Most department stores, such as Walmart and Target carry mattress tops, although in order to ensure that a better product is being purchased, it may be smart to go to a furniture store that specializes in high quality furniture. Many of the mattress tops found in these furniture stores would include a warranty, and would be of better quality.
The foundation of a bed is what you put the mattress on top of, it is the bed it's self not including the mattress, headboard, foot board or any bedding.
The mattress pad is meant to be placed on top of the mattress and directly under the bottom sheet.
A bed skirt is designed to hang from the box spring or the frame of the bed, covering the area between the mattress and the floor. It is placed underneath the mattress, not on top of it. The purpose of a bed skirt is to conceal the box spring and any items stored under the bed, adding a decorative touch to the overall bedding ensemble.
30 inches
To the bottom of the foundation or the top of the mattress?
You can use a standard box frame mattress to be honest simply because the feather bed is added to the top of the mattress.
A platform bed is a wooden frame with drawers in it that the mattress sits on top of. This is a great space saving item.
This depends on the style of your bed frame. Some bed frames have a built in feature for adjusting the height of the bed but this is not particularly common. If you just want the mattress to sit higher you could purchase another box spring and put the mattress on top of two. If you want the entire bed to sit higher, maybe so that you can store items underneath, there are risers you can find at your local superstore (Walmart, Target, etc.) that you can place the legs of the bed frame in (if it is that kind of bed) and that will raise it by about a foot.
When you say mattress that is the top. Boxspring is the bottom. So im guessing you have mattress and boxspring extra long. The answer is yes. A twin extra long mattress will fit a regular twin bed frame. The length is just longer not the width.
A mattress is a soft slab of foam or some other springy material that you put on top of a bead base to make the bed more comfortable to sleep on.
Pillow tops are already a form of mattress pad, so you shouldn't need an additional one on top of it. However, consider getting a thin mattress pad to balance out your weight across the bed.
Both are correct but refer to different things. "In Bed" refers to a when a person/object is under the sheets of a bed, but above a mattress (and possibly other sheets). "On Bed" refers to when a person/object is on top the bed.