To apply a new waterproofing membrane on top of an old bitumen waterproofing membrane, the surface of the old membrane should be thoroughly cleaned and prepared. Any loose debris, dirt, or old adhesive should be removed to ensure proper adhesion of the new membrane. Once the surface is clean, a primer should be applied to promote adhesion between the old and new membranes. Finally, the new waterproofing membrane can be installed according to the manufacturer's instructions, ensuring that it is properly sealed and bonded to the old membrane to provide effective waterproofing. **

Tongue coating can be caused by a variety of factors, including poor oral hygiene, dehydration, smoking, and certain medical conditions such as oral thrush or geographic tongue. If your tongue coating does not go away despite practicing good oral hygiene, it may be a sign of an underlying medical issue that requires attention. It is important to consult with a dentist or healthcare professional to determine the cause of your persistent tongue coating and to receive appropriate treatment. **

The strange tongue coating may not go away because it could be caused by an underlying health issue such as oral thrush, bacterial or viral infections, or a yeast overgrowth. It could also be a result of poor oral hygiene, smoking, or dry mouth. In some cases, the tongue coating may persist despite efforts to improve oral hygiene, and it may require medical treatment to address the underlying cause. It's important to consult a healthcare professional for a proper diagnosis and treatment plan. **

A utility knife or a sharp blade is typically used to cut the waterproofing membrane. It is important to use a sharp tool to ensure clean and precise cuts, which will help in achieving a proper seal and prevent water leakage. Care should be taken to avoid damaging the underlying surface while cutting the membrane. **

The tongue coating does not go away immediately after piercing because the body is trying to heal the wound caused by the piercing. The tongue is a sensitive area with a high concentration of blood vessels, so the body sends extra blood flow to the area to promote healing. This increased blood flow can cause temporary changes in the appearance of the tongue, including the presence of a coating. Additionally, the tongue piercing itself can disrupt the natural balance of bacteria in the mouth, leading to the formation of a coating as the body works to restore equilibrium. **

Ideally, the waterproofing membrane should be applied in dry weather to ensure proper adhesion and effectiveness. If the membrane is applied and then it rains before it has fully cured, it can compromise its ability to create a watertight seal. Water exposure during the curing process can lead to delamination, reduced adhesion, and potential leaks. Therefore, it is best to apply the waterproofing membrane when there is no rain in the forecast and allow it to fully cure before any water exposure. **

The tongue coating may not go away immediately after piercing due to the healing process taking place in the area. The body is working to repair the tissue and fight off any potential infections, which can contribute to the presence of the coating. Additionally, the piercing itself can create a breeding ground for bacteria, leading to the formation of the coating. Proper oral hygiene, including gentle cleaning of the piercing site, can help reduce the coating over time. **

The coating on a tongue piercing typically goes away within the first few weeks of getting the piercing. During the healing process, the body may produce a white or yellowish coating on the tongue piercing, which is a normal part of the healing process. It is important to maintain good oral hygiene and follow aftercare instructions provided by the piercer to help the coating go away and promote healing. If the coating persists or there are signs of infection, it is important to seek advice from a professional piercer or healthcare provider. **