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  4. Several construction schemes of color st...

Several construction schemes of color steel roof waterproofing

When there is a leak in the roofing project, we must first analyze where the leak is, because you know that the waterproof plugging construction also needs to be treated right! Today we will analyze how to analyze the leakage of the roofing project and how to control it!

1. Roof panel leakage

(1) Reason:

① Poor quality of precast or cast-in-place reinforced concrete slabs with micro-pore penetration phenomenon;

②The roof panel is cracked;

③ Poor adhesion, blistering and damage of waterproof coating;

④The waterproof coating of the roof is not good enough, and it will be pulled or cracked due to the aging of the waterproof coating.

(2) Leakage prevention measures:

① Partially clean the surface of the damaged old waterproof layer to completely remove all debris and dust. When painting, choose the same waterproof coating as the old waterproof layer or paint the same waterproof coating with good adhesion to the old waterproof layer, and also need to add fiber cloth to strengthen;

②It is necessary to thoroughly remove the old waterproof layer to expose the roof structure layer or leveling layer, and also to seal the cracks according to the seam sealing method of the board surface and wall wall seepage and leakage prevention measures, and fill the seam or fill the seam with the seam method. Apply a waterproof coating and reinforce with fiber paper cloth within a certain area.

2. Leakage at indirect joints of prefabricated roof panels

(1) Reason:

① The tiling of the reinforced concrete light roof is poorly installed and improperly lapped; if it is a hollow slab or a large roof slab, the fine stone concrete and mortar between the slabs may not be tightly packed;

②Due to various reasons, the roof panel displacement caused cracks;

③ The waterproof coating and caulking material are not stretchable enough to be cracked or pulled off;

④ The poor construction quality of the waterproof coating and caulking material leads to blistering, delamination, and damage of the waterproof coating, and the caulking material does not adhere well or falls off;

⑤ Or the aging and cracking of waterproof coating and caulking material.

(2) Leakage prevention measures:

①The roof tile of the light roof can be correctly installed and reinforced; if it is a leaking overlap, it is filled with caulking material; if it is externally brushed for waterproofing and fiber cloth, it needs to be reinforced waterproof layer;

②If the joints such as hollow slab roofs are leaking, the following methods should be used: remove the waterproof coating and insulation layer of this part, the old caulking material needs to be dug out and thoroughly cleaned; if the part is not filled with the caulking material, it must be Cut a 20×20mm V-shaped seam along the crack; scrape and fill the elastic caulking material after removing the dust; also need to brush the surface of the seam with waterproof coating and fiber cloth strips to make a two-layer reinforced layer.



Several construction schemes of color steel roof waterproof_roof waterproof, roof waterproof phone, roof waterproof quote, professional roof waterproof,
1. Dismantle the existing leveling layer, cushion layer, etc. to the floor structure layer and move the residual mud to the designated location.

2. Look for the existing leaking water cracks on the floor slab, the joints of the parapet wall, the floor drain and the circumference of the pipe, etc., and drill a “V” groove.

3. Clean the joints and cracks and other weak positions, and focus on plugging and strengthening the structure.

4. Clean the whole, apply three times to the JS composite cement-based waterproof coating for flexible and waterproof treatment, and apply the paint after each back pass when the front pass is not sticky.

5. Integral polyurethane 911 reinforces waterproof treatment.

6. Lay a fine wire mesh to prevent the cement sand protective layer from cracking.

7. Cement mortar protective layer (8-12 cm thick) shall be separated by approximately 9 cm * 5 cm with a separation gap of approximately 1 cm wide, and shall be used as a water-dispersion slope (39.1 m reserved arc-shaped ditch with a ditch width of approximately 40 cm).

8. Fill the gap with caulk.

9. Removal of residual mud and secondary manual transportation fees.



Several construction schemes of color steel roof waterproof_roof waterproof, roof waterproof phone, roof waterproof quote, professional roof waterproof,
Roof waterproofing steps
1. First make basic preparations.
2. Clean the base layer, and clean up the dust and building debris on the surface of the base layer that has passed the inspection before construction.
3. Brush the base layer treatment agent, polymer modified bitumen coil construction, and use it according to the product instructions. The base layer treatment agent is to add neoprene asphalt adhesive to industrial gasoline to dilute, stir evenly, and use a long roller brush to evenly paint On the surface of the base layer, after 4 hours at room temperature, the roll material is applied.
4. Construction of additional layer. Generally, the hot melt method uses modified asphalt coiled material to construct the waterproof layer. Before the construction of the waterproof layer, the additional layer should be made in the details such as parapet, water drop, pipe root, cornice, yin and yang corner. The additional range should meet the design requirements. .
5. Paving rolls.
6. Hot-melt edge-sealing. Heat the overlap of the coils with a spray gun. While hot, bond the two firmly. Extruding asphalt at the edges. The end ends are tightly filled with sealing paste.
7. Water storage test of the waterproof layer. After the waterproof layer of the coil material is completed, confirm that the method meets the design requirements, block all rainwater outlets, and then irrigate the water. The water level should be 20㎜ above the roof height. Observe carefully after 24h, especially the pipe Roots, air duct roots, no leakage or leakage are qualified, otherwise rework should be carried out.
8. Inspection, after the construction of the coiled material waterproof layer is completed, after the foreman's self-inspection is qualified, the project quality inspector should fill in it, and the quality acceptance record of the inspection lot. The quality inspection and acceptance of the inspection lot shall be carried out by the supervision engineer (technical person in charge of the project of the construction unit) to organize the project quality inspector to carry out the inspection and signing.
9. Construction of waterproof protective layer.
10. The protection of the finished product is completed.

If you want to know more about it please do not hesitate to contact me. WhatsApp:+86-15966835076.

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