Slab Wire Mesh Calculator
Wire mesh for a concrete slab comes in sheets. This works out the slab area, adds an allowance for overlap and cuts, and rounds up to whole sheets.
- Free
- Works offline after your first visit
- Saves on this device
- No sign-up
- Updated
How it works
Multiply the length by the width to get the slab area. Add the allowance, then divide by the area of one sheet and round up.
Mesh is laid so each sheet overlaps the next. How much that overlap takes depends on the mesh and how you lay it, so give it a little room.
Worked example
A slab 20 ft long and 12 ft wide covers 240 ft². With 10% allowed for overlap and cuts, that is 6 sheets sheets of mesh.
Questions
Why does the count need an allowance?
Sheets overlap at their edges and get cut at the slab edges. The allowance covers that, so the last strip is not short.
Should the mesh sit in the middle of the slab?
It is usually raised on chairs or supports so it sits inside the concrete, not on the ground. The mesh label or your concrete supplier can give details.
Is one sheet size the same everywhere?
No. Sheet sizes vary, so check the size printed on the roll or sheet before you buy.
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