Direct scribing
Audio for slide 4 (mp3 |6|KB)
- Use dividers or a bar scriber to scribe the outline of the main wall onto the material. Set the scriber so it marks about 10 to 20 mm in from the edge of the sheet. Make sure you hold the scriber at right angles to the sheet while you're marking the line.
- Cut along the scribed line with a knife. Then move the piece back into place against the main wall and line up the pencil marks.
Audio for slide 5 (mp3 |6|KB)
- Trim the 'factory edge' off the other side to produce a clean straight edge. Draw a guide line on the subfloor with your pencil held firmly while it follows the edge of the sheet. Then put a cross line from the edge of the material to the subfloor.
- Pull the piece away from the end wall until it lies flat on the floor. Make sure the edge stays aligned with the long line you've drawn on the subfloor.
Audio for slide 10 (mp3 |6|KB)
Pattern matching
To pattern-match a second piece of material beside the first piece, use the three-wall scribe technique.
Trim off the factory edge of the first piece where the seam will be. Then bring the second piece into the room.
Put it in place with its inside edge overlapping the first piece and the other edge against the main wall (running lengthwise).
Make sure the overlap is equal for the entire length of the seam.
Audio for slide 11 (mp3 |6|KB)
To find the scribe setting for the main wall, subtract the width of the offcut that you'll trim off the inside factory edge.
For example, if the 'equal overlap' at the seam is 70 mm and the offcut is 10 mm, the scribe setting should be 60 mm.
This means that you will still have a 10 mm overlap at the seam when you pull the material back to the wall once it has been cut.
For example, if the 'equal overlap' at the seam is 70 mm and the offcut is 10 mm, the scribe setting should be 60 mm.
This means that you will still have a 10 mm overlap at the seam when you pull the material back to the wall once it has been cut.
Learning activity
Audio 12 (mp3 |6|KB)Do your own research to find answers to the following questions. You can ask your supervisor or look up the installation guidelines from one of the manufacturers.
- Why should you trim off the factory edge from both sheets before you join them side by side?
- What sized roller should you use to roll out the sheets after they have been stuck down?
Go to Pattern scribing
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