New build ยท 10 Year Structural Warranty
Havenfield Road, High Wycombe
Four flats in a two-storey residential building for a repeat client on Havenfield Road, High Wycombe.
- 4 homesScheme
- 9Inspection visits recorded
- 5Build stages logged
Inspection record
The build, stage by stage
Each stage was seen before it was covered up. This is the record the warranty is built on.
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Stage 1
Foundations
Piling and the ring beam were complete, with a radon barrier in position and taped to the sub base membrane.
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Stage 2
Walls
The ground floor superstructure went up on a sole plate with a damp-proof course beneath it.
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Stage 3
Roof
The roof went on over the frame, with its design revised by the manufacturer along the way.
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Stage 4
First fix
Internal work moved on and smoke ventilation to the communal areas was covered with the site manager.
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Stage 5
Finishes
The outside of the building was finished and the last internal work was running on the ground floor.
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Signed off
Warranty certificate
With the inspections done and the completion evidence in, the 10 year structural warranty certificate could be issued.
Case study
What made this one interesting
The challenge
The building sits on piles and a ring beam, with a radon barrier taped across it to the sub base membrane. The superstructure was then built up on a sole plate with precast concrete beams. The roof design changed several times along the way.
How it was handled
We made nine visits between March 2023 and November 2025, following the job from the ring beam through the superstructure and roof to the internal work. Stages were walked with the site manager on each visit. Smoke ventilation to the communal stair was covered as the building came together.
The result
By July 2025 roof tiling was complete and the automatic opening vent to the staircase was fitted. The outside of the building was finished by November 2025, with the last internal work then running on the ground floor, and the job has since been completed.
On site
More photos from High Wycombe
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