What is the construction method of inverted thermal insulation waterproof roof?

Hello! Inverted waterproof and thermal insulation roof construction method is a construction method in which the thermal insulation layer is placed on the waterproof layer, and vice versa. Because the waterproof layer of the roof constructed by the traditional construction method is directly affected by the natural environment, the aging speed is fast and the service life is short, and the waterproof layer has to be completely renovated after aging and damage, which is an inevitable drawback of the traditional roof structure. With the popularization and application of new thermal insulation materials in the construction field, new roof structures are constantly emerging, and inverted waterproof thermal insulation roof is one of them. Inverted waterproof and warm roof puts the insulation layer on the waterproof layer to protect the waterproof layer from temperature difference, ultraviolet rays and external or artificial influences, thus improving the disadvantages of the traditional roof structure and effectively prolonging the service life of the waterproof layer, which has been verified by many projects and achieved good results.

1. feature

This construction method can effectively prolong the service life of waterproof layer by 30 -50 years, which is 3-5 times that of traditional roof construction method. Compared with the traditional roof, this construction method has the advantages of convenient operation, high labor efficiency and low comprehensive cost.

2. Scope of application

This construction method is suitable for all kinds of roofs, such as flat roofs and sloping roofs. Especially for areas with large temperature difference between day and night, winter and summer, and roofing projects with serious external damage of waterproof layer, its advantages are more obvious.

3. Process principle

The key to the construction principle of inverted waterproof and thermal insulation roof lies in the great difference between the thermal insulation layer above or below the waterproof layer and the natural environment.

4. Process flow and operation points

Top-down construction details

4. 1 flat roof construction method

4. 1. 1 Clean the base and level the bumps properly.

4. 1.2 The base course must be dry, and the water content should be lower than 8%. The detection method of moisture content of base course is: when there is enough sunshine at noon, take 1m× 1m coiled material and spread it on the base course, and lift it without watermark after 3-4 hours to meet the requirements.

4. 1.3 Cement mortar shall be plastered on the corner.

4. 1.4 brush base treatment agent: the base treatment agent is generally solvent-based asphalt rubber adhesive. Brush the basic treatment agent evenly, with even thickness, to form a whole layer.

4. 1.5 laying additional layer coiled material: after the primary treatment agent is dried, laying additional layer coiled material at the structural nodes according to the design requirements, and setting out according to the actual project when necessary.

4. 1.6 When hot-melt laying cushion waterproofing membrane, attention should be paid to the size and moving speed of the flame, and it is better to just melt the surface of the membrane (at this time, the temperature of asphalt should be between 200℃ and 230℃), and the distance between the flame burner and the membrane is about 0.3m If the flame is small or far away, the surface of the membrane is not melted enough, and it is not firmly bonded with the base.

4. 1.7 After the first layer of hot-melt coil is laid, hot-melt sealing shall be carried out, and the molten asphalt at the joint shall be leveled with a trowel or operation.