The main strength and endurance of UPVC profiles is provided by a galvanized U-shaped profile, which is sometimes used by UPVC waste profiles due to its concealment in the final product. The strength of aluminum profiles is many times that of a UPVC profile.
Aluminum metal has aesthetic properties, high durability, paintability and many other properties.
In the past few years, unfortunately, regardless of the specific climatic conditions of the country, compared to European countries, UPVC doors and windows profiles have been imported or produced in the country, due to the lack of technical and scientific knowledge and incorrect advertising. It has created a widespread fever among some consumers and is part of the consumer market in the construction industry and the supply of glass doors, windows and facades.
But it will not be long before the level of consumer awareness and science and experiences of using this type of doors, windows and facade coverings and the occurrence of problems due to the passage of time created in the PVC consumer market can be quickly and clearly felt and seen.
Despite the known problems and the consequences of using PVC in the construction of doors and windows and its application in the appearance of buildings, another discussion was opened among some manufacturers of this product in order to maintain the PVC consumer market and that is the replacement of doors and windows with materials. And UPVC was a substitute for PVC, while 90% of what is on the market is not essentially UPVC because the price of UPVC is at least twice the price of PVC, which is not affordable for most consumers and is not economical.
Much has been written and much discussion has been made about the differences between UPVC and aluminum doors and windows, but if we want to summarize and summarize the material in this field, we can mention the following: :
In order for a window or door, especially in the dimensions that are considered to be bigger and wider in the designs every day, and also due to the high weight of double-glazed glass, to have its proper performance, a degree of strength and flexural strength is required. Aluminum with special profile and 6063 alloy and a UPVC window is instantly recognizable.
Most of the strength of UPVC profiles is provided by a galvanized U-shaped profile, which is sometimes reduced in quality due to its concealment in the final product, so the flexural strength of an aluminum profile is clearly many times that of a UPVC profile.
These characteristics of products are understood in its use and especially over time. The hardness of aluminum is 27 times that of UPVC, which makes it a significant advantage over aluminum over UPVC. However, the hardness of UPVC is so low that even wood is four times harder than UPVC.
3- Connections:
In UPVC windows, connections are provided only in the outer and visible parts, especially in the corners with the welding system. This is not the case even with galvanized U-profiles that run all over the profile. In aluminum windows, relying on several common joints, especially screw and rivet fittings, as well as punching using solid aluminum pieces, the bonding power is extremely high and incomparably high.
4- Installation of fittings:
Despite the very similarity in the fittings of both systems and the variety of different brands, in this regard, hinges, handles and other fittings in UPVC windows are mounted directly on profiles of the same material. It is weaker like a screw and opens the so-called space. As a result of this action, we see a lot of sash and other deformations in the UPVC window, which happens much less in aluminum because the fittings are directly attached to the aluminum metal.
5- Sliding systems:
The high friction and bending nature of UPVC particles has created a problem and has led to very low production of UPVC sliding doors and windows, and almost most reputable companies in this field do not produce such products. Of course, some companies use fittings called so-called (Volkswagen) to produce this product, which is not given much attention in front of aluminum sliding doors and windows, which do not have these problems.
6- Paintability:
UPVC is basically non-dyeable and for the production of dye products, color granules must be added when producing the profile, in a limited range of colors, which is difficult and not recommended and clearly reduces the quality of the profile.
While electrostatic powder paints with extraordinary variety provide more than 200 different colors to consumers of aluminum profiles that are hardened in the furnace and are anti-impact and anti-mold.
In addition, the variety and beauty of another coating and painting system, ie anodizing, can only be extracted in aluminum.
In other coating systems, such as wood and stone designs, etc., which are also called decorative, in the case of UPVC profiles are provided by stickers or labels, but in the case of aluminum profiles with printed colors and hardening in the furnace, it is durable and beautiful.
7- Fire resistance:
At low temperatures it deforms and loses its shape. At relatively slightly higher temperatures, it also melts and burns completely, in which case the smoke from the burn is suffocating and poisonous. Fire also destroys doors and windows.
However, aluminum retains its shape and material at high temperatures, and only at very high temperatures, when almost all components of the building are destroyed, does aluminum also disappear, not all at once, but gradually.
8- Capital goods:
UPVC is not recycled in any way and is a harmful product for the natural cycle of the environment.
But aluminum, as a high-consumption natural element, is valued after even a few centuries and is seen as a capital commodity and can be easily recycled and reproducible at low cost.
In the period of natural temperature, it also loses its quality. That is, at the above-normal temperature, which has already been mentioned, and also deforms in the natural cold, or it hardens and cracks and becomes brittle. UPVC also changes color and yellowing in the sun, even if the UV-resistant coatings, the quality of which can not be tested for the consumer, and have become more beautiful and advertising sentences, even if used correctly, ensure reliable performance and durability. Has not shown experience. This is in the context that the resistance of aluminum to the above climatic conditions is obvious and does not need to be explained.
10- Energy loss:
The most obvious advantage of UPVC over aluminum, which often leads to pride and erosion, is its low heat transfer coefficient, which, of course, is lost despite the thermal break product of aluminum. However, it is good to measure the difference between the energy dissipation of a UPVC product and a non-thermal product of aluminum breaker and in fact ordinary.
The greatest loss of energy in doors, windows and windows is due to their lack of ventilation and the air blinds they create.
The above two products, if properly manufactured, are both airtight. Secondly, 90% of the surface of the door and window is made up of glass, which in both cases is double glazed and there is no difference between them. Therefore, the difference between two similar products is only where about 5% of the surface can be. That is, if we assume the maximum heat transfer coefficient of aluminum and the heat transfer coefficient of UPVC for example zero (which of course is not the case), the loss of a normal and non-thermal aluminum window breaker can still be 5% higher than UPVC, which is actually less than This amount is correct, and it is a number that is almost negligible in terms of proportionality.
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1398/11/10
