One, Does renovating involve the use of formaldehyde?
1. Generally, putty powder does not contain harmful substances such as formaldehyde, but is made of natural inorganic minerals, primarily composed of talc powder and glue. Putty powder itself typically does not contain formaldehyde. However, when applying putty, to improve its adhesion, glue is often added during mixing. This glue usually contains formaldehyde, so the putty application process involves formaldehyde.
Additionally, some construction workers add resins such as linseed oil or varnish to the putty powder mix to improve its gloss and adhesion. These materials also contain formaldehyde, which reduces the environmental friendliness of the putty powder. Therefore, applying the putty powder inevitably results in a product containing formaldehyde.
2. The putty powder itself releases minimal formaldehyde. The primary source is the glue used in the mixed putty paste. If the paint and putty materials used are of high quality, ventilation may be sufficient to eliminate the formaldehyde within one month. However, if the glue material is of poor quality, or if there are infants or individuals with respiratory or skin sensitivities in the household, it may take up to six months or longer.
Therefore, the release of formaldehyde is actually dependent on the material itself. When purchasing materials, it is important to pay close attention. I recommend that you conduct an indoor air quality test before moving in to ensure that it meets the required standards.
II. important considerations for applying putty powder
1. Before construction, ensure you have sufficient ready-mixed putty paste based on the indoor wall area and quality. It is crucial to select high-quality, environmentally friendly putty paste from reputable brands for peace of mind regarding environmental protection and product quality. Also, pay attention to storing the putty paste in a cool, dry place to prevent moisture and damage.
2. Before applying the putty powder, it is essential to ensure that the ambient temperature on the construction day is within the recommended range. Applying putty powder when the temperature is below 5°C or above 35°C is not recommended. When the temperature is below 5°C, the additives added to the putty powder will not be fully dissolved, resulting in the putty layer failing to form quickly, and the additives will not be effective, leading to waste.
3. During construction, the thickness of the putty should be maintained between 0.5mm and 1mm. If the thickness exceeds this range, it will cause the shrinkage strength of the putty layer to increase, leading to cracking. If the putty thickness is too thin, the water in the putty layer will quickly evaporate, causing the putty layer to become powdery.