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Most Common Areas Affected By Mold During Heatwaves

Published on July 22, 2025

Summer days featuring high heat and extreme humidity are the perfect conditions for rampant mold growth. Therefore, it’s no surprise that service calls for attic mold removal increase at MoldTech in the weeks after a heatwave. The good news is that mold removal in Bradford can safely and effectively eradicate any new or established colonies. It’s important to know what conditions to check for to avoid mold during heat waves — here are a few key areas our team thinks are critical to monitor. 

Attics and Roof Spaces

attic mold removalWhen a heatwave meets a poorly prepared attic, the risk of mold growth increases. Attics that have insufficient insulation, poor ventilation, blocked soffits or vents, and damaged shingles or sheathing can all promote the heat and moisture that mold growth loves. The attic and roof are difficult for homeowners to assess accurately, and without safety training, accidents and damage can easily occur. 

Basements and Crawl Spaces

Other than the attic, the basement or crawlspace are the most mold-prone areas in a home. That’s because, as a sub-grade space, the basement naturally retains moisture and humidity and has restricted airflow because there are fewer windows. The basement is often where water mains originate, and many metres of piping travel through it, increasing the likelihood of leaks and drips.

Bathrooms and Laundry Rooms

The bathroom is an area with naturally high humidity because there’s constantly water moving through the sink, bathtub, and toilet. This can lead to high humidity (especially when bathing) and rapid mold growth. Mold is especially problematic in powder rooms or laundry rooms without windows, because humidity becomes trapped without air movement to dry it out. 

Kitchens and Behind Appliances

Leaky plumbing can happen wherever there is plumbing, but for some reason, the kitchen is one of the most common areas it causes mould growth. Kitchens have multiple areas where moisture is added or created by everyday activities: washing, spills, cooking heat, and condensation can all spark infestations. All it takes is one leaky pipe or faulty dishwasher, too! Regular cleaning is key to mold prevention in the kitchen. 

Air Conditioning Systems and Vents

A heatwave usually means that the air conditioning is on all day long to create a cool temperature and reduce indoor humidity. A/C also helps prevent summer mold growth since spores thrive in warm and moist environments. However, if there’s an existing mold problem in your ducts or filters, your HVAC system may actually help spread a mold problem!

Prevention and Inspection Tips

Avoiding mold removal in Bradford is all about prevention. At MoldTech, we recommend easy DIY solutions like humidity monitors and dehumidifiers to bring down indoor humidity. Homeowners concerned about mold growth can watch out for common signs like musty odours, staining, and condensation, too. Whenever you have a concern about mold growth, the best course of action is to arrange mold testing. This professional, science-led service will thoroughly assess your home for at-risk areas and locate mold colonies, no matter how big or small. 

Heatwaves are a common reason that homeowners require attic mold removal services. Don’t let this be you! Call MoldTech today for a thorough home inspection and safe, reliable solutions to mold. 

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