How plaster dries , and what does it depend ?

How dry plaster at home

walls and the roof of your home allow to forget that in a climate zone it is built, and the weather (or the weather), the most frequent of the windows.Therefore, in rooms normally kept exactly the temperature that is comfortable to you and what is achieved by this climate, wall heating, or thick, and can both of them together - it does not matter.The main thing is that in these conditions the drying time of plaster can be determined in advance, knowing the properties of the mixture, as determined by its composition.

There is a certain formula that is suitable for all types of plaster, except, perhaps, plaster 1 mm plaster layer = 1 day.But in ideal conditions, that it is possible to create in the room, the formula changes slightly: 2 mm plaster layer = 1 day.

But whether this equation work?

And, by the way, what are the ideal conditions are?First of all, the room must be stable and, most importantly, a low level of humidity.Also, you need to take care that the substrate moisture content (at least to the eye, approximately) was not more than 8%, it is according to the Russian SNIP, that is, building codes and regulations.

The room temperature must be above 10 degrees and below 30 is ideal - in predelah18-20.

accelerate drying plaster premises using heaters or arranging exhaust ventilation (especially synthetic origin) in any case should not be, because it will lead to cracks or even delamination of the coating.It should also be borne in mind that low temperatures slow down the drying process, as well as the high humidity in the room.So if it's cold or rainy weather lasts more than one day, preferably in the room where the plaster decoration was carried out, the windows do not open and not to make drafts.But fresh air is needed, so the room should be a moderate ventilation.

Drying time of plaster outside

No matter how much dried up plastered exterior surface of the walls, the weather should be different for at least a half moon to finish managed to grab and gain sufficient strength.Therefore, for outdoor use need to choose the most dry season, the rain did not expected a disaster.However, a sudden downpour and no better, so carefully study the weather forecast.However even in the most arid time the plaster is dry as much as allow its characteristics , which mainly depends on the composition.

For example, how much do you think the plaster dries outdoors if it is a mixture of cement and sand?Be sure the outside of the house, it does not dry out much faster than the inside, that is, about 25-30 days, taking into account the necessary time to strengthen it."? And how decoration of facades with plaster in several layers," someone asked, - "Such a gap between each layer to withstand?".When superimposed layers of plaster, usually complete drying of the previous layer before applying the next one is not required, it is sufficient that the composition of seized and firmly held to the wall, so between the layers of cement-sand mixture enough to wait a day.

How plaster dries, after all?

Exterior finish is carried out only with plaster facade, the main components of which are portladtsement and quartz sand.Such a cement-sand mixture, as mentioned above, gaining maximum strength only after 30 days.If you are using lime plaster with the addition of cement, each successive layer can be applied after 6-8 hours and completely dry after coating nedelyuy.But the plaster hardens within half an hour, and when applied to the wall in several layers is well dries in about 4 days.

Thus, given at the beginning of the formula, in fact, is very rough, and, apparently, is directly related to the cement-sand mortar plaster.It is therefore easier to focus on the degree of drying of the coating on bleknuschim important spots, brightening the wall surface and the approximate date, when building codes composition should be dry out.