Residential leak detection & remedial waterproofing

We are instructed by Chris Heckenberg to attend the site 3 Felton Avenue, Lane Cove north NSW, to carry out a non-invasive investigation and produce a written technical report.

This report is based visual sightings & readings taken by the technicians throughout the duration of the inspection.

This report is based visual sightings & readings taken by the technicians throughout the duration of the inspection.

After conducting visual inspection for (3) independent events, several building defects evidentially require rectifications. All (4) balconies appear to have consistent water leaks to the below units 16, 18, 24 which illustrates evidence of a failed waterproofing underlay beneath timber decking. we advise the following to be repaired:

1. Weekly/fortnightly tree debris clean to prevent blocked drains
2. All brick parapets to be rectified by elastomeric paint scheme, & colour capping flashings
3. All flashings along adjacent post rooftops to be replaced with pressurised flashings/seals.
4. All defective balconies require the removal of timber decking, replacement of existing membrane, & new installation of pedestal tiling system
5. All cantilevered slabs to be prepared/coated with a waterproofing system along with pressure seals along joints
6. Seal all capping’s to FC boards with pressure seal mechanically fixed & waterproofed with UV elastomeric paint system
7. Unit 8 – DPC injection system too bedroom 2
8. Investigate balcony door thresholds upon remediation of new membrane

Brick Parapet repairs

All parapets inspected contain high mould, efflorescence, and vegetation, which illustrates high levels of absorption. The installation of a colourbond capping is highly required as further moisture will continue to track too the below structures causing delamination, moisture ingress, deflection of substrates.

Roofing flashing repairs:

All unit separate rooftops contain only adhered flashings not recessed brickwork flashing systems. All flashings are required to be replaced with parapet flashings or overlapped flashing recessed into brickwork.

Waterproofing balconies/new flooring:

Due to the threshold balcony levels are exceeding the 100mm drop to the existing slab, we recommend the removal of the existing timber decking, install a new tile pedestal system that can match the internal finished floor level. This system will surpass any timber joist decking system and provide a more suitable maintenance scheme for cleaning. The installation of a (3) layer system sheet membrane is also advised once the existing membrane is removed.