For those friends who have already decorated doors and windows, how to do sound insulation? Generally speaking, a window can be made into a double layer, that is, an additional layer is added to the existing window. Of course, the window must have good sealing performance at this time, which is the cheapest and most effective method. If you have not installed doors and windows, it is much simpler, as long as you master the following methods to choose doors and windows!

About the choice of sound insulation windows;

Look at the material: including aluminum profiles, glass, hardware, whether the color is consistent, and whether the hardware assembly is complete.

Look at the processing: The high-quality aluminum alloy window is finely processed, the cut surface is smooth, and the angle is consistent (the main frame is generally 45 degrees or 90 degrees). There should be no obvious gaps during the splicing process, and the opening and closing should be smooth.

Look at the glass: see if it is insulating glass and whether it has a coating. The composite film is generally corrosion-resistant, wear-resistant and has high gloss.

Watch Size: Check that the window size is correct.

Choice of soundproof doors:

Look at the weight: The formula of sound insulation is directly related to the density of the material, so the sound insulation of the high density is better, and the molded door is lighter, which is the root cause of the poor sound insulation of the molded door. But note: adding sound insulation cotton in the middle of the flat hollow door will sound better than the solid wooden door.

Look at the thickness: the thicker the panel, the better the sound insulation effect. Wooden door panels should generally be 8mm thick. The thickness and flatness of the surface layer is better, but the cost will increase. However, the iron sheet on the surface of the iron fire door is 3mm thick, and the sound insulation effect is also good.

Look at the flatness: the flatter the wooden door, the better the combination with the door cover, regardless of the structure. As long as the deformed wooden door is soundproof, it will not work.

Top private cinema

Tips for choosing a soundproof door:

The sound insulation of the door mainly depends on the quality of the door panel, mainly on the filling of the inner core of the door. Generally speaking, the inner core of a molded soundproof door is filled with a honeycomb structure paper base, and the closed air layer formed by it can play a very good sound insulation effect.

Treatment of walls and floors

The first method is to remove the original wall panels, install gray glue cardboard on both sides, and fill them with polyester sound-absorbing cotton. This plan will work well.

The second method is to retain the original partition wall and add several new columns to form a sound insulation wall with ester fiber sound-absorbing cotton in the middle.

The third method is simpler, that is to spread a layer of cement evenly on both sides of the built brick wall, and increasing its surface density is the most effective and economical method to increase sound insulation. The sound leakage gaps and holes also have an impact on the sound insulation of the room, especially the sound insulation of the mid-frequency part, which must be sealed. If it is a lightweight wall, low-density gypsum board or cement fiber pressure board can also be added on the inside.

In fact, for the top-level private theater in the living room, the treatment of the floor can be very simple. After the cement floor is smoothed, epoxy resin can be applied, and then carpets or floor mats can be laid, mainly for sound absorption and reflection reduction, which is the lowest cost solution. Of course, if the budget is sufficient, you can also lay the floor, it is best to choose solid wood floors.

When choosing a floor, do not choose a floor that is wide and long, which is easier to deform than a short floor. And the single block has a large area and is easy to resonate with the sound. It is recommended to choose a solid wood floor that is narrow and not too long. After laying, it will not affect the listening effect. It can also have a very good sound absorption effect without carpeting.

ceiling treatment

Many people want to make a ceiling when decorating, but the ceiling material is relatively thin, especially plywood is more likely to resonate. At present, the general treatment method is to use light gypsum as the zigzag board with uneven surface to install on the ceiling, which is not easy to cause reflection, does not reduce the actual height of the room, and saves money.

When the floor height exceeds 3 meters, the uneven surface of gypsum can be inlaid with evenly drilled lightweight gypsum board (special perforated sound-absorbing board), which is both beautiful and sound insulation.

Some friends also made flat ceilings with keel, ultra-fine glass, and plywood, which also became the resonance of thin plates.

For the sound insulation of the subwoofer, actually use a granite slab with a thickness of more than 4CM to pad the subwoofer, because the mass inertia of the granite slab can absorb part of the vibration energy of the subwoofer, and then put rubber/carpet between the granite slab and the floor, etc. The flexible buffer layer avoids the direct coupling between the subwoofer and the floor, effectively isolates the bass transmission to the downstairs, and ultimately greatly reduces the impact on the downstairs residents.