The difference between neutral putty and alkaline putty

The main difference between neutral putty and alkaline putty lies in pH value, composition, environmental performance and construction requirements.

‌pH value and composition‌

Alkaline putty‌: pH value is between 10-14. And the main components include white cement and lime calcium, which give the putty a strong alkaline gelling effect.
‌Neutral putty‌: pH value is between 7-9, and no strong alkaline gelling materials such as white cement and lime calcium are added, so it is weakly alkaline‌.

Environmental performance

‌Alkaline putty‌: Due to the strong alkaline components, it may cause a burning sensation to the skin during construction. And it is strongly alkaline before it is fully hydrated and solidified. It may cause the color paste of the surface latex paint to decompose, resulting in uneven color‌.
‌Neutral putty‌: No strong alkaline components are added, so it will not cause a burning sensation to the skin during construction. And it will not decompose the latex paint color paste. And the environmental performance is better.

Construction requirements ‌

Alkaline putty‌: After the construction is completed, the alkalinity will weaken in about a week. Therefore, it is recommended to wait one week after the construction is completed before carrying out the subsequent latex paint construction. ‌
Neutral putty‌: There will be no burning sensation during construction, and it will not affect the construction of latex paint. Subsequent operations can be carried out directly. ‌

Application scenarios and advantages and disadvantages ‌

Alkaline putty‌: Suitable for humid environments, such as kitchens, toilets, etc. It can effectively reduce wall mold, water seepage, powdering and other phenomena. ‌ However, its strong alkalinity may affect the construction and color uniformity of latex paint. ‌
Neutral putty‌: Suitable for general indoor wall decoration, it will not cause harm to the skin during construction. And it will not affect the construction and color uniformity of latex paint. It has moisture resistance and long service life, which is suitable for high-end wall decoration and old wall renovation. ‌
In summary, the choice of neutral putty or alkaline putty should be determined according to the specific use environment and needs.
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