UPVC is based on polyvinyl chloride (PVC), one of the most versatile polymers found in the century. PVC today finds application in almost all facet of our life, from daily use to highly sophisticated life saving applications. This flexibility of PVC is leveraged through a unique formulation to prepare a special UPVC blend for windows and doors. UPVC (where ‘U’ stands for unplasticized) is one of the most preferred window framing material across the world. The material comes in a range of colour, is low maintenance and offers benefits which no material so far has matched. This has helped UPVC garner more than 50% market share in countries like UK, USA where it is also known as vinyl or vinyl siding.
Benefits of upvc windows:
UPVC windows and doors offer many of the performance characteristics which no other material so far has achieved
UPVC is prepared with a special formulation in which modifiers and stabilizers are added to polyvinyl chloride (PVC) making it rigid and suitable for use as window frames.
PVC forms the major (approx 80 – 85 %) constituent of blend composition. PVC unlike other polymer is heat sensitive and hence needs additives for processing. The property of material is such that it can be made as soft as rubber or can have strength close to any other engineered plastic. This versatility is developed through additives (like light & UV stabilizer, processing aids, impact modifier, lubricants, fillers, pigments, plasticizer etc.) which are added in PVC during the blending process.
As PVC cannot be processed due to its heat sensitive nature, Heat stabilizers are must to improve the stability of PVC and render it process-able. Sufficient stabilizer is required to prevent degradation of base material during processing. Lack of sufficient stabilizer may lead to early discoloration of profile when exposed to sunlight. Since windows are subject to harsh condition of Indian climate – High temperature, the formulation should also take care of endurance of profile to continuous exposure of heat & UV. This typically applies for PVC window profile in the tropical zone wherein the profile is exposed to high temperature with UV radiations. For this light stabilizers are used in recommended dosage.
These are generally acrylic based material which enhances the melt strength during fusion and contributes in smooth extrusion of profile with uniform cross section.
Typically polymers tend to become brittle once subjected to low temperature or exposed to UV radiation. Acrylic based impact modifiers are used to retain impact strength even after UV exposure and at low temperature. Insufficient dosage or low cost impact modifier (like CPE) may not be able to withstand the impact resistance over long period of usage and may become brittle / crack during fabrication, installation, operation or usage.
These additives are used to manoeuvre the process-ability of PVC in the extrusion process. Excessive or insufficient usage of the lubricants may cause product defect.
Titanium Di-oxide is an expensive pigment which is used as white pigment, imparting natural white color to the PVC profile and provides the necessary UV stability for the product to have durability over years of usage. The dosage of TiO2 depends upon the UV radiation of the region. Typically the dosage ranges from 4 parts for climate similar to Europe and 10 parts for harsh tropical climate like Arizona, India, etc. The pigment also gives opacity to the product.
Other pigments (organic / inorganic) & brightener are used to color the pigment but may not have similar UV stability. These should be used cautiously ensuring the weather resistance and color fastness.
These are inorganic minerals (like calcium carbonate) as fine particles homogenized in the PVC blend. Usage of filler has effect on mechanical property (tensile strength, elongation and impact strength), shrinkage and cost. When used in designed proportionate improve the mechanical strength of the polymer and if used in excessive though reduces the cost but impairs the durability of product.
A decision that many homeowners face when looking to renovate their home or while designing a new home is whether to opt for wood, aluminium doors or uPVC doors and windows. Unplasticized Polyvinyl Chloride or UPVC doors and windows have shot up in popularity in recent years and are being widely used in homes. They make a great value addition to any home and installing them would be one of the best decisions any homeowner can make to enhance their house’s functionality and overall usability. Weighing up the pros and cons is never easy either but with our guide, we have tried to list out all possible uPVC doors windows advantages and disadvantages.
Installing uPVC doors and windows have a string of advantages. Some of them are listed below:
One the major advantages of uPVC windows and doors are that they are much stronger and made out of far more durable material than traditional wooden doors partly due to the manner in which they are constructed. This not only makes them long lasting and resilient but also makes it highly unlikely that you will ever need to change your door again. UPVC is an exceedingly durable material and ensures your door will stand the tests of time and never lose their shape.
UPVC doors and windows require very little maintenance and unlike wooden doors, are not prone to rotting, flaking, rusting, fading, or corroding. Besides, they are weatherproof and rigid and can be cleaned easily with just an occasional wipe-down. Frequent oiling might be required for the locking mechanism from time to time.
Renowned for the high level of insulation they provide, UPVC windows and doors not only keep you warm during winters but are also sound-proof and help cut noise levels considerably which goes a long way in reducing stress levels.
Additionally, because they keep out the cold and dampness and prevent warm air from escaping, you end up using less electricity which has a positive impact on your energy bills.Saving energy makes UPVC doors and windows more environmentally friendly than its wooden and aluminium counterparts.
UPVC doors and windows provide a much better level of security than traditional wooden doors. They are reinforced with galvanised steel which makes them extremely hard to be broken down or forced open. Moreover, uPVC is a stable material which makes it sea-water resistant, pollution resistant and also chemical proof while naturally being flame retardant as well.
uPVC doors and windows are significantly cheaper than both wooden and Aluminium options.
Available in Half, 3/4th and Full Glass Designs