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When Does Mould Start to Grow – When is Mould Season?

When Does Mould Start to Grow – When is Mould Season?

Mould is never a cause for excitement, but it is a concern that most of us will encounter at some point. The unsightly growth is a common household problem that can happen anywhere and anytime. However, it is most often evident in the spring and late summer months, when allergy season is at its peak.

Since mould exposure worsens allergy symptoms and other health problems, this blog will discuss what to know about mould season and offer prevention tips to ensure your home remains mould-free. In this situation, you might need mould removal experts

When Does Mould Start to Grow?

Mould season generally starts in the spring months and continues through the late summer months. The warm weather during this period means moisture is abundant, which mould needs to grow. Although mould can occur in the winter, it is usually less common. 

Depending on the materials, moisture present, and the temperature, it typically takes 24 to 48 hours for mould to form.

What Causes Mould to Grow?

Various factors can cause mould growth, so knowing what signs to look for can ensure you can limit or altogether avoid mould exposure in your home. 

Mould spores

The presence of mould spores can quickly spread, contaminating multiple rooms in your home. 


Mould thrives in warm and damp environments, so mould season generally falls during the warm, humid months when there is more moisture.

Leaky pipes, roofs, and windows

Leaky house fixtures allow moisture to seep into the home. If you have any leaks, consider fixing them as soon as possible to prevent mould growth.

Poor ventilation

A lack of adequate ventilation can lead to excess moisture and humidity, creating the perfect environment for mould growth.


Address any excess water issues immediately because mould growth might result from flooding. A flooded room causes extensive water damage and mould if left untreated.

Preventing Mould Growth in Mould Season

Now that you know when mould season is and what causes it to grow, here are some tips on how to prevent it from appearing:

  • Throw away any old food source that can be a host of mould.
  • Repair any broken pipes or fixtures immediately.
  • If your home has flooded, dry it out as soon as possible. You may require professional help to do so. 
  • Clean areas prone to mould, such as the bathroom, kitchen, and anywhere moisture is present. If you detect mould on porous surfaces, try scrubbing it with a sponge and disinfecting it thoroughly to prevent it from returning.
A clean white bathroom. Clean bathroom can decrease chances of mould growth in mould season.
A clean bathroom will decrease your chances of mould growth.
  • Ensure basements and crawl spaces are adequately ventilated and dry. Use a dehumidifier if needed.
  • Turn on exhaust fans when cooking, showering, and doing laundry. Doing so helps disperse the moisture in the air. 
  • If you see any signs of mould, act quickly to clean it up and prevent it from spreading.

These simple tips can help prevent mould growth in your home and allow you to enjoy a mould-free season. 

Call PuroClean For Professional Mould Remediation Services!

We understand how stressful and daunting mould contamination can be, and PuroClean is here to help. 

We offer 24/7 emergency cleaning services for water damage and mould damage remediation. Our experienced technicians will restore your property to its pre-loss condition promptly. Visit our online office locator or call (877) 261-7876 today to find your local PuroClean office.