Avoiding Scope Gaps - What Every Builder Should Know About Waterproofing Packages
Even well-planned builds can leak - not from the roof, but from unclear scope. Understanding where waterproofing responsibilities start and stop keeps projects on time, compliant, and conflict-free.
EDUCATIONAL
Sumit Kumar
11/14/2025
Common Scenario
A builder lines up their waterproofing subcontractor, only to realise halfway through that the upturns, terminations, or balcony junctions weren’t included in the quote. The project slows down, arguments start, and costs creep up.
QS Insight
From a Quantity Surveyor’s perspective, most waterproofing issues don’t come from bad work - they come from unclear scopes. Drawings may show general intent but lack specific system boundaries. Builders often assume “it’s covered,” while applicators quote only what’s obvious. The result? Scope gaps that lead to rework and variation disputes.
Simple Solution
Before awarding the job:
Review drawings and specs together with your waterproofing QS or supplier.
Highlight transitions and terminations on plans (e.g. wall-to-floor junctions).
Confirm written inclusions and exclusions before signing off quotes.
Request a marked-up takeoff - a visual map of what’s covered.
A clear, QS-verified scope keeps everyone aligned, avoids surprises, and ensures the builder’s schedule and budget stay intact.
Build Clarity Before You Build Walls
At AQUOSYNC, we help builders and waterproofers align their scopes early through professional takeoffs, scope markups, and clear documentation - saving time and avoiding rework later.
Connect with us to review your next project’s waterproofing scope before it turns costly.
