Gypsum cardboard for your walls
Gypsum cardboard-represents plaster sheets covered with a thin, but a strong cardboard. Their length is 2,5-3,5 m., width - 1,2-1,3 m., and thickness - 8-10 mm.
In order to cover concrete walls with gypsum cardboard, it is necessary to beat preliminary to a wall concrete nails a skeleton from wooden boards. Before the beginning of work it is necessary to count precisely the sizes of a skeleton: it is important, that in places of joints of sheets of dry plaster the width of skeleton????????s wood strips was not less than 7,5 cm.
Vertical boards or wood strips are nailed up to the wall in length of 7 - 10 sm. If it is difficult to punch wall, it is necessary to drill apertures and to insert fuses, and to hammer nails on distance of no more than 50 cm from each other. Nail down sheets of gypsum cardboard you the prepared skeleton so that between them there was a space in 4-5 mm for the subsequent furnish of seams.
You should remember that there is extra empty space between gypsum cardboard and a wall that creates additional heat insulation. But dry plaster is completely not obligatory for beating to a wooden skeleton, which is taking away so precious centimeters of the living space.
It is possible to paste sheets to a wall by means of the so-called plaster test-mastic, consisting of building plaster and 2 %-s’ solutions of bone glue (glue is necessary so that the plaster would not harden at same moment). Having prepared mastic, outline it on a wall by means of spittle within the limits of the size of the gypsum cardboard leaf on distance of 35 - 40 cm from each other.
Gypsum cardboard is the best basis under wall-papers.
On edges of a leaf mastic arrange with continuous bed. Press gypsum cardboard to a wall and knock on it, leveling a surface.
If you can finish any ledge, a junction of external seams should be glued with strips of a gauze and should be carefully puttied. It is possible to close external corners with wooden or plastic corners. Seams between sheets should be filled with the plaster test.
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