Protecting Profit Margins in Waterproofing: Smarter Claim & Variation Management
Every missed variation or delayed claim eats into your profit. Learn how structured post-tender QS processes help waterproofing contractors stay profitable and protected.
INSIGHTS
Sumit Kumar
10/17/2025
In waterproofing, the real challenge begins after the job is won. Even the most accurate tender can lose money if variations, site delays, or unclear instructions aren’t handled properly.
That’s where good claim and variation management becomes critical.
1. Keep Your Records Tight
Document everything - RFIs, site instructions, emails, photos. A dated photo of prep work or substrate condition can become your best defence in a dispute.
2. Identify Variations Early
As soon as work differs from the original scope, flag it. Don’t wait until the end of the job. A simple variation register can save hours of chasing later.
3. Submit Payment Claims on Time
Every project has its own claim cut-off date. Miss it once, and you’ve essentially given away cash flow. Automating reminders or using a simple QS-reviewed claim sheet keeps you on track.
4. Quantify Clearly
When submitting variations, quantify them like a QS - break down labour, materials, and time impact. Clear numbers show professionalism and speed up approvals.
5. Communicate with Confidence
Your claim process reflects your business maturity. The more structured and transparent you are, the more respect you earn from builders and PMs.
Stay in Control of Your Profits
At AQUOSYNC, we support waterproofing contractors with post-tender QS assistance - from payment claim templates to variation quantification.
Keep your cash flow predictable and your margins strong.
Get in touch today to simplify your claim process.




