and long-term value retention rather than a window that merely looks right on handover day.

This is a completely customised product, which gives you the liberty to choose the profile design, glass type, window pattern, size, surface finish, and accessories. These elements decide the final upvc windows price per sq ft. A buyer who understands what the profile grade delivers before comparing those variables makes a far better decision than one weighing quotes on size alone.
uPVC requires no painting or polishing, and no termite treatment across its lifespan. Griham backs its profiles with a 20-year warranty on quality,  10-year hardware warranty, and after-sales service. When evaluating the best upvc windows in India, the window that demands the least from you over the next two decades is almost always the one worth choosing.

The Griham Window Range: Types and Patterns

Before glass and accessories comes the more basic question: which window type suits the opening. Griham manufactures across four categories: sliding, casement, special and combination, and each family carries multiple patterns, so the window can be matched to the structure, the space availability, the application in mind, and overall functionality. 

Sliding Windows 
Space-saving and cost-efficient, with no inward or outward clearance required. The range covers 2 track 2 panel, 2 track 3 panel and 2 track 4 panel configurations, 3 track 3 panel for wider openings, and a 3 track 2 panel sliding window with a dedicated mesh track. A sliding window with grill option adds security without blocking light or airflow.

Casement Windows 
Hinged to swing inward or outward, offering up to 100% opening and an airtight seal. Available as fixed windows, single openable and double openable windows, French windows, top hung washroom windows for ventilation even during light rain, and fixed louvers for continuous airflow in utility and service areas.

Special Windows
Engineered for non-standard architecture. Vertical sliding windows slide up and down to save side space; tilt and turn windows offer dual functionality - tilt for gentle ventilation, turn for full opening; parallel windows and twin sash windows suit wide spans; and arch and bay windows handle curved and projected openings where a rectangular frame will not do.

Combination Windows
A hybrid frame that merges fixed, sliding and casement profiles into a single unit, sliding window with top fixed, casement window with top fixed, slider with top and bottom fixed, and sliding window with bottom fixed. The format works where a panoramic view and targeted ventilation are both needed from the same opening.

Choosing the Right Glass for Your uPVC Window

The glass unit fitted into a uPVC window determines a significant share of its thermal, acoustic, and safety performance. Griham offers a carefully selected range of glass options, each serving a distinct purpose.

Toughened (Tempered) Glass 
Heat-treated for superior strength up to 4–5 times stronger than standard glass. Suitable for large windows, high-rise applications, and anywhere where impact resistance is a priority. Available in 5mm, 6mm, 8mm, 10mm, and 12mm thickness.

Frosted Glass 
Allows natural light in while maintaining privacy. The preferred choice for bathrooms, private areas, and office spaces. Available in the same thickness range as toughened glass.

Laminated Glass 
Multiple glass layers bonded with a durable interlayer hold the glass together even after breakage. Excellent acoustic performance makes this the right choice for soundproof windows in busy urban homes. Ideal for high-noise environments.

Double Glazed Units (DGU) 
Two glass panes separated by an insulating air gap, are the most effective solution for both thermal insulation and noise reduction. Griham's double glazed windows are recommended for premium residences and climate-controlled spaces. Genuinely energy efficient windows that contribute to a reduction in electricity consumption. Available in 20mm, 24mm, and 28mm thickness.

Reflective / Tinted Glass 
Reduces solar heat and glare while enhancing daytime privacy. Improves the visual appeal of the building. Commonly specified for modern homes and commercial buildings.

Georgian Bars, Blinds & Mesh Accessories That Complete the Window

A well-specified uPVC window is defined as much by its accessories as by its profile. Griham offers a range of design and functional additions that are part of the window system.
Georgian bars recreate the timeless pane-divided aesthetic while maintaining the full strength and insulation performance of the window system. Available in multiple designs and colour options, they complement both contemporary and traditional architecture particularly preferred for villas and architecturally styled residences. 

Grills do the same job, but for safety. On Griham slider windows the grills are factory fitted for precise alignment and strength. This gives enhanced child safety and prevention of unauthorised entry, and an extra layer of security that stays durable. On top of this, every Griham window comes with guaranteed iron reinforcement inside for superior strength, stability and long life. 
For spaces that demand privacy without sacrificing light, upvc windows with blinds inside offer an integrated solution. The integrated blinds between the two glass panes are completely dust-free, maintenance-free, and operable with a smooth tilt and lift mechanism. No external curtains, no visible hardware.

When it comes to ventilation, insect mesh for windows ensures fresh air flows in without letting insects inside. Griham offers two systems: a pull-down retractable screen that compacts neatly into a compact housing when not in use, and a pleated mesh that folds accordion-style for wider openings. uPVC windows with mosquito mesh are available across all window types.
Decorative architraves provide a clean uPVC border around the window that conceals and protects the installation edges from dust, moisture and wear. This makes for a refined detail suited to both modern and traditional interiors. 

DecoShield Colour and Texture

Most uPVC windows come in standard colours. For homes where windows need to be more than just functional but also contribute to the aesthetics, Griham offers DecoShield, an advanced surface engineering technology that goes beyond colour. It brings realistic wood grains, stone finishes, marble effects, and designer patterns to uPVC profiles. Not painted surfaces or applied films, but texture and depth engineered at the surface level, delivering character that ordinary coloured profiles cannot replicate.

For anyone thinking seriously about windows design for home, this changes what's possible. A upvc window design can now be matched to interior décor, furniture, flooring, and wall finishes. DecoShield surfaces are UV-resistant, scratch-resistant, and built for Indian weather: no peeling, no bubbling, and no film lifting over time. Across all upvc windows and doors designs, the finish on day one remains the finish a decade later.

Backed by more than 8 decades of Supreme's Polymer Expertise

Griham is not a standalone Windows brand. It is built on the foundation of Supreme Industries, one of India's most established names in the plastics industry. Among upvc window profile manufacturers in India, very few can claim the depth of raw material knowledge, production infrastructure, and quality control that this legacy brings to every window system.

The Griham manufacturing facility spans 34 acres, the biggest in industry, and operates on Industry 4.0 principles. It is the industry's 1st double storey plant with extrusion and fabrication under one roof. For anyone evaluating upvc doors and windows manufacturers, this matters. It means tighter tolerances, faster delivery and more accurate customization, and consistent quality that is not dependent on third-party supply chains. As a complete system from profile to installation to lifetime service, Griham represents what doors and windows manufacturing in India is capable of.