When it comes to home renovation, one of the most critical aspects is ensuring that all hidden work—such as electrical and plumbing systems—is properly executed and inspected. This not only ensures safety but also avoids costly repairs down the line. Here are some key points to consider when dealing with demolition and hidden projects:
1. **Structural Changes**: Any modification to load-bearing walls, such as removing them or enlarging doors and windows, can compromise the integrity of the building. Similarly, tearing out concrete or brick walls connecting balconies should be done with caution and professional guidance.
2. **Facade Alterations**: Changing the exterior appearance of a house or adding new openings on non-load-bearing walls should still be carefully planned to maintain aesthetics and structural balance.
3. **Utility Systems**: Removing gas or heating pipelines without proper permits and supervision can lead to serious hazards. Always consult professionals before making any changes to these systems.
4. **Construction of New Structures**: Building additional structures within your home, such as partitions or extensions, requires careful planning and adherence to local building codes.
5. **Room Reconfiguration**: Converting non-waterproof areas like rooms or balconies into bathrooms or kitchens can cause long-term damage if not properly waterproofed.
If a decoration company engages in any of these activities without proper oversight, it could result in an unqualified project during the final inspection. Therefore, homeowners should be cautious and avoid making unreasonable demands on the renovation company. It's also important for the company to clearly communicate with the owner to prevent future disputes.
**Hydroelectric Hidden Works**
The quality of hidden works in a home renovation is crucial—it’s the backbone of the entire project. These elements, such as electrical wiring and plumbing, must be thoroughly checked and documented. Even if you're not a professional, there are several things you can do to ensure everything is up to standard.
For example, water supply pipes are typically installed by the renovation company, and the supplier should conduct pressure tests and provide an inspection certificate. This document should be kept by the contractor and handed over to the homeowner at the end of the project, along with detailed layout maps of the pipeline system. All pipe fixings and valves should be secure and stable.
Electrical wiring should be enclosed in PVC conduits, with no more than 40% of the conduit's cross-sectional area occupied by wires. Wires should never be run alongside telephone lines, cable TV lines, or network cables. The PVC pipe wall thickness should be at least 1.2 mm, and it should feel firm and not easily bendable. Additionally, electrical wires, hot water pipes, and gas pipes should be spaced apart and never placed directly next to each other.
Wiring should be installed away from walls, not under floors or tiles, or at high levels. Switches should be installed about 130 cm above the ground, while sockets should be around 20 cm off the floor.
In suspended ceilings, wires should not be placed on the framework (keel). Junction boxes, lights, and ceiling fans should also not be attached directly to the keel. The keel itself must be fire-resistant and strong enough to support the ceiling structure.
It's essential that the renovation company provides the actual layout drawings of the electrical and water systems to the homeowner. Unfortunately, many companies fail to do this, which can make future maintenance difficult.
Wooden joists should be dry and free from moisture, especially in ground-floor homes. Moisture protection should be done using appropriate materials—not asphalt. Once the joists are level, they should not be fixed with wedge plugs. Instead, special expansion nails or a combination of nails and screws should be used to prevent noise and instability.
By paying attention to these details during the renovation process, you can ensure a safe, functional, and long-lasting home. Always prioritize quality and transparency when working with a renovation company.
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