Bitumen WB Bathroom
Under Screed & Tiles
Fleeced®-On Bitumen WB System – Ultimate Under-Tile Waterproofing for Bathrooms
Engineered for superior performance, the Fleeced®-On Bitumen WB System is a water-based modified bitumen waterproofing solution, specially developed for under-tile protection in bathroom wet areas. This complete system ensures a durable, flexible, and seamless barrier against water ingress, safeguarding concrete substrates from long-term damage.
✅ Bitumen WB – A water-based bitumen coating that keeps water out.
✅ Crystalline Slurry – Seals tiny cracks by forming crystals inside the concrete.
✅ Primer Bond – Helps the coating stick better to the surface.
✅ Fleece – Adds strength and helps cover cracks.
🛁 Perfect for bathrooms, toilets, and wet areas before tiling.
🛡️ Strong, flexible, and seamless protection.
🔖 Patent Pending: PI2025003564
Built to last. Easy to apply. Total peace of mind.
Build-up
Field of application
Properties - Advantages
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Under screed & tiles bathroom floor
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Small balcony under 100sft
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Planter box
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Exceptionally high elasticity and crack-bridging properties
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Excellent adhesion on various substrates
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High resistance to ponding water and abrasion
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Retains its elasticity even in very low temperatures (down to -40°C)
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Easy to apply (one-component-cures with the ambient humidity
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High chemical resistance
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Fast-drying
🛠️ Step-by-Step Installation: Fleeced®-On Bitumen System (Bathroom Under Screed & Tiles Waterproofing)
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Step 1: Surface Preparation
- Clean the entire bathroom floor to remove dust, dirt, and debris.
- Patch visible holes using non-shrink grout or tile adhesive cement.
- Ensure the surface is smooth and flat.
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Step 2: Apply Primer
- Apply Primer Bond to the entire floor slab and wall skirting
(up to 100mm high).
- Let it dry for at least 30 minutes before continuing.
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Step 3: Pipe Collar Protection (PVC Pipe Area)
- Cut fleece into a square (approx. 30cm x 30cm).
- Double-fold the fleece in half, then diagonally.
- Trim the pointed tip to create a small opening.
- Insert over the PVC pipe carefully until it fits snugly at the base.
- Paint a square area of Bitumen WB around the pipe.
- Place fleece on wet Bitumen, then immediately cover with another layer of Bitumen WB until fully sealed.
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Step 4: First Layer – Floor Area (Wet-On-Wet Method)
- Apply a stripe of Bitumen WB on the floor, slightly wider than your fleece roll.
- Immediately lay the fleece onto the wet surface.
- Immediately apply another coat of Bitumen WB on top of the fleece until fully covered.
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Step 5: Continue Floor Application
- Repeat the wet-on-wet process in stripes.
- Ensure each fleece strip overlaps the previous by 3 inches (about 7.5cm).
- At the doorstep, extend the fleece by at least 1 foot.
- Allow the whole area to dry for 1 day before proceeding to wall skirting.
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Step 6: Skirting Area Application
- Use the same wet-on-wet method for the wall skirting (minimum 100mm height).
- Apply Bitumen WB, embed fleece while wet, and cover with more Bitumen WB.
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Step 7: Final Coat
- After 24 hours of drying, apply a final full coat of Bitumen WB over the entire floor and skirting area for extra durability.
💧 Optional Water Ponding Test:
After full drying (about 2 days, weather dependent), you may perform a water ponding test to check waterproofing integrity before tiling.
