Many consumers face confusion when replacing their home's wooden doors, only to find that the sound insulation isn't as effective as before. For example, voices from the living room can be clearly heard in the bedroom. According to industry reports, sound insulation is not a strict standard for regular wooden doors, but several quality factors can significantly impact it. Therefore, it’s important for consumers not to overlook this aspect.
**Door Seams Have Standards**
The number and size of door seams are regulated by industry standards. Typically, the gap between the door and the floor should be between 5 and 8 mm, while the side gaps should not exceed 6 mm, and the top gap should be no more than 2 mm. If the gaps are too large, it not only affects the appearance but also weakens the soundproofing effect. In winter, it may lead to heat loss, and in summer, excessive tightness can cause the door to stick due to humidity. Consumers can use a ruler to check if the gaps meet these standards.
**Sound Insulation Is Not a Hard Requirement**
Experts note that there is currently no strict sound insulation standard for regular wooden doors, except for specialized soundproof doors. However, purchasing high-quality, branded wooden doors that meet safety standards usually ensures adequate sound insulation for normal household use.
Moreover, the material of the door plays a key role in its soundproofing ability. The denser the material, the better the sound insulation. If the internal frame is too loose or the surface panels are thin, the sound insulation will be poor. Poor sealing and large gaps at the top and bottom of the door can also reduce its effectiveness.
Experts also point out that sound transmission in a living space is complex. A lack of sound insulation could be influenced by walls, ceilings, and flooring materials. Therefore, it’s not always the door itself that’s at fault.
**Installation Matters**
Wooden doors are custom-made products, so their overall performance depends heavily on installation. If installed improperly, the door may not close properly, which can greatly affect the soundproofing. To check, first, measure the door gaps to ensure they meet the standard. Then, close the door and check if the gaps are evenly distributed. Uneven gaps might indicate an issue with the door frame.
If there is a gap between the door frame and the wall, it may mean the wall is not straight or has uneven thickness. This can be fixed by a professional using sealant. However, not all gaps need filling. For instance, the gap between the door panel and the wall should not be filled with foam, as it can cause the door to warp or not close properly. Instead, a small gap of about 5 cm is needed to allow for expansion during foam curing.
**Maintenance Tips**
During use, proper maintenance is essential. In winter, using a humidifier or wiping the door with a damp cloth daily helps prevent dryness. Keeping the door open before and after heating improves ventilation and reduces the risk of warping. You can also test the lock mechanism by gently pushing the door to check for any gaps. If found, tighten it with a tool or contact the manufacturer for assistance.
A properly functioning door should close smoothly on its own. If it doesn’t, it may indicate an installation error. Contact the manufacturer for adjustments.
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