At present, with the strong support of national and local government policies, distributed solar power generation systems have become more and more widely used ,it's become an important development direction in the future. However, due to the introduction of distributed solar power generation, the design and construction quality of solar panels and solar mounting brackets are uneven. The waterproof problem of solar roofs is easily overlooked. Once the waterproof layer is damaged or even waterproof, it is easy to happen. Leakage not only affects the PV system but also affects the normal use of the user's house.
As a world-leading solar mounting system manufacturer, with years of production practice experience, today we should discuss the waterproofing of solar roofing.
How to install solar brackets for waterproof?
The general principle of roof waterproofing treatment is should not be blocked, we should ensure the node can smoothly drain the water during the storm water ,and also ensure that the roof does not leak. For the case where the original roof must be damaged, it is necessary to adapt to the local conditions and handle different treatments according to different situations. Let us look at the classification below.
For new buildings with concrete flat roofs, bolts should be pre-embedded in the design of the solar mounting system, and the roof should be waterproofed according to the conventional practice. For the existing buildings, when the solar module base is set, the waterproof layer should be laid on the upper part of the base and the metal embedded parts, and sealed around the anchor bolts, and the waterproof layer is filled with waterproof sealant. In addition, an additional waterproof layer can be added under the pedestal, and even if the top of the pedestal leaks, the rain will not reach the structural layer.
Chemical anchor bolt use method
For existing buildings with concrete flat roofs, if the solar mounting brackets are fixed with chemical anchor bolts, the thickness of the protective layer or the surface layer should be confirmed first. For prefabricated floor slabs with a large bearing area per unit area, a concrete layer of a certain thickness can be cast on the roof, and the solar support is fixed by chemical anchor bolts after solidification.
For the slope roof of the overlying tile, the depth of the hole should be confirmed. After the chemical anchor bolt is fixed, the position of the bolt passing through the tile should be treated well with a waterproof sealant. The chemical anchor bolt has the advantages of large bearing capacity, anti-fatigue and aging resistance, no expansion force on the base body, no crushing stress, and therefore no adverse effect on roof waterproofing.
For metal roofing, the steel structure of the solar system needs to penetrate the original waterproof layer and the profiled steel plate to be fixed on the main steel structure of the building; and then refer to the metal roof waterproofing method for steam separation, heat preservation and waterproof treatment. The focus of the construction is to rust, seal, and apply waterproof coating to the base and the periphery.
For local leakage points of metal roofing, it should be smeared with high-quality neutral weathering sealant; for color steel plates with severe local corrosion, it needs to be replaced before installing PV modules.
Therefore, the installation design of solar modules and solar mounting bracket should not only consider sunshine and shadow, but also the issues of load bearing, drainage and waterproofing.
Above news from CHIKO Sales & Marketing department
Add: No 680 Xingwen Rd. Jiading dist. Shanghai 201801 China
Phone: +86(21) 59972267 59973712 59973713--811
Fax : +86 (21)59972938
Email: Chiko@Chikolar.com
Website: http://www.chikolar.com
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