Patio/Paver Materials Calculator Verification Checklist PDF

Full QC Checklist+

Verify site measurement and system selection, base/slab preparation, laying and jointing, and finishing/maintenance.

✓22 Inspection Points

✓4 Verification Categories

✓Site Measurement & System Selection+

Patio length and width confirmed from an actual site measurement, not assumed or scaled from a drawing
Sand-Set vs Mortar-Set selection matches what will actually be built, not just whichever loaded first
Concrete Pavers vs Natural Flagstone selection matches the actual material being purchased
Base depth (Sand-Set) or slab thickness (Mortar-Set) selected against actual soil drainage and local frost conditions, not just the calculator's default
Underground utilities (irrigation lines, low-voltage wiring, gas, sewer/septic lines) located and marked before any excavation begins

✓Base / Slab Preparation+

Subgrade compacted and free of organic material, debris, and soft spots before base or slab placement
(Sand-Set) Aggregate base compacted in lifts no deeper than about 4 in each, not dumped and compacted all at once
Base or slab surface sloped away from the house/structure for drainage (commonly a minimum of about 1-2% / 1/8-1/4 in per foot)
(Mortar-Set, new slab) Concrete slab allowed to properly cure before mortaring pavers/flagstone onto it
(Mortar-Set, existing slab) Existing concrete patio/slab confirmed sound — no major cracks, delamination, or drainage problems — before mortaring directly onto it
(Mortar-Set, new slab) Reinforcement choice (none / wire mesh / rebar grid) matches the actual structural plan, not left at a default

✓Laying & Jointing+

(Sand-Set) Bedding sand/stone dust screeded level and left UNCOMPACTED before laying pavers/flagstone on top
(Mortar-Set) Mortar setting bed mixed to the correct workable consistency and thickness (this calculator's own selected thickness), not applied too thin or too dry
(Concrete Pavers) Layout pattern dry-laid/dry-fit across a representative section before final placement, especially for herringbone or basket-weave
(Flagstone) Stones dry-laid and gaps/fit adjusted by hand before final setting, since no two flagstone pieces are identical
(Sand-Set) Edge restraint installed and properly staked/set around the full perimeter before joint fill goes in
Joint sand or mortar fully packed into every joint (not just the visible top layer) before final compaction/curing or activation

✓Finishing & Maintenance+

(Sand-Set, polymeric jointing sand) Surface swept completely clean of excess sand before water activation, per the product's own instructions
(Mortar-Set) Mortared joints allowed to properly cure before foot traffic or furniture placement
Sealant considered for the paver/flagstone surface and joints, if desired for stain resistance or a wet-look finish
Patio surface observed after the first significant rain to confirm water actually drains away as intended
Delivered material quantities (bags, tons, pallets/sheets/bars) cross-checked against this calculator's own order figures before installation begins

Inspection Notes+

Use the latest approved drawings, specifications, and site measurements.

Complete all critical checks before proceeding to the next work stage.

Record deviations and confirm rectification where required.

Inspection Notes

Use the latest approved drawings, specifications, and site measurements.

Complete all critical checks before proceeding to the next work stage.

Record deviations and confirm rectification where required.

Use it after collecting the project inputs and again before approving or closing the relevant work stage.

No. It supports verification but does not replace approved drawings, specifications, codes, manufacturer requirements, or professional inspection.