Gypsum plaster called building material, which is widely used in finishing surfaces. Material indispensable when performing plastering in internal domestic premises.Plastering gypsum - an environmentally friendly material, which is based on plaster, which is a natural component.
Using plaster allows: create a special microclimate in the room, save heat, reduces noise isolation.
Due to the porous structure of the material at room excess moisture removed, and with increasing air temperature again saturated with moisture. These properties allow the plaster to maintain healthy microclimate.
Stucco plaster became more and more popular today. For surface treatment of its increasingly used, than sheets of plasterboard or a mixture of cement and lime.
The composition of the plaster
The basis of the plaster mixture is landplaster. To improve various properties of the lightweight fillers include various additives and modifiers. Their inclusion improved the adhesion of the composition, reduces material consumption, reduces the total dry.
Gypsum plaster is produced in the form of dry mixes, which are packaged in kraft bags. Packaged dry stucco stored in special conditions. the storage period does not exceed 6 months from the date of issue. This period may be limited to improper storage conditions. The storage room should be dry.
gypsum plaster is best suited for finishing surfaces in dry areas.
Gypsum plaster is allowed to sketch a sufficiently thick layer, removing virtually any irregularities, deep holes or damage.
Types of plaster
Gypsum Plaster firm VOLMA-layer consists of a gypsum binder, and as lightweight aggregate used additives, including mineral and chemical.
It is an excellent material in the lining of ceilings, wall. Use of the plaster mixture allows to obtain a surface, already suitable painting, lining or wallpapering.
Higher quality has plaster Knauf. But it is much more expensive than plaster firm Volma.
The main advantages of plaster of gypsum
The use of plaster can improve the insulating properties of a room, reducing heating costs.
Plastered stucco wall have improved sound insulation, increase the degree of fire protection.
In smokers improved internal microclimate. The walls are able to absorb excess moisture and release it during rapid temperature rise.
Gypsum plaster is able to hide from possible defects Strait. If you fill neighbors, after complete drying, usually, defects themselves are eliminated.
Gypsum plaster can create surface, requiring no further finishing work, such as filler.
The surface obtained already prepared for final processing. It can be applied decorative coatings.
If plaster is applied on the concrete base, the surface of the pre-primed.
complete drying time of the layer of plaster do not exceed 5 day.
Consumption of gypsum plaster composition significantly less cement.
Gypsum plaster may be applied to a thickness of 60 mm without fear of cracking, delamination or formation of shells effect.
Basic specifications
|
technical parameter |
unit of measurement |
Value |
|
| Operating temperature range |
WITH |
from + 5 to + 30 |
|
| The thickness of the finishing layer | minimum |
mm |
5 |
| maximum |
50 |
||
| recommended |
10 |
||
| Consumption per 1m2 dry mixture (layer thickness 10 mm) |
kg |
8,0-8,5 |
|
| The volume of solution, derived from 1 bag (weight 30 kg) |
liters |
38 — 41 |
|
| Time | maturation plaster |
minutes |
5-10 |
| life of plaster in an open vessel |
20 – 25 |
||
| dry layer (thickness 10 mm) |
45 – 60 |
||
| set grade strength |
day |
7 |
|
| The strength of the plaster, which gained strength branded | bend |
MPa |
1,0 |
| compression |
2,5 |
||
| grain size |
mm |
to 1,2 |
|
| Storage time in airtight containers |
month |
no more 6 |
|
Application plaster
For application of the plaster layer of gypsum adhere to specific conditions.
Before applying plaster, surface required to be cleaned from mud, old paint, dust, old plaster and primed in multiple layers.
Works are performed at a temperature of + 5 ... 25 ° C and humidity not more than 60%.
How to prepare a solution?
In a clean container filled with water and dry mixture is poured. On 0,5 l need 1 kg of dry substance. It is easy to calculate, What's on 30 kg bag required 15 liters of water.
The resulting mixture was well kneaded using a mixer. The mixed solution was aged for 5 minutes and mix again.
Shelf life of the solution thus obtained does not exceed half an hour. During this time, you have to develop a ready solution.
The new solution is prepared in a clean container.
How to plaster stucco wall
A solution of gypsum can throw the surface to a thickness of 50 mm, and in some places up to 80 mm. The solution was applied on a bottom wall up and leveled rule.
To apply the solution to the ceiling, you must first fix the reinforcing mesh.
Excess material may be cut after 40 minutes.
If necessary, stripped and putty surface is wetted with water and triturated sponge trowel. This is done on plaster, not a finger is pressed (about 10 ... 20 min after stripping).
For quality coating must be in the room during the day to eliminate drafts, direct sunlight, do not apply intensive drying.
At the end of the cycle necessarily ventilated room, excess moisture removed.
For complete drying the plaster layer is required to 14 days. The surface becomes a light and dry.
Remember! Suitable for painting the surface with a moisture content of not more than 1%.
Plaster surface can not be painted with lime paints.
From the finished mixtures we recommend using plaster Knauf and domestic or mixtures Volma Prospectors.
To prepare a plaster solution with your hands is best to use plaster, natural or artificial fillers.
Prepare yourself stucco can only be a professional builder.
Novice plasterers better to use ready-made dry mix, recommended above.
Below are recipes for plaster mixtures with their own hands.
Recipe 1
Composition:on Ekonips mixtures bag, Rotband ABS or take sawdust bag as much as possible the small size and add 3 ... 4 bag plaster.
Mix thoroughly dry all its components, To obtain a homogeneous mass.
by the way, the resulting mixture can be stored in this form,. It is only necessary to pour it into a dry plastic bags.
The mixture is used in small pieces. It is added a small amount of water, and the mixture was diluted with a mixer until smooth.
Sawdust serve as vlagozaderzhivayuschego element. Presence allows you to adjust the layer of sawdust drying speed. Reduce solution hardening rate can wallpaper paste by adding to it.
Remember! With gypsum is not compatible wallpaper glue CMC.
Recipe 2
Per kilogram of plaster is recommended to take three kilograms of chalk. The resultant mixture was added 5% joiner's glue solution.
In the first stage carefully crushed chalk, It was dry-blended with gypsum.
Poured into a clean container and the desired amount of the mixture is gradually added to the adhesive. You need to get a semi-liquid, without lumps, light gray mass.
Remember! This composition putty dries quickly after application.
Adding adhesive mixture just before use.
This mixture is recommended when finishing plastering works.
Recipe 3
Take 2 of the gypsum 1 part of linseed oil and 1/10 of the desiccant NF-1. Desiccant is used to accelerate the drying rate structure.
Instead, use gypsum allowed chalk, that allows you to use a mixture of a long period of time.
Recipe 4
For the preparation of the plaster with the slow drying rate appropriate to use a mixture based on lime.
Slow drying of the solution allows to apply a thin layer.
Preparing a solution of 1 kg of plaster and 3 kg mortar.
In a clean tank is diluted with water to obtain a gypsum plaster test and is added in small portions mortar. The composition is thoroughly stirred for one minute.
More should not interfere. This reduces the strength of mortar.
In preparing the plaster with your hands, always use individual safety equipment. wear respirators, spectacles, rubber gloves.
We wish you success!
