As a rule, the wooden surfaces covered with an oil paint, should be ostrugany. (Usually it mechanical) depends On quality of planing also surface preparation. The surface painted for the first time, is grounded by preliminary warmed-up drying oil or oksolem. In this case drying oil is more deeply absorbed in a surface. For the wooden surfaces painted in white colour, in soil drying oil it is desirable to add a little a white paint (it is desirable MA). After drying, a soil paint it is desirable places where there are knots and pitch, to cover with a nitrovarnish. Otherwise after time for the painted surface there can be yellow stains. .
For shpaklevanija small surfaces (a window, a door) the best shpaklevkoj is shpaklevka PVA a production association "ИыюЁр" which consistence approaches for this work. For shpaklevanija the big surfaces all are equally suitable building shpaklevki (recipes are given above). .
a Fig. 10. Drawing receptions shpaklevki on a surface with the help shpatelja:
And, - at position shpatelja at an angle 40 ° and 60 ° the layer shpaklevki turns out thicker, in - at position shpatelja at an angle 80 ° the layer shpaklevki turns out more thin, g - each subsequent number shpaklevki blocks previous on 2-3 sm, d - shpaklevanie in cross directions.
Earlier painted surfaces wash with soap water. If an old paint strong and shining, it is preliminary desirable to moisten it with solvent (СР-2, gasoline, turpentine). If the old paint coat became thick and rough from reusable colouring, it needs to be removed completely. For this purpose an old paint cover with softening paste which does a layer soft and then an old paint scratch off steel shpatelem. The industry produces the softening liquids consisting of a mix of solvents:
That softening liquids kept on vertical surfaces, they should be mixed with a chalk before formation of paste and then to smear shpatelem on a wall. To work with softening paste it is necessary in goggles and gloves. .
It is possible to prepare Softening paste and under the following recipe:
- the Chalk of 2 parts
- 30% th solution of caustic sodium.
Paste leave on a processed surface at 1,5 o'clock. After removal of an old paint the surface is washed out by 2% th solution of acetic acid. The old paint can be burnt out a blowtorch. Within several minutes the flame will kindle a paint and it at once delete a metal scraper. This reception can use at clearing only those details which can be taken out from a building. .
Removal of a paint by a blowtorch in a building is extremely dangerous also fire prevention rules it is strictly forbidden. Cleared by a burning out of a paint it is necessary to wash out a surface water and 2% th solution of acetic acid. Then a surface ground and shpakljujut also, as well as by preparation of a new wooden surface. .