With the improvement of living standards, modern people pay more attention to the quality of life, so the roof design garden has become the latest roof design, in order to prevent water leakage in the future, we need to cooperate with the waterproof construction, the roof garden waterproof how to do? Let’s take a look!
How to do waterproof roof garden
1, do not damage the original waterproof layer
When building the roof garden, it is necessary to carry out secondary waterproof treatment, and implement secondary waterproof treatment. It is best to remove the overhead insulation layer of the roof first. When taking the insulation layer, it is not allowed to pry the original waterproof layer. After taking, clean and rinse to enhance adhesion. Under normal circumstances, it is not permitted to drill holes and pipes and to embed iron parts and pillars in the already built roof protective water layer. Therefore, when building a roof garden on the roof of a new house, the garden design department should provide the relevant technical information about the roof garden.
2. Pay attention to construction quality
Roof garden waterproof layer is best to complete all construction at one time, so as to avoid leakage. The surface of the waterproof layer must be smooth and smooth, to be completed, brush 2 waterproof coating, in order to ensure the design and construction quality of the waterproof layer protective layer. Special attention should be paid to the anti-corrosion treatment of waterproof layer, waterproof layer on the grid seam available “a cloth four coated” cover seam, and the selection of good corrosion resistance caulking ointment. It is not suitable to plant plants with developed roots and strong erosion on the waterproof layer, such as pine, cypress and banyan tree.
3. Pay attention to the quality of materials
Should choose high temperature does not flow, low temperature does not break, should not be aging, waterproof material with good waterproof effect. Rigid multi-layer plastered cement mortar waterproof layer should be used no less than the original 325# ordinary Portland cement and expansion cement, slag Portland cement can also be used; Sand particle size 1~3mm coarse sand, sand requirements hard, rough, clean; The mix ratio of cement slurry and cement mortar should be determined according to waterproof requirements, raw material properties and construction methods, and must be strictly mastered during construction. At present, some buildings also have flexible waterproof layer, roof garden often has “three felt four oil” or “two felt three oil”, combined with PVC cement or PVC paint treatment. In recent years, some new waterproof materials have also begun to be put into use, has been put into the roof construction of EPDM coil, the use of good effect. Abroad, there are attempts to use hollow foam products as a good drainage layer and filling between the green soil layer and the roof, in order to reduce self-weight.
4, do waterproof experiment
After finishing the secondary waterproof treatment, it is necessary to check the water resistance. First, the water outlet is closed, and then the water is injected. 96 hours of strict water closure test is carried out. In the closed water test, we should carefully observe the leakage situation of the room. Some houses do not leak for 3 consecutive days, and the leakage begins on the fourth day. If you can ensure 96 hours without leakage, it shows that the roof garden waterproof effect is good.
5. Check the drainage system
Waterproof layer is the key technical problem to ensure that the roof does not leak, but also must deal with the drainage system of the roof garden. In the roof garden project, the planting pool, pool and road site should be planned and designed in accordance with the original roof drainage system, and the original drainage outlet and slope should not be blocked, isolated or changed. In particular, the drainage pipe under the drainage layer of the large planting pool should cooperate with the roof drainage, pay attention to the relevant standard deviation, so that the drainage pipe under the drainage layer of the planting pool should cooperate with the roof drainage, pay attention to the relevant elevation difference, so that the excess irrigation water in the planting pool can be smoothly discharged.
[Precautions for waterproof Construction of roof Garden]
1, do waterproof experiment and ensure good drainage system
To build a roof garden, it is necessary to carry out secondary waterproofing treatment. First of all, to check the original waterproof performance: closed outlet, then irrigated water, 96 hours (4 days and 4 nights) strictly closed water test. In the closed water test, we should carefully observe the leakage situation of the room. Some houses do not leak for 3 consecutive days, and the leakage begins on the fourth day. If you can ensure 96h no leakage, it means the roof waterproof effect is good. This waterproof effect is also only applicable to non-roof garden situations. Waterproof layer is to ensure that the roof does not leak the key technical problem, but the roof waterproof and drainage is a two aspects, so also must deal with the drainage system of the roof. In the roof garden project, the planting pool, pool and road site should be planned and designed in accordance with the original roof drainage system, and the original drainage outlet and slope should not be blocked, isolated or changed. In particular, the drainage pipe under the drainage layer of the large planting pool should cooperate with the roof drainage, pay attention to the relevant standard deviation, so that the drainage pipe under the drainage layer of the planting pool should cooperate with the roof drainage, pay attention to the relevant elevation difference, so that the excess irrigation water in the planting pool can be smoothly discharged.
2, do not damage the original waterproof layer
The implementation of secondary waterproof treatment, it is best to remove the overhead insulation layer of the roof, take the insulation layer, shall not pry the original waterproof layer. After taking, clean and rinse to enhance adhesion. Under normal circumstances, it is not permitted to drill holes and pipes and to embed iron parts and pillars in the already built roof protective water layer. Therefore, when building a roof garden on the roof of a new house, the garden design department should provide the relevant technical information about the roof garden. If the information to be left holes and buried parts is provided to the structural design unit, and they will reflect the relevant requirements to the construction drawing of the building structure, so as to achieve the technical requirements of the roof garden in the construction of the building. If in the old building to build a roof garden, whether that approach of the roof waterproof layer, shall not be perforated in the roof, buried iron and pillar. Even ordinary equipment cannot “take root” on the roof. Other measures can only be taken to make them “float” on the roof.
3. Pay attention to the construction quality of waterproof layer
At present, the waterproof treatment methods of roof garden mainly have rigid and soft, each has its own characteristics. Because vermiculite cultivation has a good curing effect on the roof, the roof waterproof is best to use rigid waterproof. It is advisable to do the film waterproof layer first, and then do rigid waterproof layer, its practice can refer to the standard design of the structure of the detailed drawing. Rigid waterproof layer is mainly roofing board spread 50㎜ thick fine stone concrete, put two-way steel mesh sheet 1 layer (this practice is the whole building layer), the concrete can be added to the appropriate amount of micro expansion agent, water reducing agent, waterproof agent, etc., in order to improve its crack resistance, impermeability. This waterproof layer is hard, can prevent the penetration of trees and shrubs with developed roots, play the role of protecting the roof, and make the whole roof has a better integrity, not to produce cracks, and longer service life, than flexible coil waterproof layer is more suitable for the construction of roof garden. The roof should be set around the brick retaining wall, retaining wall lower drainage holes and gutter. When planting roof for flexible waterproof layer, it should also set a layer of rigid protective layer. That is to say, the roof can use 1 or more (composite) waterproof fortification, but the top one should be rigid waterproof layer, roof flood waterproof layer height should be higher than the overflow mouth 100㎜.
[Waterproof construction Technology of Roof Garden]
First, early preparation
1, first of all, the roof should be clean and smooth, if there is any floating dust or oil is the roof of the film release agent loose should be treated in time;
2, found that there are large holes and cracks in the roof, it is necessary to fill and smooth with cement mortar in time;
3, the roof watering wet, but should avoid the roof water, water will affect the later construction;
4, the roof expansion joint needs to be filled with sealant, sealant quality selection must be high quality, will not produce any problems.
Two, construction technology
step1: Pour the K11 waterproof slurry additive into a clean container and stir. While stirring, slowly add the powder into the slurry without sorting;
step2: Use a brush or a roller to dip the mixed glue on the roof for brushing, brushing must be kept uniform;
step3: After the first layer of brushing is completed, the second layer of brushing is carried out every 3 hours or so. Before doing, remember to sprinkle a little water on the first layer to wet the construction;
step4: after brushing within 24 hours prohibit trampling on the above, in rainy weather to cover a layer of protective film, so as to be able to effectively protect;
step5: After the slurry is completely dry, the soil can be filled on the roof to plant flowers, so that the waterproof roof garden is done.
Iii. Process description
The waterproof construction technology of this roof garden is relatively simple, mainly adopted K11 waterproof slurry waterproof, construction is also very convenient and fast, and waterproof layer also has very good flexibility, bonding performance is also very good, but also has very good weather resistance, also no longer need other special protective layer for protection, Visible this roof garden waterproof is really very good. If you think this is a good fit for your needs, then give it a try.
