Exterior Patio French Doors - with bore holes. Exterior French doors are most commonly used to access outdoor living spaces, like a sunroom or patio, or leading out to the backyard.
They offer a stylish way to make a seamless transition from one space to another. Double doors for the front of your home makes for an elegant entryway. You can choose an exterior set of doors that is prepped similarly to the interior doors with bore holes on one side, but if you want to add a little extra security, make sure you have a second bore hole to house a deadbolt. A single cylinder mechanical deadbolt will do. Some homeowners prefer to install a double cylinder deadbolt for even more security with glass doors.
Beneath the deadbolt, you can choose a keyed knob or lever. Exterior Double Doors - with 3 bore holes. For a more formal appearance or when your door has three bore holes, choose a handleset. On the inactive side of the door, you may install nothing at all. In other words, if you purchase a Schlage Century entry handleset with deadbolt for one side, you might also get a Century inactive handleset for the other.
Exterior Double Doors - with Electronic Locks. What about electronic and smart locks? All of our electronic and smart locks are compatible with standard doors so that means you can install them on your French or double entry doors the same as you would a mechanical deadbolt. If you only have two bore holes, you can add a passage knob or lever below your smart or electronic lock.
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Categories 09 How to choose door locks for French doors. How to choose door locks for French doors. Pre-shopping checklist Before you choose your hardware, there are a few things you will need to note about your door. If you decide to order hardware online, be careful to note how many knobs or levers are included in your purchase. Everything in that article applies here as well.
The specific security weakness of a french door comes from the fact that the two doors meet in the middle. Because the passive side of the door is seldom used, it is secured into the top and bottom of the door frame.
Most commonly this is done using flush bolts installed in the edge of the passive door see photo. The active door is then locked in place, by locking it into the secured passive side of the door via a deadbolt.
This method of securing double doors is the most common used and relies heavily on the passive side of the door being secure at all times. Should the passive side of the door not be secured to the door frame, the two doors can simply be pushed open without any resistance, even though the deadbolt of the active side is locked into the passive side it will just slide out as the two doors are pulled open.
The photo below illustrates this point. It is viewed as if looking down on the door from the top. However, the passive side of the door can easily be unlocked. There are numerous YouTube videos showing a variety of techniques to unlock a double door. All it really takes is a thin screwdriver, drywall hammer, or even a heavy coat hanger to bypass the door locks. If you position any thin, rigid device into the seam between two doors, you can use it to latch the flush bolt, and then slide it to the unlocked position.
It takes just a few seconds to open double doors using this technique. Important: Your secured french door can be unlocked, in just a few seconds, with no visible signs of forced entry, using the above method. We see a lot of french doors installed near our Scottsdale lock shops and Gilbert lock shops that have newer and higher end homes.
Our Tempe Locksmith service also sees a lot of them because they are a collage town and have lots of condos that have them. All it takes to prevent this bypass, is a single screw. Keeping that in mind, we recommend screwing screws into each flush bolt so that they cannot be slid open until the screws are removed. Then screw a small screw into the bottom of the flush bolt so that the bolt can not be opened until the screw is removed.
If at some point, you need this door, simply remove the screws, and then reinstall them when you no longer need to use that side of the door. This technique, combined with the How to Reinforce an Entry Door in 6 Easy Steps , will make your double doors as secure as any door or window in the house. But what if you want more security?
Glass security window film has come a long way. A DIY installation of glass security film is now easily performed by most home owners and the security film will greatly enhance the security of a french door by preventing the glass from being easily broken in order to unlock the door. Security window film is a film that is attached to the glass. This film is several millimeters thick but clear so that the beauty of the door is not diminished. When applied to the glass, it acts to hold the glass together so that when the glass is hit, it will not break out.
The glass does actually break, but the film holds it together in place. For best installation of the security window film, remove the panel, install the film, and replace the panel into the window. When this is not possible, we use a thin bead of clear silicon around the edge of the window. Security film is available for order at Home Depot. When I have customers with large valuables in the home, and french doors, we have often increase the security of the french door to the highest level possible.
To do this, we:. The Mul-t-lock has a feature here that is ideal for double doors. In a Mul-t-lock lock, there is a ball bearing in the bolt that will secure and lock into the strike of the other door. This makes the two doors very difficult to pull apart! If you are investing in a Mul-t-Lock check out the prices on Amazon for a double french door, you do not want to get one with a thumb turn on the inside of the home. Buy a double cylinder deadbolt that takes a key on both sides.
This way, if the glass is broken out, the deadbolt cannot be opened using the thumb turn. Even if you are not spending the additional money on a Mul-t-lock, high security lock for your french door, you should upgrade the lock to a commercial grade double cylinder deadbolt for improved security.
Our favorite is the Schlage series. If you order on on Amazon , just take it into your local locksmith so they can key it to your existing house key before you install it.
You will need existing Schlage, Emtek, or Dexter door hardware to key this lock to your exiting house key. We install these at the top and bottom of both double doors. When combined with window security film and an interlocking Mul-t-lock deadbolt, your double door is virtually impenetrable.
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