Installing a timber sill

By - , Build 152

There are 10 main steps to installing timber windows in direct-fixed bevel-back weatherboards.

Steps 3–5
Step 1 Construction sequence
Step 2
Step 6
Step 7
Steps 8–10

WHILE NOT IN E2/AS1, this installation sequence for the sill of a timber window into a direct-fixed bevelback cladding system is relatively straightforward.

These are the key steps for an Alternative Solution:

  1. Turn the wall underlay into the rough opening. Remember to allow for the vertical packers at the jamb when setting out and site measuring for the windows.
  2. Fit a flexible flashing tape that is compatible with the wall underlay to the sill trimmer.
  3. Install the weatherboards.
  4. Fit the flashing support packer to the sill trimmer.
  5. Fit the vertical jamb packer where required.
  6. Insert the sill tray flashing across the full width, over tape and to jambs.
  7. Insert the window and install the air seals.
  8. Fit insulation (not shown for clarity).
  9. Line interior.
  10. Fit sill and architraves.
Step 1 Construction sequence
Step 2
Steps 3–5
Step 6
Step 7
Steps 8–10

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Steps 3–5
Step 1 Construction sequence
Step 2
Step 6
Step 7
Steps 8–10

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