How Better RFI Questions Strengthen Waterproofing Projects in NZ & AU

Why RFIs Matter More in Waterproofing Than Most Trades

In NZ construction, waterproofing is one of the most detail-sensitive trades.
But many waterproofing delays, variations, and scope blowouts stem from one simple issue:

Nobody asked the right question early enough.

Architects assume installers understand the intent.
Installers assume the plans show everything.
Builders assume waterproofers will “figure it out.”

And that’s exactly where things go wrong.

A well-timed RFI (Request for Information) can save days of delays or thousands in rework - but only if the question is clear, precise, and backed by a QS mindset.

Where Waterproofers Often Miss the RFI Opportunity

Here are the common blind spots we see across NZ projects:

1. Drawings Don’t Match Physical Site Conditions

A balcony upstand might show 150mm on drawings but only have 70mm available on site.
If this isn’t picked up early, chaos follows.

2. Details Are “Assumed” Instead of Confirmed

Things like:

• termination heights

• exact membrane type

• correct substrate prep

• compatible primer

• drainage connections
  
  

Small assumptions become big variations later.

3. Supplier Requirements Aren’t Cross-Checked

Every supplier has different:

• install methods

• compatible materials

• fall requirements

• curing times
  
  

If the RFI doesn’t align with the supplier system, the project will hit friction.

4. RFIs Are Not Structured Clearly

Vague RFIs cause vague responses.
Think of them like scope clarifiers - clarity in, clarity out.

How QS Insight Makes RFIs More Powerful

A QS-backed RFI is different because it focuses on the impact, not just the question.

✔ Clarifies the detail AND the effect on quantity

If a junction detail changes, the system build, labour, and material needs change too.

✔ Identifies where drawings contradict the real site

QS reviews look at measurement planes, sequence, verticals, hidden surfaces - things general project teams never quantify.

✔ Forces alignment between supplier, installer, and builder

One RFI can ensure all three parties follow the same detail. This reduces rework and protects everyone involved.

✔ Documents decisions before the install team arrives

Reducing “on-the-day confusion” is where waterproofers save the most time.

Examples of Smart RFIs That Improve Waterproofing Outcomes

(Not revealing internal know-how - just high-level guidance):

• “Confirm required falls for selected membrane system on balcony area Grid A3—A6. Current design fall is less than supplier minimums.”

• “Please clarify termination height at planter box edge. Architectural drawing shows 100mm, supplier detail requires 150mm.”

• “Confirm substrate moisture requirements prior to primer application. Site testing shows higher readings than design assumptions.”
  
  

These show professionalism, protect your business, and keep the project moving.

The Payoff - Faster Quotes, Fewer Variations, Better Installs

Every professional waterproofing company that consistently sends structured RFIs performs better because they:

• quote more accurately

• install with fewer surprises

• get frictionless sign-off

• maintain stronger relationships with builders

• minimise risk

• protect margin
  
  

Most importantly - it makes your team look sharp, organised, and trustworthy.

Need Help Tightening Your RFI Game?
At AQUOSYNC, we help waterproofing businesses produce QS-backed takeoffs and clarifications that eliminate errors before they reach site.
If you want clearer scopes, smarter RFIs, and stronger project outcomes -

👉 Chat with us about your next project.