LacoSeal
lACOFIX
LacoSeal
Single-Component Flexible Cementitious Waterproofing Membrane
LacoSeal is a ready-to-mix, polymer-modified cementitious waterproofing coating for terraces, bathrooms, balconies, wet rooms
and other suitable masonry surfaces. Applied in two or more coats, it forms a continuous protective layer below the final finish. Proper substrate preparation, corner detailing, coat thickness and curing are essential to the system performance.
KEY FEATURES
Why Choose LacoGrout?
- Single-component powder system - add water only.
- Flexible coating designed to bridge fine static cracks.*
- Seamless membrane without sheet overlaps.
- Good adhesion to prepared concrete, plaster and masonry.
- Suitable for wet-area, terrace and under-tile applications.
- Low-odour, water-based mixing system for normal building work
APPLICATIONS
Where to Use
- Terraces and roofs below the final protection layer
- Bathroom and toilet floors and wall upturns.
- Balconies, planters and exposed wet zones.
- Water tanks and water features only where the required approval and test data is available.
- Basement and retaining-wall waterproofing as part of the suitable project system.
- Under-tile waterproofing in wet rooms.
Coverage & Pack Size
Use approximately 1.0-1.2 kg/m² per coat. Typical planning quantity: bathroom 2.0-2.4 kg/m² for two coats; terrace 2.0-3.6 kg/m² for two or three coats; pools or tanks require a project-specific system and quantity check.
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Parameter
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Typical Value
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|---|---|
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Coverage per coat
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Approx. 1.0-1.2 kg/m²
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Recommended coats
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2-3 coats depending on application
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Dry film thickness per coat
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Approx. 0.5-0.6 mm
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Water demand
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300-350 ml clean water per kg
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Pot life
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Approx. 60 minutes at 27°C
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Overcoat time
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Approx. 4-6 hours at 27°C
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Full cure / ponding test
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7 days
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Crack bridging
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Target >0.5 mm at 23°C*
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Tensile bond strength
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Target >0.5 N/mm²*
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Elongation at break
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Target >30%*
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Water tightness
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No penetration at 0.5 bar*
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Shelf life
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12 months in sealed packaging
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APPLICATION GUIDE
How to Apply
01
Prepare the substrate
The surface must be sound, clean and free from dust, oil, grease, loose material and previous coatings that may reduce bond. Repair cracks wider than 0.5 mm with a suitable repair material. Pre-wet absorbent cementitious surfaces to saturated-surface-dry
condition.
02
Detail corners and junctions
Strengthen internal corners, pipe entries, drain zones and wall-floor junctions with 100 mm polyester fabric embedded into the first
fresh coat where the application needs reinforcement.
03
Mix to a smooth slurry
Add 300-350 ml clean water per kg of powder and mix slowly for 3-5 minutes. Let the mix stand briefly and remix. Mix only the
amount that can be used within the pot life.
04
Apply the first coat
Brush, broom or roll the coating evenly at about 1.0-1.2 kg/m². Work the material into pinholes and surface irregularities. Do not leave weak, thin patches.
05
Apply subsequent coats
After the first coat is touch-dry, generally after 4-6 hours, apply the second coat in a perpendicular direction. Apply a third coat only where the specified system calls for it.
05
Cure and test
Allow the membrane to cure fully. Before tile fixing or final protection, perform a 48-hour ponding test after the recommended cure period where the project demands it
PRODUCT FAQS
Frequently Asked Questions
How do I waterproof a terrace?
Clean and repair the substrate, reinforce critical corners and drain areas, then apply LacoSeal in the specified two or three coats. Complete a ponding test after full cure before tiling or laying the final protective layer.
Can LacoSeal be used under bathroom tiles?
Yes, it is intended for wet-area waterproofing below tiles. Coat the floor and carry the membrane up the wall in the required wet zone height before fixing tiles.
How many LacoSeal bags are needed for a 100 m² terrace?
Do not claim or use it for potable-water contact unless your approved formulation, test report and applicable local requirement support this specific use.
Can it be used for drinking-water tanks?
For two coats at 1.0-1.2 kg/m² per coat, plan approximately 200-240 kg, or 10-12 bags of 20 kg. Add quantity for detailing, wastage and any third coat.
Need LacoSeal - Waterproofing Membrane?
Talk to Lakshmi ConChem Industries for dealer availability, project supply, and product guidance.