To calculate wall screeding per square meter, you need to consider a few factors such as the thickness of the screeding layer and the area of the wall to be screeded. Generally you will need 0.09 tonnes of sand and 1 x 25 kg bag of cement for screeding per square meter at a depth of 0.05 meter.

Here’s are step to step guide for how to calculate screed quantity:-

- Measure the dimensions of the wall: First determine the length and height of the wall in meters by measuring tape. For example, let’s assume the length of the wall is 4 meters and the height is 3 meters.
- Estimate the area of the wall: Multiply the length by the height to find the total area of the wall to be screed. The wall area = 4 meters (length) x 3 meters (height) = 12 square meters.
- Determine the thickness of the screeding layer: The thickness of the screeding layer typically ranges from 15mm to 50mm, depending on the requirements. Let’s assume you want a minimum 15mm thick screeding layer.
- Calculate the volume of screeding material: To calculate the volume, multiply the area of the wall by the thickness of the screeding layer. The volume = 12 square meters (area) x 0.015 meters (thickness) = 0.18 cubic meters.
- Account for wastage and mixing ratio: Considering a wastage factor of 10%, you will need to multiply the calculated volume by these factors. For example: 0.18 cubic meters (volume) x 1.1 (10% wastage) = 0.20 cubic meters.
- Calculate dry volume of screed: Dry volume of screed = Wet volume × 1.33 = 0.2m3 × 1.33 = 0.266 m3, means to prepare 0.2m3 of screed you may need 0.266 m3 of dry ingradients of sand and cement.
- Decide mixing ratio of 1:4: Let’s assume a mixing ratio of 1:4, where one part is cement is mixed with four parts of sand. Since the mixing ratio is 1:4, you would need 1/5 of the calculated volume for cement and 4/5 for sand.
- Estimate the amount of cement required: Multiply the dry volume by the parts of cement to determine the quantity of cement needed. Volume of cement = 1/5 × 0.266 = 0.053 m3, cement quantity in kg = 0.053 × 1440 = 77 kg, cement quantity in bags = 77/25 = approx 3 bags.
- Estimate the amount of sand required: Multiply the dry volume by the parts of sand to determine the quantity of cement needed. Volume of sand = 4/5 × 0.266 = 0.21 m3, sand quantity in kg = 0.21 × 1600 = approx 340 kg, sand quantity in bags = 340/25 = approx 14 x 25kg bags (or 0.34 tonnes).

Therefore, you will need 0.266 cubic meter (m3) of screed or 340kg (or approx 14 x 25kg bags) of sand and approx 3 x 25 kg bags of cement for an area with a length of 4 meter, a width of 3 meter, and a depth of 0.015 meter.

**How much sand and cement required per square meter screed**

Here’s are step to step guide for how much sand and cement required per square meter screed

- Estimate wet volume of screed: To calculate the volume, multiply the area of the wall by the thickness of the screeding layer. For one square meter area at a depth of 0.05 meter, the volume would be 1x 0.05 = 0.05 m3.
- Account for wastage: Considering a wastage factor of 10%, required screed wet volume = 0.05 x 1.1 = 0.055 cubic meters.
- Estimate dry volume of screed: Dry volume of screed = Wet volume × 1.33 = 0.055m3 × 1.33 = 0.073 m3.
- Decide mixing ratio of 1:4: The mixing ratio is 1:4, you would need 1/5 of the calculated volume for cement and 4/5 for sand.
- Estimate the amount of cement required: Volume of cement required = 1/5 × 0.073 = 0.0146 m3, cement quantity in kg = 0.0146 × 1440 = 21 kg, cement quantity in bags = 21/25 = approx 1 bag.
- Estimate the amount of sand required: Volume of sand required = 4/5 × 0.073 = 0.0584 m3, sand quantity in kg = 0.0584 × 1600 = approx 94 kg (or 0.094 tonnes).

**How much screed do i need per square meter**

The amount of screed needed per square meter depends on the thickness of the screed layer you intend to apply. Typically, screed is applied at a thickness of around 25mm to 50mm for most flooring applications.

To calculate the volume of screed needed per square meter, you can use the formula: Volume of screed = Area (in square meters) x Thickness (in meters). For example, if you’re applying screed at a thickness of 0.05 meters (50mm): The volume of screed = 1 square meter x 0.05 meters = 0.05 cubic meters. Therefore, you will need 0.05 cubic meters of screed per square meter at a thickness of 0.05 meters.

typically, 94 kilograms (approx. 0.094 tonnes) of sand and 1 x 25 kg of cement with the recommended mixture of 1:4 (cement and sand) are required per square meter of screed at a thickness of 0.05 meter.