梯形瓦如何安装的？
Load / Span Data
The specified dim ensions do not supersede the requirem ents of local construction codes.
The maximum purlin spans are based on continuous beam calculation m odel and practical testing.
The criterion for allowed deflections is L/20.
The mentioned load refers to both wind and snow loads.
Minimum recommended slope–10% .
Panel Length
Maximum recommended panel length- 7.0 m .
Recommended longitude overlap of 200mm above purlin.
Each panel to extend 100mm over the fixings line on the purlin.
Panels should overhang Min.50mm and Max.150mm beyond the last fixings line.
Yingfa Trapezoid Roof Tile Installation Guide
Curved Roof
Minimum curving radius 16.0 m .
Positioning
Make sure the UV protected side faces out.
Side-lap of Yingfa panels m ust be installed against the prim ary direction of rain.
The Yingfa panels must be located and installed without any stresses.
Do not pull, stretch or force the sheets when the profiles are not perfectly m atched.
Fastening
Apply sealing tape along the Side-Lap m etal panel’s corrugation crests, on both sides.
Apply sealing tape over the side-sap Yingfa panel corrugation crests, where covered the Metal panel
Apply sealing tape along the bottom and top End-lap (if there is), along screws centerline or two tapes
on both sides of screw centerline.
Pre-drill 10m m holes at crests where screws are positioned.
Start fastening the screws from the first side-lap (left) through the pre-drilled holes (3).
Start fastening the screws on the lower edge purlin (End-lap), at each corrugation crest (1).
Fasten screws at the internal purlins, on every other corrugation crest, starting at the sam e side (2, 3).
Fasten screws at the upper edge purlins, at each corrugation crest, starting at the sam e side (1, 3).
Do not over-tighten!
Fasten the stitching screws at every 300-400 m m (4).
Fastening Location
Yingfa Trapezoid Roof Tile Installation Guide
Screws and Washers Specification
Crest fixing: Self-drilling 5.5m m x 65mm (2.5") screw + matched m etal crest rider (Storm washers) with
EPDM gasket.
Side Stitching: 5.5m m x 19m m (3/4”) self-tapping screw with 19 mm washer/gasket.
Important Notes
Use only Yingfa approved accessories, including EPDM rubber washers, silicones,
sealing tape, closure fixtures etc.
For clear Yingfa onto wooden purlins, apply white acrylic paint, or aluminum tape, in
order to prevent over-heating of the purlins.
Cutting Tips
Use jigsaw or circular saw with fine tooth blades.
Apply high blade speed with m oderate feeding rate.
Support the sheets near the cutting line.
Clean the dust and cutting chips after cutting.
Safety
Do not step directly on the panel.
Use stepping boards.
Work according to local safety regulations.
Handling and Storage
Store in a dry shaded place, protect from direct sunlight and rain.
Avoid covering the sheets with heat absorbing m aterials.
Avoid contact or environm ent of chem icals.
Protect the sheets from any physical dam age.
