Solid Concrete Blocks vs Red Bricks for Houses in Bengaluru

Both solid concrete blocks and good red bricks can build a sound house in Bengaluru. Blocks are uniform, so walls come out straighter with less plaster; bricks are familiar and easy to cut. What matters most is that the units meet their Indian Standard (IS 2185 Part 1 for blocks, IS 1077 for bricks) and are laid properly.

Quick definitions

Solid concrete block: a factory-made masonry unit of cement, aggregate and water with no large voids, covered by IS 2185 (Part 1), which also covers hollow blocks. Red brick: a clay unit burnt in a kiln, covered by IS 1077 for common burnt clay building bricks. Wire-cut and machine-made bricks are also red bricks; hand-moulded ones vary more.

Side-by-side comparison

Check any figure here against the datasheet your supplier gives, and ask your structural engineer about the density they have assumed in the load calculation.

What the standards say, in short

IS 2185 (Part 1) covers solid and hollow concrete masonry units for load-bearing and non-load-bearing walls and sets limits for dimensions, compressive strength, water absorption and drying shrinkage. The strength grades and limits are set in the standard itself, so ask the supplier for the batch test certificate instead of relying on a number you read online.

IS 1077 classifies common burnt clay bricks by compressive strength class and sets limits on water absorption and size tolerance. Walls in residential buildings typically use a mid-range class, and your engineer specifies which one.

The key point is not which material has a better number on paper. It is whether the batch delivered to your site meets the strength and size in the standard.

Practical points for Bengaluru

Wall thickness and carpet area

Thinner block walls can give a little more carpet area than 9-inch brick walls on a small plot. Here is the arithmetic for an illustration. Say the outer wall of a G+1 house runs 124 ft around each floor (a 28 x 34 ft outline). A 200 mm block wall is about 25 mm thinner than a 9-inch (225 mm) brick wall. 25 mm is about 0.082 ft, so the extra floor area is 124 x 0.082 = about 10 sq ft per floor, or about 20 sq ft over two floors. That is useful, but it is not a reason to choose a unit by itself. Confirm external wall thickness with your engineer before the plan is finalised.

Mortar and plaster

Block faces are flatter, so plaster is often thinner and quicker. That can save time and some material. It will not save money if block work is poor and the plaster has to hide it.

Curing and wetting

Concrete blocks need to be properly cured at the plant and should be wetted lightly before laying. Bricks are soaked before laying too. Dry units suck water out of the mortar and weaken the joint. Check this on site every day.

Conduits, pipes and fixtures

Chasing channels for electrical and plumbing lines is easier in brick. In block walls, plan the conduit routes and cut them neatly with a chaser. Ask for the electrical and plumbing layout before masonry starts.

Supply and consistency

Whatever material you choose, insist on a single source and batch where possible, and ask for the manufacturer's test certificate. Mixed batches create uneven walls and cracks at junctions.

Worked example: 30x40 plot, G+1, about 2,000 sq ft built-up

The wall area of a house this size is large, and choice of unit changes the mortar, plaster, labour and wall thickness assumptions in the estimate. It is not a safe shortcut to say one is always cheaper. Ask for two priced options: one with solid blocks and one with brick, on the same drawing, and compare total wall cost including plaster and labour. For Buildryt packages, masonry is part of the civil construction included in the per sq.ft rate on buildryt.com/packages (Classic Rs 2,180, Premier Rs 2,360, Signature Rs 2,550 per sq.ft incl. GST in Bengaluru, as of Nov 2026); ask which masonry unit your package uses and get it in writing.

Ten-minute checks you can do on site

• Ask to see the supplier's test certificate for the batch that has just been delivered.
• Look at the stack: units should be similar in size, sound-edged and not crumbling at corners.
• Knock two units together. A clear ring is a good sign; a dull thud or a crack is a reason to ask questions.
• Check that units are wetted before laying, and that joints look full of mortar, not hollow.
• Hold a plumb line against a fresh wall and look for a bulge at mid-height.

None of these replaces a lab test. They help you notice problems on the day, when they are cheap to fix. For a comparison with another popular unit, see Buildryt's note on brick versus AAC block.

Common mistakes to avoid

• Accepting "same strength" without a test certificate for the batch.
• Laying dry units without wetting them.
• Skipping control joints or reinforcement bands where the engineer specified them.
• Forgetting that block walls are heavy when the structure was designed assuming lighter walls.
• Cutting chases after plastering is done.

What to ask your builder

How Buildryt checks masonry

Buildryt's quality page lists masonry checks for unit strength and size, mortar mix, and plumb and line, done per new batch and daily on site with photos, and cites IS 1077 and IS 2185 for masonry. Plaster mix, thickness and curing are checked per floor. See the full quality list.

Next step: use the cost estimator for a starting figure, view packages, see the Bangalore cost page, and ask for both masonry options priced in your free consultation. If budget is the main worry, our guide to low cost construction without cutting corners covers where to save safely.

Frequently asked questions

Are solid concrete blocks better than red bricks?

Neither is better in every case. Blocks are uniform and can reduce mortar and plaster, but they are heavy and harder to chase. Bricks are familiar and easy to cut but vary more. Choose by the standard met, the batch certificate, wall design and your engineer's advice.

What IS code applies to concrete blocks and bricks?

IS 2185 (Part 1) covers solid and hollow concrete masonry units. IS 1077 covers common burnt clay building bricks. Ask your supplier for the manufacturer's test certificate showing the batch meets the class your engineer specified, and keep the certificate with your project records.

Do concrete blocks crack more than bricks?

Cracks come mainly from poor curing, missing joints, weak mortar, unplanned loads or settlement, not from the unit type alone. Blocks need proper curing and control joints. Bricks need proper soaking and bonding. Good supervision matters more than the material.

Will blocks save money on a 30x40 house?

It can, through faster work and less plaster, but it is not guaranteed. Cost depends on block price, wall thickness, labour rates and finishing. Ask for both options priced on the same drawing and compare the total wall cost, not only the price per unit.

Can I hang heavy items on block walls?

Yes, with the right fixings. Solid blocks hold anchors well, but hollow blocks need special fasteners. Tell your builder early where you plan to mount items such as a water heater, TV or cabinets so that solid areas or embedded plates can be planned.