Both plaster and putty are intended for leveling the surface and removing its defects before finishing the room. However, between these materials there are great differences that affect the choice of one or the other of them. So, what is the difference between plaster and putty?
Putty
The putty is designed for leveling walls with small deviations from a flat surface. It can be used for grouting cracks, small holes (for example, holes from nails), scrapes, scratches. The putty can be used for leveling surfaces with grooves up to 1 cm wide.
The composition of the putty includes various astringent components, such as gypsum, various polymer materials, cement. The difference between plaster and plaster is that it is usually sold in ready-made form, as it is very difficult to independently maintain all the technology to obtain a homogeneous composition of the required viscosity.
All putties differ in starting and finishing: the starters are designed to fill the defects and unevenness of the wall, finish using to finally level the surface, prepare it for wallpapering or other type of final finishing. Thus, choosing what is best: plaster or putty, it is worth to assess the initial condition of the wall. If it is generally flat, but there are minor flaws, it is better to stop on the putty. For more difficult situations, there is plaster.
Plaster
A plaster is a mixture used to bring a wall to one level, based on cement. It can even even surfaces with very large defects: up to 15 cm difference. The difference of plaster from the puttying of walls is also expressed in the technology of leveling: for the use of putty it is sufficient to process only the places with cracks or other problems, while plastering usually the wall as a whole. This happens in three stages: first, the material is applied to the "nabryzg", bringing the walls to one level, then make a primer layer and complete all the "covering" with the top layer.
You can see the difference between plaster and putty and during the drying time of the material: the putty dries for about one day and then you can start finishing the wall, and the plaster to dry and set the half strength, which allows you to proceed to further work, it takes several days.
Many have legitimate questions: if these materials are so similar, then what to use first: plaster or putty? And also, do I need putty after plastering? The answer in both cases will be negative. If you are going to in any case to plaster the walls in the room, then there is no need to level them with putty. All chips, cracks and holes will be filled during the first stage of the plaster - "spray". Similarly, if all the plastering work is done in accordance with the technical requirements and orientation to the level readings, and the material is given the necessary time for solidification, then there should be no blemish on the wall, which makes the use of putty unreasonable. You can only use the putty if you want to make a new finish on a long-stucco surface, for example, remove old wallpaper and paste new ones. Then, when cleaning the old cover, bumps or small chips may form in the flat surface of the wall, and the putty will be an excellent solution to this problem.
