Indoor Surface Calculators
Master room renovations with exact material calculations. Eliminate guesswork on paint cans, primer coats, tile boxes, trowel notches, and TCNA grout formulations.
Interactive Surface Tools
Wallpaper Rolls & Adhesive Calculator
Calculate double rolls, vertical strip drops, pattern repeat cut waste (straight vs. half-drop match), acrylic wall prep primer, and adhesive gallons.
Wall & Attic Insulation Calculator
Calculate blown-in cellulose bags, fiberglass/mineral wool batts, framing factor deductions (16" vs 24" OC), and R-values per DOE climate zones.
Hardwood, Laminate & Vinyl Plank Flooring
Calculate carton box counts, pattern waste factors (straight, diagonal, herringbone), underlayment rolls, and 3/8" expansion gap trim.
Drywall Sheets, Screws & Mud Calculator
Calculate 4×8, 4×10, and 4×12 gypsum wallboard sheets, Type W coarse screws, 3-coat joint compound buckets, and seam tape.
Interior Paint & Primer Calculator
Calculate exact 1-gallon cans, 5-gallon pails, wall area, door/window deductions, ceiling paint, and painter supplies with live unfolded wall elevation drawings.
Tile, Grout & Thinset Mortar Calculator
Estimate floor or wall tile counts, packaging boxes, TCNA dry grout powder (lbs/kg), 50 lb thinset mortar bags, and spacers for straight, offset, or herringbone layouts.
Finishing & Installation Guides
The Ultimate Paint Sheen Guide: Flat vs Eggshell vs Satin vs Semi-Gloss
Why eggshell dominates family living rooms, when semi-gloss is essential for moisture, and where flat ceiling paint prevents lap marks.
Tile Lippage & The 33% Offset Rule for 12×24" Porcelain
Why 50% running bond causes stubbed-toe height differences in kiln-fired plank tiles and how leveling clips guarantee flush joints.
Sanded vs Unsanded vs Epoxy Grout: Joint Width Standards
The TCNA joint width thresholds, when silica sand scratches marble, and why epoxy grout never needs chemical sealers.