1 Scope of application:
1.1 Concrete roof waterproofing for industrial and civil buildings;
1.2 Renovation of old roofing waterproofing works;
2 Preparation of construction materials:
2.1 Main materials: Water emulsion neoprene asphalt waterproof coating (iron drum, net weight 200 kg; plastic drum, net weight 50 kg).
2.2 supporting materials: chemical fiber cloth or glass fiber cloth.
2.3 surface protective layer material: fine sand, mica powder, acrylic light-color heat insulation coating.
3 Construction Tools:
The main construction tools are large brown brush (plate length 24 ~ 40mm, according to the need to install a long wooden handle), long brush (long
30cm artificial brush), short hair brush, big iron drum, big broom, scissors, pressure roller and so on.
4 Construction Process:
Cationic neoprene neoprene bituminous waterproof coating, according to the waterproof requirements can be divided into: a coated glass without a glass fiber reinforced coating, a cloth coated with a sand coating, two coated with a sand coating And multi-layer glass fiber mesh coating and so on.
The thickness of various waterproof layers is shown in the following table:
Coating type No glass fiber cloth coating One cloth Two coat Two cloth Three coat Multiple glass fiber coating Thickness (mm) >0.5 >2.0 >3.0 >5.0
Note: Thickness does not include sand or other protective layer.
(clean) (arc, obtuse)
Grassroots cleanup of yin and yang corners inspection, treatment brushing enhancement coating (without stagnant water)
(after drying) (brushing evenly) (bomb line)
Details of application of layer coating (brushing uniformity) (no leaking brush) (determining brushing width)
Surface protection layer construction
4.1 Grassroots requirements and processing:
4.1.1 Requirements for the new grass-roots level: The cement mortar screed should be solid and smooth. Check with a 2m ruler. The recesses should not exceed 5mm, and change smoothly. There should be no extra space in each square meter. If it does not meet the above requirements, use a 1:3 cement mortar leveling.
Baseline cracks should be pre-repaired. If the crack is less than 0.5mm, use a dilute waterproof coating as a secondary primer. After drying, apply a few coats of water-repellent paint repeatedly. For cracks above 0.5mm, cracks should be appropriately widened. Dilution waterproof coating is applied, and after drying, a waterproof coating or caulking material is used to fill the joints. A 30-40 mm wide glass fiber mesh strip is stuck on the surface, and a waterproof coating is applied.
4.1.2 Requirements for the old grassroots: To renovate the leaking roof, it is necessary to thoroughly eradicate the waterproof layer that has been ineffective, clean the net, and expose the surface of the base layer; in addition to the repair of the rigid waterproof layer with no cracks or caulking, the crack is severe. Outside the cracks, the seams should also be properly positioned according to the leaking conditions of the roof structural features. If the rigid waterproof layer is severely damaged and the paint cannot be applied, it should be completely removed and the leveling layer re-doed.
4.2 Processing of joints and details: All kinds of structural joints, expansion joints, sub-warehousing joints, etc. shall be reinforced by caulking first. The best practice is to insert caulking paste in the joints and repeatedly squeeze them to make them compact. . The surface of the caulk should be slightly higher than the base surface. Then the surface of the caulking paste is covered with a soft polyvinyl chloride plastic film slightly larger than the slit width as a backing, and a glass fiber mesh cloth with a width of 80 to 100 mm is laid thereon, and a waterproof coating is applied at the same time. The grid cloth should be firmly attached to both sides of the seam to form a reinforced waterproof layer. The intersections of the gutters, pipe roots, rain nozzles, sunroof side seams, parapet walls, and wall edge seams should be dealt with with emphasis. The best way to accomplish this is to first embed the caulk and paste the glass fiber mesh to form a reinforcement.
4.3 The base surface should be substantially dry with a water content below 15%.
4.4 Paint Construction Steps:
4.4.1 Undercoat construction: Dilution waterproof coating is evenly applied on the base leveling layer. The best results when brushing are selected to be done in the morning and evening without sunshine, so that the paint has sufficient time to penetrate into the capillary pores of the grass roots. The adhesion of the coating to the substrate. After drying and curing, apply 1 to 2 coats of paint on it again. The thickness of the paint should be suitable and the coating should be uniform. No turbulence or accumulation can occur. This will facilitate moisture evaporation and avoid foaming. The following coating constructions were carried out according to this requirement.
4.4.2 Medium Coating Construction: The middle coating is a reinforced coating. To lay glass fiber mesh cloth, dry cloth or wet cloth can be used during construction (according to roof area, roof condition and construction staff's habits)
4.4.2.1 dry shop method:
The glass fiber mesh cloth was dry-laid on the dried primer layer, and it was fixed by sticking after flattening. When the slope of the roof is less than 10%, it can be laid parallel to the direction of the ridge and overlapped in the direction of the water flow. When the slope of the roof is greater than 10%, it is perpendicular to the direction of the ridge, and the back dominating wind direction overlaps. The longitudinal lap width of the glass fiber mesh cloth is 70 mm, and the butt width is 100 mm.
4.5.2.1 After applying two glass fiber mesh cloths with vertical lap seams, start applying waterproof paint. Brush the waterproof coating 2 to 3 times in sequence. After the coating is dry, a second layer of grid cloth is laid out according to the above-mentioned method, and the intersecting seam is to be overlapped with the first layer of grid cloth.
4.5.2.2 Brush 1 to 2 coats of paint on the second layer of grid cloth, and apply a thicker layer of paint with a rubber scraper after drying.
Thickening layer mix ratio (weight): waterproof coating: fine sand (40 mesh) = 1:1 to 1:2.
4.5.3.1 thickening layer coating preparation method: The fine sand is gradually added to the constantly stirring coating, and after the mixing is uniform, the blade coating is applied. During the use, it should be stirred frequently to prevent sedimentation of fine sand. The thickness of the thickening layer is about 1mm, and 1 kg of paint per m2. After the thickening layer is dry, the paint is applied 1 to 2 times.
4.5.4.1 During construction, attention shall be paid to the following: After the first layer of glass fiber cloth is dried, the coating shall be repaired. Scraping the glass fiber cloth with scissors shall be used to cut the air bubbles on the mesh cloth coating. Joints and edges, then brush again.
The intersection of the roof and the vertical wall should be made into an arc shape, and the paving height on the wall surface should not be less than 300mm. In the process of coating construction, in order to prevent the surface of the coating from sticking to the surface, a small amount of silt (40 mesh or more) or talc (50-100 mesh) may be sprinkled on the surface of the partial coating. Powder should be less sprinkled so as not to affect the quality of the coating.
4.4.2.2 Wet Shop Method:
On the dried base coat, apply glass fiber cloth while applying waterproof paint. For the convenience of operation, the glass fiber cloth can be rolled into a round roll and rolled. The glass fiber cloth was then evenly smoothed with a brush to remove air bubbles, and evenly brushed with a paint brush to make the glass fiber cloth firmly bonded to the base layer, and the entire glass fiber mesh was covered with the paint, and there was no risk of missing paint. Phenomenon and wrinkles. Apply paint after drying to make thicker layers and surface layers.
4.5 The practice of Erbu San Tu can be constructed by referring to the above method.
4.6 Surface protection layer construction: The surface protection layer can choose the following methods:
4.6.1 fine sand protective layer: not on the human roof, on a dry middle coating, one person paints the paint, and the other then sprinkles light-colored fine sand of less than 20 mesh or 10 to 20 mesh detective mica powder and uses glue. The roller is rolled so that the sand firmly adheres to the surface of the coating. After the coating is dry, remove unattached powder or sand and collect it for later use.
4.6.2 coloring practices: not on the roof can also use acrylic light-color heat insulation waterproof coating or polymer emulsion and titanium dioxide, aluminum powder, etc. prepared, ground into a colored coating to do the roof protection layer.
4.6.3 Laying the tile: After the paint on the top of the person's roof and dry, lay the tile according to the design requirements.
5 Quality standards:
5.1 Master Control Project:
5.1.1 The type, material, thickness of the waterproof coating and the compatibility of the supporting materials must meet the design requirements, check the factory qualification certificate, quality inspection report and on-site sampling review report.
5.1.2 The paint waterproof layer shall not have leakage or water accumulation. After rain or watering, impounding inspection.
5.1.3 The waterproof structure of the coating waterproof layer in the gutters, trenches, cornices, water fallout, flooding, deformation joints, and waterproof structures extending out of the roof pipeline must meet the design requirements. Water repellent treatment should be applied to the parts and be done. A good focus on quality inspections should also comply with relevant regulations on detailed structures. Observe inspection and inspection of hidden project acceptance records.
5.2 General Project:
5.2.1 The coating waterproof layer is bonded to the base layer and firmly fixed. The surface is even and the coating is uniform. There are no defects such as runny, wrinkle, blisters, exposed carcass, and warpage.
5.2.2 The material scattered on the waterproof layer of paint film and the protective layer of light-colored paint should be spread or brushed evenly and tightly; the insulation layer should be provided between cement mortar, block material or fine stone concrete protective layer and coil waterproof layer. Separation of the rigid protective layer shall meet the design requirements.
5.2.3 The average thickness of the coating waterproof layer should meet the design requirements, and the minimum thickness should not be less than 80% of the designed thickness. Needle test or sampling test.
6 Finished product protection:
6.1 During the construction process, the insulation, leveling layer, waterproof layer, and protective layer that have been completed should be prevented from being damaged.
6.2 When the waterproof layer is in construction, measures shall be taken to prevent contaminating the wall surface, cornices, doors and windows.
6.3 The sundries shall be cleared timely in the construction of the roof, and there shall be no debris to block the water falling mouth and oblique ditch.
6.4 The structural layers of the roof construction shall be carried out in a timely manner. In particular, the protective layer shall be made in series with the waterproof layer to ensure the integrity of the waterproof layer.
7 Safety and Environment:
7.1 The operators who participate in the construction of roofing coils must wear safety helmets and safety belts.
7.2 The roofing protection of the roof should be done during the construction of the roofing project. The ladder used for the operation of the operator should be safe and secure.
8 Precautions during construction:
8.1 The paint must be stirred well before use; the storage and transportation environment temperature should be greater than 0 °C, pay attention to the seal, the storage period does not exceed 6 months;
8.2 Do not apply below 0°C. Rainy days and sand days are not allowed to construct. Should not be constructed during summer sun exposure and late morning tide exposure;
8.3 It is forbidden to step on the waterproof layer during construction, and it is forbidden to wear spiked shoes.
8.4 After the waterproof layer is completed, a water storage test shall be carried out in accordance with the specifications (water storage height 5 to 10cm, storage time not less than 24 hours), and the protective layer shall be used after not leaking water.
9 Quality records:
9.1 Factory certification (Quality Assurance) for various materials used and retest records for the entry;
9.2 hidden construction inspection data and quality assessment data of various processes;
9.3 Transfer of data between processes;
9.4 roof storage test record;
9.5 Special construction plans and technical disclosure;
9.6 Construction Log
1.1 Concrete roof waterproofing for industrial and civil buildings;
1.2 Renovation of old roofing waterproofing works;
2 Preparation of construction materials:
2.1 Main materials: Water emulsion neoprene asphalt waterproof coating (iron drum, net weight 200 kg; plastic drum, net weight 50 kg).
2.2 supporting materials: chemical fiber cloth or glass fiber cloth.
2.3 surface protective layer material: fine sand, mica powder, acrylic light-color heat insulation coating.
3 Construction Tools:
The main construction tools are large brown brush (plate length 24 ~ 40mm, according to the need to install a long wooden handle), long brush (long
30cm artificial brush), short hair brush, big iron drum, big broom, scissors, pressure roller and so on.
4 Construction Process:
Cationic neoprene neoprene bituminous waterproof coating, according to the waterproof requirements can be divided into: a coated glass without a glass fiber reinforced coating, a cloth coated with a sand coating, two coated with a sand coating And multi-layer glass fiber mesh coating and so on.
The thickness of various waterproof layers is shown in the following table:
Coating type No glass fiber cloth coating One cloth Two coat Two cloth Three coat Multiple glass fiber coating Thickness (mm) >0.5 >2.0 >3.0 >5.0
Note: Thickness does not include sand or other protective layer.
(clean) (arc, obtuse)
Grassroots cleanup of yin and yang corners inspection, treatment brushing enhancement coating (without stagnant water)
(after drying) (brushing evenly) (bomb line)
Details of application of layer coating (brushing uniformity) (no leaking brush) (determining brushing width)
Surface protection layer construction
4.1 Grassroots requirements and processing:
4.1.1 Requirements for the new grass-roots level: The cement mortar screed should be solid and smooth. Check with a 2m ruler. The recesses should not exceed 5mm, and change smoothly. There should be no extra space in each square meter. If it does not meet the above requirements, use a 1:3 cement mortar leveling.
Baseline cracks should be pre-repaired. If the crack is less than 0.5mm, use a dilute waterproof coating as a secondary primer. After drying, apply a few coats of water-repellent paint repeatedly. For cracks above 0.5mm, cracks should be appropriately widened. Dilution waterproof coating is applied, and after drying, a waterproof coating or caulking material is used to fill the joints. A 30-40 mm wide glass fiber mesh strip is stuck on the surface, and a waterproof coating is applied.
4.1.2 Requirements for the old grassroots: To renovate the leaking roof, it is necessary to thoroughly eradicate the waterproof layer that has been ineffective, clean the net, and expose the surface of the base layer; in addition to the repair of the rigid waterproof layer with no cracks or caulking, the crack is severe. Outside the cracks, the seams should also be properly positioned according to the leaking conditions of the roof structural features. If the rigid waterproof layer is severely damaged and the paint cannot be applied, it should be completely removed and the leveling layer re-doed.
4.2 Processing of joints and details: All kinds of structural joints, expansion joints, sub-warehousing joints, etc. shall be reinforced by caulking first. The best practice is to insert caulking paste in the joints and repeatedly squeeze them to make them compact. . The surface of the caulk should be slightly higher than the base surface. Then the surface of the caulking paste is covered with a soft polyvinyl chloride plastic film slightly larger than the slit width as a backing, and a glass fiber mesh cloth with a width of 80 to 100 mm is laid thereon, and a waterproof coating is applied at the same time. The grid cloth should be firmly attached to both sides of the seam to form a reinforced waterproof layer. The intersections of the gutters, pipe roots, rain nozzles, sunroof side seams, parapet walls, and wall edge seams should be dealt with with emphasis. The best way to accomplish this is to first embed the caulk and paste the glass fiber mesh to form a reinforcement.
4.3 The base surface should be substantially dry with a water content below 15%.
4.4 Paint Construction Steps:
4.4.1 Undercoat construction: Dilution waterproof coating is evenly applied on the base leveling layer. The best results when brushing are selected to be done in the morning and evening without sunshine, so that the paint has sufficient time to penetrate into the capillary pores of the grass roots. The adhesion of the coating to the substrate. After drying and curing, apply 1 to 2 coats of paint on it again. The thickness of the paint should be suitable and the coating should be uniform. No turbulence or accumulation can occur. This will facilitate moisture evaporation and avoid foaming. The following coating constructions were carried out according to this requirement.
4.4.2 Medium Coating Construction: The middle coating is a reinforced coating. To lay glass fiber mesh cloth, dry cloth or wet cloth can be used during construction (according to roof area, roof condition and construction staff's habits)
4.4.2.1 dry shop method:
The glass fiber mesh cloth was dry-laid on the dried primer layer, and it was fixed by sticking after flattening. When the slope of the roof is less than 10%, it can be laid parallel to the direction of the ridge and overlapped in the direction of the water flow. When the slope of the roof is greater than 10%, it is perpendicular to the direction of the ridge, and the back dominating wind direction overlaps. The longitudinal lap width of the glass fiber mesh cloth is 70 mm, and the butt width is 100 mm.
4.5.2.1 After applying two glass fiber mesh cloths with vertical lap seams, start applying waterproof paint. Brush the waterproof coating 2 to 3 times in sequence. After the coating is dry, a second layer of grid cloth is laid out according to the above-mentioned method, and the intersecting seam is to be overlapped with the first layer of grid cloth.
4.5.2.2 Brush 1 to 2 coats of paint on the second layer of grid cloth, and apply a thicker layer of paint with a rubber scraper after drying.
Thickening layer mix ratio (weight): waterproof coating: fine sand (40 mesh) = 1:1 to 1:2.
4.5.3.1 thickening layer coating preparation method: The fine sand is gradually added to the constantly stirring coating, and after the mixing is uniform, the blade coating is applied. During the use, it should be stirred frequently to prevent sedimentation of fine sand. The thickness of the thickening layer is about 1mm, and 1 kg of paint per m2. After the thickening layer is dry, the paint is applied 1 to 2 times.
4.5.4.1 During construction, attention shall be paid to the following: After the first layer of glass fiber cloth is dried, the coating shall be repaired. Scraping the glass fiber cloth with scissors shall be used to cut the air bubbles on the mesh cloth coating. Joints and edges, then brush again.
The intersection of the roof and the vertical wall should be made into an arc shape, and the paving height on the wall surface should not be less than 300mm. In the process of coating construction, in order to prevent the surface of the coating from sticking to the surface, a small amount of silt (40 mesh or more) or talc (50-100 mesh) may be sprinkled on the surface of the partial coating. Powder should be less sprinkled so as not to affect the quality of the coating.
4.4.2.2 Wet Shop Method:
On the dried base coat, apply glass fiber cloth while applying waterproof paint. For the convenience of operation, the glass fiber cloth can be rolled into a round roll and rolled. The glass fiber cloth was then evenly smoothed with a brush to remove air bubbles, and evenly brushed with a paint brush to make the glass fiber cloth firmly bonded to the base layer, and the entire glass fiber mesh was covered with the paint, and there was no risk of missing paint. Phenomenon and wrinkles. Apply paint after drying to make thicker layers and surface layers.
4.5 The practice of Erbu San Tu can be constructed by referring to the above method.
4.6 Surface protection layer construction: The surface protection layer can choose the following methods:
4.6.1 fine sand protective layer: not on the human roof, on a dry middle coating, one person paints the paint, and the other then sprinkles light-colored fine sand of less than 20 mesh or 10 to 20 mesh detective mica powder and uses glue. The roller is rolled so that the sand firmly adheres to the surface of the coating. After the coating is dry, remove unattached powder or sand and collect it for later use.
4.6.2 coloring practices: not on the roof can also use acrylic light-color heat insulation waterproof coating or polymer emulsion and titanium dioxide, aluminum powder, etc. prepared, ground into a colored coating to do the roof protection layer.
4.6.3 Laying the tile: After the paint on the top of the person's roof and dry, lay the tile according to the design requirements.
5 Quality standards:
5.1 Master Control Project:
5.1.1 The type, material, thickness of the waterproof coating and the compatibility of the supporting materials must meet the design requirements, check the factory qualification certificate, quality inspection report and on-site sampling review report.
5.1.2 The paint waterproof layer shall not have leakage or water accumulation. After rain or watering, impounding inspection.
5.1.3 The waterproof structure of the coating waterproof layer in the gutters, trenches, cornices, water fallout, flooding, deformation joints, and waterproof structures extending out of the roof pipeline must meet the design requirements. Water repellent treatment should be applied to the parts and be done. A good focus on quality inspections should also comply with relevant regulations on detailed structures. Observe inspection and inspection of hidden project acceptance records.
5.2 General Project:
5.2.1 The coating waterproof layer is bonded to the base layer and firmly fixed. The surface is even and the coating is uniform. There are no defects such as runny, wrinkle, blisters, exposed carcass, and warpage.
5.2.2 The material scattered on the waterproof layer of paint film and the protective layer of light-colored paint should be spread or brushed evenly and tightly; the insulation layer should be provided between cement mortar, block material or fine stone concrete protective layer and coil waterproof layer. Separation of the rigid protective layer shall meet the design requirements.
5.2.3 The average thickness of the coating waterproof layer should meet the design requirements, and the minimum thickness should not be less than 80% of the designed thickness. Needle test or sampling test.
6 Finished product protection:
6.1 During the construction process, the insulation, leveling layer, waterproof layer, and protective layer that have been completed should be prevented from being damaged.
6.2 When the waterproof layer is in construction, measures shall be taken to prevent contaminating the wall surface, cornices, doors and windows.
6.3 The sundries shall be cleared timely in the construction of the roof, and there shall be no debris to block the water falling mouth and oblique ditch.
6.4 The structural layers of the roof construction shall be carried out in a timely manner. In particular, the protective layer shall be made in series with the waterproof layer to ensure the integrity of the waterproof layer.
7 Safety and Environment:
7.1 The operators who participate in the construction of roofing coils must wear safety helmets and safety belts.
7.2 The roofing protection of the roof should be done during the construction of the roofing project. The ladder used for the operation of the operator should be safe and secure.
8 Precautions during construction:
8.1 The paint must be stirred well before use; the storage and transportation environment temperature should be greater than 0 °C, pay attention to the seal, the storage period does not exceed 6 months;
8.2 Do not apply below 0°C. Rainy days and sand days are not allowed to construct. Should not be constructed during summer sun exposure and late morning tide exposure;
8.3 It is forbidden to step on the waterproof layer during construction, and it is forbidden to wear spiked shoes.
8.4 After the waterproof layer is completed, a water storage test shall be carried out in accordance with the specifications (water storage height 5 to 10cm, storage time not less than 24 hours), and the protective layer shall be used after not leaking water.
9 Quality records:
9.1 Factory certification (Quality Assurance) for various materials used and retest records for the entry;
9.2 hidden construction inspection data and quality assessment data of various processes;
9.3 Transfer of data between processes;
9.4 roof storage test record;
9.5 Special construction plans and technical disclosure;
9.6 Construction Log