Roof waterproofing practices

I, construction tools: gasoline torch (3.5 liters), pulleys, brushes, presses, scissors, tape measure, brooms and so on.

Second, grass-roots level: grass-roots leveling layer of cement mortar, grass-roots level must be solid and flat, there can be no loosening, drumming, surface raised or rough inequality and other phenomena, otherwise it must be dealt with.

Three, the grass-roots level must be dry, the water content is required to 9% or less, test the surface of the grass-roots level to put a piece of coil, after 3-5h, such as the basic surface of the water beads can be constructed.

Four, before the construction of the grass-roots surface should be carefully cleaned of residual cement mortar residue, dust and debris, and then brush the primer, required to paint uniformly and consistently, once coated, dry for more than 8h (depending on the temperature, not sticky feet appropriate) general dosage per square meter is 0.2-.

Fifth, complex parts of the treatment: yin and Yang corner parts should be made into a figure of eight, on the daughter wall, pipe roots, smoke pipe, exhaust holes and droplets, expansion joints and other corner parts should be made additional layer, generally 30cm wide, laps 6-8cm.

Sixth, coil paving: paving coil, before, to measure the waterproofing to be constructed area, and then according to the Material size and reasonable use of materials, from the lowest place to start paving, first coil according to the location of the right, long side left 8cm stubble, short side left 10cm stubble. Then ignite the blowtorch aligned coil bottom and grass-roots surface at the same time uniform heating (blowtorch nozzle from the coil surface of about 30cm is appropriate), to be the coil surface melting, and then rolled forward to pave the coil, and the coil compaction and flattening, stubble part of the pressure out of the melted asphalt is appropriate, rolling do not get involved in the air and foreign matter, and to prevent the skewed, drums and wrinkles. Finally, then use the torch and press the joints evenly and carefully sealed to prevent warping.

Seven, labor protection and safety: coil in the transportation and construction process to prevent hard objects choking, puncture, construction is completed to prohibit arbitrary trampling, and do a good job of using protection. Wear gloves in the construction process to avoid burns, scalds, for gasoline tanks, coil and other flammable items to be stored separately, away from sources of ignition, to prevent fires and workplace accidents