COLD WEATHER CONSTRUCTION JOB COST: COLD WEATHER AND THE MORTAR CLOCK
Mortar cure has temperature floors. Winter work means heated enclosures, ground thawing, admixtures, and slower rates, or it means idle crews. Northern contractors either price a winter premium or eat one.
This page covers one problem. The full picture for this trade, including the other places margin leaks, is on the masonry operating system page.
WHERE THE MONEY GOES.
Covered in full in the quick answer above. The sourced numbers and what controls it are below.
THE COST, SOURCED.
cold-weather masonry requires "heated enclosures, ground thawing, and slower mortar cure times when cold-weather masonry can't be postponed." (NEDES estimating guide, 2026)
THE NUMBER TO MEASURE IT AGAINST.
Masonry contractors run about % net profit at $1M to $5M, rising to roughly 9% at $5M to $10M. The CFOS target at $1M to $5M is10%, set at 10 percent before taxes or 3.5 points better than your trade's average at your revenue, whichever is higher. A problem like this one lives in the distance between those two figures rather than in a loss on any single job.
Gross margin over the same bands runs % to 22%, against a CFOS target of 10%.
THE SYSTEM THAT FIXES THIS.
The balance sheet figures a bank and a surety underwrite off.
