Installation Guideline for installation of roof tiles with polymer sand.
A PREPARATORY WORK
A.1 The design of the roof trusses.
For rafters use timber (50×150) mm (60×180) mm. Rafters should be made of dry wood (moisture content no higher than 15%). Step between rafters must be from 600 to 1200 mm – with large roof slope wider step. If the roof angle above 45 °, the step should be (1000-1200) mm if the angle is small, the step is reduced to (800 -600) mm. The angle of inclination of the roof can be from 20 ° and above.
For protection the attic space from dust, soot, and rain and snow moisture and for ventilation of water vapor, which extend from the interior of the building, it is recommended to use a micro roofing films – “Gidrobarer D96SY”, “gidrobarer D110ST m”, “Gidrobarer DTB150” .Stack Gidrobarer to the rafters with mandatory use of counter-laths, along each girder rafters. Start laying the waterproofing film should be from the edge the eaves and up to the ridge, providing slack of the film (20-40) mm. On valleys perform overlap of film (200-300) mm and pave additional lane waterproofing membrane.Stacking gidrobareryou should keep special attention to conclusion of the film edges outwards. Gidrobarer need to undercut only after roofing.
A.3 Scheme of purlin.
For installation lathing use beams not lower second class (50-50) mm (60×40) mm, the lowermost beams of 20 mm. When placing lathing should clearly withstand step – it should be 350 mm. The layout of rows hold lacing, pulling her to outer purlins (rafters), simultaneously measuring the possible slack in each timber lathing. If necessary, enclose under it rack or bars necessary thickness aligning plane of roof slope. Docking of bars on the legs carry lathing rafters or counter-furring.
A.4 installing the lathing on the roof with external cornice.
Need to take into account the value of the step in place of the roof slope the break. This step should provide sufficient overlap of the top row on the bottom the break. Top purlin of remote cornice – fill up close to the site of the break rafters.
A.5 Installing a mansard roof lathing.
When calculating step, you need to consider the angles of inclination of the upper and lower raids and the thickness of the lathing. Easier to do it in place by adjusting.
The main features of stacking:
– The angle of the bottom row of tiles of the upper slope should be equal to the angle of inclination of the top row of the lower slope of the roof tiles;
– The bottom row of tiles of the upper slope of the roof, should provide enough overlap on the top row of the lower slope.
A.6 The rise of tiles on a roof.
Rise the roof tiles implement after installation lathing bars (from the ridge to the eaves), the roof valley, endova, and tube processing is executed, the eaves are covered with galvanized roofing sheets.
Roof tiles up to the roof and put in small batches (5-6 pieces) on all slopes to avoid uneven loading to the rafters.
B Assembling of tiles.
B.1 Installation of ordinary roof tiles.
Lay out, not fixed, the first and last rows of shingles. Fight off paint on furring every 3 … 5 vertical columns. Installation of roof tiles start with the bottom row. For fixing roof tiles on its back side from the top there is a special ledge which she clings to the purlin. Furthermore, tiles clinging to one another by means of the side locks. Formed a continuous layer and flow of the roof excluded.
Attach tiles to the sheathing with screws through special technological holes provided a structure in the upper part of the shingles. Use screws with a diameter of 4 mm and a length (45-60) mm. To prevent rust on the front side of the roof tiles, it is desirable to use anodized (stainless steel), screws or nails.
Attach tiles to the sheathing not tough – that every single tile had the opportunity of a free movement (had backlash). This will compensate for the natural expansion or contraction of tile under the influence of temperature and allow the roof to take – without any deformation of the roof – the load caused by shrinkage of the building, wind and snow pressure, temperature fluctuations.
After the conclusion of each of the third row check the horizontal and vertical symmetry. For a uniform load on the walls of the building should be made to conclude the of tile simultaneously on all the slopes of the roof. Trim of tile at joints, to perform with an electric angle grinder or hacksaw. After cutting and drilling is recommended to wet the tiles with water.
B.2 Installation of ridge tiles.
Ridge tiles to fasten with screws to the ridge board. At the same time make the gaps between the cap screws, roof ridge and the ridge board for a little backlash to compensate for thermal deformation of shingles. Screw length 65 mm. Ridge tiles should overlap the screws that attach to the crate rows of the upper row of tiles. The gap between the cut edge of the tile and ridge beam should be (15-25) mm. Valleys on the distance from the axis of the trough to cut verge tiles must be (130-150) mm for drainage of melt water, leaves.
B.3 Drainage system.
Allowed to use the organized and unorganized drainage. Water can flow directly from the roof to the ground. Unorganized drainage acquitted exclusively in small buildings with simple roof. Moreover, the elongation of the eaves should be at least 60 cm.
For organized drainage of polymer roof allowed to use as traditional systems (galvanized iron, aluminum, asbestos) and modern systems made of PVC or galvanized steel with polymer coating.
Choosing the gutter system, you must ensure that the chute will bring all the water from the roof into the gutters.
Select the required size of gutters and pipes can be in the following table:
|Roof area from which water excreted.||Corresponding standard size gutters.||Corresponding standard size drain|
|Up to 65 м2||100 мм||75 мм|
|from 65 to 100 м2||125 мм||100 мм|
|from 100 to 200 м2||150 мм||100 мм|