What are the details of roof construction?
1 thermal insulation project-the pipe root is fixed through the pipe root of the roof and the wall, and it should be packed with fine stone concrete mixed with 3% expansion agent to fix the pipe root.
2 thermal insulation project-roof exhaust duct
The exhaust duct is usually set at a distance of less than 6m, and the enclosed area of the exhaust duct is less than 36m2, and the exhaust duct is disconnected from the thermal insulation layer to the waterproof layer. The exhaust duct should be free of mortar, cement, sand and other powders to ensure the smooth discharge of gas to the exhaust pipe.
3 thermal insulation project-exhaust outlet
The exhaust outlet should be buried with an exhaust pipe, which should be set on the structural layer; Exhaust holes should be drilled in the pipe wall passing through the insulation layer, and the roof exhaust holes should be consistent in practice, neatly arranged and beautiful in appearance, and should be set at the intersection of vertical and horizontal separation joints.
4 thermal insulation engineering-exhaust port remedial method
when the original reserved exhaust pipe is polluted or damaged, it can be remedied by the way of outer casing. The casing shall be sleeved on the outer side of the rolled waterproofing membrane of the inner tube and buried downward in the roof surface.
5 slope leveling layer project-leaving frame joints
The leveling layer should leave frame joints, and the width of frame joints is generally 2mm；; The maximum spacing between vertical and horizontal frame joints of cement mortar or diluted concrete leveling layer shall not exceed 6m. Frame joints shall be filled with elastic sealing materials such as asphalt sand; Grassroots slope should be correct, smooth and bright, flatness deviation is not more than 5mm, no empty drum cracks; The positions of frame joints of waterproof leveling layer, waterproof protective layer and surface layer correspond up and down, and the reserved positions of frame joints of surface layer shall meet the acceptance specifications.
6 waterproof layer-the surface of the base course is kept dry, flat and firm, and the corner of the yin and yang angle is made into an arc. A simple method for detecting the dryness: lay the 1m2 coiled material flat on the leveling layer, let it stand for 3~4h, then open it for inspection. When there is no watermark on the leveling layer and coiled material, the basic treatment agent can be painted and laid.
1/4 1234 Next page 7 Waterproof layer-direction and location of coil roofing paving
The paving starts from the downhill slope of flowing water, and is carried out in the order of first far and then near, so that the coil length is perpendicular to the flowing water slope and overlaps with the flowing water direction; The upper and lower coiled materials shall not be vertically laid, and the coiled materials laid on the second floor must be staggered by 1/2 width with the first floor.
8 Waterproof layer-roofing membrane lap joint
When polymer modified asphalt waterproofing membrane or synthetic polymer waterproofing membrane is used, the lap joint is 8mm by full adhesion method and 1mm by empty paving method, point adhesion method and strip adhesion method. Synthetic polymer waterproofing membrane shall be overlapped by 5mm when welding method is adopted.
9 waterproof layer-non-master's roof waterproof coiled material protective layer
firstly, the surface of waterproof layer should be cleaned by applying colorant, and the surface should be dry. The colorant should be soft in color and not too heavy in color. Coil protection can also directly use the coil with aluminum foil or Shi Ying particles as the surface coil and directly as the waterproof protective layer.
1 waterproof layer-floor tile paving
This method is suitable for roofing with coiled material waterproofing. Pave cement mortar on the surface of waterproof layer for floor tile paving, pay attention to the drainage slope direction and slope of the roof during the paving process, and no water shall be accumulated at the rain mouth; To create excellence projects, it is necessary to ensure that the slope direction of roof running water is correct and there is no water accumulation; Brick rows of decorative tiles shall be neat and reasonable, without hollowing, with straight brick joints and consistent width; Drains, protrusions and other surrounding bricks are arranged neatly and beautifully.
11-tile roof-waterproof of tile roof
All corners of yin and yang and embedded tendons should be rounded in advance; Paste the additional layer at the arc and brush it tightly. Before painting, the base should be dry and smooth. The coating thickness meets the design requirements. No pollution, trampling or watering is allowed before film formation.
12-tile roof-insulation layer of sloping roof
The insulation layer is set above the waterproof layer, and the upper part is a 35mm (designed) thick C15 fine stone concrete leveling layer (equipped with? 6@5mmX6mm steel mesh is fixed with the steel bars reserved on the roof).
13-tile roof-tile hanging layer
The tile hanging layer is made of square wood, the bottom layer is lined with water, and the upper layer is lined with tile, which form a whole net and are embedded in the roof structural plate. 6 steel bar connection, hanging tile layer square wood should be treated with anti-corrosion, and the root of connecting bar should be painted tightly with paint to prevent corrosion and seepage.
14-tile roof-tile row control of flat tile roof
In order to ensure that the roof reaches the three-line standard, tiles should be pre-laid before the construction of the first row of tiles on the eaves and the last row of tiles at the roof ridge, and the adjustment range of flat tile fastening should be used to adjust the tiles in a large area. The flat-fell seam position between the upper and lower layers of flat tiles spread in a large area should be staggered by half the width of the tile (the smooth and pitted surfaces of the upper and lower layers of tiles are not allowed to be on the same line); Due to the influence of structural flanging in a small area (part), cement mortar can be used for false tile construction after plastering.
2/4 Home Page Previous Page 1234 Next Page Last Page 15-tile Roof-Tile Fixing
After finding the correct position of the first tile, use steel nails to pass through the two reserved holes and fix the tile on the tile hanger; Next, press the second tile on the surface of the first tile, and adjust the position to ensure that the overlapping ribs are fully engaged and the tiles are square, and then fix them equally.
16 waterproof structure of roof gutter, eaves gutter and cornice-the width of additional layer of coiled material waterproof layer in the gutter at the junction of gutter and roof is not less than 2mm. The waterproof layer of the coiled material should be turned up from the bottom of the ditch to the top of the ditch extension, and the coiled material should be fixed with cement nails and sealed with sealing materials; The slope of longitudinal running water in the roof drainage ditch shall not be less than 1%, and the slope within 5mm radius around the impinges mouth shall not be less than 5%. The surface of the gutter shall be smooth and beautiful, with straight lines, smooth running water and no water accumulation.
17 waterproof structure of gutter, gutter and cornice-parapet closing method
at the junction of roof and parapet, cement shall be used for kicking and waterproof exterior wall coating shall be applied. Leave expansion joints between skirting and wall surface and roof surface, and fill flexible waterproof caulking materials such as caulking ointment.
waterproof structure of p>18-day gutter, gutter and cornice-cornice structure of tile roof
The length of the cornice board protruding from the tile head of flat tile and corrugated tile should be 5~7mm, if the tile size is large, it can be appropriately increased, but not more than 1 mm.
19 Waterproof Structure of Impingement and downspouts-straight Impingement
The slope within 5mm radius around the roof straight Impingement should not be less than 5%. The surface of Impingement should be arranged neatly, with smooth jointing, no water accumulation at Impingement, and the water grate can rise and fall flexibly, thus achieving the best visual quality as a whole. Impinges koubei contact with the grass-roots level should leave a groove with a width of 2mm and a depth of 2mm, and embed sealing materials.
2 There shall be no less than one pipe clamp in each section of the exposed vertical downspouts of the downcomer and downspouts-downspouts and the drainage outlet, and the installation shall be firm; The inner diameter of downspouts should be not less than 75mm, the distance from the wall should be not less than 2mm, and the drain should be 15 ~ 2 mm from the water dustpan; Pipe clamp should be located near downspouts joint and elbow.
21 impinges mouth and downspouts-roof water dustpan practice
The water dustpan can be made of stone scraps as shown in the figure; Mortar products can also be used according to the traditional practice.
22. Roof water pipes and supports
The root of pipes shall be splayed and added with additional layers according to waterproof requirements. The coiled material shall be rolled up at least 25mm, and the upper end shall be fixed with clamps. Filling flexible waterproof caulking ointment between mortar pier and pipeline. The outer side of mortar pier can be painted with waterproof exterior wall coating according to the color and material required by design. The leveling layer sticking out of the root of roof pipes and supports should be made into a cone, and within 5mm of the root of pipes, the leveling layer on the previous page of 3/4 home page and the last page of next page should be wiped out with a frustum of a cone with a height of not less than 3mm; A groove of 2mm-2mm should be left between the pipeline and the leveling layer, and the sealing material should be embedded; Add additional waterproof layer around the root of the pipeline, the width and height are not less than 3mm, and the end of the waterproof layer in this part is tightened with metal hoop (or galvanized steel wire) and sealed with sealing material; The protective pier should cover the waterproof head, and the frame joint should be retained between the protective pier and the roof surface.
23 Roof air duct and support
At the intersection of roof flat tile and facade structure, such as exhaust duct and roof inspection hole, waterproof mortar must be used to fill and fill the gap between tile and structure (batten) in addition to using flexible coiled material matching with the roof for flooding treatment.
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