What is the practice of roofing waterproofing membrane?
1, thermal construction technology
(1) Rema hoof fat sticking method
This is the traditional construction method, pouring hot horseshoe fat and rolling linoleum layer by layer. Scope of application: petroleum asphalt felt, three felt and four oil (two felt and three oil) laminated pavement.
(2) Hot air welding:
Hot air welding gun is used to heat the lap seam of waterproof coiled material for bonding. Scope of application: Lap seam welding of thermoplastic synthetic polymer waterproofing membrane.
(3) Hot melt method
The hot melt adhesive at the bottom of the flame heater investment mold is used for pasting. Scope of application: Lap seam welding of thermoplastic synthetic polymer waterproofing membrane.
2, cold construction technology
(1) cold bonding method
The cold asphalt binder prepared by the factory is used, and the asphalt felt is directly scraped without heating during construction. Scope of application: Three-felt and Four-oil (two-felt and three-oil) petroleum asphalt linoleum laminated pavement.
(2) Self-adhesive method
Self-adhesive waterproofing membrane is used for roof leakage maintenance, and it is bonded directly without hot work or coating bonding materials. Scope of application: self-adhesive synthetic polymer waterproofing membrane and polymer modified asphalt waterproofing membrane.
(3) Cold bonding method
The coil is bonded to the substrate using an adhesive, and the coil is bonded to the coil without heating. Scope of application: synthetic polymer coiled material and polymer modified asphalt waterproof coiled material.
What are the precautions for roofing waterproofing membrane construction?
1, the design requires that the slope layer of the roof should be laid at a gradient of 2%, so the coiled material should be laid parallel to the roof from bottom to top, and the coiled material lap must be tight, the joint should be overlapped in the direction of water flow, and the width should be not less than 50mm, and the joint between the upper and lower houses should be staggered by 250 mm. Before laying the waterproof coiled material in a large area, the additional waterproof cloth at the eaves gutter, nozzle and rain outlet should be laid from the lower part of the roof to the higher part.
2, all out of the roof pipes and other components, must open holes in the roof, in order to prevent water leakage, the coil should be turned up, plastered with cement mortar or covered with galvanized iron sheet to stop water, and the flooding height should not exceed 200 mm
3, waterproof material coil layer should be firmly bonded, no empty drum, damage, slip, become warped edge, blisters, wrinkles and other defects. After the waterproof project is completed and the water storage test is qualified, the next working procedure must be started.
4. When the roof coil meets the parapet, the coil should be rolled up along the wall, and the height should be less than 250mm, and then fixed on the wooden bricks and blocks embedded in the wall, and 1: 3 cement mortar is used as slope water.
5. The acceptance mainly focuses on the lap joint treatment between the coiled material and the nodes with complex structure. There are generally no construction problems in these places, and the waterproof layer is basically ready. Otherwise, if a place is not handled well, there will be a little leakage, a little leakage, and even the source of water channeling is difficult to find, which will bring a lot of inconvenience to future maintenance.
What is the practice of roofing waterproofing membrane? Waterproof work is very important, so the waterproof quality must be guaranteed. Therefore, the practice of waterproofing membrane must be understood during construction, and there are many details to pay attention to during construction. Therefore, if you want to do waterproofing, you should also know what matters needing attention are in the construction of roof waterproofing membrane, which will make the construction more convenient and avoid quality problems.