Bottom up/top down (or top down/bottom up, the order makes no difference) blinds are different from normal window blinds. Normal window blinds have a single mechanism at the top of the window that allows the blinds to pull up and down (vertical window blinds). Bottom up/top down blinds, as the name might suggest, allows the window blinds to function in a similar manner. However, while the blinds may be pulled up from the bottom of the window to let in light, they may also be pulled down from the top to expose the upper portion of the window while keeping the bottom portion covered.
Bottom up/top down blinds actually function as two separate sets of window blinds. There is a rail in the bottom of the blinds and a rail in the middle of the window. Each rail also has its own pull cord. The pull cord on the right side of the window controls the bottom rail (and raising the bottom of the blinds up to the center of the window), while the pull cord on the left side operates the middle rail (pulling the top of the blinds down to the middle of the window).
Additionally, the entirety of a set of bottom up/top down blinds can be raised to the top of a window if the middle rail is raised to the top, and then the bottom rail is also raised up afterwards.
Some bottom up/top down blinds can be purchased with an automated control. This option is more expensive, since small motors will drive both of the rails. However, there are no cords to bother with, and the ideal amount of window can be revealed with the push of a few buttons on a remote control.
The extra cost of an automated set of bottom up/top down blinds may also be worth it if a person has small children or pets. In both cases the cords could be a choking hazard, or they could become endlessly tangled because they became a play toy.
About Window Shades
Window shades offer privacy and style. They can block out the light or tuck up out of sight to reveal the view...
How to Mount Top-Down Bottom-Up Shades
One of the more versatile products for windows today is the top-down, bottom-up shade. It offers privacy, yet allows you to regulate...
How to Restring Top-Down/Bottom-Up Cellular Shades
Cellular shades have a honeycomb construction that reduces heat loss through the window and provides ultra-violet protection. Treat top-down, bottom-up shades as...
How to Restring Cellular Cordless Shades
Cellular cordless shades are safe to use in the home, especially when small children or pets are present. They're durable, easy to...
DIY Top-Down/Bottom-Up Roman Shades
A modification of traditional Roman shades, top down/bottom up Roman shades blend the best of both worlds to offer the most convenience....
How to Lower Venetian Blinds
Venetian blinds are composed of horizontal, slatted blinds, usually made out of metal, wood, bamboo or plastic. When tilted down or up,...
How to Install Bottom Up Roller Shades
If you could use a little more privacy and you like the look of roller shades, install roller shades on your window...
How to Lower Window Blinds That Are Stuck at the Top
To fix blinds stuck in the upright position, you need to manipulate the pawl mechanism if tugging on the cord doesn't work.
How Do Venetian Blinds Work?
In contrast to Roman blinds or Austrian blinds, the mechanism of a Venetian blind is hidden behind metal, plastic or aluminum casings,...
Is It Better to Have Your Blinds Turned Up or Down?
The direction -- up or down -- to close blind slats is a matter of personal preference, but if you want more...
Window Shades That Pull Up From the Bottom
Typically, shades extend to cover a window by pulling down from the window's top edge. However, for some applications, it's more useful...
How Do I Restring the Pulley System on My Bamboo Blind?
Bamboo blinds are a great choice for homes these days, as they look great and are fairly easy to maintain and keep...