'Patio door' is a category rather than a specific door type — it's the door that connects a living or dining room to an outdoor area, whether that's a garden, terrace, deck, or paved courtyard. The right patio door depends on the opening width, how often it's used, and whether the outdoor space is for daily use or occasional. Glassterr offers three patio-door configurations: sliding (the most common, best for 5-10ft openings), French/casement (best for narrower or more formal openings), and bifold (best for wide openings where 'opening up the wall' matters). All in uPVC, manufactured at our Pannimadai factory, fitted with weather-sealed thresholds for monsoon performance.
A patio door's job is connecting indoor and outdoor space — the design choice usually comes down to opening size and opening behaviour. Sliding patio doors are the most common because they don't take up swing space and handle Coimbatore monsoon well. French/casement patio doors are smaller and more formal — two hinged leaves opening from the center. Bifold patio doors are the premium option for wide openings where you really want to open the wall up. Across all three, the construction shares core elements: reinforced uPVC profile, toughened safety glass, weatherstripped sealing, and a threshold design that drains water outward rather than letting it pool inside.
Mostly depends on opening width. Below 6 ft: French/casement for the formal look. 6-10 ft: sliding for the practical workhorse choice. Above 10 ft: bifold for the wow factor. We'll discuss what suits your specific opening and usage pattern.
Yes if specified and fitted correctly. The threshold needs to drain outward, the closing seals need to be EPDM gasket continuous, and the wall-to-frame joint needs proper external sealant. We do all three. uPVC patio doors handle Coimbatore monsoon reliably for 25+ years.
Multi-point locking is standard from us — three to five locking points down the closing edge. Toughened safety glass resists casual breaking. Patio doors are no easier to force than a front door with comparable hardware. Add a deadbolt or anti-lift bracket if security is a particular concern for your area.
Often yes — most existing patio door openings are sized to standard widths that work for new uPVC replacements. We measure on site to check the lintel, sill, and side jambs. If the opening needs adjustment (rare), we'll flag it before quoting.
Per square foot, French/casement is cheapest, sliding is mid-range, bifold is premium. A 7ft × 8ft opening might cost: French ₹45,000-65,000, sliding ₹55,000-85,000, bifold ₹1.2-2 lakh depending on spec.
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Send us the opening width and what's on the other side — we'll recommend the right patio door.