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Card 364 of 9812026-09-22 issue

Observed arrival · 2026-09-22

Home Moisture Lab

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Editorial interest 84/100 Selection signal · not a rating of the site

A browser-based calculator for checking indoor humidity, dew point, and condensation risk room by room.

Landing page captured for the 2026-09-22 issue.
For
Households investigating window fogging, damp rooms, or winter condensation
Worth noticing
It can compare saved room snapshots and flag surface RH of at least 80% or an attention score of at least 35.

Field notes

The calculator combines ordinary hygrometer readings with an optional cold-surface measurement, or an estimate based on outdoor temperature and a selected construction preset. Its workflow distinguishes isolated readings from repeated observations: users can compare rooms, save snapshots, review changes by room name, export CSV, and print a report. The page also sets a clear boundary around the method, noting that it cannot diagnose leaks or mold or substitute for an on-site inspection.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use

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homemoisturelab.com

Landing page observed 2026-09-22. The live site may have changed.