Inverted Roof Insulation Waterproof Construction Technology The roof waterproofing engineering of Haidian Dong Tian An Garden is near, adopting Owens Corning Extruded Polystyrene Foam Insulation Board to modify Asphalt Coil, and cooperated with brushing Bitumen Polyurethane Waterproof Coating Layers, together constitute an inverted composite waterproof structure system, and achieved a better waterproof effect and economic benefits.
1 Basic processes The basic structural process of this type of roofing is that of Rao Steel Reinforced Concrete Flooring Base Cleaning Brushes Bitumen-Bearing Polyurethane Water-proof Coating Delamination 1 Slag Slope, Cement Mortar Leveling 4 Village Waterproof Thermal Insulation Fine Stone Reinforced Concrete Protection , 4 caulking detail processing.
The surface of cast-in-situ slabs should be solid and smooth, no floating ash, no sanding, and kept dry with a moisture content of less than 9 2 Waterproof coating construction Petroleum asphalt polyurethane waterproof coating film, using reactive two-component polyurethane coating waterproof material , The proportion of A component B = .5 weight ratio. All components are required to be accurately measured according to the mix ratio and fully mixed. The waterproof coating is applied in two passes, and the first coating may be applied after drying. Brushing should first brush the lower part of the gutter outlet. After the application of higher niches; two brushing directions should be perpendicular to each other, no leakage brush bubbles. The thickness of waterproof coating shall be 1.01. After coating is completed, attention shall be paid to the protection. 3 Looking for the slope layer and the screeding layer, use 010 cinder concrete to find the slope. The thinnest point shall be 30 legs thick, and the slope shall be considered as 3. The flat plate vibrator and iron roller are used for compaction and compaction on the surface, and the surface layer is compacted with a wooden damper.
12.5 Cement mortar leveling layer thickness 2,1 requires the use of medium sand. First apply gray cake punching ribs and pull the cable to control the drainage slope and the thickness of the screed, and then apply the reinforcement line to a large area. For the details of the pipe root of the gutter protruding roof and the internal wall of the parapet, etc., it should be made into an arc angle or a boring pier with a radius of not less than 50. The finished screed level should be smooth and flat with no sanding and obvious cracks. Phenomenon appeared, and after 24 1 watering conservation, curing time was not less than 74.
4 waterproofing layer construction (1) using hot melt method to paste, the process for the grassroots cleaning brushing the base layer treatment agent additional layer smelting material sticking area 41 villages shop hot melt sealing edge, the first Xian, the coil in the daughter The inner surface of the wall is covered with a tin plate, and the metal plate is pressed on the upper surface of the metal sheet, and the silicone seal is cleaned at the joint. The inspection and acceptance of the coating is performed on the inner surface of the wall. The dried substrate oil is allowed to dry after 8 drying.
According to the shape of the roots of the pipe, the corners of the roof, the angles of the yin and yang, etc., the shape of the pipe is cut and the corresponding shape is added to the village. Using hot-melt method to paste to the corresponding site, compaction, sealing edge angle.
At the base level, lay the reference line along the width of the web along the line parallel to the ridge line. Note that the required size of the web overlap, the size of the pre-paved position, in order to carry out large-scale paving construction.
Pay attention to the heating surface of the spray gun should be heated to and from the sentence heating sentence, to grasp the heating time, to prevent excessive overheating, coil overlap along the long side of 8, coffee, short-lapped lap 100 overlapping parts pressed firmly. The direction of the entire shop is at the height after the first low, and finally the top of the roof.
The details of the front-end processing at the front end of the corpse coiling shop shall be within 6 mm from the side of the roof of the roof of the roof of the roof of the roof of the roofing parapet, and the height of the front shall be the result. A 300 wide tin plate and a metal plate cover shall be stamped as required by the design, and may be cement nailed or The distance between the fixed nails fixed on the wall and the nail is not greater than 900. The silicone seal is applied to the upper mouth and the lap joint. On the two sides of the deformation joints, gutters were laid around the roots of pipelines, and additional layers were added according to the requirements of the code. After the construction, the roof was cleaned. After the water splashing test, no water leakage and surface defects were confirmed, and inspections were carried out by the supervising agency. Preface. 15 The insulation layer construction uses Owens Corning Extruded polystyrene foam insulation board, its specification is 245, but the waterproof layer shall not be damaged before the laying of the waterproof layer. The stacking of the insulation board shall be prohibited.
In the finished thermal insulation layer, 13 more cement mortars are used to make leveling, and 6 fine stone reinforced concrete protective layers are used to construct 2 fine stones; When the thickness 4 is poured, the vertical and horizontal spacing shall not be greater than 6, and 1 shall be provided with slits and the width shall be 20 vertical. The concrete placement in each cell shall be continuous, rolling with a homemade iron roller, and manual screeding. Before the initial setting of the concrete, it was leveled with a wooden stripper, and the strips were removed in time, and the surface was collected with an iron trowel before final coagulation. The conservation period is not less than 71.
7 Caulking detail treatment The modified petroleum asphalt sealing material is used for caulking. Before the application of irrigation, clean up the debris in the joint, repair missing corners and small cracks, etc., and then brush the cold base oil treatment agent, until the water is heated and finally the caulking joints are processed in detail.
As the inverted roof insulation composite waterproofing system puts the key waterproof layer under the insulation layer and the fine stone concrete protection layer, it solves the long-term exposure of the waterproof layer in the traditional process. The process of installing the vent holes in the roof is required to avoid the damage of the roof waterproof layer caused by the blockage and destruction of the exhaust holes. We are committed to ensuring the quality of the surface water in the drawer surface.
Shaanxi Province No. 7 Construction Engineering Company Shanghai Branch, Cao Yazhen, 200 Shanghai slag lightweight concrete waterproof roof construction technology Lime slag, also known as coke slag roof, is a popular folk practice in North China for many years. It has both insulation and waterproof functions. Its aggregates are coal slag after combustion, with a wide range of sources and low prices. Lime turbidity density + porosity and security, the coefficient is large and its integrity is better. At the same time, the base lining insulation layer between the lime slag layer and the structural layer is isolated and able to slide relative to each other, so the roof volume expansion and contraction deformation due to temperature and shrinkage change can be mitigated and absorbed, and the roof separation pitch size can be enlarged.
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