Installation of ROOFING TILES
1)Paving tile surface, must consider the local perennial dominant wind direction, installing direction must be against to the wind; I.e. if the dominant wind direction from left to right, when the shop is installed, paving the roof tile must choose from right to left, and if the dominant wind direction from right to left, select installing order from the left to right, to avoid an interface in the wind or water leak.
2)Check the alignment before installation. Layout the line according to the actual situation of the site. When installing the tiles, they should be horizontal and vertical. The vertical line should be placed on the sloping roof, and the intersection with the horizontal line should be vertical.
3)When installing the roofing sheet, the length of the end of the roofing sheet should not exceed 100mm, to avoid wind breaking. Moreover, the number of lock nails at the end of the roofing sheet position can be appropriately increased by 1~2 sets/meter. If necessary, a flat iron can be added to the roofing sheet surface to enhance the wind.
4)When the main tile is installed, its bottom edge should be close to the construction line and installed from one side. The installation of the first-tension tile is the most important. It must be ensured that the bottom edge of the tile is perpendicular to the vertical line of the construction and cannot be tilted. After straightening, fix the tile at the center position (wave crest) of the tile at the bottom purlin.
5)The center position (wave crest) of the tile at the bottom purlin. When installing the second tile, pay attention to the tight overlap with the first tile to ensure that the gaps are tightly occluded. Also, note that the bottom edges of the two tiles must be perpendicular to the construction line, and they are also at the bottom purlin after confirmation. The center of the tile fixes the tile, and a tile wave is overlapped between the two tiles.
6)Install the third and fourth tiles in this way. After the fourth tile is installed, check again whether the horizontal and vertical overlaps of the four tiles are tight. After confirming, install all the accessories and install them in sequence.
7)The steel purlin uses self-tapping reamed screws or stainless steel reamed screws,
and the wooden purlin uses self-tapping reamed screws. To fix a set of screws for every other tile crest, the holes should be drilled first, and then the screws should be installed and the hole diameter should be larger than the diameter of the self-tapping reamed screw (self-tapping reamed screw) by 2-3mm.
8)When installing a triangular sloping roof with four slope roofs, the first tile should be installed from the middle, and then installed on both sides. After the main tile is installed, the surplus part is cut with an electric cutting saw to facilitate the installation of various ridge tiles.
9)Ridge tile installation The installation of the ridge tile should start from one side. The first piece should be installed after cutting off the part (4/9) to avoid the overlap of the ridge tile and the main tile, causing multiple tiles at the node to overlap. The ridge tile overlaps a waveform, and the top overlap should be bonded and sealed with a special resin glue.
10)Inclined ridge tile installation The installation of the diagonal ridge tile is aligned up and down, kept in a straight line, and can be edged. That is, the intersection of the diagonal ridge tile and the main tile is cut (shaped) according to the actual situation of the site so that the diagonal ridge tile is consistent with the main tile, and then The top of the diagonal ridge tile can be drilled and installed. The side diagonal ridge tile can also be used to fix the side diagonal ridge tile on the main tile purlin. The diagonal ridge tile overlaps by 5mm. Side method, flat roofs with slopes above five floors are installed with side sloped ridge tiles.
overlap
- Due to the height of corrugated tile is lower than trapezoidal wave tile, therefore when installing corrugated wave tile, at least two waves overlapped transverses. Trapezoidal wave tile one wave overlapped transverses; Ps: if only in a wave transverse overlapping in corrugated tile, Cause water leakage easily.
- The longitudinal overlap length of the PVC roofing sheet should be greater than 250mm. It is generally recommended to lap 300mm; when longitudinally lapped, The distance between the pay-off position and the horizontal level of the outer wall is 5 – 7mm and the tile placed on the top must protrude 200mm.
Fasteners, Washers and Gaskets
- For optimal long-term maintenance-free service, We recommends the use of corrosion-resistant self-tapping reamed screws, with a 19 mm washer specified by we with profiled EPDM rubber gasket, to fasten the panel to the supports. In wash areas, extremely wet areas, or in highly corrosive environments like pig or cattle confinement, stainless steel fasteners are recommended.
- The screw can be hex-head or pan-head, self-drilling, self-tapping screw, according to the type of the supports and the method of fastener installation. Each fastener will be fitted with a 19 mm washer specified by us.
- When installing the roofing sheet with self-tapping screws, it must be pre-drilled.
- must pre-drill when installing roof panels with self-tapping screws. The diameter of the hole must be greater than 2 ~ 3mm of the screw diameter.
- The screws should be tightened moderately, without deforming the washer, squashing the gasket and distorting the panel. Careful attention should be given to assure perpendicular insertion of the fasteners.
- Excess tightening and oblique insertion will possibly distort the panel, induce undue internal stresses, leading to fracture and cracks, eventually failure.
- Never use an impact wrench/driver for fastening the UPVC roof sheet. Tighten by hand or by an adjustable torque power screwdriver.
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