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the Covering of external walls of old buildings

the External covering protects walls from atmospheric influences, raises teploizoljatsionnye qualities of a wall, improves appearance of a building. Incorrectly constructed or without a covering the bottom number of logs of the house already through pair tens years demands replacement and other capital works. .

Errors at a covering of wooden buildings. The biggest error at a covering, it is necessary to consider a covering of walls from an outer side as roofing material. It seems, to this error till now pay attention as, unfortunately, at us still it is a lot of the buildings sheathed by roofing material a little. Often the one who upholsters, knows that roofing material is not recommended for this purpose, but does not believe that results can be so pitiable.

During the post-war period as coverings for wooden buildings at us almost only roofing roofing felt was used. It impregnated with slate pitch. It sufficiently passes water steam and from the point of view of condensation of a moisture of special danger does not represent. Now at us let out roofing material which is much better some usual roofing felt and adequately paronepronitsaem. .

Otsyrevanie of the walls covered with roofing material. The moisture being in air constantly moves from the warm environment to the cold. As the temperature in a room usually above, than out of a premise and warm air contains more than water steams (cool, but with the smaller absolute maintenance of water air seems to more damp), the moisture containing in room air aspires to get through a wall outside. Through usual stenovye materials - a brick, plaster, wood etc. - the moisture gets freely. If the wall is covered by roofing material, bitumen or other water-proof material, the moisture through them does not get. If the water-proof layer is on an external surface of a wall, for example, between a wall and a covering, the moisture is condensed on this layer as well as on a cold windowpane. From windowpanes it is possible to remove a moisture premise airing whereas from roofing material the moisture is absorbed in wall logs. Than above quality of roofing felt or roofing material and the more densely it is beaten to a wall, the it is more danger of rotting of walls under the influence of a moisture condensed on it. Thus, the moisture threatens a wall not outside, and from within.

It is especially dangerous to place roofing material between a wall and an external covering. Such wall it becomes fast the damp. And, usually it is considered that dampness goes outside through a brick covering or through plates TEP. Actually the premise wall becomes crude under the influence of a moisture getting from a room outside.

The Layer of roofing material from the interior of a wall of dampness does not cause, as here temperature above and the moisture is not condensed. .

the Spadework . If the wall is outside upholstered by roofing material, it needs to be removed completely. It is necessary to replace rotted through bottom numbers of logs of a building new. In the absence of the insulation layer, on the base, under the bottom log it is necessary to put two or three layers of roofing material. To put the insulation layer, a wall gradually lift the lever or a screw jack (for example, an automobile jack) on some centimetres.

Cracks between boards also drag away logs it is necessary carefully and densely zakonopatit. Cracks between horizontal logs of walls cannot be filled too densely a tow as in this case the wall rises, and further a little, settling, can spoil a covering. It is densely possible to caulk cracks in the walls combined from vertical logs or bars.

a Fig. 40. A covering from horizontal boards: and - a covering vnahlest, - a covering shpuntovannymi boards vnahlest, in - polushpuntovannaja profilirovannaja a covering, g - shpuntovannaja profilirovannaja a covering, d - socle otlivnaja a board, e - without socle otlivnoj

a Fig. 40. A covering from horizontal boards:
And - a covering vnahlest, - a covering shpuntovannymi boards vnahlest, in - polushpuntovannaja profilirovannaja a covering, g - shpuntovannaja profilirovannaja a covering, d - socle otlivnaja a board, e - without socle otlivnoj

the Covering of external walls boards . The Most common material for a covering of external walls are boards which it is possible to have horizontally or vertically. According to it the covering is called as horizontal or vertical.

a Fig. 41. A horizontal covering round a window.

a Fig. 41. A horizontal covering round a window.

The Horizontal covering usually becomes "тэр§ыхё=" when the bottom edge of one board is located on an upper edge another (fig. 40, and, 40, e and 41). Of 2,0-2,5 sm are used usually as strogannye and not strogannye edging boards in the thickness and in the width 12-15 the Size nahlesta usually see undertakes to an equal thickness of a board. Bottom edges of boards of a covering "тэр§ыхё=" form on the sun dark strips of a shade that does a covering relief and elegant. .

Dry and narrower boards can be nailed up at once through two boards (fig. 40, wider - everyone (fig. 40,).

The Horizontal covering becomes more often from polushpuntovannyh boards (fig. 40. On the sun the bottom edge shpuntovannoj boards is a little jarred on also a covering starts to pass a wind. Therefore it is better to use shpuntovannuju a board (fig. 40,) that provides protection against a wind and heat preservation indoors.

The Vertical covering (fig. 42) becomes from boards in the thickness not less than 2 sm and width 15 sm cracks between which are usually closed rejkami (fig. 42). Rejki it is better to beat two nails, since. Beaten by one nail rejka it is jarred on (fig. 42, and at a strong wind the rain can get under a covering.

It is possible to do Corners of boards of a covering, so to say, "эр ѕё" (fig. 40). At a horizontal way corners of boards are cut off at an angle 45 °, and at vertical boards move out "эр ѕё". .

Both at horizontal, and at a vertical covering corners to cover with so-called angular boards easier (fig. 40, thickness of 2,0-2,5 sm and 15-20 see width

Doing a covering of boards, it is necessary to mean the following. First of all, boards should be dry. Wet and crude boards at drying are jarred on. Insufficiently dry boards need to be beaten one nail, since. Otherwise at usadke the board can burst.

Obshivochnye of a board are beaten to lining boards or to rejkam by two nails. The distance between rejkami should not be more than 70 sm (fig. 40, 41 and 42. The boards beaten by one nail, can warp and between them cracks are formed.

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