Cost · 6 min
What drives lightweight concrete block prices?
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Lightweight concrete block has no single unit price. Several items set the price together: the density class and the binder it needs, the block size and total quantity, the distance from the producing factory and transport, the season and site conditions, and the scope of testing. Two quotes can only be compared once the wall area is converted to block volume and both cover the same scope.
How does density class affect price?
A lightweight concrete block quote prices the block produced, palletised and delivered to site. Material, production, quality control and transport are all in it. If two quotes do not cover the same scope, their m³ or m² figures cannot be compared.
On the material side, the first driver is the density class. In lightweight concrete, small air pores fill part of the volume. As the class rises, the share of pores falls and the share of binder paste grows. More binder means a larger material cost. The typical band for Redblok lightweight concrete block is 500–800 kg/m³. A higher class than the wall needs adds material cost and wall mass. A lower class than needed may not give the strength the wall requires.
Additives and their ratios are specific to our company, and we use a separate mix for each density class. That is why a quote is prepared for a target density class. Class codes such as KB500 and KB600 are design targets. Each class is confirmed by trial mixes and laboratory testing.
Why do block size and quantity matter?
The second driver is how much block is produced. As the total quantity rises, the share of production and shipping per unit falls. Small orders push the unit cost up. That is why we ask for the total wall area and thickness, or the block volume directly, when we prepare a quote.
Block size also sets the quantity. Wall area is multiplied by the chosen block thickness to give block volume (m³). Sections of different thickness are counted separately. For the same wall area, a thicker block means more volume and a thinner block less. Size also affects cutting waste and coursing. We make Redblok in standard sizes.
How does factory distance affect transport?
Redblok is dispatched on pallets and stretch-wrapped. The tonnage and the number of trucks set the transport cost directly. Because the block is light, one truck covers a larger wall area. Even so, each trip costs more as the distance grows.
Today our producing factory is in Birecik, Şanlıurfa. We calculate haul distance from this factory to the site. Our second factory, in the Erzurum organised industrial zone (OSB), is under installation in 2026. Once it starts production, it will be the closer plant for sites in its own region.
Site conditions also feed into delivery cost. Whether a truck can reach the site, whether pallets can be unloaded by forklift or crane, and where the blocks will wait should be discussed before the quote.
What do season and testing change?
The season changes curing measures at the factory and conditions on site. Blocks are cured and palletised in the factory, so production depends little on the weather. Curing still takes longer in winter, and hot, windy weather calls for closer curing checks. Because the block reaches site already cured and cut to size, seasonal risk on site is lower.
Porous lightweight concrete falls outside the scope of TS EN 206, so its performance is defined by the project specification and laboratory testing. We measure fresh density on every mix. For every batch we record fresh and dry density, compressive strength, water absorption, shrinkage and a dimensional check. On request, we add these records to the project file. Project-specific trial mixes, the number of samples and any extra tests should be written into the quote as separate items.
How is wall area converted to volume?
For a price per m², convert to volume first: wall area × block thickness = block volume. Example: 200 m² of wall at 0.15 m needs 200 × 0.15 = 30 m³ of block. For mass, multiply volume by density. With KB600, 30 × 600 = 18,000 kg, about 18 tonnes when dry. The same volume of normal concrete would weigh 30 × 2,400 = 72,000 kg.
When comparing with autoclaved aerated concrete (AAC) blocks, do not look at the m³ figure alone. Line up every item of the finished wall: block, mortar or thin-joint adhesive, labour, cutting waste and plaster. Compare the two blocks for dimensional tolerance, drying shrinkage and strength using test reports. TÜRKBETON does not produce AAC; Redblok is a lightweight concrete block made without an autoclave. The known weak point of non-autoclaved concrete is lower strength and higher drying shrinkage at the same density. We developed our mix with that in mind, and we measure it in every batch.
Also clarify in writing the items that quotes often keep separate: mortar or adhesive, plaster and mesh before plaster, and ties to the frame. If it is unclear who covers these, two quotes may not be pricing the same job. For a first estimate, the free lightweight concrete calculator on this site gives block volume and approximate weight from wall area and thickness, with a waste allowance.
Frequently asked questions
- Why do foam concrete block prices vary?
- Lightweight concrete block quotes differ because they do not all price the same job. Density class, block size, total quantity, distance from the factory, season and testing scope all change the price. We prepare a Redblok quote by pinning these items down for the project.
- How do you calculate lightweight concrete block cost per m²?
- Cost per m² of wall is roughly the cost per m³ multiplied by the block thickness. 1 m² of wall at 0.15 m thickness is 0.15 m³ of block. For example, 200 m² × 0.15 m = 30 m³. When the thickness changes, the cost per m² changes too. Mortar, labour and plaster are separate items.
- Is lightweight concrete block cheaper than AAC?
- Unit prices cannot answer that. A fair comparison looks at the finished wall: block, mortar or adhesive, labour, cutting waste and plaster together. The two blocks should also be compared for tolerance, drying shrinkage and strength using test reports. TÜRKBETON does not produce AAC; it produces only Redblok lightweight concrete block.
- What information does a lightweight concrete block quote need?
- You need the wall type (interior partition or infill within a frame), the total wall area and thickness or the block volume, the target density class, the site's province and district, truck access and unloading means, the planned date, testing requirements, and who is responsible for mortar and plaster.
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