How to choose the side pressure airtight window that suits you?

The selection of suitable side pressure airtight windows requires comprehensive consideration of core dimensions such as sealing performance, material technology, hardware system, design adaptability, brand after-sales and budget. The following is a specific selection guide:

1. Core performance: sealing is the key
Sealing strip material
EPDM or silicone material is preferred, which is resistant to aging and UV rays and not easy to deform and crack after long-term use.
Observe whether the strip is an integrated design to avoid air leakage at the joint; the fit between the strip and the window frame must be tight without obvious gaps.
Sealing structure
Multi-pass sealing design: high-quality side pressure windows usually use 3 or more sealing strips (such as sealing on the outside, airtight in the middle, and waterproof on the inside) to form a stepped sealing barrier.
Isobaric chamber principle: Some high-end models balance the indoor and outdoor air pressure difference by designing an isobaric chamber to further reduce air infiltration.
Airtightness level
Refer to the national standard "GB/T 7106-2019" and select products with airtightness level 8 or above (the higher the value, the better the sealing).
Ask the merchant whether to provide a third-party test report to verify the air tightness data.
2. Material and process: determine durability
Profile material
Broken bridge aluminum profile: The inner and outer aluminum frames are disconnected by insulation strips to block heat conduction, taking into account both insulation and sealing.
Wall thickness requirements: The national standard is ≥1.4mm, and high-quality products can reach 1.8-2.0mm, with stronger wind pressure resistance.
Surface treatment: Powder spraying or fluorocarbon spraying process, corrosion-resistant and not easy to fade.
Glass configuration
Insulating glass: 5mm+20A+5mm specifications are recommended (glass thickness 5mm, hollow layer 20mm), which has better sound insulation and heat insulation effects.
Warm edge strips: Warm edge strips are used on the edges of insulating glass to replace metal spacers to reduce condensation and improve sealing.
Certification mark: Confirm whether the glass has passed 3C certification to ensure safety.
Drainage system
Hidden drainage hole design to prevent rainwater backflow; the drainage hole needs to be equipped with an insect-proof net to prevent clogging.
3. Hardware system: affecting service life
Core components of side pressure hardware
Locking system: choose a multi-point locking design (such as a 5-point lock) to ensure that the window sash is evenly stressed and the seal is tighter.
Transmission rod: The high-quality transmission rod is made of stainless steel, which is smooth and durable to avoid jamming or deformation.
Pulley set: The upper and lower pulleys need to bear the weight of the window sash. The double bearing design is preferred, which has strong load-bearing capacity and is silent.
Operation experience
The side pressure handle must be ergonomic, with moderate rotation or push-pull force, and the elderly and children can also operate it easily.
Test the smoothness of opening and closing the window sash, without jamming or abnormal noise.
4. Design adaptability: meet personalized needs
Opening method
Single-leaf side pressure: suitable for small windows, easy to operate.
Double-leaf side pressure: large ventilation, suitable for living rooms or balconies, and attention should be paid to the sealing alignment of the two windows.
Top-hung side pressure: combined with side pressure and top-hung functions, it can be slightly ventilated on rainy days, but the sealing may be slightly inferior to pure side pressure.
Size customization
The window hole size should be measured accurately to millimeters to avoid poor sealing due to size deviation.
For special-shaped windows (such as arcs and triangles), it is necessary to confirm whether the manufacturer supports customization.
Color and style
The profile color can match the interior decoration style (such as white, gray, wood grain transfer, etc.).
The glass can be transparent, frosted or Low-E coated to meet privacy or energy saving needs.
V. Brand and after-sales: long-term guarantee
Brand reputation
Choose well-known brands (such as Xuge, YKK, Jianmei, Fenglu, etc.) to ensure product quality and after-sales service.
Check user reviews and focus on sealing, durability and installation service feedback.
Installation service
Confirm whether the manufacturer provides a professional installation team to avoid air leakage due to improper installation.
Check the horizontal and vertical degree of the window frame before installation, and use waterproof sealant for caulking materials.
Warranty period
The warranty period of the whole machine is usually 5-10 years, and the warranty period of hardware is 2-5 years. Products with a long warranty period are preferred.
Understand the after-sales response speed, such as whether 24-hour maintenance service is provided.
VI. Budget and cost-effectiveness
Basic model: The unit price is about 800-1200 yuan/㎡, suitable for users with limited budget but basic requirements for sealing.
Mid-to-high-end model: The unit price is 1500-2500 yuan/㎡, using imported hardware and warm-edge hollow glass, with better sealing and durability.
High-end customized model: The unit price is more than 3000 yuan/㎡, which can realize intelligent control, ultra-low energy consumption and other functions, suitable for villas or high-end residences.
Summary: Steps for selecting side pressure airtight windows
Clear requirements: Determine the priority according to the usage scenario (such as sound insulation in the bedroom and ventilation in the kitchen).
Comparison parameters: Focus on comparing core indicators such as sealing level, profile wall thickness, and glass configuration.
On-site experience: Go to the exhibition hall to operate the sample window and feel the smoothness and sealing effect of the hardware.
Verify qualifications: Require merchants to provide test reports, 3C certification and warranty contracts.
Signing a contract: clearly specify the installation time, acceptance criteria and after-sales terms to avoid disputes.