You can expect the stone floor of your screen porch or the basement linoleum laid on cement to be cold and carpet is the logical warmer.
Flooring for cold floors.
Luckily there are ways to combat this chilly predicament.
Radiant below surface heating is the most expensive option but also the most effective.
Glue carpeting to your subfloor material to minimize moisture penetration.
Vinyl is a practical choice for floors above or below grade in any type of climate.
As an added negative impact of cold floors the cold conditions in your home will cause your heating system to work extra hard to combat it leading to an increase on your utility bills.
Floors of ceramic stone or concrete are the worst culprits with hardwood a runner up.
Insulating the floors rim joists and headers can be an effective way to warm these floors.
Some issues are structural and logical.
It radiates heat through the underlayment up to the top flooring layer and through the rest of the room helping your favorite spaces feel toasty even during cold.
Keep cold air out warm air in.
Determining the cause of cold floors however is usually fairly simple and can be addressed without massive expenditure.
A cold floor is also an indication of a drafty uncomfortable house which makes your home a less desirable place to live.