33 votes

Wiring a reliable temperature switched outlet

Unless you go to more expensive industrial products, you'll have trouble finding thermostats that operate reliably at near freezing temperatures. Using a space heater to heat up the entire crawl ...
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31 votes
Accepted

Wiring a reliable temperature switched outlet

No, you can't do anything like that at all. That's a suicide cord. Meaning it has 2 plugs on it, and in certain conditions the prongs of one can be unplugged and live. Nothing should ever have 2 ...
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17 votes
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GFCI tripping on overload?

Overloads don't trip a GFCI. Period. If there was an overload, it would trip the actual circuit breaker. Since this is a GFCI/receptacle (as opposed to a GFCI/breaker) and the GFCI trips, that is a ...
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8 votes

What is the minimum height to a crawl space, and where did you get that information?

The Code requires a minimum of 18” clear from the bottom of wood floor framing to the ground. (See ICC Figure 403.1 (3).) I remember seeing that the bottom of beams can’t be within 12” of the ground, ...
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  • 22.5k
7 votes

What is the minimum height to a crawl space, and where did you get that information?

There is no direct answer as far as building codes are concerned. A crawlspace is a designated area under the floor that allows for your house to not get flooded. That it allows you access to ...
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  • 46.2k
7 votes
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Is there a reason to replace 50 year old metal ducting in the crawlspace with modern insulated flexible ducting?

I see no reasons for replacing the existing ductwork with flexible insulated ducting unless the existing ducting has rusted out. I would just re-insulate with 3” fiberglass wrap if the existing metal ...
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  • 2,693
6 votes

Can I have two storeys in a 16 foot space?

You have two issues to contend with. First is that 16 feet is just a bit too tight for two floors. Sure, we usually use 12 inch beams but that's just the structure - you need an actual floor on top ...
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  • 1,100
6 votes
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Bathroom exhaust vent into crawlspace

No, at least not under the international residential code (IRC): M1501.1 Outdoor Discharge The air removed by every mechanical exhaust system shall be discharged to the outdoors in accordance with ...
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5 votes

Wiring a reliable temperature switched outlet

It seems to me the biggest problem is if your heater doesn't turn on and you don't know about it, right? If it fails to turn on but you do know about it, you can address the problem. As such, if it ...
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  • 664
5 votes

Wiring a reliable temperature switched outlet

What's available here in the UK may be a bit different to what you can get, but this might guide you a bit. We have mains-rated thermostats designed to bring on gas-fired heating systems and protect ...
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  • 3,964
5 votes
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What's this wire coming out of my crawl space?

If you have a clipped end, then it shouldn’t do any harm to clip it a little more to get it out of the way. That said, it’s possible that it’s got current. Best case would be to positively determine ...
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4 votes

How should holes in a crawlspace liner be fixed?

It is a common practice to patch seams and holes in the vapor barrier with tape. The type of tape you need is often called house wrap tape. You can get it at your local home improvement store. If you ...
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4 votes

Wiring a reliable temperature switched outlet

it may be possible to put insulation in such that the pipe is insulated from the outside/crawlspace but not from the house. That way, the heat from the house will keep the pipes warm. I had to do this ...
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4 votes

Is this open supply duct in my vented crawl space necessary?

Without addressing the moderately unanswerable "do I need this duct" since that depends on a lot of factors specific to your house/insulation/comfort/budget/etc. Moderately standard freeze ...
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  • 137k
4 votes

Best/easiest way to install access door to dead space in house

I'd recommend a prehung knee-wall door. A prehung door is already on hinges in a door frame. A small 24 x 48 door would be very manageable. You can buy them online in various sizes. I understand you'...
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  • 7,589
4 votes
Accepted

HVAC Condensate draining into crawlspace

Draining to the sump pit is a common choice. Another method is to use a small, automatic condensate pump to lift the water up high enough that it can be directed to another drain.
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  • 3,088
4 votes

Trying to get advice on how to fix missing cinder blocks in my crawl space

I disagree with @Freeman, you are not the only one who can decide if it’s worth fixing the area with the missing blocks. The code can help determine if you need to fix it too. The code requires an ...
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  • 3,595
3 votes
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How to seal HVAC ducts running through old window to addition?

assumptions from what's in your photo: 1) it looks like the right side of the opening is your access, and the ducts are rigidly installed. 2) the crawlspace looks unheated, as the ducts seem to ...
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3 votes

What protection is needed to access the crawlspace under the house?

Mandatory: Eye protection. Plastic safety glasses or something like that to prevent dirt getting into your eyes. Dust mask or respirator. You don't want to breathe in the dust/bad air in that area. ...
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  • 623
3 votes
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Do outside faucets need to be winterized in a home with a conditioned crawlspace?

Varies with climate/temperature and specifics of the faucets/plumbing. We've had heated basements for a long time, so nothing all that new here. If they are frost-free sillcocks, probably nothing is ...
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  • 137k
3 votes

Properly Attach Cabling To Joists

There are staplers meant for wiring that are great for situations where you don't have too much room for a screwdriver or to swing a hammer. The Arrow T25 is one model, but there are other options out ...
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  • 1,669
3 votes

Adjustable steel column is raised too high - can I lower it?

Jacking buildings looks simple, but can be complex. I've done quite bit of it for a non-professional, but I happen to be related to a Licensed Professional Civil Engineer who directed the work I've ...
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  • 137k
3 votes

What is this rocky area in my crawl space wall?

It's a "rock pocket". The foundation wall is made of cement (a powder), water and rocks. They are suppose to be mixed throughly before "placing" in the forms. This either didn't get mixed properly or ...
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  • 22.5k
3 votes

What type of crawlspace setup do I have?

I have seen this done in our area to keep the pipes from freezing and the floors from being cold. On the homes that do this they usually plug the foundation vents for the winter. Many years ago ...
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  • 97.9k
3 votes
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Leveling the sagging side of the home

Sure you can fix this, but I wouldn’t opt for the “shelf” idea. Typically, in a post and beam foundation, all loads are transferred directly to the soil. Installing a “shelf” will put thrust on the ...
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  • 22.5k
3 votes

What's the best way to keep humidity down in crawl space?

An alternate method avoiding high electricity bills and the necessary water drain for the dehumidifier: Installing a fan of an old PC at the Luv side, connected to a small power supply from an old ...
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  • 2,358
3 votes

What is the minimum height to a crawl space, and where did you get that information?

In Europe there is apparently safety regulation that forbids companies working in crawlspaces lower then 60 cm. I found out when I had a gas-man come into my house for a quote. He told me he could not ...
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  • 191
3 votes

Is a too-shallow foundation allowing excessive water into my dirt crawl space?

Water flows in the direction of least resistance. Moisture is either coming up from below (a rising water table) or its coming from the surrounding ground water in the saturated soil, or both. If ...
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  • 22.5k
3 votes

air gap between insulation batts and subfloor

Leave it alone. There's nothing wrong with this, especially in a subfloor. More air is more insulation, and in this case the stratification means here's not going to be much in the way of convection ...
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  • 137k
3 votes

Can only use small sump pump basin in crawl space, what can I do to prevent short cycling?

Your "basin" need not be sold as a "basin" - the good old fashioned, fits very easily through limited access, pile of bricks or blocks that you use to line a hole that you dig (of ...
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  • 137k

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