Landscaping calculator

Polymeric sand

Bag count of joint sand from patio area and the coverage printed on the polymeric-sand bag.

Reviewed formula · v1.0.0

Project inputs

Enter field measurements. Imperial lengths take feet and inches. Unit conversion happens before the reviewed formula is applied.

Patio lengthft + inFinished paved lengthftinPatio widthft + inFinished paved widthftinCoverage per bagft² / bagNet coverage on the bag. Narrow joints on 4×8 pavers often land around 40–60 ft² per 40 lb bagWaste factor%Allowance for sweep-off and topping up after the first pass

All values can be refined when you edit the estimate. This tool does not replace field verification or local requirements.

Calculated result

3bags

Bags to buy

FormulaLND-PSN-001

patio area × (1 + waste) ÷ coverage per bag

120 ft²

Patio area

132 ft²

Area including waste

Transparent cost view

Planning rates only. Pick a currency — badges, inputs, and totals follow. Material is a rate. Labour is hours × a planning hourly rate. Equipment and delivery are this-job amounts.

Material ratePlanning · per calculated unit · USDEquipmentPlanning · this job · USDDeliveryPlanning · this job · USDLabour hoursPlanning · this jobLabour ratePlanning · per hour · USDOverhead %%Contingency %%Markup %%Tax %%

Planning defaults are office figures, not a bid. US ready-mix in 2026 often lands around $125–165 per cubic yard delivered; place-and-finish commonly $2–4 per square foot. Replace every rate with a supplier or crew quote before you send the letter.

Indicative FX as of Aug 2026. Planning conversion, not a live bank rate.

Material costUSD 255

Labour (8 h)USD 280

Direct costUSD 645

Overhead + contingencyUSD 64.50

Markup + taxUSD 85.14

Estimated project totalUSD 795

View estimate Quote / invoice Add another item

Embed this calculator

<iframe src="https://construclytic.com/embed/polymeric-sand" title="Polymeric sand" width="100%" height="820" loading="lazy" referrerpolicy="strict-origin-when-cross-origin" style="border:1px solid #d7e0da;border-radius:16px;background:#fff;"></iframe>

Paste on a contractor site or blog. The iframe is a planning takeoff, not a bid.

How this calculator works

A transparent polymeric sand takeoff.

Divide patio area by the coverage printed on the polymeric-sand bag, then apply sweep-off allowance before whole-bag rounding.

Worked example. Example: a 12 × 10 ft patio at 50 ft² per bag with 10% waste rounds to 3 bags.

1. Measure the finished paved face after cuts.
2. Enter the coverage from the bag you will buy. Joint width and paver size change it a lot.
3. Plan a second pass after the first watering. That is what the waste field is for.

Need the broader workflow? Read the landscaping planning guide.

Questions

Questions about polymeric sand

Why not calculate from joint width?

Joint volume varies with chamfer and bedding. The bag coverage is the number you will actually purchase against. Change it when the label changes.

Regular jointing sand?

Same area math. Use the coverage the sand supplier prints, which is often higher than polymeric.

What is the formula ID?

This calculator publishes formula LND-PSN-001, version 1.0.0. The ID stays on the result and on the estimate line.

Is this engineering advice?

No. Construclytic is a planning website, not a registered engineering or contracting firm. Field checks, codes and product data still sit with you.

Does Construclytic fetch live supplier prices?

No. Costs use the rate you enter. Construclytic does not fetch live supplier prices.