Installing a door that’s been cut too short can be a frustrating experience for any homeowner or contractor. But with some careful planning and a few adjustments, it is possible to remedy the situation without having to replace the entire door. In this article, we’ll walk through several options for fixing a door that’s been cut too short, starting with some quick answers to common questions:
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Quick Answers
Can I just cut the door trim shorter to make it fit?
It’s not recommended to cut door trim shorter, as this can throw off the proportions and look sloppy. The better options are to replace the door or add filler material.
What are my options for adding height to the door?
Some options are:
– Add a new wood filler strip along the top or bottom edge
– Replace the current threshold with a taller one
– Install a taller door jamb/frame
– Replace the door slab with a taller size
Is it OK if there’s a small gap at the top or bottom after fixes?
A very small gap of 1/8 to 1/4 inch can be acceptable and covered with additional trim molding. Anything larger than that may look unsightly.
Can I just cut more off the bottom of the door?
This isn’t recommended, as it could impact the integrity and function of the door. Better to add material to the top than remove from bottom.
Assessing the Door Gap
Before deciding on a solution, you’ll need to assess the size of the gap at the top of the door when closed. Here are the steps:
1. Close the door and latch it if possible.
2. Check the size of the gap between the top of the door and the door jamb or frame.
3. Use a ruler or tape measure to measure the gap at its widest point. Make note of this measurement.
4. Also note if the door is rubbing or catching anywhere along the sides or bottom. This could impact which solutions will work.
5. Consider when surveying the gap whether you want it completely closed or if a small gap of 1/8 to 1/4 inch is acceptable, as this will dictate the approaches.
Sample Data
| Door Location | Size of Gap at Top |
| Main entrance door | 1 1/4 inches |
| Bathroom door | 1/2 inch |
| Bedroom closet door | 1/8 inch |
As you can see in the sample data, depending on the specific size of the gap, the remedy may be more or less extensive. A very small 1/8 inch gap may only need trim covering, while a larger 1 1/4 inch gap likely needs more substantial fixes.
Short-Term Quick Fixes
If you need a quick, short-term fix for a door that’s cut too short, here are a couple of options:
Add Filler Material Along the Top Edge
One simple fix is to add some type of filler material along the top edge of the door to fill in the extra space. Some choices are:
– Wood shims – These thin shims made of wood can be glued into place along the top of the door. They are an inexpensive option.
– Wood filler strip – For a more finished look, a wood filler strip that matches the door trim can be cut and installed.
– Self-adhesive weatherstripping – Foam or felt weatherstripping with adhesive backing provides a quick fix.
The filler material should match the width of the gap or slightly exceed it. When installed, you won’t be able to close the door fully but it will cover the gap. This fix avoids altering the door itself.
Adjust Door Jamb with Shims
If the gap is moderate, shimming out the door jamb slightly with wood shims may raise the door enough to close the gap. Add shims along the top door jamb behind the trim molding. You’ll need to remove the molding to do this properly.
The only issue is that this solution may create or accentuate gaps on the side jambs. It requires adjusting the strike plate as well. It’s easy to do, but may not look perfect.
Longer-Term Solutions
For best results closing the gap of a door that’s cut too short, consider these more extensive solutions:
Replace the Door
The simplest option is to remove the current door that’s cut too short and install a new door slab of the proper size. This will provide the desired look and completely close the problematic gap.
You’ll want to measure carefully to get the right door height. You’ll also need to chisel out the current hinge mortises and drill new ones for the door replacement.
One advantage of this option is that you can upgrade the style or materials of the door if desired during the replacement.
Install a Taller Threshold
If the door gap is moderate, replacing the current threshold with one that is taller can potentially close the gap. Standard thresholds are about 1/2 inch tall.
You can find thresholds in heights up to 1 1/4 inches. Match one that corresponds closely to your door gap size.
This will involve removing base trim molding, uninstalling the old threshold, cutting the bottom of the door jamb, and installing the new taller threshold.
Add a Filler Strip to the Top of the Jamb
For a more finished look, you can add a wood filler strip along the top of the door jamb, essentially making the jamb taller.
Make the filler strip slightly thicker than the height of the gap. Cut and install it along the top jamb behind the trim molding.
You’ll need to first remove the existing trim, carefully pry off the top jamb, cut the filler to size, install and reattach jamb and trim.
Install a Taller Pre-hung Door Frame
If you want the flexibility to make a completely custom door fit, consider installing a pre-hung door frame and jamb kit in a taller size to match your ceiling height.
These kits allow you to precisely fit the door to the new taller frame opening. It also allows room to cut the door down more if needed.
This is the most complex installation option, but allows full customization for the perfect fit.
Tips for Installation
When making any alterations to an existing door frame, here are some tips to do it properly:
– Carefully remove trim molding with pry bar and put aside for reinstallation
– Make clean cuts – use sharp pry bar, utility knife, and saw
– Measure precisely for any new parts or fillers
– Use wood filler/putty for any gaps prior to reinstalling trim
– Drill straight pilot holes whenever installing screws
– Use finish nails and nail sets for an invisible look
– Reattach all trim molding with finish nails for a seamless finish
– Seal trimmed door perimeter with paintable caulk for clean look
– Go slowly and double check measurements during installation
– Use shims as needed to ensure plumb and level finished product
Conclusion
Having a door that’s cut too short can be an annoying problem when trying to complete a construction or renovation project. But with some careful measurements, the right materials, and proper installation, there are several effective and affordable ways to remedy the situation.
The options range from quick fixes like adding filler strips, to more involved solutions like installing a new pre-hung door jamb. Taking the time to make adjustments will result in a door that functions properly and looks good. With some patience and DIY skills, you can make even an imperfectly sized door work within your space.