If you replace the balcony window sealing and these five questions are not clear, you are likely to be fooled by others. It is recommended to save them in advance for later use.

1. Preparation before selection

1. First Go to the property management company and ask about the conditions for replacing the sealed windows. Are there any requirements for the color of the sealed windows, profile specifications, glass thickness, opening method, construction work time, etc.

2. Clarify your own needs, whether to use aluminum alloy or broken bridge aluminum, whether to use sliding windows, casement windows, system doors and windows or inverted sliding doors and windows, in terms of noise and sound insulation There are no requirements.

3. Pre-measure the size, calculate the area of ​​all windows, and mark them accordingly. (Evaluate the budget based on the merchant\’s quotation)

2. What material details to look for when purchasing aluminum

1 , Check the authenticity of the aluminum material, buy a real broken bridge rather than a fake broken bridge

The aluminum of the real broken bridge is completely separated into two halves by the heat insulation strip, and the aluminum materials on both sides are not connected. False broken bridge aluminum only distinguishes most of the aluminum materials.There must be a strip of aluminum connecting the two sides. (Green marks are heat insulation strips)

2. Look at the quality and thickness of the aluminum material

Buy native aluminum Do not buy recycled aluminum for aluminum (model 6063-T5). Buy those with a wall thickness of ≥1.8mm for the outer windows and ≥1.4mm for the inner windows. Also remember, buy national standard aluminum rather than non-standard aluminum. Non-standard aluminum is an order-based production, and there is a serious shortage.

3. Look at the sealing strip

Ternary should be chosen for the sealing strip Made of ethylene-propylene material, it has good sealing effect and does not leak air. The sealing method should be compression type rather than overlap type. The number of sealing passes should be at least three.

(1) Compression seal, large contact area and good sealing effect.

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Please note that EPDM strips have single-cavity, double-cavity, and multi-cavity. Theoretically, the more cavities The better the seal.

(2) Overlap sealing has a small contact area and is prone to ventilation and air leakage. It has no sound insulation, noise reduction, and heat preservation functions. OK.

For window sash sealing, choose double lap joint instead of single lap joint. When the single lap sealing window sash and sub-frame are squeezed, the contact surface is small. The contact surface is large during double overlap extrusion, and the sealing effect of the latter is better than the former.

4. Look at the heat insulation strips

Look for the PA66 heat insulation strips , tough enough not easy to break, good sound insulation and heat insulation effect, PVC cannot be bought no matter how cheap it is, its common problem is that it ages quickly and breaks easily. Let me emphasize again that there are several types of insulation strips: multi-cavity, single-cavity, straight-line, and C-shaped. The insulation effect of multi-cavity is better than single-cavity, and C-shaped is better than straight-shaped.

In terms of design, the insulation strips have a multi-layer vertical isothermal structure and a multi-layer dislocation structure. In addition to the difference in appearance, The thermal insulation effect is the same (same specification of insulation strips).

5. Look at the aluminum cavity Shuhe sound insulation cotton filling situation

Theoretically speaking, it is better to have more aluminum cavities than less cavities, more filling with blocking cotton (insulation cotton) is better than less filling, and filling is better than no filling. Remember, the number of cavities and the difference between them. The greater the filling ratio, the better the thermal and sound insulation effect.

6. Look at the crimping line

The overall crimping line is preferred, followed by assembly. , the overall molding line has high strength and sufficient rigidity, and has better support and protection effect on the glass. The assembled strength is not good, the drain outlet is exposed, and the overall quality is not as good as the former.

Select closed crimping instead of open crimping for assembled crimping (glass buckle). The open crimping crimping strip is easy to loosen. It is easy to leak. The arc shape is preferred, followed by the beveled one. The straight-edged type is the last choice. The arc-shaped glass looks good and is easy to take care of. The beveled glass has a large viewing area.The straight edge is abrupt.

7. Look at the bumper technology

The bumper craft is the first choice. The seam welding process has a stable structure, good sealing and no leakage. The second choice is the pin glue injection process and the corner installation process. The structure is solid, but there is a risk of water leakage after being used for a long time. The last choice is the movable corner code process for newly installed windows. It will also leak.

7. Look at the material of King Kong Net

Select 304 or not for King Kong Net 201, 201 is prone to oxidation and rust.

3. Details of purchasing hardware accessories

1. Look at the brand

For import, choose Häfele, Noto, Sobenko, Gies, Vibchi, and Myco. Domestic products include Bo, Stamford, Kinlang, Paige, Shimek, Higo, Chunguang

2. Look at the material

Use 304 instead of 201 for expansion screws and slide rails, and use 304 stainless steel for hinge fixing screws instead of iron screws.

4. What details to look for when buying glass

1. Understand the needs

Viaducts and downtown areas have high requirements for sound insulation, so three-glass and two-cavity insulating glass should be selected. Places with typhoons have high requirements on the impact resistance of glass, so insulated laminated glass should be selected. Unless there are special needs, just choose insulating glass or single-sided insulating laminated glass.

2. Look at the certification mark and maximum allowable area

Buy glass National CCC certified tempered glass does not buy non-standard tempered glass. The insulating glass should be filled with argon gas instead of nitrogen. It has high requirements for anti-fog function and the filling ratio should be greater than 90%. The most important thing is that the design must consider the maximum allowable area of ​​​​safety glass. Exceeding the standard design will cause great safety hazards. Please see the picture below

3. Look at the glass sealing method

The first choice for glass sealing is tape sealing, followed by glass glue sealing. Let me explain here, as long as the construction technology is in place, the sealing effect will be the same. , the only difference is that you can replace the adhesive strip yourself after it ages, but you must ask a master to repair it after it ages.

4. Look at the glass pad

The glass pad has a distributed weight to promote the circulation of water in the window frame groove. , correcting the effect of glass. Therefore, it is better to have glass spacers than without them.

5. Look at the insulating glass aluminum strip process and molecular sieve size

Aluminum The aluminum strips produced by the integrated bending process are thicker, have smaller molecular sieves, are better in appearance, and have better moisture and mist absorption properties. grainThe larger the particles, the worse the moisture and mist absorption performance.

5. How to choose the opening method?

Ping When opening a window, choose inward opening rather than outward opening. The bumping of inward opening windows can be overcome (this can be solved by installing a 180-degree hinge). Falling off of outward opening windows will either injure people or be fatal.

If you have money, buy inward-opening and inward-tilting windows. They can both open inward and inwardly. Ventilation can be maintained when the windows are inverted. , the rainwater won’t get in when it rains.

I feel that inward-opening windows bump into each other and inward-opening inverted windows affect the curtains. It is recommended that you consider moving inverted windows to satisfy ventilation without taking up space.

If ventilation requirements are high, choose traditional sliding windows. Do not buy external-opening top-hung windows, internal-opening bottom-hung windows, mid-hung windows, and transparent folding windows, as they have a higher chance of repair.

In short, if the above five details are achieved, 90% of the door and window sales staff will be killed instantly. I believe that the merchants will never trick you.