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Guides

Plain-English guides that show the math behind every order, with worked examples and links to the calculators.

Concrete & Masonry

How Much Concrete for a DrivewayDriveway concrete quantities in cubic yards for common sizes at 4 and 5 inches thick, the formula, waste allowance and common mistakes.How Many Bags of Concrete Make a Cubic YardA cubic yard takes 45 bags of 80-lb concrete mix, 60 of 60-lb or 90 of 40-lb. See the math, a slab table and when ready-mix is the better call.Concrete Slab Thickness for a Patio, Garage and ShedTypical concrete slab thickness for patios, garage floors and sheds, with cubic yards for each, the gravel base and what extra thickness costs.

Landscaping

How Deep Should Mulch BeMulch should be 2 to 3 inches deep. Learn how much to buy, bags versus bulk, and how to avoid mulch volcanoes and other mistakes.

Walls, Floors & Roofs

How to Measure a Roof for ShinglesMeasure roof area from the footprint and pitch, convert to squares, add waste and count shingle bundles, with a worked example.