Attic Mold Removal

The attic is one of the most common areas for mold growth, and most people don’t find this out until they are trying to sell their home and are informed by the home inspector. Legally they need to have the mold removed in order for the home transfer to occur.

Just to make sure we’re on the same page, if your attic looks like any of the following, then it is mold:

Before and after attic mold


Before and after attic mold

Below I will go through some causes and common questions we get regarding mold in the attic.

Call Now for your Free Mold Assessment!




Moist and humid air causes mold and this is no different in the attic. Most of the time, condensation occurs in your attic due to ventilation issues which in turn causes leaks and moisture. This causes mildew, wood rot and interior water damage. Over time, mold grows and if left untreated, it becomes a big problem when selling your house.

The image below illustrates the problem on the right, with the ideal house on the left.

winter attic conditions

Every house was built with a specific roof ventilation calculation to ensure adequate air circulation. Some times, home owners will add new house features such as installing bathroom exhaust vents or upgrading the insulation. These changes will effect the air circulation and create the moisture for attic mold to start rotting your roof sheeting.

attic mold



Unfortunately every house is different in terms of size, design, damage etc. Without knowing more, it’s hard for us to accurately provide you with a quote. However we price our services very fairly and ultimately it is not expensive in the grand scheme of things.

We offer a transferable guarantee to new home buyers so that they are assured that the problem will never come back.

If you’d like an exact quote, call us now at 416-791-8020 and you’ll be put in touch with an attic mold removal specialist.

How Long Does it Take?

We can solve and remove your attic mold within 48hrs. Best of all, if you call us today, we can even show up at your house today, regardless if you live in downtown Toronto or the GTA. We have corrected and permanently addressed attic mold for over 24 years.

The CleanFirst Guarantee

We are so confident in our ability that we offer a transferable guarantee to new home buyers. This is not a warranty, this is a guarantee that you will never have mold growing again.

Sell Your Home with Ease

With the transferable guarantee in place, you can rest assured that the buyers and home inspectors will be pleased and refilled with confidence, allowing the transaction to go through with ease.

We will remove the mold safely and permanently by restoring the original roof ventilation calculation and addressing the moisture issue that resulted in mold to start decomposing your roof sheeting.

Who we are

We are the leading Toronto mold removal company for the past 24 years with the mission of restoring the peace of mind of our customers when it comes to mold, asbestos or any environmental issue.

A simple call to 416-791-8020 will get you an experienced attic mold removal specialist that will give you peace of mind to you and the buyers by effectively and permanently correct and solve the attic mold.


“Our experience with CleanFirst was one of the best experiences we have ever had with a contractor… Early in the process, it became obvious that we had selected the correct contractor to perform the repairs to our house. In this day of corporate greed, lack of trust and meaningless goals and poor service it was very comforting to find a company that will do as they say and follow through for the customer as Cleanfirst had done for us. In hindsight, the hardest decision we had to make on the repairs of our house was selecting the contractor to represent us and perform the repairs on our house. We are very thankful that we chose CleanFirst and we would highly recommend them to others based on the positive experience we have had with them.”

– Mario F

Call Now for your Free Mold Assessment!