Quality requirements for roofing insulation and waterproofing works

Quality requirements for acceptance works of roofing works

1. there must be no leakage or water accumulation in the waterproof layer.

2. the materials used for roofing projects shall conform to the design requirements and the quality standards.

3. leveling layer surface smooth, no crisp, sand, leather phenomenon.

4. the thickness, moisture content and apparent density of the insulation layer should meet the design requirements.

5. the construction of gutter, eaves, flashing and deformation joints should meet the design requirements.

6. The coil laying method and lapping sequence should meet the design requirements, the lapping width is correct, the seams are tight, and there should be no wrinkles, bubbles and warping edges.

7. The thickness of the waterproof coating should meet the design requirements. The coating has no cracks, wrinkles, flowing, bubbling and exposed tires.

8. the surface of rigid waterproof layer should be smooth and light. The split seam should be straight and the position is correct.

9. The sealant should be firmly bonded with both sides of the base, the sealant is smooth and straight, and there should be no cracking, bubbling or collapse.

10. The base of tile roof should be flat and firm, the tiles should be arranged neatly and straightly, the overlap should be reasonable, the seams should be tight, and there must be no incomplete tiles.

Contents of quality inspection and acceptance of roofing works

Before the construction of waterproofing engineering, it is necessary to check whether the roof engineering passes the examination of drawing, whether the contents of construction scheme or technical measures are complete, whether the working procedure is reasonable, whether the progress is scientific, whether the quality requirements are clear, whether the quality objectives are formulated, and whether the qualification grade of waterproofing professional construction team and the certificate of entry of construction personnel are examined. Check the entry of roofing materials, materials on-site appearance inspection is qualified, site sampling is in line with standards, test data is valid, can meet the design requirements; check the construction machinery and labor insurance supplies quantity and intact degree.

Before leveling layer construction, check whether the quality of structural base meets the requirements of waterproof engineering construction, whether the quality of leveling layer raw materials is qualified, whether the proportion is accurate, whether the water cement ratio and consistency are appropriate, whether the location of the grid joint template is accurate, whether the cement mortar is compact, whether the slope is accurate, whether it is carried out in time. Two times calender; surface quality check of leveling layer.

Whether the variety of insulation material is correct, whether the quality is qualified, whether the thickness of the board is accurate; whether the proportion of the whole cast-in-situ insulation layer is correct, whether the stirring is uniform, whether the degree of compaction meets the requirements; whether the thickness and the degree of compaction of the loose insulation material are the same as the parameters determined by the test; whether the thickness and the degree of compaction of the laminated insulation material are the same; Whether the paving is smooth, whether the gap between the plates is filled with the same materials, whether the joints between the upper and lower plates are staggered; whether the leveling layer and the waterproof layer are constructed in time after the construction of the insulation layer is completed, if there is rain before the covering, whether temporary covering measures are taken, and whether the moisture content of the insulation layer should be re-measured after the rain.

Before the waterproof layer is constructed, the quality of the base course (leveling layer) should be checked; the waterproof layer materials and supporting materials should be sampled and inspected to be qualified; the climatic conditions during the waterproof layer construction should be satisfied; the details of the structure should be added with additional reinforcement layer according to the requirements; whether there are elastic lines before the coil laying, the coil construction sequence, and the construction technology. Whether it is correct, whether the direction is correct, whether the bonding method meets the design requirements, whether the air on the bottom of the coil is exhausted, whether the lapping width of the coil meets the requirements, whether the coil joint is reliable, whether the seal is tight, whether the waterproof coating proportion is accurate, whether the mixing is uniform, whether the amount of each brush is appropriate, whether the coating is applied. Whether the uniformity of the brush, the number of brushes and the total dosage of the paint meet the requirements, whether the interval time between brushes is enough, whether the laying direction and lapping width of the matrix reinforcement material meet the requirements, whether the thickness of the waterproof coating meets the design requirements, whether there is an isolation layer between the rigid waterproof layer and the structural base, and whether there is a grid seam mold. Whether the position of the board is correct, whether the formwork is firm, whether the varieties and specifications of steel bars meet the design requirements, whether the spacing and position of steel bars are apricot correct, whether the proportion of fine stone concrete is accurate, whether the mixing is uniform, whether the concrete in each grid is continuously poured, whether the concrete is compacted and polished, whether the secondary calendering is carried out in time, and whether the curing is carried out. Whether the maintenance is timely and sufficient, whether the maintenance time meets the requirements, whether the surface has cracks, shelling, sand and other defects, whether the allowable deviation of surface smoothness meets the requirements.

Whether the waterproof layer has passed the acceptance test, whether the protective layer has taken measures to protect the waterproof layer during the construction; whether the light-colored coating protective layer is uniform, whether there is leakage or exposure; whether the mung bean sand, mica or vermiculite spreads evenly, whether the bond is firm; whether there is cement mortar, block or fine stone concrete protective layer and waterproof layer. Whether the isolation layer is set, whether the location of the grid joint is accurate, whether the cement mortar or concrete is compact, whether the surface is defective, whether the drainage slope of the protective layer meets the design requirements.

Whether the tiles and their supporting materials are qualified by sampling inspection, whether the quality of the base is qualified, whether the joints are reinforced or not, whether the waterproof layer is checked and accepted; whether the downstream strip and hanging strip of the flat tile roof match with the size of the material, whether the nail is flat and firm; whether the flat tile is firmly laid, whether the slope is too large, whether it is fixed or not Measures: Whether the tile surface is neat, flat and straight, whether the direction and size of the cover between the ridge tile and flat tile, between the ridge tile and flat tile are correct, whether the ridge and the inclined ridge are straight, whether the number of fixed nails is enough, whether the nail cap is exposed, whether it is close to the base, whether the pairing between the felt tiles. Whether the seams are staggered; Whether the fixing method of metal plate is correct; Whether the overlap width meets the requirements; Whether the seams between the plates are sealed; Whether the seals are tightly sealed; Whether the bolts are tightly sealed; Whether the eaves and flooding sections are straight.

Whether the waterproof layer is qualified before construction, whether the measures to protect the waterproof layer are taken; whether the quality of overhead insulation products meets the requirements, whether the roof is cleaned up before construction, whether there are strengthening measures at the bottom of the pier, whether the spacing between the piers is accurate, whether the overhead slab is paved with base slurry, whether the laying is smooth or not (3) Stability, whether the height difference between adjacent boards meets the standards, whether the board joints are colluded and compacted; whether the division and structure of the water storage area are correct; whether the location, size and elevation of drainage pipes, spillways, water supply pipes and water holes meet the design requirements; whether the drainage slope of the planting roof is accurate; whether the materials of planting layer and hydrophobic layer are correct Conforms to the design requirements, whether the location, size and elevation of the draining hole meet the design requirements.

Check roof leakage, water, drainage system is unobstructed, should be after rain or continuous watering after 2 hours. It is possible to store water for roofing with no less than 24 hours. During the inspection, the ceiling should be carefully checked. If there is leakage, the state of leakage should be recorded, the cause should be found out, and the roof should be repaired in time until there is no leakage.