Lacobond
lACOFIX
Lacobond
Polymer-Modified Block Jointing Mortar for AAC Blocks, Fly Ash Bricks and Concrete Blocks LacoBond is a ready-to-mix, cement-based thin-joint mortar for AAC block, fly ash brick and concrete block masonry. It is intended to replace thick conventional cement-sand joints with a controlled 2-3 mm mortar bed. This helps improve application speed,
reduce mortar thickness and create neater wall joints when the blocks are properly aligned and prepared
KEY FEATURES
Why Choose LacoBond?
- Add water only - no site mixing of cement and sand
- Thin 2-3 mm joints instead of conventional thick mortar beds.
- Designed for AAC blocks, fly ash bricks and concrete blocks.
- Smooth spreadability with a notched trowel or suitable applicator.
- Good water-retention behaviour for absorbent masonry units.
- Non-shrink performance to help reduce joint-related cracking.
- Target compressive strength: >= 7 MPa at 28 days.
APPLICATIONS
Where to Use
- AAC block wall construction
- Fly ash brick masonry.
- Concrete block masonry.
- Internal partition walls.
- External and load-bearing blockwork where the project design and block manufacturer allow thin-joint mortar
Coverage & Pack Size
Approx. 4-5 kg/m² of wall area at an average 3 mm joint thickness. Plan your quantity based on block size, wall thickness, actual
joint thickness, cut blocks and site wastage. A 40 kg bag typically covers approximately 8-10 m² of wall under normal conditions.
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Parameter
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Typical Value
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Chemical base
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Polymer-modified cementitious mortar
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Appearance
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Grey powder
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Pack size
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40 kg bag
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Coverage
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Approx. 4-5 kg/m² of wall area at 3 mm average joint thickness
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Mixing ratio
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200-250 ml clean water per 1 kg powder
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Bulk density
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Approx. 1.4-1.5 g/cc
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Compressive strength
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>= 7 MPa at 28 days*
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Tensile adhesion strength
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Target >= 0.8 N/mm²*
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Laying thickness
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2-3 mm
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Pot life
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Approx. 90 minutes at 27°C
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Shelf life
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9 months from date of production in dry sealed storage
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Application temperature
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+5°C to +40°C
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APPLICATION GUIDE
How to Apply
01
Prepare and level the first course
The base must be level, stable and clean. Set the first course accurately using conventional levelling mortar where required by the
design; thin-joint mortar is best used after the first course is level.
02
Damp the blocks if needed
AAC and other absorbent blocks should be pre-wetted to a saturated-surface-dry condition. The surface should be damp, not
dripping wet.
03
Mix LacoBond
Add 200-250 ml of clean water per kg of powder. Mix with a suitable paddle mixer for 3-5 minutes to form a smooth, lump-free
paste. Allow a short resting period and remix before use
04
Apply a thin uniform bed
Use a notched trowel or purpose-made block mortar applicator to apply a full, uniform 2-3 mm mortar layer. Ensure complete
contact on the bed and vertical joints where required.
05
Place and align blocks
Set each block with light pressure and align immediately. Correct line, level and plumb while the mortar remains workable. Remove
excess material promptly.
06
Protect the fresh wall
Do not disturb fresh blockwork. LacoBond is designed as a self-curing mortar; light mist curing in hot, dry conditions can support
optimum strength development.
PRODUCT FAQS
Frequently Asked Questions
What blocks can LacoBond be used with?
LacoBond is intended for AAC blocks, fly ash bricks and concrete blocks. Always check that the block dimensions, surface
condition and wall design are suitable for thin-joint construction.
Why use LacoBond instead of normal cement-sand mortar?
Thin-joint mortar reduces joint thickness from roughly 12-15 mm to about 2-3 mm, allowing faster and cleaner masonry work with
lower joint volume.
How much LacoBond is needed?
Use approximately 4-5 kg per m² of wall at 3 mm average joint thickness. Actual consumption depends on block size, cuts, wall
thickness and workmanship
What is the compressive strength of LacoBond?
For this website draft, LacoBond is shown as >= 7 MPa at 28 days, as requested. Keep this number only if your approved QC
result and TDS confirm it.
Need LacoBond - Block Jointing Mortar?
Talk to Lakshmi ConChem Industries for dealer availability, project supply, and product guidance.