Estimate waterproofing by the square foot and system
Drop the manual spreadsheet. OneEstimate builds waterproofing estimates with square-foot takeoff for slabs, decks and walls, assemblies by system (membrane, urethane, cementitious), prices you can update in one click, and on-screen takeoff.
Create your first estimate freeStart plan from $19/mo · No credit card · Runs in your browser
Waterproofing estimating has its own headaches
Every system yields and costs differently, and prep defines the result. Here is what OneEstimate fixes.
Every system yields differently
Asphalt membrane, liquid urethane or cementitious mortar have very different yields and prices. With assemblies per system you bid each one at its real coverage.
Forgetting surface prep
Cleaning, crack repair, cants and primer often get left out and eat your margin. With assemblies that include prep you bid the whole job.
Measuring slabs and decks by hand
Pulling slab, deck and wall areas is slow and risky. Measure the surfaces on the plan and the quantities flow into your line items.
Bids that don’t look professional
A branded PDF with a per-area breakdown and total square footage wins more work than a thrown-together spreadsheet.
See OneEstimate in action
The same software thousands of builders use, with a workflow built for your trade.
Assemblies by waterproofing system
Asphalt membrane, liquid urethane, cementitious, self-adhered sheet and sealants — with material, labor, coverage per square foot and fully editable.
On-screen takeoff from plans
Upload the plan as a PDF or image, calibrate the scale once, and measure slab, deck and wall areas. Every square foot feeds its line item.
Material prices you control
Membranes, resins, primers and sealants: update the price in your database and every estimate uses the new value.
Built for waterproofing
Everything a waterproofing contractor needs to bid fast and win the job.
AI that identifies line items
Describe the scope ("800 sf deck waterproofing with urethane") and the AI proposes line items and quantities so you don’t start from scratch.
Prep included
Cleaning, crack repair, cants and primer sit inside the assembly so you bid the complete system.
Export branded PDF & Excel
Send a professional proposal with your logo in one click, or export to Excel if the client asks.
From plan to proposal in 4 steps
The same workflow contractors use after dropping the spreadsheet.
1. Upload the plan
Load the plan as a PDF or image and calibrate the scale once.
2. Measure surfaces
Trace slab, deck and wall areas directly on the drawing.
3. Build the estimate
Square footage drops into per-system assemblies; adjust coverage, coats and material price.
4. Send the proposal
Export a professional branded PDF with a per-area breakdown. Ready to win.
A bidding day: waterproofing contractor with OneEstimate
A terrace and basement need a waterproofing bid. The contractor measures slab, terrace and foundation-wall areas on the plan; OneEstimate totals the square footage by system. Each line item carries its assembly of membrane, primer, reinforcement and labor. Close the takeoff and the cost lines up.
- Slab, terrace and foundation-wall areas measured by system.
- Reusable assemblies by system type (asphaltic, cementitious, liquid).
- Membrane price goes up? Recalculate the whole project.
Illustrative walkthrough of the platform workflow.
Waterproofing line items ready out of the box
You start from a base built for waterproofing, not from scratch.
Preparation
- Surface cleaning
- Crack repair
- Cove / cant strips
- Primer
- Slope correction
Systems
- Asphalt membrane
- Liquid urethane
- Cementitious coating
- Self-adhered sheet
- Acrylic liquid membrane
Finish & details
- Perimeter sealants
- Reinforcement at joints
- Protection board
- Drains & scuppers
- Flood testing
Frequently asked questions
How do I estimate waterproofing fast without measuring areas by hand?
How do I measure the areas to waterproof (slab, terrace, walls) from a plan?
Is OneEstimate an affordable alternative for waterproofing estimating?
Can I estimate only waterproofing?
Can I bid different systems at their own coverage?
Can I measure slabs and decks on the plan?
How much does it cost?
Do I need to install anything?
What contractors say
Professionals who estimate faster and win more bids with OneEstimate.
I measure slab, terrace and foundation-wall areas in square feet on the plan. OneEstimate builds the membrane, primer and detail work by line item.
The waterproofing estimate comes out complete with material and labor. I update the membrane price once and it recalculates.
Solutions by trade
Estimate your next waterproofing job today
Create your first waterproofing estimate free, with per-system assemblies and prices you control.
Start freeStart plan from $19/mo · No credit card · Runs in your browser