The white caulk, after a short time, mold and black, what to do?

You can use a rag to dip some detergent and gently wipe the surface of the seam, or you can use toothpaste to brush it, or use edible alkali.

To brush, you can also use baking soda.

Brushes, all brushed clean.

If it is moldy, you need to shovel all of these, re-caulk, and change the color of other caulk.

Mix the bleach and baking soda 1:2 first, then apply the old toothbrush and mixture to the moldy area and let it sit for 30 minutes.

Before pasting tiles, the floor tiles are soaked in water (most of the soaked water will become moldy after a long time).One day after the joints are plugged, the melanocytes in the porcelain tile evaporate and migrate to the caulk with the water vapor in the porcelain tile tiles. Joints are commonly used with tools or the bottom of the wall is not clean, and external compounds are polluted by air. The soaking time of porcelain tiles should not be too long, and it is recommended to plug the joints within 3 days for the porcelain tiles that have been soaked in water.

Common tools for plugging joints and the bottom of the wall should be cleaned before plugging joints. Caulk is similar to concrete, and the water is less than able to solidify. More than 10 years ago, houses were generally caulked with cement, and the gaps would turn black after a month of tiling.

Nowadays, caulk is basically used. After the floor tiles are laid, the joint plugging is a smaller job, but this link is easy to go wrong. For example, the length of the work is inappropriate.

The caulk should not be filled until 48 hours after the tile is pasted, and the bathroom should be kept dry during this period. If it rains, the time will need to be extended.

This is to allow the water vapor in the floor tiles to escape and dry through the voids. If caulk is applied without drying, it will seal the water vapor inside and cause mold to the internal structure of the floor tile. This will stain the caulk with a light yellow or black-gray color.

Today's employees don't typically wait 48 hours, often after a day to plug the joints. If the sun is shining, the seam can still be plugged after 24 hours. However, if it is less than 24 hours, such as pasting floor tiles in the morning and plugging the joints in the afternoon, there will basically be problems.

If it is a difficulty in the quality of decoration, since they have not moved in yet, they are still decorating the house, then they can directly cooperate with the decoration company to scrape and plug the joints again. Once again, the plugging must be cleaned and tidy. If it is a product quality problem, it is recommended to return it and compensate.

If the business is better, you can still need compensation, remember to be emotional, and move people with emotionIf it really doesn't work, you can let the merchant sell other products cheaply so that you can be regarded as another kind of compensation.

Summary. Hello, the reasons for the whitening of the black caulk of the exterior wall tiles after filling: 1. The surface is not washed with water too early when it is not initially dry;

2. Rainwater before initial drying after construction;

3. Excessive water distribution;

4. The sponge used in the initial cleaning is too wet;

5. The base layer is too wet.

Solution: 1. Clean after initial drying (about 24 hours, adjust the time appropriately according to weather conditions);

2. Avoid construction in rainy days and do appropriate rainproof protection;

3. Adopt an appropriate water-cement ratio;

4. Wring out the sponge for preliminary cleaning as much as possible;

5. The base surface is dried before construction.

Why does the black caulk of the exterior wall tile turn white after filling the tile, why does the black caulk dry and why does the caulk change color.

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Hello, the reasons for the whitening of the black caulk of the exterior wall tiles after filling: 1. The surface is not washed with water too early when it is not initially dry; 2. Wutan is subject to rain before the initial drying after construction; 3. Excessive water distribution; 4. The sponge used in the initial cleaning is too wet; 5. The base layer is too wet. Workaround:

1. Clean after initial drying (about 24 hours, adjust the time appropriately according to weather conditions); 2. Avoid construction in rainy days and do proper rainproof protection; 3. Adopt an appropriate water-cement ratio; 4. Wring out the sponge for preliminary cleaning as much as possible; 5. The base surface is dried before construction. Orange mess.

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There is no primary dry caulk on the surface, whitening; Other reasons cause the caulk to lose water too quickly (such as heating and drying, powder loss, mainly due to the organic additives in the caulk surface layer do not play a role, premature rinsing with water or the initial cleaning of the sponge or the base layer is too wet; 2) the reasons why it does not work; 3) The water absorption rate of ceramic tiles is too high; There may be the following factors for adding too much water to the caulk: 1) ; Causing the caulk to lose water too quickly;

In the normal process, the tile can only be caulked after 48 hours, and at this time to keep the air dry in the space, this is so that the water vapor in the tile can be dissipated along the gap, dry, if this step is not paid attention to, the water vapor in the tile will be sealed in the gap, and the long-term humidity will lead to mildew inside the tile, which is one of the reasons why the caulk is dyed yellow or black.

Method 1: Refill the caulk with a more professional sewing agent, even if you pay attention to protection, the gap will turn yellow and black after using it for a period of time, even if it is an imported caulk. To solve this problem, you can use a sewing agent.

The beauty sewing agent is applied to the surface of the caulk to protect the caulk.

The difficulty lies in removing the original moldy caulk in the gaps, otherwise it is difficult to continue the follow-up work, be careful not to scratch the corners of the tiles, and be careful not to scratch the hands, after all, the tiles are still very sharp. After the removal is completed, it should be carefully cleaned first, and when the gap is half dry, you can fill the gap with the sewing agent, be sure to fill it, and remember to wait 24 hours before walking on the gap.

Method 2: Keep it dry! Keep it dry! Keep it dry!

Generally, the mildew of the cracks is mostly located in the rainy southern families, it is very important to keep the home dry, often use a dry rag to mop the floor, the humid environment is simply the cradle of black and moldy tile gaps.

Method 3: Choose the right tiles.

In places like bathrooms, the humidity is generally high, so the requirements for tiles are higher, and waterproof, slip resistance, and wear resistance are required. Bathroom floor tiles can be used full-body bricks, which have good anti-slip and wear-resistant. It is recommended to use glazed tiles for bathroom wall tiles, which are glazed with rich color patterns and strong anti-fouling ability.

Method 4: Chemistry saves the world.

To prevent mildew in tile joints, you can pay attention to daily cleaning, and you can choose to clean with dish soap, soap, etc. Cleaning the crevices with soap and a little ammonia and turpentine will make the tiles and crevices shinier.