The Door-Stud is a door installation tool that revolutionizes how builders install pre-hung or slab doors. The Door-Stud door installation process allows for a single person, hands-free door installation; reducing typical installation labor by 50%! Get your timber — commonly 100mm x 50mm — and cut to the correct length. Typically a doorway will be to the left or right so you only need to cut one length of timber. You need to leave a gap of around 65mm for the lining of the door. So if you are installing a 762mm x 1981mm door — 2 ft 6 inches x 6ft 6 inches in imperial — the opening needs to be around 825mm x 2046mm.

Measure the distance between the sole plate and top plate at your king stud markings. This measurement will typically be 96 inches, which is the standard stud length. However, framing can shift, and imperfections in construction can lead to small differences. Measure just in case. For a more secure and stronger fit, double up on the studs at the door opening. This is not essential but if you are fitting heavy solid wood doors or fire doors it is a good idea. Remember to account for this when working out the position of the door opening.

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If you have any wiring that needs to be put in the wall space get a suitable sized spade drill bit and drill holes through each stud and feed through the wires. When building any stud wall it is always a good idea to install sound installation. You can use acoustic plasterboard instead of standard plasterboard as this is denser so helps stop sound passing through. If the door is to be placed in the middle, mark your timber accordingly and cut, leave the appropriate gap and cut the timber for the other side of the door. When purchasing raw lumber to frame your door, you can choose from pine, alder, fir, or birch wood. These types of wood are suitable for interior framing—pine is the most popular and readily available, and it’s typically the most affordable, as well. The plywood you’ll buy will mostly act as a spacer, so you can save some money by buying the most affordable 1/2" sheet available. Just make sure you get real plywood and not MDF.

Finally you need to add noggins. These are small pieces of timber that brace the studs and give them more strength. Use the same timber as you used for the studs. Measure the gap between the studs, mark and place about half way up the stud. There’s an art to putting plasterboard onto the frame, so make sure that you follow our cutting plasterboard guide to get a good clean cut that will make it easier when it comes to plastering. Next, add two inches to the width measurement and 1-1/2 inches to the height measurement to determine your rough opening size. You’ll need this gap for the wooden shims you’ll use to level and install your prehung door. Now measure the width of the door opening at the position where the noggin is going to be fixed and cut to length. Now fix into studs with screws at an angle and make sure it's level. You now have the outline of the door frame. Now measure two small studs to go between the noggin you just put up and the ceiling plate. This will brace the noggin and stiffen up the frame. How to build a stud wall with a door: what’s next?

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Once you have measured up and got the gap right, you need to screw the floor plate — or plates — into the floor. Note that the larger area i.e the 100mm side, lies flat on the floor, and use 90-100mm screws. Fix from both sides going through the stud into the noggin. Now measure up the next noggin and cut to size. Place this in the next stud gap just below the level of the first noggin and fix as before. Now repeat the process until you have noggins inside all studs. Using a measuring tape, measure the width and height of your new door, including the frame. The standard door size for interior door frames is 80 inches by 32 inches, but the width can vary between 28 and 36 inches. Make sure you have the exact measurements of your particular door from edge to edge. Typically you do not need to apply for planning permission for building an internal stud wall but there are a few rules you should follow. Fire regulations and sound insulation are two to consider. If you’re uncomfortable doing the work, don’t have the necessary tools, or are concerned about how installing a new door will affect the structural stability of your home, call in a professional. Calling in an expert is especially important if you’re installing a door in a load-bearing wall, as any mistakes could cause a portion of your home to collapse.

Using a framing nailer and 3-inch nails, toenail the king studs into place, connecting each to the plate boards. Toenailing a board refers to driving in the nail at a 45-degree angle, which is necessary if you don’t have access to a wall that’s already installed. If you’re framing your door before putting up the wall, nail the king studs from the top and bottom instead. Now you need to add the wall studs. Start by screwing a stud to the wall on both sides. Measure up and make sure to get a good tight fit. Now measure 400mm centres for the studs if using 9.5mm plasterboard and 600mm if using 12.5mm plasterboard. Here we are going to give an outline of how to build a standard internal stud wall and leave a space for a door. A typical choice is a softwood with pine being a popular choice as this is reasonably cheap, easy to work with and hard wearing enough for the job at hand. Do I need planning permission for an internal stud wall?

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The final piece in the jigsaw is to add the studs and noggins to complete the door opening. Now measure the height and mark where the top of the door opening will be. If using a standard 1981mm door remember to add 65mm to create the necessary height — so 2046mm. You will also need a door lining to cover up the edges of the frame and butt up to the plasterboard. These are typically three pieces of wood with door jambs. You will typically need 25mm depth wood, which will leave around 15mm to fit the door. What is the best type of wood to use for stud walls Your door frame is now complete. Next, you can set your interior door and finish off by installing drywall and installing door casing. Cut a piece of 1/2 inch plywood the same length and width as your two-by-eight boards. Sandwich the plywood between the boards and connect all three pieces with framing nails. You can use any good quality wood for the frame of a stub wall, but as it won’t be seen it just needs to be solid enough to support the plasterboard and door.