Cold floors are the complaint we hear most often out of Davis County. The house heats fine, the thermostat is satisfied, and the floor is still unpleasant to stand on in socks. In smaller postwar homes built over crawl spaces, that usually comes down to what is, or is not, in the floor framing and at the rim around the outside of it. Newer Clearfield builds have their own version of the same story. Call 801-644-9000 and we will connect you with contractors who will actually get under the house.
A crawl space sits close to outdoor conditions, particularly a vented one in the middle of winter. If the insulation between the floor joists has fallen, sagged, or been pulled down at some point for plumbing work, then not much separates the floor above from that cold air. This is extremely common in older homes, because the material was often held up by nothing more than friction or a few wires strung across the bays, and forty or fifty years of gravity eventually wins that argument.
The first thing to do is look. Somebody needs to go under the house with a light and report what is actually down there: whether insulation is present and in contact with the subfloor, whether it is wet or moldy, whether there is a ground cover in place, and whether there are signs of standing water or pests. That report is worth more than any quote given without one. If the crawl space is wet, insulation is not the first repair to make. Drainage and moisture control come before it.
Around the perimeter of the floor framing, where the joist ends meet the outside wall, there is a band of framing that is often the leakiest part of a house this size. It is thin, it faces outdoors, it sits directly on the foundation, and in older homes it is frequently bare. Every joist bay is a separate small opening, and cold air entering there runs along under the floor and up into the walls. It is a very small amount of square footage doing a disproportionate share of the damage.
The good news is that it is a contained and fixable area. Sealing and insulating each bay at the rim is a well-defined job that does not require tearing anything apart, and it usually happens at the same time as other crawl space work. Ask whether a quote includes the rim, because it gets left out when pricing is based on floor area alone. If your house has a basement rather than a crawl space, the same band of framing exists at the top of the foundation wall and deserves the same attention.
Clearfield has plenty of newer construction, and those houses raise different questions. The floor framing is usually fine. What we find instead are unsealed transitions: the cantilevered floor under a bay window or a second-story overhang, the wall shared with an attached garage, the ceiling over that garage where there is living space above it, and the mechanical room where a lot of penetrations gather in one place. Basements in newer homes are frequently insulated on the walls but never sealed along the top of them.
If you are finishing a basement in a newer house, that is the moment to get it right, because everything is open and accessible. Deal with any moisture first, insulate the walls in a way that will not trap it, and seal the rim before framing goes up in front of it. All of that is far cheaper at that stage than revisiting it later. If you are not finishing anything, the highest-value work in a newer home is usually sealing attic penetrations and garage transitions rather than adding more depth overhead.
It depends on how the crawl space is built, and it is not a decision to make from a web page. Some crawl spaces are designed to be vented and some have been deliberately sealed and conditioned, and the right handling of moisture differs between the two. Closing vents on a damp crawl space can make matters worse. Have someone look at yours, check the ground cover and the drainage, and advise based on what is actually down there.
Both approaches get used, and the right one depends on moisture conditions, whether ductwork and plumbing run down there, and whether the space is vented. Insulating the floor keeps the crawl space outside the heated part of the house; insulating the walls brings it inside. Neither works well over a wet crawl space, so moisture comes first either way. Ask the contractor which he is proposing and why he prefers it here.
If you plan to finish it soon, wait and do it as part of that work, since everything will be open and it costs less to do once. If finishing is years away and the basement is cold enough to affect the floor above, sealing and insulating the rim joist on its own is a modest job worth doing now. That band leaks most, and the work does not depend on how you finish the space later.
Cold rooms, drafts, ice at the eaves, or an attic you have never been in. Any of it is a place to start.