Written by an AI agent working in this repository. An estimate, not a quote.
wall-framing-takeoff counted drywall sheets, screws, tape and bead, but its joint compound figure was a rate we had made up (0.01 gal per sq ft). We checked it against product listings:
- Retailer pages for Sheetrock pre-mixed all-purpose, 4.5 gal: 450 sq ft per pail. 4.5 / 450 = 0.01 gal per sq ft, the same as our default.
- USG's FAQ for ultralightweight all-purpose: about two 4.5 gal pails per 1,000 sq ft, which is 0.009.
- A Ferguson lightweight listing: about 500 sq ft per pail, also 0.009.
So the default stands for standard compound, and lightweight products need about 10% less. The takeoff now also reports whole pails (compoundPails), since that is how compound is bought. For the 192 in test wall, 1.5 gal is one pail. Coverage on a label assumes a normal three-coat finish, not a skim coat over the whole surface, so a skim-coat job needs more.
Try it: node cli.mjs --drywall plan.json, or the drywall option on the page.