12 complete symptom paths42 guides and 60 questions in each1,460 Grade A articlesOne searchable, connected knowledge library140 official sourcesEvidence context with explicit limits
← Safe Observation LabOBSERVATION LAB

Safe observation protocols

Repeatable, non-destructive protocols for documenting house symptoms with explicit stop boundaries.

30curated public routes
ODOR01

Odor timeline protocol

Track where an odor is first noticed, how it moves, what systems are active and which weather or occupancy changes repeat with it.

1 guides2 questionsOpen route →
DROP02

Condensation mapping protocol

Map first appearance, surface temperature, room use, airflow and drying time without assuming that every wet edge is indoor condensation.

1 guides2 questionsOpen route →
IMAGE03

Discoloration photo-grid protocol

Create repeatable overview, edge and scale-reference photographs so color change can be compared without losing the original scene.

1 guides2 questionsOpen route →
CRACK04

Crack movement observation log

Track width, direction, endpoints, nearby openings and rate of change while keeping structural stop signs explicit.

1 guides2 questionsOpen route →
SOUND05

Repeating sound cycle protocol

Link a recurring sound to equipment state, water use, temperature change, wind and location without opening energized or pressurized systems.

1 guides2 questionsOpen route →
THERM06

Temperature-gradient walk-through

Compare room, surface and vertical temperature patterns under one stable operating condition before changing settings.

1 guides2 questionsOpen route →
FLOW07

Safe airflow-path observation

Observe supply, return and transfer paths with non-combustion indicators while protecting combustion, electrical and access boundaries.

1 guides2 questionsOpen route →
WATER08

Moisture-pattern observation

Record edges, materials, direction, active sources, drying behavior and unaffected controls before assigning a cause.

1 guides2 questionsOpen route →
RAIN09

Rain-response protocol

Correlate symptom onset with rain intensity, duration, direction, drainage and delayed drying across repeated events.

1 guides2 questionsOpen route →
WIND10

Wind-linked symptom protocol

Compare wind direction and pressure-sensitive symptoms such as drafts, odor transport, noise and water entry.

1 guides2 questionsOpen route →
MELT11

Snowmelt response protocol

Track roof, grading and below-grade symptoms during thaw while separating meltwater timing from indoor humidity changes.

1 guides2 questionsOpen route →
DRAIN12

Drain-odor cycle protocol

Compare fixture use, trap refill, exhaust operation and pressure events without introducing chemicals or dismantling unsafe systems.

1 guides2 questionsOpen route →
FIX13

Fixture-use observation protocol

Observe leaks, pressure changes, drain response and adjacent materials during a controlled fixture-use sequence.

1 guides2 questionsOpen route →
ATTIC14

Safe attic observation protocol

Document visible roof-deck, insulation, penetration and ventilation patterns from safe access without walking unsupported surfaces.

1 guides2 questionsOpen route →
GROUND15

Crawlspace perimeter protocol

Use accessible perimeter observations, weather context and comparative readings without entering unsafe confined or contaminated spaces.

1 guides2 questionsOpen route →
BASE16

Basement wall-floor junction protocol

Track seepage, efflorescence, staining and drying along wall-floor junctions before selecting drainage or envelope explanations.

1 guides2 questionsOpen route →
WINDOW17

Window-edge observation protocol

Compare glass, frame, reveal, sill and exterior exposure to separate surface condensation from leakage pathways.

1 guides2 questionsOpen route →
ROOF18

Roofline exterior observation protocol

Document gutters, flashings, penetrations, roof edges and discharge points from ground-safe viewpoints.

1 guides2 questionsOpen route →
VENT19

Supply and return observation protocol

Compare grille condition, room response, door position and equipment cycles without altering safety controls.

1 guides2 questionsOpen route →
HEAT20

Heating-cycle observation protocol

Track startup, steady operation, shutdown, room response and unusual odor or sound with explicit combustion and electrical stops.

1 guides2 questionsOpen route →
CYCLE21

Appliance-linked symptom protocol

Relate water, heat, vibration, exhaust and drain symptoms to one appliance cycle without bypassing guards.

1 guides2 questionsOpen route →
GRADE22

Grading and runoff observation

Observe water movement, ponding, splashback and discharge distance during or after rainfall from safe exterior access.

1 guides2 questionsOpen route →
GUTTER23

Gutter and downspout observation

Record overflow, joint leakage, outlet blockage and discharge route without unsafe ladder access.

1 guides2 questionsOpen route →
DRY24

Wet-material drying observation

Track time, temperature, humidity and material response while respecting contamination, electrical and insurance boundaries.

1 guides2 questionsOpen route →
VERIFY25

Post-repair observation protocol

Define the trigger, control area, review period and recurrence threshold needed to judge whether a repair held.

1 guides2 questionsOpen route →
PEOPLE26

Occupancy-change comparison

Compare symptoms before and after changes in cooking, bathing, sleeping, door position and ventilation use.

1 guides2 questionsOpen route →
ROOM27

Closed-room comparison protocol

Compare a closed room with an open control room while documenting temperature, humidity, odor and airflow conditions.

1 guides2 questionsOpen route →
CONTROL28

Affected-versus-control protocol

Pair the symptom area with a nearby unaffected location and hold timing, instrument and operating conditions constant.

1 guides2 questionsOpen route →
A/B29

Before-and-after intervention protocol

Capture a baseline, make one reversible change and define the expected response before evaluating the result.

1 guides2 questionsOpen route →
HAND30

Professional handoff observation packet

Package chronology, locations, controls, readings, photographs, interventions and unresolved questions without claiming a diagnosis.