How to Choose Strong and Quality Concrete Blocks for Your Building Project

One of the first questions people ask when planning a house construction project is: “How many concrete blocks will I need?” The answer depends on the size of the walls, block dimensions, doors and windows, internal partitions and the building plan.

If you are building in Akure, getting the quantity right matters because ordering too few blocks can interrupt construction, while ordering too many can tie up money and create unnecessary storage and handling problems.

This guide explains a practical way to think about concrete block quantity estimation in Akure before requesting a quotation from a supplier.

If you already know the block specification and quantity required, you can move directly to our Concrete Blocks in Akure buying page for current availability, pricing and delivery enquiries.

What Determines the Number of Concrete Blocks You Need?

The number of blocks required for a house is not determined by the number of bedrooms alone.

Two houses with the same number of bedrooms can require different quantities of blocks because their wall lengths, room layouts, building footprints, ceiling heights and window and door openings may be different.

The main factors include:

Start With the Wall Area

One practical way to estimate blocks is to first determine the approximate wall area.

In simple terms:

If a wall is 10 metres long and 3 metres high, for example, its gross wall area would be 30 square metres before deducting doors and windows.

For an entire building, the calculation needs to account for the different external and internal walls rather than treating the house as one simple rectangle.

Remember Doors and Windows

A wall is not made entirely from blocks.

Doors, windows and other openings reduce the actual wall area that needs to be filled with blocks.

This is why a simple calculation based only on the external dimensions of a building can overestimate the number of blocks.

Example

Suppose a wall has a gross area of 30 square metres, but its doors and windows account for 5 square metres.

The approximate net block wall area would then be:

This is still only a simplified planning calculation. The actual number of blocks depends on the block dimensions and the detailed building layout.

Block Size Changes the Estimate

The physical dimensions of the block being used are important when estimating quantity.

A block with a different face area will cover a different amount of wall surface. Therefore, you should never take a block estimate prepared for one block size and automatically apply it to another.

In Akure, customers may ask about different block thicknesses, including commonly requested 6-inch and 9-inch blocks.

However, thickness should be selected according to the building specification rather than simply choosing whichever block produces the cheapest estimate.

A Simple Method for Estimating Concrete Blocks

For a basic planning estimate, you can follow these steps.

Step 1: Get the Building Dimensions

Use the building drawings or measurements to identify the lengths and heights of the walls.

Step 2: Calculate the Gross Wall Area

Multiply the relevant wall lengths by their heights.

Step 3: Deduct Major Openings

Account for doors, windows and other significant openings.

Step 4: Determine the Block Face Area

Use the actual face dimensions of the block specified for your project.

Step 5: Estimate the Number of Blocks

Divide the net wall area by the approximate wall coverage of one block.

Step 6: Add a Reasonable Allowance

Include an appropriate allowance for breakage, cutting, handling and wastage based on the project's circumstances.

Allow for Breakage and Wastage

Ordering exactly the theoretical number of blocks is usually not a sensible construction strategy.

Blocks can be damaged during loading, transportation, unloading, stacking and construction. Some units may also need to be cut around openings or adjusted during masonry work.

The appropriate allowance depends on the project and the handling conditions.

Rather than adding an arbitrary large percentage, discuss the expected requirement with your contractor or building professional and consider the supplier's handling and delivery arrangements.

Does a Bigger House Always Need More Blocks?

Generally, a larger wall area means more blocks, but house floor area alone is not enough to determine the exact quantity.

A compact house with fewer internal partitions can have a different block requirement from a house with the same floor area but many rooms and partition walls.

Similarly, a building with many large windows and doors may require fewer blocks in certain wall sections than a building with fewer openings.

This is why statements such as “a three-bedroom house needs exactly X blocks” should be treated cautiously unless the building design and block specification are also known.

Do Not Forget Internal Walls

One of the common mistakes when estimating building blocks is calculating only the external walls.

Internal partitions can represent a significant amount of masonry work, depending on the building layout.

When preparing an estimate, account for:

Example of a Simple Wall Estimate

Consider a simplified wall with:

The estimated net wall area would be:

The next step is to determine how much wall area one block covers based on the actual block dimensions being used.

Once that coverage figure is known, the net wall area can be divided by the coverage per block to produce a theoretical quantity.

An allowance can then be considered for breakage and wastage.

When Should You Order Your Blocks?

Block ordering should be coordinated with the construction schedule.

Ordering everything too early can create unnecessary storage and handling issues. Ordering too late can interrupt masonry work and affect the construction schedule.

For larger projects, it can be useful to discuss supply in stages with the contractor and supplier.

When requesting a quotation, provide:

Planning a Concrete Block Order in Akure

If your project is in Akure, transportation and site access should be considered alongside the block quantity.

A quotation that looks attractive per block may not represent the final cost if transportation, loading, unloading or site access creates additional expenses.

Before ordering, confirm:

If you need help moving from your estimated requirement to a concrete block enquiry, you can contact Mike Inc Blocks with your block size, estimated quantity and construction location.

Frequently Asked Questions About Concrete Blocks in Akure

Plan Your Block Quantity Before You Order

Estimating the number of concrete blocks for a house is easier when you start with the building plan and work systematically through the wall dimensions, openings, block specification and expected wastage.

Avoid relying on a fixed number based only on the number of bedrooms. The actual design of the building is much more useful for producing a realistic material estimate.

If you are constructing in Akure, prepare your estimated quantity, confirm the required block specification and then compare the current availability, price and delivery arrangements before placing your order.