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How to Lock a Double Door: Securing French and Double Entry Doors

Double entry doors are a popular feature in many homes and businesses across the U.S. They’re attractive, wide, and easy to use. Still, when it comes to safety, they often raise one common concern: how to lock a double door so it’s truly secure. Whether you’re dealing with French doors on your patio or double doors at your front entrance, getting the locking system right is key. This guide from Sure Lock & Key walks you through long-term hardware, short-term fixes, and smart solutions to match any double-door setup.

How to Lock a Door from the Inside: Simple Methods for Added Security

Sometimes, you just need a little more peace of mind when you’re on the other side of a closed door — especially in shared spaces, rentals, or unfamiliar places. Whether your door doesn’t have a working lock or you simply want a quick DIY fix, knowing how to lock a door from the inside using everyday items can help you feel more secure. In this guide, Sure Lock & Key walks you through practical, easy methods to reinforce your space without needing special tools or complicated hardware.

How to Fix a Car Door Lock: Troubleshooting Manual & Power Locks

Despite advancements in car technology, faulty door locks remain a common frustration. Whether your vehicle uses a traditional manual lock or a modern power system, knowing how to fix car door lock issues gives you back some control. Sure Lock & Key shares expert insights into common car lock issues. Let’s learn how to fix them yourself or recognize when it’s time to call a professional.

How Does a Door Lock Work: Inside the Mechanism

Door locks are such a routine part of life that most people never stop to think about how they actually function. Whether you're a homeowner, landlord, or business manager, having a basic understanding of how a lock operates can come in handy. It helps you spot problems earlier, know when to call a pro, or even explain things clearly when asking for help. Sure Lock & Key created this guide to break down the essentials in a simple, easy-to-grasp way.

How to Lock Patio Door: Best Ways to Secure Sliding and Hinged Doors

Patio doors offer wonderful natural light and easy access to outdoor spaces. Yet, they can be a weak spot if not properly locked. Whether you have a sliding glass door that glides open or a classic hinged patio door, understanding how to lock a patio door effectively is a must for homeowners, business managers, and property owners alike. In this guide, Sure Lock & Key shares clear, practical tips to help secure your entry points — so you can feel more confident about your property’s safety.

How to Lock a Door Without a Key: Simple Solutions for Every Situation

Not every door needs a traditional key — and not every door has one. Whether you’ve lost the key, the hardware was never installed, or you’re looking for a faster way to secure a room, knowing how to lock a door without a key is a handy skill for any homeowner. This guide walks you through practical, no-fuss solutions for securing doors that don’t use traditional keys, including situations where you’re working with a door handle without a lock.

How to Change a Door Lock Cylinder: Easy Lock Replacement

Old locks don’t always need full replacement. In many cases, changing just the cylinder is enough to fix a sticking key, switch to a new one, or improve the lock’s function. It’s a quick project that can help restore proper function or update access without much hassle. Below, you’ll find a short and clear guide on how to change the cylinder on a door lock — step by step.

How to Remove a Door Lock Cylinder: A Quick Step-by-Step Guide

Whether you’re a homeowner replacing old hardware or a landlord upgrading security, learning how to remove a lock cylinder from a door can be a handy skill. While the process varies based on the lock type, it’s a pretty simple task that doesn't require advanced tools or deep technical knowledge. Below, we break it down by lock style to make it easier. If anything feels too tricky, there’s always the option to bring in a professional.

How to Install a Keyless Door Lock: Easy Installation Tips for a Secure Home

For homeowners, landlords, business managers, or anyone looking to upgrade security without carrying a key, keyless entry door locks are a smart, easy solution. They’re also a practical way to avoid lost keys, accidental lockouts, and the hassle of making duplicates. In this guide, Sure Lock & Key breaks down the basics and shows you how to install a keyless entry door lock — whether you plan to do it yourself or want a pro to handle it.