There are single-layer stone coated metal roofing sheet metal pressure plate and the metal pressure-type sandwich panels. Single-metal pressure plate is mainly used for thermal insulation requirements or no less demanding plants, warehouses; metal Pressed Sandwich With light weight, large span, structure and integration of water, construction, and other unique advantages of quick and easy In recent years, in factories, warehouses, etc. is widely used on the roof. Metal plates each area, the crest on the two plates lap, rivet connection, with the primary steel structure with screws, convenient construction. In order to improve water reliability, the two boards should be placed along the overlap at a continuous rubber seal, take down two joints should be placed two continuous rubber seal. Under the roof and gables pinch pinch, gutters and roof, etc. also should be placed on the transfer of a continuous rubber seal. Sheet metal as a waterproof layer of the board, it is absolutely impossible to leak, but the joint parts of the warpage due to materials, installation errors such as tightness, will have a gap, so that rain water into the indoor wind. Therefore, sheet metal technology, the key is waterproof rubber seal, not only to place the rubber seal, rubber seal and requires good heat aging, durable, will not be in a reasonable useful life of aging; should also be stressed that the rubber seal to continuous lap cement to avoid the use of post-contraction and pull the rubber seal or pull off.
Traditional waterproof material, such as caulking sealant (commonly known as clay) or styrene-butadiene rubber sealing adhesive tape, the useful life of approximately one year, easy to aging water leakage. These materials are difficult to adapt to the temperature difference between the stone coated steel roof, the characteristics of the deformation coefficient, can not fundamentally solve the problem of metal roof waterproof.
Taking all these factors, engineering, final selection of the pure acrylic "bass" waterproofing system. It is specially imported pure acrylic formulation and process produced environment-friendly water-based waterproof coating, has the following characteristics: 1) bond strength, tensile strength and elongation, flexibility, and the interface deformation and cracking of adaptability; 2) weather resistance, aging resistance and good corrosion resistance, aging resistance for a long time; 3) strong bonding, especially sealing, good resistance to the level of moderate to follow the performance. Pure acrylic "bass" in the stone coated steel roof waterproofing system engineering applications, to solve the interface displacement occurs due to stress or leakage risks arising out of sync problem, and its technological features mainly as follows: 1) node parts of the construction performance, the use of waterproof coating is not detailed node structure restrictions, can do any part of a seamless waterproof effect. 2) ambient temperature ≥ 5 ℃, humidity of 80% or less, can be normal construction, with a strong environmental adaptability. 3) leakage repair leaking parts just brushing twice waterproof coating can be covered, and simple construction.
Construction technology
A process
Brushing the grass-roots clean-up → → Cutting metal rust woven polyester fabric sewn elastic line → brushing → positioning "bass" primary coating → Paste → brushing sewn woven polyester fabric "bass" wetting layer coating and drying → TROWELING formation → brushing "TOP" self-repair surface coating → → project quality and acceptance.
2 points operating process
1) clean-up grass-roots level: waterproof layer on the grassroots level must be pre-construction dust, sand, debris, oil clean up, rusted areas with rust sanded clean, until the present white metal.
2) brushing the grass-roots anti-rust agent: waterproof coating prior to the construction to be rust on the metal surface treatment. Brushing, to uniform thickness, coating does not leak, do not accumulate, dry table 2 h to dry.
3) sew woven polyester fabric cut: according to technical requirements of crop size, shape, woven polyester fabric sewn right, good and classified volumes.
4) positioning elastic line: a good grass-roots anti-rust coating agent in the area pop-up control line brushing, brushing waterproof coating to ensure that when the edges tidy. Woven polyester fabric sewn lap width of not less than 100mm. Woven polyester fabric with the first test sew paved spaces, size, width of the right and then a "bass" primary paint brushing.
5) construction of waterproof coating: dip the brush method commonly used brushing waterproof coating. Brushing should be uniform, not the bubble wrap into the coating, such as case bubbles should be immediately eliminated. Should be divided according to the order of or brushing. Each seam width should be the same width woven polyester cloth, and to avoid trampling the operator just painted a good coating.
Paving woven polyester fabric sewn wet shop law (ie, side brushing side Stones). Construction, first locate a good roof, and with the brush will paint brush evenly, then place the roll seam woven polyester fabric flat on the coating surface, and gradually push the rolling Stones just brushing the coating on the surface, rolling again with a brush, then brushing on a layer of waterproof coating on it. Make sure that the seam woven polyester cloth soaked with paint, so that the upper and lower layers with good paint. To be dried, the surface under a paint brush before, again coating the front surface of the dust, debris and other clean up, also check whether there are defects in the coating before it again (such as bubbles, exposed at the end, missing brush), woven polyester sewing Are there wrinkles cloth and Alice, whether mixed with coating debris and other undesirable phenomena, if the above-mentioned problems, should be repaired first, and then under a paint coating.
The node structure waterproofing
Because stone coated steel roofing Omo color board itself has a good water resistance, and only the node positions to exist the possibility of leakage
, While node water demand a waterproof material with good weather resistance and adhesion, but also to be taken to secure the construction process.
1) The color plate lap seam roof
Color plates of metal sub-horizontal overlap and vertical overlap overlap with the roof slope, said vertical direction of the same lap lap, and the direction perpendicular to the roof slope is called the level of lap lap. Lap at the first level of the metal roof coated with a layer of "bass" primary coating, in its still wet, immediately paste 20cm wide seam woven polyester fabric, and then painted in the above "bass" wetting layer coatings in order to fully infiltrate woven seam polyester fabric, fully dry (see Figure 1). Vertical overlap of stone coated metal roofing and waterproofing at the same.
2) metal roof on the fan base (see Figure 2), vent, pipe out the roof (see Figure 3), etc.
Cut a good size, shape, woven polyester fabric sewn right after the week in the same coat of prominence "bass" primary coating, the woven polyester fabric sewn cut a good paste on it, then brushing on a layer above the "bass "wetting layer coating fully woven polyester fabric sewn infiltration, to ensure that no bubbles, no wrinkles.
3) metal roofing fasteners
With a 10 cm × 10 cm seam woven polyester fabric, the same approach as above (see Figure 4).
4) waterproof roof gutter within
Gutter welding seam, Mizuochi mouth strengthened by the above method do first waterproof layer, and then painted the entire gutter according to three practices in a cloth waterproofing, so gutter, fall-mouth to form a seamless whole water system (see Figure 5 .)
5) brushing the surface coating
Finally, make the area waterproof coat "TOP" surface coating. "TOP" of the total coated surface coating rate of 35 m / 20 L (twice brushing, to keep the total coating rate constant).
Traditional waterproof material, such as caulking sealant (commonly known as clay) or styrene-butadiene rubber sealing adhesive tape, the useful life of approximately one year, easy to aging water leakage. These materials are difficult to adapt to the temperature difference between the stone coated metal roof, the characteristics of the deformation coefficient, can not fundamentally solve the problem of metal roof waterproof.
Below 80%, can be normal construction, with a strong environmental adaptability. 3) leakage repair leaking parts just brushing twice waterproof coating can be covered, and simple construction.
edited by stone coated steel roof