Problems and Solutions for Interior Wall Putty

Interior and exterior wall putty is an indispensable auxiliary material for the construction of interior and exterior wall painting projects. With the development of the architectural coating industry, putty for interior and exterior walls is becoming more and more widespread, and TANGPENG, a supplier of HPMC for putty, provides practical construction experience to relevant industry participants.

 

Interior and exterior wall putty is an indispensable auxiliary material for the construction of interior and exterior wall painting projects. With the development of the architectural coating industry, putty for interior and exterior walls is becoming more and more widespread, and TANGPENG, as a supplier ofcellulose ether provides practical construction experience to relevant industry participants.

Crusting on the surface

Since the surface of the paste is exposed to air for a long time, Ca(oH) 2 on the surface of the putty paste can combine with CO in the air. This reaction produces CaCO and crystallizes. At the same time, the colloidal component of the putty loses water to form a film, which further forms a crust on the surface and the putty fails. For air-hard materials, isolation from air prevents hardening. If the putty mix is to be used the next day, the paste can be sealed and stored isolated from the air. As long as water does not escape and is not lost, good workability can always be maintained.

 

Spalling of wood panel surfaces

Interior wall putty scraped directly on the wood panel surface due to insufficient adhesion and toughness cannot resist the expansion and contraction deformation or slight vibration of the wood layer. Shelling and peeling will occur.
When scraping putty on wood panel, an additional 5% white latex should be added to increase the adhesion and toughness. Also, the wood panel should be painted first to avoid yellowing later. Or choose R-type exterior putty.

Humidity leads to chalking

Lime based putty batch on wet base. The outer layer of the putty can crystallize and harden very well. However, the inner side of the substrate can lose crystallization due to prolonged dampness, resulting in a hardened skin and a non-hardened inner surface, which will flake off the flaky skin and peel off the polished surface when polished. It is severely chalked.
Construction must be carried out after the wall surface has dried so that the ideal reaction environment required for calcification of lime based putty can be obtained. If such a substrate needs to be constructed, cementitious putty should be chosen as the building material.

 

RDP VAE Powder Used in Internal and External Wall Putty

 

Dampness causes bubble problems

Some walls may look dry on the surface, but have heavy moisture inside. When the humidity inside the wall is greater than the humidity of the air outside the wall, there will be an air pressure difference and the moisture will spread to the outside of the wall. If the putty is applied to the wall at this time, small dense bubbles will immediately appear.
You need to choose the right time to apply the putty and wait for the moisture inside the wall to evaporate before applying the putty. This will significantly reduce the number of small bubbles.

 

Choose us

In addition to proper construction, the quality of the putty is important to avoid common problems. Our HPMC products are widely used in wall putty applications and exhibit the following properties in construction.
Thickening: Our products thicken putty powders to improve their suspending capacity, resistance to sagging and to maintain a homogeneous solution.
Water Retention: Our product keeps the putty powder moist and allows the auxiliary gray calcium to react under the action of water.
Lubrication: Our product has lubricating effect, which can make the putty powder have good compatibility, keep it flat and save labor during construction.

 

 

Please visit TANGPENG website and find more about our products, send us a message to get the quote.