How much screed do you need? Multiply the floor area (m²) by the average depth (mm ÷ 1,000) to get cubic metres, and add a waste allowance (5% by default). Flowing screed is ordered in m³, rounded up to the nearest 0.5m³. For traditional (dry) sand and cement screed, the calculator gives the materials: sand at 1.7 tonnes per m³, cement at 6 × 25kg bags per tonne of sand, PP fibres at 0.9kg per m³ and roughly 200 litres of water per m³. For example, 500m² at 50mm comes to 26.25m³ including 5% waste, so order 26.5m³ of flowing screed, or 44.6 tonnes of sand, 268 bags of cement, 23.6kg of PP fibres and about 5,250 litres of water for traditional screed. Use the calculator below for flowing screed or traditional sand and cement screed.
We quote supply and lay: materials, labour and plant, not materials only. One price for the finished floor, from one team.
| Flowing screed | Traditional sand & cement | |
|---|---|---|
| Typical output | 350 up to 1,000m² a day (Maverick) | 100–120m² a day per team |
| How it's laid | Pumped, then levelled with dappling bars | Pumped or placed, then compacted and hand-finished |
| Pumping distance | Up to 120m | Up to 150m |
| Calculator shows | m³, rounded up to 0.5m³ | Sand, cement, PP fibres and water |
Multiply the area in m² by the depth in metres, then add 5% waste. For 500m² at 50mm: 500 × 0.05 = 25m³, plus 5% = 26.25m³.
Flowing screed is ordered by volume in m³, rounded up to the nearest 0.5m³. For traditional (dry) sand and cement screed we work out the materials instead: sand at 1.7 tonnes per m³, cement at 6 × 25kg bags per tonne of sand, PP fibres at 0.9kg per m³ and roughly 200 litres of water per m³.
Allow 1.7 tonnes of sand per m³ of screed and 6 × 25kg bags of cement per tonne of sand. 500m² at 50mm (26.25m³ with 5% waste) needs about 44.6 tonnes of sand, 268 bags of cement, 23.6kg of PP fibres and roughly 5,250 litres of water (about 200 litres per m³).
5% is typical. Allow more when the work is spread over several locations, floors or small rooms.
A traditional screed team typically lays 100–120m² a day. Flowing screed batched on site by our Maverick runs from 350 up to 1,000m² a day, depending on depth and access.
A rule of thumb is at least 25mm of screed over the pipes, though some proprietary systems allow less. Always follow the designer's and manufacturer's specification.
No. We quote supply and lay: materials, labour and plant, so you get one price for the finished floor rather than separate material, pump and labour costs.