External walls are wrapped, roof sheeting is on, and windows are fixed before the walls are closed up.
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Building Dispute Practitioners Society The single most important thing we have found at lock-up in Whittlesea is roof sheeting that overlaps the wrong way. This causes water to be pushed back up under the ridge instead of shedding away. It is not obvious from the ground and will be covered by the roof covering, which means only a close inspection catches it. The local climate means every joint must be watertight.
Annotated findings from Lock-up (pre-plaster) inspections.
1Bored piersAfter drilling and cage placement, before concrete
2Slab pre-pourThe day before pouring, before waterproofing
3FrameAfter wall frame erection and bracing, before lining
5FixingAfter joinery and doors installed, before painting
6WaterproofingAfter membrane application and prior to tiling
7Pre-handover (PCI)Two to three weeks prior to handover
21 October 2026 · 3 min read
A structural change that affects how the wall holds up above a door or window.
2 October 2026 · 3 min read
A timber pest report was written weeks after the framing stage, before the roof went on.
13 September 2026 · 3 min read
A moisture issue that is hidden until the weather changes.
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The sheets must overlap to channel water down to the gutter. If the lap is wrong, water runs back up and into the roof cavity, which is a direct path for leaks.
Yes, it stops wind driven rain and insects. The laps must be fully taped and the corners sealed so the building envelope remains weather tight.
It can drop out of the cavity or be compressed, which reduces thermal performance and creates gaps. It must be stapled or clipped in place and checked for gaps.
Yes, some trades skip back to finish earlier tasks. We check every item listed at the frame stage again to confirm it is fixed or recorded as outstanding.
Once the roof structure and cladding are on. We do not wait for plasterboard so we can check the external envelope before it is closed up.
We look at the location of pipes and wires but we do not inspect the fittings or connections inside the wall. The focus is on the structural and external components.