Ha Huang Purlin has 2 thickness that is
1. 0.55 mm. thickness purlin, compatible with normal residential building with the rafter spacing support 1.00 m in maximum
2. 0.70 mm. thickness purlin, compatible with the building in the strong wind or the structure that have the purlin structure 1.20 m.

To continue the other purlin installation, you must overlap it for 5 cm , when the overlap range is located on the rafter. When the range is not on the rafter, the overlap range is must be 20 cm and you should fix 4 screw at the end of both purlin that will be joined.

- 3 1/2" self drilling screw is used for fixing the granada roof sheet.
- 2 1/2" self drilling screw is used for fixing the ridge accessories.

1" x 2" timber

 1. unfixed the screw on the top row.
 2. Put the plastic fabrication cover on the ridge.
 3. For the first and the last sheet to be installed,insert the beneath the barge.
 4. Fixed with the screw that is unfixed.

We use 2 1/2" self drilling screw to fix the Magma concrete roof tile.

There are 2 style of Ha Huang Zedar Shake to be installed.
 1. Straight Sheet Rim   
 2. Random Overlap Sheet Rim

Not less than 25 degree

The corroshield roof sheet is painted on the back of the sheet, but Trilon G are not.

TSR is stand for Total Sun Reflective value that is indicate how many ability of the surface reflective the energy form the sun
 Ha Huang roof sheet                           TSR value (%)
 Blue - Roman tile                                   23.1
 Green - Roman tile                                 23.2 
 Cement colour-Roman tile                      34.4 
 Grey - Concrete Roof Tile                       32.7
 Orange -  Concrete Roof Tile                   29.1
 Icy Blue - Trilon Kool                             73.4
 Breezy Ivory - Trilon Kool                      70.9