The IICRC Water Restoration Technician (WRT) certification covers the fundamentals of water damage response — contamination classification, moisture assessment, general restoration principles. The IICRC Applied Structural Drying (ASD) certification covers the science that WRT does not: psychrometrics, the physics of air-water interaction, evaporation rate calculation, equipment selection based on drying load, and material-specific dry standard confirmation. ASD is the credential that separates companies that dry structures from companies that understand the science of drying structures. PureDry Solutions holds IICRC ASD certification alongside WRT, AMRT, and FSRT — and applies ASD psychrometrics science to every Rhodelia, KY structural drying project, with a documented psychrometric log for your KY carrier. Call (833) 652-9398 now.
Psychrometrics is the study of the thermodynamic properties of air and water vapor — the science that governs how moisture evaporates from wet structural materials and how that evaporated moisture must be captured by dehumidification equipment. ASD-certified drying uses psychrometric principles to calculate the evaporation rate the drying system must achieve, select and size equipment based on the actual drying load (not rules of thumb), and track daily progress against the expected drying curve. When the drying curve flattens — indicating that evaporation rate has slowed — ASD knowledge identifies why and what equipment adjustment will restore the rate.
For KY insurance claims, psychrometrics-based drying produces the documented evidence carriers need: a psychrometric log showing daily temperature, relative humidity, grains per pound, and moisture content readings that demonstrate active, progressing drying rather than equipment sitting in a space for a fixed number of days. Carriers who see a psychrometric log with declining moisture content readings across the drying period have objective evidence that drying was performed scientifically and that dry standard was achieved by instrument confirmation rather than elapsed time. PureDry Solutions produces this log on every job, for every KY carrier.
ASD psychrometrics calculates the actual drying load: the volume of water that must be evaporated from the affected materials and captured by dehumidification equipment, based on material types, moisture content at baseline, space volume, and ambient conditions. Equipment is selected and positioned to meet the calculated drying load — not based on a rule-of-thumb square footage estimate. A job with high-density structural materials (concrete, engineered lumber) requires different equipment sizing than a job with the same square footage but lightweight gypsum board and carpeting.
Daily psychrometric readings track the evaporation rate: the rate at which the dehumidifiers are capturing water (measured in pints per day from the condensate drain, cross-checked against the grains per pound change in the drying zone). When the evaporation rate flattens without reaching dry standard, PureDry Solutions adjusts — repositioning air movers to improve air exchange at the wet material surface, adjusting temperature to accelerate evaporation, or adding dehumidifier capacity. The adjustment rationale is noted in the psychrometric log as part of the scientific record.
IICRC dry standard is not a single moisture content number applied to all materials. Wood framing has a target that differs from engineered wood products. Gypsum board has a target that differs from plaster. Concrete has a target that reflects its significantly slower drying behavior compared to wood assemblies. PureDry Solutions tracks each material class separately in the psychrometric log and confirms dry standard independently for each — the log documents which materials reached dry standard and on what date, providing the carrier with material-level drying evidence rather than a single project-level conclusion.