BTA8 for partition walls
Technical data
| Property | BTA8 |
|---|---|
| Dimensions (length × thickness × height) | 250 × 80 × 248 mm |
| Construction | solid |
| Strength class | 20 |
| Density | 1,8 t/m³ |
| Thermal conductivity λ | 0,81 W/(m·K) |
| Block weight | 8.6 kg |
| Wall weight (16 pcs/m², unplastered) | approx. 138 kg/m² |
| Rw unplastered / gypsum plaster 10 mm / cement-lime plaster 15 mm | 44 / 46 / 48 dB |
| Fire resistance | EI 60 |
| Reaction to fire | A1 — non-combustible |
| Consumption per 1 m² of wall | 16 pcs with thin-bed mortar · 15.5 pcs with conventional mortar · adhesive 1.1 kg/m² |
| Pieces per pallet | 144, covering 9 m² of wall |
| Pallet load weight | 1 238 kg |
| On a 24.5 t flatbed | 19 pallets, 2 736 pcs, approx. 171 m² |
How to build BTA8 partitions
After load-bearing walls and floors
Build partitions after completing load-bearing walls and floors. Leave a 20–30 mm gap below the floor above and fill it with flexible material.
Connection to a load-bearing wall
Anchor the partition to the load-bearing wall every 2–3 joints or connect it with a dowel. First course on mortar, subsequent courses on adhesive.
How many 8 cm blocks for a partition
Example: a 3 × 2.6 m partition gives 7.8 m² of masonry, or 125 blocks. We sell full pallets, so the order is 1 pallet, or 144 blocks. Calculate your own requirements using the block calculator.
Documents
We issue a declaration of performance for every delivery. Factory production control is supervised by the notified body KIWA (certificate 0770-CPR-8178-01-17). Download: sound insulation (PDF) and fire resistance (PDF).
Frequently asked questions
How much does an 8 cm sand-lime block weigh?
BTA8 weighs 8.6 kg. One square metre of masonry with 16 blocks weighs about 138 kg without adhesive or plaster.
How many BTA8 blocks are on a pallet?
144 blocks, or 9 m² of wall. The pallet load weighs 1 238 kg. A flatbed carries 19 pallets, or 2 736 blocks for about 171 m² of wall.
How many 8 cm blocks are needed per 1 m² of wall?
16 blocks with adhesive and 15.5 with traditional mortar. Adhesive consumption is 1.1 kg/m².
Does an 8 cm sand-lime partition reduce sound?
According to the declaration of performance (10.10.2026), Rw is 44 dB without plaster, 46 dB with 10 mm gypsum plaster, 47 dB with 15 mm gypsum plaster and 48 dB with 15 mm cement-lime plaster. Use thicker blocks for walls with higher acoustic requirements.
What fire resistance does an 8 cm sand-lime wall have?
According to PN-EN 1996-1-2, an 8 cm wall has EI 60, without a load-bearing classification. Reaction to fire: class A1.
Prepared by the manufacturer, plant operating since 1920.
Request a quotation
We answer enquiries from the entire West Pomeranian voivodeship, as well as Lubusz and Pomeranian voivodeships. Provide the format, quantity in m² or pallets and delivery location — we will prepare a quotation including transport.