1. How to Extend an Interior Door?

    Want to draught-proof your home? Looking for easy ways to fix unwanted gaps between doors and the floor that let cold air in and warm air out? Check out our handy infographic to find great ideas on how to extend interior doors without replacing them!

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    To install interior door with an exact length of 1/2-inches from the floor sounds like a job for a professional carpenter. The four options available to him or her for extending length and to install interior door is a simple job to accomplish for any layperson, with no knowledge of carpentry.

    Door Extension Options

    3 ideas he or she can follow for adding a wood extension is as follows:

    • Adding a rubber door draft stopper
    • Adding a strip of insulation along the bottom of the door, or
    • Adding a removable door draft snake stopper.

    He or she must take into consideration the type of door they are trying to extend, before they install interior door. Is the door a solid wood door or a hollow core door? At any rate, it is cost effective to extend the door rather than buying a new door. A solid wood door is by far the best door to add an extension. Rubber door seals are a way to extend the length of a door if he or she does not want to do carpentry work. The metal strips with rubber attaches to the bottom of the door with screws.

    Why Some Doors Have Bottomed Gaps

    The removal of carpeting and installing new carpeting with a lesser pile, and installing tile or wood flooring can leave a wide gap at the bottom of interior doors. Older homes usually show considerable settling of the foundation throughout the years and this may be the reason for the gap at the bottom of the door. This gap can be evenly spaced between the floors or unevenly spaced, which becomes a real eyesore after he or she install interior door.

    Adding Wood Door Extensions

    Make sure, new wood extensions match the thickness of the door and there are no additional gaps between the door and wood extension. The new strip of wood must be the same as the door. Make sure the grain runs in the same direction and matches as close as possible to the door, with exact width and thickness.

    Measure before removing the door and allow for 1/2-inch of space between the extension and the floor.

    Remove the hinge pins from the door hinges and lay the door safely across two sawhorses

    Glue the wood together and use dowels to secure the pieces permanently. Sand, paint, varnish or stain the wood extension as close as possible to the door's color

    When the pieces are completely dry, drill four holes through the entire extension piece and gently pound into the holes the glued dowels, securing the extension into place using clamps until glue dries

    The last step is to drive screws into the clearance holes until tight and secure and the screw heads are even with the wood, removing any excess glue from the wood

    The finished job looks better if the door is a solid wood door, versus a hollow core door offering a nearly perfect looking door. A seam will be evident, however, if he or she sands and coats the extension as close to the door's color the seam is not as evident.

    Necessary Tools

    Another good tip to assure that he or she does a good job with their door extension is to have all needed materials at hand so they do not have to leave the job to seek a tool they do not have on hand. The tools and materials needed include:

    • Wood to match the door
    • Drill, preferably cordless
    • A drill bit, countersunk
    • A table saw
    • Circular saw
    • Wood glue
    • Correct size dowels
    • Paint, stain or varnish

    If the problem with uncovered gaps can't be solved by door extension, you should think about replacing your old doors with new units. Take a look at the assortment of EuroSeal doors to find the one that fits your home best.


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