31.Roof Construction (Part 3)

Sarking

As soon as the frames are fixed the next step is to place the sarking on the sloped surface of the trusses. We decided that by using some damp proof course (blue plastic) this item could replicate the functionality of a real sarking which is to prevent rain from penetrating through.               

The plastic was stretched tightly and then stapled from the underside to the existing battens. This is done to prevent sagging of the plastic.

Students cutting the sarking

Completed sarking

Battens

The battens were placed on top of the plastic to act as a receiving surface for the tiles. (Please take note that the tiles were previously placed on thin plywood). Each batten was spaced approximately to the size of the prepared roof tile.

Completed set of battens

Student placing the first batten

30. Roof Construction (Part 2)

The Ridge

Previously the “A” frames was already prepared in advance so to complete the process we used a ridge timber to align all the trusses together. The ridge was screwed on to the A frames and tightened with wires to give extra hold to the overall structure. The 2 corners of the A frame was also reinforced with timber planks to make it more rigid. 

Ridge aligning the trusses

Extra planks at the corner of the trusses

The students then placed the fame on the beams temporarily to get the correct placement and markings to ease the process of drilling and anchoring.

Temporary placement

Markings on the beams

29.Roof Construction (Part 1)

Materials for the roof construction

The materials were mainly recycled and we tried as much as possible not to buy new items for the project, keeping it green and real man!

Students were given 10 weeks to collect and make individual roof tiles which are later merged into a complete roof. It’s more or less like a huge jigsaw puzzle that requires some tweaking and adjustment to make everything fit.

The list of materials that was required is as listed below:

1.       Lots of plastic bottles(about 50 each individual)

2.       Single layer plywood(to screw on the bottles)

3.       Various sizes of screws

4.       Concrete anchor(to anchor the A frame to beams)

5.       Plastic or DPM as sarking

6.       Spray , Paint and Industrial coating(for aesthetic and finishing)

Concrete anchor

 

  

                                     

  

Plastic bottle before cut

Plastic bottle after cut and fold

 

             
                                                        

Top side of bottles arranged

Under side of plywood