What belongs in a balcony waterproofing quote?
Ask for the existing substrate condition, removal and preparation, membrane system, terminations, thresholds, drainage and finished surface. The quote should identify any separate tiling, plumbing or structural work and who coordinates it.
The National Construction Code refers to AS 4654 for applicable external waterproofing systems, including balconies over internal spaces. Ask the business which provisions apply to your building and how the proposed design addresses junctions and drainage.
Compare local balcony specialists
Give each business the same dimensions, access details, photos from safe positions, and any existing leak-assessment report. Ask for the proposed method, testing, cure time, warranty terms, exclusions and GST in writing.
For an apartment, tell the strata manager before commissioning work that may involve common property. The cards above are current waterproofing category matches; confirm external balcony experience and licences with each business before selecting recipients for one enquiry.
Good questions. Plain answers.
Can tiles alone waterproof a balcony?
Do not treat a tile finish as proof of a working external waterproofing system. Ask for the membrane and junction details in the proposed scope.
Does a leak below mean the membrane must be replaced?
No. Have the source investigated first; drainage, thresholds, plumbing or another part of the system may be involved.
Can I request quotes for a strata balcony?
Yes, but check who can authorise the work and access first. Notify the strata manager and share any written finding.
Written by Yamate · Sources checked 29 September 2026. This guide helps you describe and arrange work; the business assesses your property. Artwork is illustrative.
NCC: external waterproofing · NSW: strata repairs and maintenance · QBCC: standards and tolerances
Not Yamate affiliated.