Welcome to the Crawlspace Remediation Blog

Welcome to the Crawlspace Remediation Blog

Crawlspaces are like U.F.O.s; talked about but rarely ever seen, and potentially a bit scary.  

We may not be the Men In Black, but we are the Men In your Crawl; and are here to identify and solve the problems that may be lurking under your home.

Welcome to the Crawlspace Remediation Blog

The purpose of this blog is not to bore you with terms that you wont understand, but to educate and better explain the mystery that is your crawlspace. Throughout this blog you will find periodic postings about crawlspace theory, code and some educational definitions of common crawlspace terms such as; encapsulation, french drains and that thing that makes noises.  So relax and enjoy - Crawlspace Remediation Team

Now you’ll have to remember, we don't build houses from the roof down, so having a healthy and clean crawlspace is essentially the foundation to one of your biggest investments; your home.

So lets start with the basics:  What is a crawlspace?

Actual definition: an area of limited height under a floor or roof, giving access to wiring and plumbing. 


A Better Definition: a wet, dirty, smelly and dark area between the ground and the bottom of a house that is usually constructed with block walls for the home to sit on (with lots of creepys

and crawlys).


A Remediated Definition: a dry, clean, and odorless space under the home, that is technically referred to as an encapsulated crawl space.

Furthermore, there are technically two types of crawlspaces; vented and sealed.

It used to be, only vented crawlspaces were built.  Vents were placed around the foundation so that in the summer you could open the vents and in the winter you could shut them to save on heating costs.  Well, these vents were actually causing a problem… a sealed crawlspace was recently developed.  The reasoning for a sealed crawlspace is because in the summer we were actually allowing hot humid air into the crawl space.  When the hot and humid air mixes with the cooler air in the crawl condensation occurs.  This is where the problems begin….. 


What can go wrong in a vented crawlspace?

Many problems arise in a vented crawl space because of condensation.  Condensation from the hot and humid air that was let in over the summer will have all winter to sit and create problems.  Condensation on the lumber, i.e. joists or sill plates  will begin to mold and potentially rot.  Condensation on duct work will create rust and eventually deteriorate.  Condensation will also accumulate in insulation causing it to hold mold and moisture directly against wood, again creating more rot.


Joists/Sill Plate: a length of timber or steel supporting part of the structure of a building, typically arranged in parallel series to support a floor or ceiling.  


How do we get rid of moisture and mold in your crawl?  ENCAPSULATION!

We will completely seal off the crawl from outside air.  We seal the outside vents from the inside and put a 10 mil liner on the floor.  We then put a 6mil liner on the walls and the two plastics are sealed together.  This completely stops moisture and mitigates radon gas from entering the home and affecting your foundation.


Radon: hazardous gas produced by rock, brick, etc.

Encapsulated Crawlspace: a crawlspace completely sealed off from outside air.  

So you have called Crawlspace Remediation and your crawlspace is now encapsulated right?  So what if your crawlspace was never vented to begin with?


What can go wrong in a sealed crawlspace?

So it’s been raining for what seems like days and you notice visible water in your crawlspace…. It’s not unusual, in fact, many crawlspaces encounter flooding, standing water and muddy conditions. 


How do we get rid of standing water in your crawl? 

Sump Pumps of course.  But first we have to get the water draining here so we install a french drain.  We dig a 6 inch trench around the interior perimeter of the crawl and inside the trench we install a 4 inch perforated drain pipe that directs the water directly to the pump.  This way no matter how the water collects, (from rain or a rising water table), it will flow directly to the sump pump and be pumped out of your crawl immediately.

joist definitions - google -

Crawlspace definition - Google -


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According to a study by the Mayo Clinic, nearly all chronic sinus infections are a result of mold. Since up to 40% of the air we breathe in the home can come from the crawlspace, mold in the crawlspace means mold in the home. The EPA recommends to keep humidity levels in the crawl space to 40%–50% to reduce the likelihood of mold formation.

Learn more about how we can solve your mold problem