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How To Install Interior Mount Window Blinds

Interior mount window blinds mount inside the window frame opening, leaving the moulding trim around the window exposed. Although they allow some light around the edges of the blinds, they are a great choice if you'd like an uncluttered look that's very functional. Interior mounts also allow for more flexibility in choosing decorative window treatments and draperies.

Accurate measurement is the first step. Use a metal tape measure and keep a pad and pencil handy. The depth of the window sill - the horizontal measurement between the edge of the wall and the start of the window frame - is key. Many types of blinds will require a minimum depth for installation, usually about 2 inches. Next figure out what the narrowest part of your window is. It may look cleanly rectangular, but some windows may vary and you don't want your blinds scraping against the frame or getting stuck. Measure across horizontally near the bottom, middle and top and record the smallest measurement as the width of your window frame. For the length, measure the vertical dimensions of the opening. If you have a window sill that extends into the room past the wall, record the shortest length from the top of the window cavity to the window sill. If you do not have a window sill that extends out, simply record the measurement from the top of the cavity to where you wish the blind to hang.

Once you are sure that you have accurate measurements, order or purchase your selected blinds. Some manufacturer's will adjust these measurements for you to accommodate the necessary hardware, while others will direct you to make the adjustments yourself. Read directions carefully, and make sure to communicate with your vendor before finalizing your purchase.

If you install your blinds yourself, you will need your metal measuring tape, a pencil, a drill with the appropriate bits and the right kind of screws. Plaster, wood, concrete, etc will require different kinds of bits and screws, particularly for a heavy use item like window treatments. A level can come in handy if you want to check that your installation will be even. You should also consult any directions that come packaged with your selected window treatments and screws with assorted plugs or other accessories.

Mark your window casing with the pencil according to where the outer, visible edge of the support brackets will be placed. Remember when installing into wood to allow 1/3 inch or more from the edge to help avoid splitting. If you have somebody working with you, have them hold the blinds in the location, and you can test if the window treatments will move freely and properly. Hold the bracket to the location, and use the pencil to mark where the screws will go. Pre-drill holes if need be. Secure the brackets with the screws, and install the interior mount blinds. Test them a couple times to see if they are placed properly and are stable.





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