When purchasing system doors and windows, are you still misled by some strategies, for example, which profile should be suitable for you, glass to choose 3C certification tempering, etc. Many friends who decorate for the first time have done a lot of strategies before buying doors and windows, but they are afraid of being pitted.
The following content will teach you how to choose a good system door and window from 7 aspects: profiles, glass, hardware, heat insulation strips, adhesive strips, accessories and installation and after-sales.
Oneprofiles
The first step in selecting system doors and windows is to look at the profile, which is the skeleton of the door and window, and the selection of the profile needs to pay attention to four points, the brand of the profile, the grade of aluminum alloy, the wall thickness, and the surface treatment process.
1.1 profile brand.
Look for these three types of aluminum profiles 6063-t-t-t66, of which 6 represents the aluminum alloy with silicon magnesium as the main alloying element, some merchants declare to you aviation-grade aluminum, but you look at the aluminum alloy model is also with the 6 prefix, accidentally into the pit. Among them, T5, T6 and T66 represent the heat treatment method, T5 means air cooling, T6 and T66 represent water cooling, and the results of different treatment methods are reflected in the product, that is, the hardness and toughness are different. We rank the hardness from highest to lowest as 6060-t66> 6063-t6>6060-t5.
1.2. Wall thickness of aluminum profile.
The new national standard stipulates that it shall not be less than 18mm, some businesses on the market use 14mm, what is the wall of the profile to be marked in the contract when purchasing. In addition, the sprayed film layer actually has a thickness, so the actual measurement result should be slightly greater than 14 or 18mm。Then there is the surface treatment process, the common ones on the market are electrostatic powder spraying, fluorocarbon baking paint, porcelain swimming process, the former can be customized to a higher degree of color, is the most used on the market, but also the most cost-effective profile aspects need to pay attention to these.
IIGlass
Glass is certified according to 3C, and the common ones on the market are Xinyi, CSG, Taiwan Glass, etc. The way to identify the authenticity of glass is to enter the official website of 3C of national certification and enter the serial number of the glass to query. Of the three types of glass we commonly see, the most common on the market is double-layer insulating tempered glass, which is the most popular choice for users, and ordinary houses are completely sufficient. Three-wave two-chamber glass performs better in sound and heat insulation, but it is also more expensive. If you live near a road, a large factory, or a train station, it is recommended that you choose a three-layer laminated insulating glass to more effectively isolate medium and low frequency noise.
3. Hardware
Hardware includes handles, lock points, hinges, clutches, windshields, etc., hardware must be selected to match, there are two kinds of imported and domestic, if the economy allows the selection of imported, domestic production of a full set of hardware, to ask clearly which components are included.
FourthThermal insulation strips
Thermal insulation strip has an important impact on the watertightness and air tightness of doors and windows and wind pressure resistance, divided into C-shaped T-shaped, mountain-blocking and multi-cavity, Z-shaped is an improved version of the I-shaped can be better matched, and the thermal insulation strip brand is selected Technophonal, which should be written into the contract.
FiveAdhesive strips
Keeping these four points in mind, the first material is recommended to choose EPDM thermoplastic strips, and the second is to choose brands such as Jiangyin Haida, Semperite, the third look at the number of sealing layers, generally speaking, the three seals can fully meet the normal household use, the fourth look at the amount of lap and elasticity, look at the rubber strip and the heat insulation strip, whether there is enough lap area, relatively speaking, the sealing effect of the surface lap is better than the point lap, look at the elasticity when the direct hands-on experience, the deformation difference of different rubber strips is still quite large, more than a few times or with a hand press can have an intuitive embodiment, the soft feel of the elastic rubber strip with good resilience is really good glue, no elastic rubber strip is not sealing。
SixExcipients
Including sealant, styrofoam, expansion bolts, etc., the quality of accessories determines the details of doors and windows, sealant exterior walls must be sealed with sealant, do not be confused with structural adhesive, expansion bolts are recommended to use 304 burst screws so that it is safer, the gap between the window and the wall is filled with styrofoam to be more beautiful and safer, do not use traditional cement mortar to fill.
SevenInstallation after-sales
Doors and windows also belong to the customized category of products, 3 points of products 7 points of landing, if you choose the brand does not have a good landing team, then you choose no matter how good the material, can not guarantee that you can achieve a good effect, good about some basic knowledge of doors and windows, here is almost the same, if you take the above 7 points seriously, I believe that the vast majority of businesses can not fool you.