The house is not a list. It is a living map.
Move through 14 rooms, 12 building systems and 24 seasonal trigger maps. Follow where a signal appears, which system can move it and when weather or operation changes the pattern.
Every location changes what the same symptom can mean.
Each atlas connects visible signals, hidden systems, safe checks, boundaries and professional handoff.
Attic
Frost, roof-deck staining, odor, insulation disturbance and air leakage where indoor moisture meets the roof assembly.
Crawlspace
Ground vapor, drainage, humid-air condensation, plumbing leakage and pressure-driven odor beneath the living space.
Basement
Below-grade walls and floors where surface water, groundwater, capillary transport and cool-surface condensation can overlap.
Bathroom
A high-moisture room where ventilation, plumbing, seals, wet-room layers and cold surfaces produce similar-looking symptoms.
Kitchen
Cooking moisture, supply and drain connections, appliances, exhaust and exterior-wall interfaces concentrated in one room.
Bedroom
Long occupied hours make humidity, surface temperature, ventilation, exterior-wall leakage and hidden odor transport easier to notice.
Living room
Large exterior surfaces, fireplaces, windows, floors and mixed air paths create clues that change with occupancy and weather.
Laundry room
Water, drainage, lint, heat and exhaust operate in repeated cycles that can reveal timing signatures.
Garage
Vehicle moisture, stored chemicals, slab edges, adjoining walls and pressure differences can move odors and contaminants indoors.
Roof
Drainage geometry, penetrations, flashings, wind exposure and freeze-thaw conditions determine how exterior water reaches hidden layers.
Facade
Cladding, joints, openings and drainage planes respond to wind-driven rain, solar heating, movement and maintenance gaps.
Foundation
Loads, soil moisture, drainage, freeze-thaw and material movement converge at the house-to-ground boundary.
Windows & doors
Openings combine drainage, seals, air leakage, thermal bridges and structural movement in a small visible zone.
Utility room
Heating, water, drainage, electrical and ventilation equipment create strong cycle-linked evidence but higher safety boundaries.
Follow the pathway, not only the stain.
Systems move water, air, heat, loads, electricity and waste through rooms that may be far from the source.
Ventilation & airflow
Supply, exhaust, transfer paths and pressure differences that move moisture, odors and outdoor air through the house.
Trace system →↘SYSTEM 02Roof drainage
Roof surfaces, valleys, flashings, gutters and discharge paths that control bulk water before it reaches hidden layers.
Trace system →⌄SYSTEM 03Ground & drainage
Grade, surface runoff, groundwater, drains and capillary pathways around below-grade construction.
Trace system →⇣SYSTEM 04Water & waste
Pressurized supply, fixture seals, gravity drainage, traps and venting that produce distinct timing signatures.
Trace system →≋SYSTEM 05Heating system
Heat sources, distribution, controls and combustion boundaries that change temperature, humidity and pressure.
Trace system →▥SYSTEM 06Insulation & airtightness
Thermal resistance and air-control layers that determine surface temperature, condensation risk and hidden moisture transport.
Trace system →◫SYSTEM 07Wet-room envelope
Waterproofing, joints, penetrations, falls and surface layers intended to control repeated direct wetting.
Trace system →▯SYSTEM 08Windows & openings
Frames, flashings, seals, drainage paths and thermal bridges around windows and doors.
Trace system →⌁SYSTEM 09Structure & foundation
Loads, connections, soil support and material movement that can create cracks, slopes, gaps and binding.
Trace system →⚡SYSTEM 10Electrical system
Wiring, connections, loads and equipment where heat, odor, sound and intermittent behavior can be safety-critical.
Trace system →♨SYSTEM 11Chimney & combustion
Draft, venting, combustion air and flue boundaries that can change with wind, temperature and house pressure.
Trace system →◇SYSTEM 12Exterior envelope
Cladding, membranes, joints, penetrations and interfaces that control rain, air and drying at the outer shell.
Trace system →Weather is not background. It is evidence.
Use rain, freeze, humidity, heat, wind and operating seasons as comparison windows without treating correlation as proof.
Map the evidence. Do not overclaim the fault.
HouseSymptoms organizes rooms, mechanisms, triggers and next steps. It does not certify hidden conditions, authorize regulated work or replace qualified assessment.
