Calculate each specified layer mass before summing the stack.
Why can equal layer thicknesses contribute different material mass?
Use the matching calculator
Use this decision sequence
- Use one common footprint for the specified continuous layers.
- Enter each actual thickness and supplied density on compatible units.
- Apply matching-layer counts to both height and material volume.
- Keep total material mass separate from support capacity or assembly approval.
Keep the quantities distinct
| Quantity or assumption | How to use it |
|---|---|
| Layer height | Depends on thickness and repeated count. |
| Layer mass | Also depends on density. |
| Support suitability | Needs a separate professional determination. |
Worked comparison
Across a 2 m² footprint, a 10 mm layer at 1,000 kg/m³ contributes 20 kg. A 20 mm layer at 500 kg/m³ also contributes 20 kg. The stack totals 30 mm height and 40 kg material mass. It does not establish that any floor or support can carry that mass.
Check before using the estimate
Use verified product densities or measured values. This is material arithmetic, never a structural load or fire-rated assembly check. The example values are illustrative arithmetic inputs. Replace them with your measured plan, selected product information and actual quote where relevant.
All dimensions, product properties, prices and specifications in this example are illustrative arithmetic inputs. Use the values from your measured plan, selected product data sheet and supplier quote. This guide does not choose construction specifications or certify safety.
Calculation and scope checked 2026-10-04. Methods and scope.