With the gradual popularization of distributed photovoltaics, more and more families are installing photovoltaics on their roofs, and most of them are installed on tile roofs. There are two main issues in installing photovoltaic on tile roofs: how to fix and how to waterproof?
According to the current situation of photovoltaic installation, it can be divided into two categories: one is the roof of the villa, which is generally more standard, using a concrete frame structure, the roof is a concrete rigid waterproof layer, thermal insulation layer, and then paved Tiles. Note here that there are two types of tile laying, cement mortar pasted tiles (mortar tiles) and hanging tile fixed tiles (screw-fixed tiles).
During the site survey, a tile needs to be opened to understand the structure below. The most important point is to know the height of the recessed place of the tile to the height of the cast-in-situ concrete. This is the most suitable choice for the photovoltaic hook. The main point. As shown below:
In order to respond to various roofs, photovoltaic bracket manufacturers provide a variety of photovoltaic hooks to meet the needs of roof photovoltaic bracket installation.
Some roofs are not concrete cast-in-situ layers but are prefabricated panels. In this case, the photovoltaic bracket will be customized for the prefabricated panel roof, and the upper and lower pieces of penetrating prefabricated panels are used for fixing.
With the corresponding hooks, after fixing the hooks, use waterproof paint for waterproofing, and then cover the original tiles.
Roof waterproof coating
In addition to the roofs of villas, there are all kinds of roofs for self-built houses in rural areas. Due to the vast territory of our country, various types of tile roof construction methods have been derived according to their own conditions and climate. For these roof-mounted photovoltaics, first, understand the structure of the installed roof:
1 Look at the main beam and purlins (secondary beams) and rafters from the room. Know the distance, size, and material of these, and then decide which type of photovoltaic bracket to fix.
2 Laying gauntlets or tiles on the rafters, using plaster on the tiling boards or tiles, paving tiles on the plaster
For such tile roofs, the photovoltaic hooks are fixed to the purlins, and the hooks are then passed through the tiles to fix the guide rails for the installation components.
What should I do if it cannot be fixed on the purlin or is it not convenient? Consider using a reinforced mule to fix the hook solution.
If the above methods are not feasible, you can also consider using ridges, external walls and terraces or foundation support on the gables, and install them on tile roofs.