Paver Bedding Sand Plan
One inch of coarse sand over a base that is already flat. 324 sq ft per cubic yard per inch.
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The patio
- Date
- Length
- Width
- AREA
- Bedding depth
- CUBIC YARDS
- Cubic feet
- Tons
- Bags
- Sand grade
- Supplier
- Delivery date
Figures and rules
- ⚠ Bedding depth
- 1 INCH — always
- 1 cu yd at 1 in covers
- exactly 324 sq ft
- Why exactly
- 27 cu ft / (1/12 ft) = 324
- At 2 in
- 162 sq ft per cu yd
- Concrete/masonry sand
- 2,600-2,900 lb per cu yd
- ⚠ Order by
- VOLUME — weight varies with moisture
- Correct sand
- coarse, sharp, ANGULAR
- ⚠ Wrong sand
- play sand, soft builder's sand
- Levelling belongs in
- the compacted aggregate BASE
- Joint sand
- different product, bought separately
- Compaction
- at the END, through the pavers
Getting the bed right
- Base excavated deep enough for base + sand + paver
- Aggregate base laid in lifts and plate-compacted
- Base screeded FLAT before any sand appears
- Base checked with a long straightedge, not by eye
- Correct fall for drainage — away from the house
- Coarse angular sand, checked at the yard
- Screed rails set to exactly 1 inch
- Sand screeded, then NOT walked on
- Working off laid pavers, not off the bed
- Sand NOT tamped before laying
- Joint sand bought separately
- Plate compactor run over the finished pavers with a pad
One inch, and that is the whole rule
Bedding sand is a setting layer, not a levelling layer. It cannot compact into a stable structure, so the more of it there is, the more there is to migrate under load. Every dip in a paved patio started as too much sand.
324 square feet per yard, per inch
27 cubic feet divided by one twelfth of a foot is exactly 324. Not a rounded figure — worth memorising, and it makes checking a supplier's quote a five-second job.
If the base is uneven, go back to the base
Extra sand hides a bad base for one season. The levelling belongs in the compacted aggregate, screeded flat before any sand goes down. Fixing it later means lifting the pavers you just laid.