Crawl Space Ventilation in PA & NJ

Crawl Space Repair
Get a Free Estimate

Crawl Space Vent Sealing Solutions in Philadelphia and New Jersey

pSince the air in your house drafts from the bottom up, the last thing you want is to leave openings for outside air to come in and allow dirty air from the crawl space to enter your home, causing your family to breathe in dirt and mold particles, contributing to allergy symptoms and other health issues.


Most crawl spaces have been vented due to antiquated building codes. Nowadays, we’ve become aware that venting a crawl space creates big problems!  It is absolutely necessary to seal any vents or areas where outside air can enter in order to prevent potential health issues, mold, mildew, odors and structural decay. Sealed vents will not only keep outside air out but it will help with other ´problems such as insects and wildlife intrusion, and moisture control. Our patented vent covers are mechanically attached to form an airtight bond.


Ventilated Crawl Spaces? Not on Our Watch.

Builders have always favored crawl spaces because they’re faster and less expensive to build than a full basement foundation. This type of traditional crawl space utilizes openings, or air vents so that the air can circulate and keep the area dry.

If there is any insulation installed, you may find it in the form of fiberglass batts, which are placed between crawl space joists. The crawl space’s floor will typically be comprised of either soil or concrete.

Having this type of crawl space can be troublesome. During the summer, when the crawl space continuously receives unconditioned air from the outside, it also allows moisture in. Due to differences in temperature between the crawl space and outside, moisture will start to condense on various surfaces of the crawl space, which invites mold to grow and causes wood to rot. The presence of wet wood can also attract insects such as termites and carpenter ants. 

In winter, there’s a new set of problems: freezing air from the outside will enter the crawl,  cause the floor above ot to become cold and cold drafts make your rooms very uncomfortable.

If there are HVAC ducts running through the crawl you can expect higher energy bills year round because the air that you are paying to coll and heat os gaining or losing temperature on their way to your living space. That means that your HVAC system is working harder just to keep up with the temperature changes in the crawl space.


Jamison Waterproofing can Seal Your Crawl Space and Prevent Catastrophe

Contact us today if you would like to know more. We also offer other services, such as basement crack repairsfoundation repairs, and basement waterproofing. If your home is in the states of Philadelphia, New Jersey, or surrounding areas, get in touch with us right away so we can get to work helping you achieve your goal of having a healthier, more comfortable living space.


Get a Free Estimate Today!

What Our Basement Waterproofing Customers Say About Us

Dan Velich
Dan Velich
Was very knowledgeable and gave honest feedback on how to fix the problem, versus trying to just sell me something. Will definitely use again
Kerrie Sullivan
Kerrie Sullivan
We used Maryland Mold and Waterproofing to remediate mold from our HVAC system and to water proof our basement. That meant coordinating an HVAC company as well as the waterproofing done by Maryland Mold and Waterproofing. Colin Hall was our representative and coordinated this beautifully. He was not only very professional but made sure the job was done to our satisfaction and even came out himself to put our basement shelving back together when the job was complete. He takes pride in his work and made sure we were well taken care of. We finally have a dry basement after years of rain water infiltration. I highly recommend Maryland Mold and Waterproofing and hope you have a similar experience.
Robyn Davis
Robyn Davis
Collin was professional, kind and kept us in the loop in a timely fashion
Randy Goguen
Randy Goguen
Maryland Mold and Waterproofing did a great job at performing mold remediation and crawlspace encapsulation on my house. I was pleased with all aspects of the process, from the initial estimate to project completion. I solicited estimates from three companies, including two national enterprises that advertise heavily. One never bothered to respond. The other sent someone to provide an estimate who was supposed to be a structural engineer (at least that was claimed in the company’s brochure), but had no such credentials on his business card. I had some concerns about possible structural problems, and the rep told me I needed a support beam and four jacks to buttress a “seriously under-engineered” floor. Subsequent attempts to follow up with that company met with no response. I decided to contract with Maryland Mold and Waterproofing and part of the contract included having an independent structural engineer evaluate the space. His evaluation concluded that there were no serious structural issues, just normal settling for a house that is 50 years old. The first MMW crew came out to remove all the moldy insulation and applied a fungicide in the crawlspace. Within a matter of days a chronic problem I have had with my sinuses that I thought I was stuck with for the rest of my life cleared up. A few weeks later a crew came to finish the encapsulation and install a dehumidifier. Both crews worked hard and efficiently in a very confined space and were courteous. I recommended the company to my neighbors, and MMW is doing the work on two more houses on my block.
Roger Cox
Roger Cox
Nick did a fine job of explaining our project and his team was here on schedule and did quality work with no problems. They treated the mold, encapsulated the crawl space and installed a dehumidifier and a turtl access hatch. Excellent work.
Ron Foster
Ron Foster
Great experience MD Mold and Waterproofing. The entire team was professional, responsive, knowledgeable, and did their jobs well. We have gone through a complete remodel of the old home we just purchased and have dealt with a million trades and contractors. The team from MD Mold and Waterproofing rose to the top! We'd highly recommend using them. Hats off to you, Nick and Colin, Freddy and the other gentleman who have made our basement water-free :-)
Roger Longenbach
Roger Longenbach
After our drain broke we discovered mold under the floor. Maryland Mold and Waterproofing provided a quote and was able to respond quickly after our agreement was signed. The folks were professional and courteous. Their efforts were much appreciated. They are definitely a company to consider if one has a potential mold issue.

Service Area

Maryland Mold & Waterproofing offers a variety of services from waterproofing to foundation repairs. We offer the following services in your area, basement waterproofing, crawl space encapsulation, sump pump installation and service, basement crack repair, vapor barriers and moisture control.