Quck answer
To lock double doors, follow these steps:
1. Check if your double doors have a deadbolt. If not, consider installing one for added security.
2. Close both doors and ensure they are properly aligned. Adjust the hinges if necessary.
3. Engage the top and bottom bolts or latches on each door. These are typically located on the inside of the doors.
4. Install a slide bolt or chain lock on the inactive door. This will prevent it from being opened from the outside.
5. Use a door reinforcement kit to strengthen the doors and prevent forced entry.
6. Consider adding a security alarm system or surveillance cameras for enhanced protection.
Remember to regularly check and maintain your double doors’ locks to ensure they are functioning properly and provide the maximum level of security.
A set of double doors, also known as French doors if they have glass, consists of two door leaves installed in one frame. One of the leaves can be opened and closed using a knob or lever, while the other remains locked most of the time. Although traditional locksets can be used to secure these doors, flush bolts must be added to keep the inactive leaf in place.
Step 1: Determine the Active Leaf
Identify which leaf is active and which is inactive. Check blueprints if you have them, or consider which leaf is more convenient to open. Also, take into account the direction of traffic flow and the location of nearby furniture when choosing the active leaf.
Step 2: Choose a Lock
Select a lockset. Any mortise or cylindrical lock can be used on a double door as on a single door. Ensure that the lock fits the existing holes in the door, if applicable. The lock should also be suitable for the thickness of the door, which is typically between 1 3/8 inches and 1 3/4 inches.
Step 3: Drill the First Hole
Remove the lock from its package and locate the paper template. This template will be taped to the active leaf and indicate where to install the lock. Cut or drill holes in the active leaf as directed on the template, but avoid making any holes in the inactive leaf.
Step 4: Install the Lockset
Follow the lock template instructions to install the lockset in the active leaf. Add cylinders or trim as needed.
Step 5: Cut the Strike Hole
Use the strike template provided with the lock to prepare the inactive leaf. Wrap the template around the edge of the inactive leaf and drill holes as indicated. If the door is blank, use a hammer and chisel to carve out a pocket for the latch bolt. Then, screw the lock strike plate into place using the screws provided.
Step 6: Add Flush Bolts
Purchase top and bottom flush bolts for your door. Surface-mounted flush bolts will be the simplest option for novice installers. Use the bolt template to screw the bolts to the face of the inactive leaf.
Step 7: Mark the Bolt Locations
Apply lipstick to the end of each flush bolt and extend the bolt until it touches the floor (at the bottom) and the door frame (at the top). This mark will indicate where to cut the strike for each bolt.
Step 8: Install the Top Strike
Use a hole saw or hammer and chisel to cut the strike in the door frame as required. Cover the hole with the strike plate and screw it in place using the screws provided.
Step 9: Install the Bottom Strike
Install the bottom strike as you did the top strike. If the bolts are not long enough to reach the bottom strike, use wooden shims to raise the strike plate slightly. Test the bolts to ensure that they are secure.
Step 10: Keep Flush Bolts Locked
It’s important to always keep the flush bolts locked. Only unlock them if you need to temporarily widen the door opening, such as when moving large equipment through the doors. The lockset will keep the active leaf secure, while the flush bolts will keep the inactive leaf secure.
FAQ
1. How do you lock double doors securely?
To lock double doors securely, you can use different methods depending on the type of double doors you have. One common method is to install a deadbolt lock on both doors. This ensures that both doors are securely locked when you turn the key. Another option is to use a slide bolt or a flush bolt on the inactive door. This bolts the door into the frame, preventing it from being opened. You can also reinforce the doors by installing security bars or a door brace. These additional measures provide extra security and make it more difficult for intruders to enter through the double doors.
2. What types of locks are suitable for double doors?
There are several types of locks that are suitable for double doors. One common option is the double cylinder deadbolt lock. This type of lock requires a key to unlock from both sides, providing enhanced security. Another option is the slide bolt lock, which is installed on the inactive door and can be easily slid into place to secure the door. Flush bolts are also commonly used on double doors. These bolts are installed at the top and bottom of the inactive door, securing it into the frame. It is important to choose locks that are specifically designed for double doors to ensure proper fit and functionality.
3. Can I use a regular lock on double doors?
While it is possible to use a regular lock on double doors, it may not provide sufficient security. Regular locks are typically designed for single doors and may not adequately secure both doors when locked. It is recommended to use locks that are specifically designed for double doors, such as double cylinder deadbolts or flush bolts. These locks are specifically engineered to provide better security for double doors and ensure both doors are securely locked when engaged.
4. Are there any additional security measures for double doors?
Yes, there are additional security measures you can take to enhance the security of double doors. One option is to install security bars on the inside of the doors. These bars can be easily adjusted to fit the width of the doors and provide an extra layer of protection against forced entry. Another option is to install a door brace. This device reinforces the door and makes it more difficult to kick in. Additionally, you can consider installing a security system with sensors on the doors, which will alert you if someone tries to force their way in.
5. What should I do if my double doors are not closing properly?
If your double doors are not closing properly, there are a few steps you can take to fix the issue. First, check if there are any obstructions in the door frame or hinges that may be preventing the doors from closing fully. Remove any debris or objects that may be blocking the doors. If the doors still don’t close properly, you may need to adjust the strike plates or hinges. Tighten any loose screws and ensure that the strike plates align properly with the door locks. If these steps don’t solve the problem, it may be necessary to consult a professional door installer or locksmith to assess and repair the issue.