General roof waterproofing is how to do

1, roofing practices:

Cast-in-place roofing panels - 15 thick 1:3 cement mortar leveling layer - cold primer oil a three felt four oil waterproofing layer - green bean sand protective layer. Mung bean sand protective layer

2, roof waterproofing project before construction should be the grass-roots level of inspection and cleanup, found that the weak links first reinforcement, after passing the inspection before the construction of waterproof layer above.

3, in the construction of roofing waterproofing membrane layer must ensure that the grass-roots level dry otherwise it will affect the waterproofing effect, the dryness of

Test method: 1m2 coil laid flat on the leveling layer, static 3-4 hours after lifting the check, the leveling layer covering parts and the coil is not seen on the water can be paved with the coil. Here mainly elaborates on the construction of waterproofing roll-roofing.

4, waterproofing roll-roofing before construction, the first should be matched with asphalt, according to the day's workload preparation, strict measurement with scales.

5, waterproofing membrane paving construction

Coil waterproofing layer construction should be carried out after the completion of masonry, installation of equipment, pipelines and so on. Paving high and low span of the house, should be high first after the low, far first after the order of the near.

In a single span of paving, should be the first paving drainage is more concentrated parts (such as drop mouth, eaves, sloping ditch, gutter, etc.), according to the elevation to do from low to high, slope and elevation of the coil should be started from the bottom of the upward paving, so that the coil according to the direction of the water flow lap.

Coil parallel ridge paving, long side lap not less than 70mm, short side not less than 150mm, two adjacent coil short side lap joints should be staggered not less than 500mm, in order to ensure that coil lap width and paving straight, paving coil should be popped up marking line.

Slope more than 25% of the arched roof and skylight under the slope, should try to avoid short side lap.

Coil paving, leveling layer should be dry, general field test method: from evening to the next morning or in sunny days about 1-2h, paving 1 square meters of coil, such as coil on the inside without condensation that is, the leveling layer has been basically dry.

Expanded

Before the waterproofing materials into the field, supervision engineers carefully check the factory certificate of conformity, quality assurance, characteristics, etc., the technical indicators are in line with the requirements; to ensure that the product must have the certificate of use of the relevant state departments, the authentication information is complete. Random sampling for sampling and retesting before use, qualified and then reported to the supervising engineer for approval before use.

Roof waterproofing construction materials mainly elastomer (SBS) plasticizer (APP) modified bitumen waterproofing roll-roofing, polymer waterproofing roll-roofing. In the construction site, to often find construction units and suppliers of incoming materials to falsify, to fake the real, the second best and other phenomena.

In the acceptance of the main structure, pay more attention to the roof plate, daughter wall, the roof of the reserved holes in the inspection, test, often due to the roof plate up and down inconvenience, to avoid the existence of the phenomenon of inspection, management is not in place.

Cause the roof plate surface rough cracks, hole size is large, concrete structural columns, daughter wall masonry maintenance is not in place and other quality problems, supervision engineers to strengthen the control of the content does not meet the requirements of the quality standards, should be issued supervision engineer notification form for rectification, supervise the construction unit on the handover of the divisional project.

Baidu Encyclopedia - Roof Waterproofing Engineering

Baidu Encyclopedia - Roof Waterproofing Engineering Construction