Everything you need to know about crawl space ventilation

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Everything you need to know about crawl space ventilation
Crawl space ventilation is important when it comes to the quality of air in your home. A properly ventilated crawl space will have a dehumidifier fan blowing out a crawl space vent. Improperly ventilated crawl spaces will just have a hole in your foundation with a screen over it.
Should crawl spaces be vented or sealed?
Sealing a crawl space can help prevent moisture problems, improve energy efficiency, and protect the home's structure from damage. Sealing involves installing a vapor barrier on the ground and walls, insulating the walls and rim joists, and sealing any gaps or cracks that allow air to enter the crawl space.
Is the stack effect good or bad?
The stack effect can also occur in crawl spaces, where warm air rises and escapes through gaps and openings, creating negative pressure that draws in cold air from outside. In crawl spaces, the stack effect can lead to a range of problems
Will a dehumidifier dry out crawl space?
Yes, a dehumidifier can be an effective way to reduce moisture levels and dry out a crawl space. Excess moisture in a crawl space can lead to a range of problems, including mold growth, wood rot, and pest infestations. By removing moisture from the air, a dehumidifier can help prevent these problems and improve the overall health and safety of a home.
Check out our blog post - Everything You Need To Know About Crawl Space Ventilation - www.therealsealllc.com/blog/e...
Key moments:
00:44 The stack effect
01:11 Mold and mildew
02:22 Crawl space vent
02:48 Crawl space encapsulation
02:56 Drain tile system
03:42 Dehumidifier
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Keywords: crawl space ventilation, crawl space cover, crawl space vents open or closed, how to seal crawl space vents, The stack effect, Mold and mildew, Crawl space encapsulation, Drain tile system, Dehumidifier
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#foundationrepair #basementwaterproofing #concreteleveling #basementrepair #crawlspaceencapsulation #crawlspacerepair #crawlspacevent

Опубликовано:

6 фев 2023

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Комментарии : 14

@emwagner Месяц назад

You mentioned putting the plastic sheeting into the crawl space, does this include the floor, or just the CMU walls?

@Therealsealllc Месяц назад

It includes the floors, as you want to create a protective barrier between the dirt/gravel floor and the rest of the space.

@Figs4Life Месяц назад

Hi there sir, I live in Long Island New York near the water, but we rarely get any floods here; but also because we are so low, the foundation is mostly wet. I'm brought 2 foundation companies to check out my crawl space And one of the companies told me to eliminate all access windows and leave only 1 and make the crawl space air tight, and put a moist barrier on the ground, foam spray on the walls and installation on the ceiling. The other company told me to leave all 3 windows and put automatic ventilation windows with a commercial dehumidifier and a sub pump, and he also told me to put the same floor barrier with foam on the walls, but he told me I don't need Insulation on the ceiling. Which one should I do? Also the first company told me that I should replace all brick support columns underneath with metal adjustable rods and the other company said to leave the support as it is. They are so opposite and I don't know what to do, and they are both experts with lots of years of experience with high reviews. What would you recommend sir?

@Therealsealllc Месяц назад

Hi There @Figs4Life! While I do not know your specific situation, as I have not seen it, I can offer some recommendations to help you make your decision. When it comes to waterproofing, insulation on the ceiling of your crawl space will not do very much. What it will do, though, is help keep the floors from being cold all the time. Cold crawl space air cools the 1st story floors, and the insulation will help prevent that. So if you have cold floors and want that fixed, ceiling insulation is the way to go. If not, don't worry about it. The windows can stay, but there isn't much use for them other than as an egress window. If they are too small to be egress windows, then you don't have much use for them in the crawl space. Extra windows means lower insulation value, which means higher utility bills. Is the house settling? Sloping floors in the home? The brick columns are an older construction method for homes, but if they're not moving, they don't need to be replaced. If they are moving, then it's time to consider replacement. As for the reviews of the company, be sure you read the reviews. Especially any complaints on the BBB and how they were handled by the company. That's the easiest way to see the customer service when things don't go perfectly. I hope this helps! Send me any more questions you may have!

@Figs4Life Месяц назад

@@Therealsealllc I appreciate your response, thank you. I have one more question Do I need a dehumidifier? One company said I don't need it the other company said I need it and a pump. The First company that said I don't need a dehumidifier nor a pump gave me an estimate of $21000 while the other company that said I need it including a pump gave me a quote of $17 500 How come the second company is cheaper ? Am I being ripped off? Micro space is about a 1000 square feet, They have to remove old insulation on the ceiling, level some areas in the crawl space, and take out some debris. The crow space height ranges from 3-5 feet

@Figs4Life Месяц назад

@@Therealsealllc Where are you guys located? Do you guys do jobs in Long Island New York?

@Therealsealllc Месяц назад

@@Figs4Life Different companies surely charge different amounts. You do get different levels of service, warranties, etc. But there are most certainly times (especially in the busy season) that you will see some companies drastically raise prices to see what they can get. Best way to choose the right company is to compare (and read) the reviews across Yelp, BBB (especially to how they respond to the complaints), and Angies. Google reviews are too easy to fake, so I would not use those as a deciding factor. A dehumidifier is always a good idea, but not always necessary. Thinking of the long term health of the area, it would be best to get a dehumidifier. But again, I haven't seen your specific situation, so that is just general good advice. Does that all make sense?

@Therealsealllc Месяц назад

@@Figs4Life I wish! We are in Chicagoland.

@sommasculpture 8 месяцев назад

Do you need to leave one vent open for the dehumidifier or can you close everything up and just run the dehumidifier in there?

@Therealsealllc 8 месяцев назад

You can close everything up and run the dehumidifier in there. Alternatively, you can hook up an exhaust vent from the dehumidifier and connect it to the vent to exhaust that air outside. In that case, you need to be sure the exhaust pipe and vent are completely sealed and there's no free flowing air coming in from the edges.

@sommasculpture 8 месяцев назад

@@Therealsealllc thank you

@Therealsealllc 8 месяцев назад

@@sommasculpture happy to help!

@NordicaTundra 4 месяца назад

If vents stay closed won't radon levels go up?

@sommasculpture 4 месяца назад

@@NordicaTundra if you have radon you need to install a mitigation system. If there's no radon it doesn't matter. It's very cheap to test for radon. You don't need to hire an inspector. Just order the kits that the inspectors use or get a digital monitoring unit