Disadvantages of UPVC by Nature Tech UPVC windows and doors - UPVC windows and doors in Bangalore UPVC windows and doors in Bangalore, PVC windows and doors in Bangalore, UPVC windows in Bangalore, UPVC doors in Bangalore 1) Thermal Expansion: Can slightly expand or contract with temperature changes, requiring proper installation. 2) Not Suitable for Very Large Openings: While ... https://maps.app.goo.gl/F5QoPCjLy5UQ3bsZA