The roof garden not only has excellent cooling and heat insulation effect, but also can beautify the environment, purify the air, improve the local microclimate, enrich the city's pitching landscape, compensate for the green ground the building occupies, and greatly increase the city's green coverage rate. It is worth to promote the roof form. The success or failure of the water-repellent treatment directly affects the use effect of the roof garden and the safety of the building. Once the water leakage is found, it may be partially or completely reworked. Therefore, the treatment of the waterproof layer is the key technology of the roof garden, and it is also the issue most concerned by people. [qeekapage] Hydroelectric reform housing room Camping Light,Outdoor Light,Outdoor Camping Light,Emergency Rechargeable Searchlight Cangnan Younglite Electrical Co., Ltd. , https://www.younglitelight.com
1 Analysis of Leakage Reasons <br> Whether it is the original design of a roof garden, or the addition of a roof garden on top of the roof of an already built house, it is desirable to destroy the roof during and after construction. Waterproofing and drainage systems cause roof leaks. The reason is as follows:
1.1 Defects in the original roof waterproof layer The structural layer and the waterproof layer, even if they maintain the original practice, are generally coiled on the prefabricated hollow board, so it is still inevitable that leakage occurs at weak points such as parapets and gutters. . Especially for rigid waterproof roofs, the most serious problem is that the waterproof layer may crack and leak after construction. There are many reasons for cracking: roofing thermal expansion and contraction caused by climate change and solar irradiation; warping deformation after roof panels are subjected to stress; roofing changes caused by settlement of foundations or shrinkage of wall bearings, etc.; Material shrinkage deformation and so on.
1.2 The roof garden was damaged when the roof garden was built. The roof garden was still leaking. On the roof waterproof layer, which was more prone to water leakage, many garden works were carried out. This made it easier for the roof waterproof layer to break and cause water leakage. Even if the perforated or buried iron pieces are not pierced, if they are not carefully constructed, the waterproof and drainage structure of the roof will still be damaged, causing the roof to leak. Mounting sometimes destroys the waterproof layer. For example, a shovel used for filling may damage the waterproof layer.
1.3 Roof Garden Water Sources Water used for irrigation of various plants, pools, fountains, etc. is also used frequently, which increases the amount of water that leaks from the roof. The drainage system of the roof of a typical building does not take into account the drainage of water from plants and the drainage of water bodies needed for the construction of roof gardens. In particular, water and pool waste water contain plant roots and leaves and silt and other miscellaneous items. Drainage outlets and pipes are clogged, causing water accumulation and water leakage on the roof.
Irrespective of the factors that cause water leakage, people are often blamed on roof gardens, which has caused social resistance for the promotion of roof gardens. Therefore, planning and design, construction units, and users should all have sufficient understanding. , Dealing with waterproofing of roof gardens together.
2 Construction points and precautions 2.1 Waterproofing experiment and ensuring good drainage system The construction of the roof garden must be treated with secondary water repellency. First of all, to check the original waterproof performance: closed outlet, re-irrigation, for 96 hours (4 days and 4 nights) of the strict closed water test. Closed water test, we must carefully observe the leakage of the room, some houses closed for 3 days without water leakage, the fourth day began to leak. If you can guarantee that 96h does not leak, indicating that the roof waterproof effect. This waterproof effect also applies only to non-roofed gardens. The waterproof layer is a key technical problem to ensure that the roof does not leak, but the waterproofing and drainage of the roof are two aspects, so the drainage system of the roof must also be handled. In roof garden projects, when planting ponds, pools, and roads are to be constructed, the original roof drainage system should be followed for planning and design, and the original outlets and slopes should not be blocked, isolated, or changed. In particular, drainage pipes under the drainage layer of large planting pools should cooperate with the roof outlets, pay attention to the relevant standard deviations, and make the drainage pipes under the drainage layer of the planting tanks cooperate with the roof drainage outlets, pay attention to the relevant elevation difference, and make planting. The excess irrigation in the pool can be smoothly discharged.
2.2 It is better to remove the overhead insulation layer of the roof without damaging the original waterproof layer. When the insulation layer is taken, the original waterproof layer shall not be damaged. After cleaning, rinse and rinse to enhance adhesion. Under normal circumstances, it is not allowed to perforate holes and pipelines, embedded iron pieces and buried pillars on the completed roof protection water layer. Therefore, when building a roof garden on the roof of a newly built house, the garden design department should provide technical information on the roof garden. For example, the information on the holes to be stayed and the parts to be buried will be provided to the structural design unit, and they will reflect the relevant requirements on the construction drawings of the building structure so that the technical requirements for the roof garden can be achieved during the construction. If an additional roof garden is built on an old building, no matter what kind of roofing waterproofing layer is used, holes and holes and iron and pillars shall not be laid on the roof. Even if the general equipment and equipment can't take root on the roof, other measures can only be taken to make them "floating" on the roof.
2.3 Pay attention to the construction quality of the waterproof layer Currently, the waterproof treatment methods of the roof garden mainly include the points of rigidity and softness, and each has its own characteristics. Because the vermiculite cultivation has a good conservation effect on the roof, it is better to use rigid waterproof for the roof waterproof. It is advisable to first apply the waterproof layer of the coating film and then to make the rigid waterproof layer. The method can refer to the detailed design of the standard design. Rigid waterproof layer is mainly roofing shop 50
Waterproof: waterproof knowledge of roof garden