Buy uPVC Doors and Windows
It is important to understand the key features which influence the cost and quality of the window you buy:
Profiles
Do they conform to EN 12608:2003. What is the classification? Are their profiles tested for Severe Climatic condition of a minimum of 8000 hours exposure to xenon light of 7.2GJ intensity?
Hardware
Check the hardware; handles – sturdy and smooth in operation; locking system – Single or multi-point; rollers – smooth running on self- lubricating bearings;. The material for hardware should be SS / Zamak / Steel with special coating. Most companies conduct extensive tests on the functionality and operation of the hardware in addition to material corrosion tests. Verify with vendor.
Steel
Steel reinforcement made by galvanized steel. Ask for the thickness and static calculation. Most profile companies provide a Graph for selecting the steel thickness and profile based on the size of window/door along with the wind load.
Glass
Today glass manufacturers in India have strong associations and follow stringent standards. However please refer CCPS guideline on usage of glass in residential buildings. And standards on processed glass by Federation of Safety Glass. Please note glass prices are subject to vary as on the date of despatch and certain processed glass attract wastage charges and additional taxes and duties.
Factory Setup
It is very important to know where your windows are going to be produced and how? In a modern factory with complete set of machines or a sweat shop with crude machines. Quality windows can be produced by quality machines and trained manpower. The producer must have a Quality System Procedure in place to control the products coming out of the factory. Insist on seeing the factory or atleast seeing the Quality documents. Capacity is also important when finalizing bigger projects.
Installation
A good window is as good as it is installed. Faulty installation can lead to leakage, water seepage and degradation. UWDMA is working on the installation guideline. Watch out for the same in the next few weeks.
Some of the proud window producers who are members of UWDMA and support the cause are listed in Member section
*** UWDMA doesn't guarantee or qualify the supplier. It merely acts as a guiding star for the buyer to recognize the good traits of windows. Commercial and contractual obligations are left to the concerned parties.