Slide the third shim back and forth under the other two to change their angle with respect to the trimmer. Note: If you have done this on the hinge side, double check that all three sets of shims are plumb before installing the door. Cookie banner We use cookies and other tracking technologies to improve your browsing experience on our site, show personalized content and targeted ads, analyze site traffic, and understand where our audiences come from.
By choosing I Accept , you consent to our use of cookies and other tracking technologies. How to Install a Prehung Door. Pinterest Email Pocket Flipboard. David Carmack A door is a precision instrument.
What Is a Prehung Door? Gregory Nemec. First I researched lots of different trim styles. I ultimately decided I wanted to match the same trim as my window in the same room. Here is a picture of my window. After deciding on my trim, I headed to the store and picked up my supplies. I decided to use primed MDF molding. There are several options you can choose from. I have linked all of the supplies, including materials and tools I used — just click here.
After I got everything I needed, I made my measurements and marked my margins around my door frame to plan where my trim would lie. This marking is a guide for where I will be installing the trim around the door.
After I measured, I was ready to make my cuts. The first pieces to install were the side trim pieces. I measured from the floor to the top mark of my door frame for both sides.
I cute my trim at a straight 90 degree angle using my miter saw. Then I used my nail gun and 2in brad nails to secure the trim into the studs. After you are done it will look something like this…. Next, I was ready to put up my remaining three trim pieces on the top of the door frame to finish the job. I measured from the outer edge to the opposite side outer edge of my vertical pieces of installed trim. I took this measurement then added an additional 3in. The door is now ready to insert into the rough opening.
Always measure the opening prior to setting the door to verify the height and width will allow the door to fit, along with some adjustment space. This will allow space for the carpet to be tucked under the jambs. It will also provide some adjustment if the floor is not perfectly level. Step 3: Install the Door Starting at the top hinge, match up one of the lines the bracket with the level line drawn in step one.
Screw the door to the wall using the drywall screws provided. Work your way down the hinge side of the door, making sure to use the same reference line for each of the 3 hinge brackets. Continue tinkering until the reveal along the top is uniform.
On the latch side of the door, bring the jamb flush to the adjacent drywall. Once finished, nail through the jamb where you have shimmed. Now place additional shims six inches from the bottom of the door, as well as above and below where the strike plate will go. So long as the reveal remains uniform, proceed to nail the jamb at each position where you have added shims. To finish, go ahead and put a few more nails through the shims you nailed previously.
Your pre-hung door is now level and plumb, with a uniform reveal!
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