New national standards have been implemented! When choosing doors and windows， don，t just rely on the thickness of the profiles anymore.

When renovating the windows and doors at home, many consumers would ask the first question: How thick is the profile material? Many merchants also use the thickness of the profile material as the main selling point. With the official implementation of the new national standard for aluminum alloy windows and doors (GB/T 8478‑2026), when choosing windows and doors, one cannot only focus on the thickness of the profile material.

The new standard clearly specifies all the performance requirements for aluminum alloy windows and doors, including the profile material, insulation strips, insulating glass, air tightness, water tightness, and wind pressure resistance. The past chaos in the market, such as falsely marking the thickness of the insulation strips, using inferior PVC insulation strips, and using ordinary insulating glass as energy-saving glass, will be further restricted. A good set of windows and doors is a whole composed of the profile material, insulation strips, glass, sealing system, and installation process. A single parameter cannot determine the quality of the entire set of windows and doors.

The insulation strip is the "heart" of energy-saving windows and doors. High-quality PA66 nylon insulation strips are resistant to high temperatures and aging, ensuring the insulation performance of the entire window; inferior PVC insulation strips are prone to thermal expansion and contraction deformation, and will crack over time, directly causing the windows and doors to leak air and water. When choosing, be sure to confirm the material of the insulation strip and refuse inferior products of unknown quality.

Glass accounts for more than 70% of the area of the windows and doors and plays a decisive role in sound insulation and heat insulation. Ordinary insulating glass, argon-filled insulating glass, and laminated glass have different application scenarios. For residential buildings facing the street, laminated insulating glass is preferred to improve sound insulation; for high-rise buildings, attention is paid to wind pressure resistance; for self-built houses and villas, insulation and energy saving are the priorities, and matching low-emissivity glass can truly achieve warm in winter and cool in summer.

Many homeowners have fallen into traps: the profile material and glass configuration are good, but after moving in, water seepage and air leakage occur. The root cause often lies in the installation. No matter how good the product is, if the installation is not standard, it is all in vain. The waterproof treatment of the exterior wall, the installation of the secondary frame, the foaming filling, and the weatherproof sealant are all steps that affect the long-term use effect of the windows and doors. When choosing, in addition to checking the product price, be sure to confirm the installation standards, warranty scope, and avoid the trap of adding extra items at low prices.

With the promotion of the old-window-replacement policy for windows and doors, more and more homeowners in old residential areas are starting to replace their windows. Remind consumers that do not blindly pursue low prices. Behind the low price, there is often a reduction in configuration and simplification of installation. In the new standard era, when choosing windows and doors, pay attention to the overall performance of the entire window, understand the K value, sound insulation level, water tightness and air tightness levels, and attach importance to the insulation strips, glass and installation, so as to select durable and high-quality windows and doors.