How to Measure the Terrace for Waterproofing: Step-by-Step Instructions to Estimate Your Project’s Cost
Learn How to Measure a Terrace for Waterproofing with Step-by-Step Instructions to Estimate Your Project’s Cost
The Area of a Terrace in Square Feet for Waterproofing
If you’re planning to waterproof your terrace, the very first step is to know its exact area in square feet. Correct measurements ensure you buy the right quantity of waterproofing materials, avoid unnecessary expenses, and get durable results.
Step 1: Measure the Terrace Length and Width
Most terraces are rectangular or square in shape. Use a steel tape or laser measure to note down the length and width in feet.
Example:
Length = 50 feet
Width = 25 feet
Step 2: Apply the Basic Formula
The formula for terrace area is simple:
Area (sq ft) = Length × Width
Example Calculation:
50 ft × 25 ft = 1,250 square feet
Step 3: Subtract Obstructions
Many terraces include features like water tanks, staircases, or solar panels. Measure the footprint of these obstructions and subtract them from the total area.
Example:
Staircase area = 80 sq ft
Tank base area = 20 sq ft
Net Terrace Area = 1,250 – (80 + 20) = 1,150 square feet
Step 4: Add a Safety Margin
For waterproofing, always include an extra 5–10% to cover joints, edges, and overlaps. This ensures complete coverage and prevents leaks.
Why Accurate Calculation is Important
Cost Efficiency – Prevents over-purchasing or under-purchasing waterproofing materials.
Better Planning – Helps contractors estimate labor and project time.
Long-lasting Results – Proper material coverage means stronger, leak-proof protection.
We’ve made it easy for you to get an idea of your waterproofing costs! Use our simple calculator to see estimates based on Waterseal’s latest 2025 rates. Don’t worry about the final price—we’ll confirm it after visiting your site and taking precise measurements, so you get the most accurate quote.
Waterproofing Cost Calculator
Note: The price shown includes waterproofing chemicals, other materials, labor, and a 3-year warranty.
Waterseal’s direct services are available only in Gujarat. But if you’d like to order our premium chemical, Waterseal PSv Premix, and have your painter apply it, we’ve got you covered. Use our calculator to estimate how many kgs you’ll need for your terrace and the cost, based on the latest 2025 rates.
Waterproofing Chemical Estimator
Note: The prices shown here are only for the chemical. Contractor/labour charges will be additional.
Final Thoughts
Calculating the terrace area in square feet for waterproofing is easy: measure, multiply, subtract obstructions, and add a safety margin. With accurate measurements, you can confidently plan your waterproofing project and protect your home from water damage.