Waterproofing Cost Calculator

Select Waterproofing Type

You can choose:

Full Waterproofing

Full waterproofing means the whole room is covered, including all walls and floor. This is recommended for high traffic areas or where full coverage is required. By waterproofing the whole space you get full coverage, no moisture can seep into walls, floors and other structural elements.

Shower Area Waterproofing

Shower area waterproofing focuses on the area around the shower tray, 500mm beyond the tray’s edges. This is a cost-effective solution, especially for typical residential bathrooms where full room waterproofing might not be necessary. By focusing on the shower area you get sufficient protection without the need for full room treatment.

If you choose this option, please enter your shower tray size (X and Y dimensions in millimeters) and choose the tray position:

• Left Corner

• Right Corner

• Enclosed on Both Sides

• Glass on the Back

Shower Tray Position Options

Left Corner

For installations where the shower tray is in the left corner, water is directed away from sensitive areas. This configuration uses the space to the maximum and contains the water in the immediate shower area, to prevent water damage to surrounding surfaces.

Right Corner

For right corner installations, this setup optimizes the space and contains the water in the designated area. Right corner waterproofing creates a streamlined shower zone that minimizes water seepage even in small spaces.

Enclosed on Both Sides

This option is for showers that are enclosed on both sides, for a more private showering area. Both sides waterproofing contains the water in the shower and away from the open areas of the room, perfect for busy family bathrooms.

Glass on the Back

With a glass on the back, this setup gives a modern look and water is directed to the drain. For modern spaces, back waterproofing keeps the shower looking good and functional, water flows efficiently and doesn’t spread to other areas.

Excluded areas (Optional)

If there are areas in the room that do not require waterproofing (e.g., doors, windows, built-in furniture), you can exclude them:

• Click on Add Excluded Area to specify these areas.

• No excluded areas defined yet will be displayed if none are added.

Note: Excluding unnecessary areas saves material and cost.

Number of Rooms:

• Number of Rooms: Enter the number of rooms you want to include in the calculation.

Option 2: Enter Room Area (m²)

If you know the total area of your room, enter it here.

• Room Area (m²): Enter the total area in m².

• Excluded Areas (Optional): Click Add Excluded Area to specify areas that don’t need waterproofing (e.g. doors, windows, built-in furniture).

• Number of Rooms: Enter the number of rooms to include.

Option 3: Enter Exact Waterproofing Area (m²)

If you know the exact area to be waterproofed, use this option.

• Exact Waterproofing Area (m²): Enter the area to be waterproofed in m².

• Number of Rooms: Enter the number of rooms to include.

Step 2: Results

After clicking Calculate, you'll see the Waterproofing Calculation Result.

Per Room Calculations:

• Total Area per Room: The total area from your inputs (e.g. 9.00 m²).

• Excluded Area per Room: The total excluded area per room (e.g. 1.00 m²).

• Adjusted Waterproofing Area per Room: The area to be waterproofed per room, with a 10% buffer for extra material (e.g. 8.80 m²).

Total Calculation:

• Total Waterproofing Area: The total area to be waterproofed across all rooms (e.g. 8.80 m²).

• Total Cost: The estimated cost for the total waterproofing area (e.g. €299.97).

The calculations are based on your selected options and inputs. If you have chosen to waterproof only the shower area, the tool will adjust accordingly, taking into account the shower tray size and position.

Important Note: The calculated waterproofing area includes 10% extra waterproofing material to be sure you don’t run out. We recommend adding this little buffer.

Step 3: Choose Your Waterproofing Kits

Based on your calculation, you will see a list of suggested waterproofing kits for your project. Each kit shows the product name, price, coverage area, and quantity.

The kits are slightly above your calculated requirements to make sure you have enough material. You can adjust quantities or choose different kits as needed.

Add the kits to the cart individually or use "Add All to Cart" for ease. You can also download a detailed PDF report of the materials and costs by clicking "Download PDF".

Waterproofing Cost Factors

• Surface Area: The bigger the area the more material needed.

• Type of Waterproofing: Full room waterproofing or shower area waterproofing affects the amount of material and cost.

• Excluded Areas: Excluding areas that don’t need waterproofing will reduce the total cost.

• Materials Used: Higher quality waterproofing materials may cost more upfront but will last longer.

Our Waterproofing Products

We have a range of waterproofing products to suit your needs:

• Tanking Liquid: For sealing and protecting surfaces, easy to apply and great moisture protection.

• Waterproofing Membrane: An all-in-one solution that includes all sealing tapes, for membrane waterproofing on any surface.

• Sealing Tape: For sealing joints and corners, to make sure your waterproofing is complete.

• Sealing Corners: For interior walls and corners.

• Slurry: A flexible waterproofing solution for walls and floors, for all types of waterproofing projects.

• Waterproofing Kits: Complete kits that include all the necessary materials, including primer.

Benefits of Using Our Waterproofing Calculator

• Accurate Quantities: Helps you calculate the exact amount of material, including primer.

• Budgeting: Allows you to cost and stay within your budget.

• Time Saving: Simplifies the process, saves you time and effort.

• Protection First: Ensures your space is protected from moisture.

How to Waterproof Your Bathroom

Waterproofing your bathroom or wet room is key to preventing moisture penetration and water damage. Here’s how to waterproof your bathroom:

• Prepare the Surface: Clean all walls and floors of debris.

• Apply Primer: Use a primer to prepare the surface for waterproofing.

• Use Waterproofing Materials: Apply tanking liquid or waterproofing membrane to all areas that will be exposed to moisture.

• Seal Joints and Corners: Use sealing tape and sealing corners to seal joints and edges.

• Allow to Dry: Let the waterproofing materials dry as per the manufacturer’s instructions before tiling.