Guides
Plain-English background to the numbers behind the calculators — what water damage restoration, mold remediation, fire & smoke, sewage cleanup, radon mitigation, asbestos and lead removal and air-duct cleaning cost, and how the drying and containment equipment is sized.
How much does water damage restoration cost?Water damage restoration is priced by the square foot and the IICRC water category. See the formula, a worked example, cost bands and how to budget contingency.Water damage categories and classes explainedIICRC water Categories 1/2/3 rate contamination and Classes 1-4 rate how hard water is to dry. See what each means and how it drives cost and equipment.How many air movers and dehumidifiers do I need?Structural drying uses air movers to evaporate water and LGR dehumidifiers to remove it. See the sizing rules of thumb, a worked example and how to count units.How much does mold remediation cost (per square foot)?Mold remediation is priced by affected square foot plus containment and disposal. See the formula, a worked example, cost bands and the EPA 10 sq ft threshold.Black mold removal: cost and when to hire a proBlack mold is remediated like other molds but signals chronic moisture. See the cost formula, a worked example, testing costs and the EPA 10 sq ft threshold.How much does fire and smoke damage restoration cost?Fire and smoke restoration is priced by affected square foot and severity, plus soot, odor and pack-out. See the formula, a worked example and the cost drivers.Sewage backup cleanup cost and safety (Category 3)Sewage backup is Category 3 black water: a health hazard for certified pros. See the cleanup cost formula, a worked example, and the safety rules that matter.Biohazard and trauma cleanup cost explainedBiohazard and trauma cleanup is priced by labor hours plus regulated disposal. See the formula, a worked example, and why certified professionals are required.How much does radon mitigation cost?Radon mitigation is priced by a base system (set by foundation) plus extra suction points. See the formula, a worked example, sizing and the EPA 4 pCi/L level.Asbestos removal cost and the lawAsbestos is a regulated hazardous material: testing and abatement must follow federal and state law. See the cost formula, a worked example and testing.Lead paint removal cost and the EPA RRP ruleLead paint is a regulated hazard in pre-1978 homes. See the removal cost formula, a worked example, inspection costs and how the EPA RRP rule shapes the work.How much does air duct cleaning cost (and is it worth it)?Air duct cleaning is usually a base fee plus a per-vent rate. See the formula, a worked example, what drives the price, and when it is genuinely worth doing.Dryer vent cleaning cost and fire safetyDryer vent cleaning is a base fee plus a surcharge for rooftop or long runs. See the formula, a worked example, and why lint buildup is a real fire hazard.Air scrubbers & negative air: how to size containment (ACH)Air scrubbers are sized by air changes per hour. See the ACH = CFM x 60 / volume identity, the required-CFM formula, a worked example and how to count units.