Best way to do this tape off the floor with blue painters tape. Then fill the gap with caulk. Then use a new squared putty knife to push the caulk into the gap smoothing it out making it flush with the face of the baseboard. Once dry you can paint it to match the baseboards.
It shouldn't touch the floor. If it's on the floor it can absorb moisture. Drywall falls apart if it gets wet. It can, and probably will, also mold when it gets damp and wet pretty quickly. Space between the floor and bottom sheet is left to adjust the drywall sheets so it's straight and level.
Fixing a Large Gap Between the Wall and Floor
If the gap is smaller than 1⁄2 in (1.3 cm), fill it with silicone caulk. Fill gaps larger than 1⁄2 in (1.3 cm) with a few pieces of wood, foam insulation, or spray insulation. Nail a baseboard or quarter round over the filled gap, then caulk around the baseboard.
This space, typically around 1/2 inch, serves several important purposes: Moisture Protection: Keeping drywall off the floor helps prevent moisture from wicking up from the floor, which can lead to mold and damage, especially in areas prone to moisture, like basements or bathrooms.
The gap is supposed to be there. To prevent the drywall from wicking any water that gets on the floor. Don't caulk it.
If you notice gaps forming between the walls and floors in your home, it's a sign that something is wrong with your foundation. These gaps not only look unsightly but can turn into serious structural issues if left unchecked.
Joints are too tight
Without enough space when this happens, you'll get cracks. Keep a 1/8-inch space between sheets during installation to keep this from happening. Using a guide can help make sure your sheets are properly spaced throughout the job.
While the flooring that is laid down after the drywall is installed will correct imperfections in the floor, any small hill in the concrete will cause a full sheet of drywall to be out of level if the drywall is placed directly on the floor.
Differential foundation settlement can occur for various reasons, such as changes in soil moisture due to weather conditions and poor soil compaction during construction. Another potential cause of gaps between the wall and the floor is poor workmanship during construction or remodeling.
If you have smooth finishes on both the wall and ceiling the typical process is to use tape and joint compound. If you are using paper tape the process is to apply some joint compound first to bed the tape into and then apply another coat (or two or three) to get it smooth enough to sand it to the final finish.
Number of Screws Per Sheet of Drywall
Use about 32 drywall screws per sheet of 4-foot by 8-foot drywall installed horizontally on a wall. This total is comprised of four screws on the five middle studs and six screws on each of the two sides.
The low-pressure foam will fill the space just fine without the risk of changing the alignment or function of the fixture. You may have to apply a little more, so take your time and build in layers rather than trying to close the entire gap at once. Don't let gaps and cracks make your home hard to heat or cool.
The front edge of the box must be flush with the finished wall surface, usually 1/2-inch-thick drywall. Some boxes have depth gauges. You can use a scrap of drywall to position the box.
You can hang drywall vertically (tall and narrow) or horizontally (short and wide). Vertical drywall is easier to install, aligns with studs, requires less cutting, and fits tall ceilings. Drywall has more seams, is more likely to crack, and is weaker against horizontal pressure when hung vertically.
While it is possible to install flooring without baseboards, it's important to consider the practical and aesthetic implications of doing so. Baseboards serve essential functions like covering expansion gaps and protecting walls, but for homeowners seeking a minimalist design, there are alternative options available.
Always leave a 1/2-inch gap at the floor.
Create Tight Drywall Joints
Professional drywall installers allow for ⅛-inch space between sheetrock placement, and this allows for expansion and contraction for the frame of the building, avoiding cracks and damage to the drywall. Remember, it is easier to fill a gap than cut and repair broken drywall.
Hang the Ceiling First
This makes it much easier to manage and attach the panels since you will not have to fumble around with the screws, measuring tape, and so on. Screws for drywall lids should be placed no closer than 16” from the wall. This allows the drywall to have a bit of flexibility to prevent ceiling cracks.
If you think tightening your drywall joints are a good thing, it's actually not. Tightened drywall joints risk breaking the drywall in unexpected ways since it will prevent the expansion and contraction of the framing members. This, in turn, can crack the drywall joints that are too tight.
If you use the double-drywall technique and put a further layer of sound-dampening material or compound between them, you'll have a quieter area. The added layer of drywall and compound reduces vibrations and (consequently) cuts down on the sound that travels through the walls.
After taping and smoothing drywall, wait one day to allow the mixture to dry overnight. Next, lightly sand off any bumps before applying another coat of mud.
One key difference between the two is that sheetrock is a brand name of drywall made by the United States Gypsum Corporation. Another difference lies in their production process; sheetrock has a slightly denser core than drywall due to the addition of a small amount of wood fiber to the gypsum core.