How to Use Dr. Fixit 101 LW+ for Waterproofing Your Roof and Walls

Dr. Fixit 101 LW+ is a liquid waterproofing compound that is mixed with cement or concrete to reduce water absorption, cracks, and seepage. It is commonly used in roof slabs, terraces, bathrooms, water tanks, and masonry work.

Follow this step-by-step guide to use Dr. Fixit 101 correctly and get long-lasting waterproof protection.

Things You’ll Need

• Dr. Fixit 101 LW+

• Cement (OPC or PPC)

• Clean water

• Bucket or mixing tray

• Measuring cup

• Trowel / brush

• Protective gloves

Step 1: Understand Where to Use Dr. Fixit 101

Dr. Fixit 101 is used in:

• Roof slabs and terraces

• Bathrooms and toilets

• Masonry plastering

• Water tanks and sumps

• Repair works where seepage is present

It is added to cement or concrete, not applied directly as a paint.

Step 2: Clean and Prepare the Surface

• Remove loose dust, oil, grease, or algae

• Ensure the surface is clean and structurally sound

• Lightly dampen the surface before application (do not leave standing water)

Step 3: Mix Dr. Fixit 101 with Cement or Concrete

For Cement Mortar / Plaster

• Mix 200 ml of Dr. Fixit 101 with 50 kg of cement

• Add the Dr. Fixit 101 to the mixing water first

• Then mix this water with cement and sand as required

For Concrete

• Add 200 ml of Dr. Fixit 101 per 50 kg cement

• Mix thoroughly to ensure uniform distribution

Important: Do not add Dr. Fixit 101 directly into dry cement.

Step 4: Apply the Mortar or Concrete

• Apply the mixed mortar or concrete immediately

• Use a trowel to ensure even application

• Compact properly to avoid air pockets

• Finish smoothly for better waterproofing performance

Step 5: Cure the Surface Properly

• Start curing after 24 hours

• Cure with water for at least 7 days

• Proper curing is essential for waterproofing to work effectively

Step 6: Check for Leaks and Cracks

• After curing, inspect the surface

• Look for visible cracks, damp patches, or water seepage

• Repair minor cracks immediately using polymer-modified mortar

Tips for Best Results

• Always follow the recommended dosage

• Do not overdose Dr. Fixit 101

• Use fresh cement for best bonding

• Avoid application during heavy rain

• Combine with proper slope and drainage on terraces

Common Mistakes to Avoid

• Using Dr. Fixit 101 as a surface coating

• Skipping curing

• Mixing incorrect proportions

• Applying on dusty or oily surfaces

When to Use Additional Waterproofing

Dr. Fixit 101 improves concrete waterproofing, but for old terraces or severe leakage, combine it with:

• Dr. Fixit roof coatings

• Crack fillers

• Membrane waterproofing systems

Final Thoughts

Dr. Fixit 101 LW+ is a simple yet powerful waterproofing additive when used correctly. Proper mixing, application, and curing are key to ensuring long-term protection against leaks and dampness.

If you’re working on a critical waterproofing area, always consult a professional applicator for best results.