Contact
Tell us what's going on
We'll reply with next steps and schedule options
Response time
Urgent requests: Same business day
Non-urgent: within 24 hours
Service area
Greater Montreal Region
Information
Description of the situation and
photos if possible
Humidity, Moisture & Suspected Mold
Excess humidity and moisture can damage materials, create musty odours and conditions favourable to mold growth. Puritas investigates moisture sources, airflow and building conditions to identify likely causes and provide clear, actionable recommendations.
What we investigate
We follow humidity and suspected mold by combining visible building clues with targeted measurements to distinguish condensation from leaks, infiltration, or hidden moisture, then deliver a clear, evidence-based summary with practical next steps.
Moisture conditions
RH and temperature (hygrometer), moisture meter readings, and where condensation is most likely.
Visible building signs
Water staining or discolouration, peeling, swelling, efflorescence, and material changes that point to moisture history
Thermal patterns
Thermography when useful to identify cold surfaces, thermal bridges, and hidden moisture indicators
Ventilation and airflow
Air movement and exhaust performance in bathrooms, kitchen, basement, and problem rooms,
Suspected mold context
Where mold could form based on moisture conditions and materials, and what should be confirmed before conclusions are made
What to expect: Typical visit 2-3 hours • Verbal or written report • Prioritized recommendations
Humidity, Moisture & Suspected Mold
Excess humidity and moisture can damage materials, create musty odours and conditions favourable to mold growth. Puritas investigates moisture sources, airflow and building conditions to identify likely causes and provide clear, actionable recommendations.
What we investigate
We follow the odour—checking moisture, airflow, drains, and materials—to deliver clear next steps and flag when HVAC or plumbing input may be warranted.
Moisture
Readings and risk zones (surfaces, basement, condensation).
Ventilation
Airflow and circulation patterns (rooms, bathrooms, basement).
Drains / traps / sewer odours
Screening for dry traps, localized sources, and signs of backflow.
Materials
Areas that absorb or hold odours (closets, carpets, wood, subfloors).
Patterns
Where/when it’s strongest (heating cycles, timing, weather, room use).
What to expect: Typical visit 2-3 hours • Verbal or written report • Prioritized recommendations
Condensation
Windows, cold surfaces, bathrooms, basements.
Ventilation
Poor airflow, insufficient air exchange, blocked exhaust.
Leaks
Plumbing leaks, hidden leaks, failed seals.
Materials
Damp drywall, wood, insulation, carpets.
Infiltration
Rainwater, foundation seepage, roof or wall infiltration.
Appliances
Humidifiers, dryers, exhaust fans, AC units.
Common factors
Humidity and moisture problems often have multiple causes, including condensation, hidden leaks, poor ventilation, water infiltration and everyday moisture sources. Puritas investigates these conditions to identify what is contributing to the problem and recommend practical next steps
FAQ - Humidity & Mold
Moisture
Windows, cold surfaces, bathrooms, basements.
Stagnant air
Poor airflow, insufficient air exchange, blocked exhaust.
Drains / siphon
Plumbing leaks, hidden leaks, failed seals.
Materials
Damp drywall, wood, insulation, carpets.
Infiltration
Rainwater, foundation seepage, roof or wall infiltration.
Appliances
Humidifiers, dryers, exhaust fans, AC units.
Common Factors
Humidity and moisture problems often have multiple causes, including condensation, hidden leaks, poor ventilation, water infiltration and everyday moisture sources. Puritas investigates these conditions to identify what is contributing to the problem and recommend practical next steps.
Contact
Tell us what's going on
We'll reply with next steps
and schedule options
Response time
Urgent requests: Same business day
Non-urgent: within 24 hours
Service area
Greater Montreal Region
Information
Description of the situation and photos if possible