Removing mold growth on floor joists in basement here at mastertech we get a lot of calls concerning visible mold growth on the walls of people s basements.
Floor joist mold growth.
Although mold is most common in wet and humid climates it is still relatively common in many other places.
However something that commonly gets overlooked is your floor joists and subfloor also known as your basement ceiling.
If left alone mold in joists can eventually become such a problem that it can only be removed by professionals.
Heavy mold growth on tji joists from new construction.
Thirty percent moisture content is saturated wood so when the joists get this wet you have a serious problem and need to be installing a crawl space encapsulation system.
The best course of action is always to remove any spores in the earliest stages of development so follow the simple steps below to effectively get rid of all of it.
As mentioned before all mold needs to grow is a food and moisture source.
In some cases altering the conditions around the wood can stop growth but in more severe situations a visit from a professional is required.
So don t ever agree to pay for spraying for mold on floor joists unless the pest control contractor insists the moisture content of the floor joists are 25 or higher.
Thankfully even this level of mold growth can be addressed without replacing the joists though the amount of work required is still substantial.
Beyond that some factors that contribute to a higher chance of mold growth include.
Mold spores in the air.