Lock trouble after a remodel

A remodel is a loud, dusty project, and the locks in the house sit right in the path of it. Doors are taken off hinges and set on sawhorses. Hardware is unscrewed to make painting easier, then put back by someone in a hurry to finish the day. Floors rise or fall by half an inch. A dozen people may be given a key so that they can get in before the owner is awake. By the time the last tile is grouted, the lock on the front door has been through more than it saw in years.

The problems that follow tend to show up a few weeks after the work ends. A door that dragged on the new floor starts to wear its latch. A deadbolt jams because paint dripped into the throw. A key that was copied for a crew member is still in somebody's truck. The owner calls the contractor, the contractor says the lock is old, and nobody quite owns the problem.

We work with homeowners in Redding, Shasta Lake, Palo Cedro and the surrounding mountain towns who find themselves in this spot. This field note lays out the common failures in plain terms, explains which are hardware issues and which are door issues, and describes the key control questions that a remodel raises. It is practical rather than technical, and you can go through it with a flashlight and a cup of coffee.

Keep one idea in mind as you read. A lock is only as dependable as the door and frame it sits in, and a remodel disturbs both. So the useful question after any project is not whether the lock still works today, but whether the door, the hardware and the list of people holding keys are all back in the condition you would want them to be in a year from now. If the answer to any of those is uncertain, it is worth an hour of attention while the project is still fresh in everyone memory and the crews are still easy to reach.

Flooring is the single most common trigger. Replace worn carpet with thick plank or tile over a layer of backer board and the surface can rise by a surprising amount. Doors that swung freely over the old carpet now scrape the new floor or the new threshold. Some get trimmed at the bottom to clear it, which shortens the door and changes where the weight sits. Others are left to rub.

A door that rubs at the bottom twists slightly against its hinges whenever it is opened. That twist travels up the door to the latch edge, so the latch no longer meets the strike at the original height. You might notice that the door only locks if you lift on the handle. The bolt has not failed; it is arriving at its hole a fraction too low. Our guide to doors that do not latch describes the checks in more detail.

Raising or lowering a strike plate by a small amount often restores the match, and the plate can be moved without altering the door. If the door was trimmed, the trimmed edge also needs sealing against moisture. Ask whoever did the floor to leave the bottom edge sealed. A locksmith can handle the strike and bolt, and a carpenter can handle the cut edge. Many owners find that having both look at the door once is better than guessing in sequence.

• Thicker flooring can lift the surface enough to scrape the door.
• A door that rubs at the bottom twists and shifts the latch height.
• Raising or lowering the strike plate often restores the match.
• Trimmed door edges should be sealed so they do not take on water.

Painters sometimes remove knobs and plates, and sometimes paint around them or right over them. Either way, a latch face coated in paint will not slide smoothly. The tongue sticks in its housing, and what felt like a bad lock is a latch glued with latex. Paint on the strike plate has the opposite effect, thickening the plate so the tongue catches at a different spot than before.

Drywall and plaster dust is even more stubborn. It is a fine, abrasive powder, and it drifts into every opening. A keyway that was clean in March can be half full of white dust by the end of a sanding week. Pins and springs inside the cylinder pick it up, and it mixes with any lubricant to make a paste that grinds as the key turns. The cure is not more oil. It is a careful cleaning and, in some cases, cylinder service.

Silicone and caulk can also find their way into hardware when trim is sealed. If a bead of caulk bridges the gap between a door edge and a frame, it can catch the latch or glue the door shut as it cures. Check for these obvious culprits first: dried paint on the latch face, caulk lines near the strike, and dust in the keyway. Cleaning those up will solve a surprising number of post remodel lock complaints without any parts at all.

Hardware that was taken off and put back is a quiet source of trouble. Knobs and levers have two long through screws and several short ones, and these are not interchangeable. A short screw in a long hole holds nothing, and a long screw in a short hole can press against the latch body and stop the spindle from turning. Plates may go back on upside down, and deadbolt faceplates can be reinstalled slightly crooked so the bolt scrapes its edge.

If a lever now sags or the handle will not return, remove the cover plate and look. The spindle should sit centered in the latch body with a little room to move. The latch tongue should slide in and out freely when you turn the handle with the door open. A bolt that feels stiff with the door open points to something wrong with the hardware assembly. A bolt that works well open and badly closed points back to the strike and the door.

One sign to watch for is a deadbolt that seems to work but leaves a thin line of bright metal on the strike where the bolt is rubbing. That means the throw is landing off center. You can read about the strike side in strike plates and door frames. For a bolt that has been forced and is now bent or loose in its housing, our team can replace it through lock installation.

Remodels often bring new door hardware in a different finish than the old, and the temptation is to replace a few pieces now and a few later. Over time the house ends up with three finishes and four different key types. Each door needs its own key, and a ring of six keys that all look similar is a problem on a dark porch at night.

The practical answer is to decide on a key plan before you buy hardware. Many modern sets can be keyed to a single key, so one key opens every exterior door. That is a good use of rekeying, which changes the pin pattern inside a lock so that a different key works. We explain the process on our rekeying page, and it often costs less effort than replacing every cylinder.

If you are buying new locks for a remodel, mention to the person selling them that you would like them keyed alike or to a single key. If you are keeping some old locks, ask to have them rekeyed to match. That way you avoid a pile of keys that fit only one door, and your family can carry a single key to the front, back and garage entry doors. The mix of finishes is cosmetic and can wait. The mix of keys is a security matter.

This is the part of a remodel that owners tend to overlook. For a project of any length, you probably handed out keys, or gave a lockbox code, or left a spare under a mat so a plumber could get in. A framer, an electrician, a tile setter and a cleaner may each have used a key, and some of those people brought a helper. After the final inspection, you may not be able to say how many keys are still out there.

None of this suggests that tradespeople are dishonest. Most are careful and professional. It is simply a matter of control. A key that you cannot account for is a door you cannot fully trust, and the answer is not suspicion but a clean slate. Once the work is done, a rekey changes every cylinder so that the old keys no longer work and only the new ones do. That is the usual step after any project where several outsiders held keys.

If you used a lockbox, change its code once the project ends and take the box down. If you used a keypad lock with temporary codes, delete each code you issued. Picture a homeowner near Palo Cedro who finishes a kitchen and bath remodel, then realizes the original builder, three subcontractors and a cleaning crew all had a copy. A single rekey visit gives her one key in her own hand and nobody else's. Our residential locksmith service covers this work.

Some remodels swap an entire door, and new doors arrive with their own quirks. A pre hung door comes in a fresh frame with strike openings already cut, but the openings may not line up with the existing wall and trim. A slab door arrives without bored holes, and the person who cuts them must pick a spacing for the lock that suits the hardware. Hardware also varies in how far the latch sits from the door edge, and that spacing needs to match the set you intend to install.

Bad spacing is common. A hole drilled a fraction too small makes the lock bind. A hole too large lets a cylinder rotate loose. A mortise cut too deep means the latch sits recessed behind the face of the door, and the tongue cannot reach the strike. These are the kinds of mistakes that appear on day one, and a locksmith is often called to fix them after the carpenter has left.

If you are ordering a door, tell the supplier which lock set you plan to use, or buy the lock first and take its template to the person drilling. Our lock installation crew can fit hardware to a new door or correct holes that were cut a little off. When the door itself is the problem, we say so, and we do not hide a bad cut behind a thick faceplate.

A remodel is a tempting time to add an electronic lock, and the timing is sensible because the walls may already be open. A few cautions apply. Electronic locks add weight, and a door that is already out of true will wear a motorized bolt sooner than a plain one. A smart lock is not a repair for a door that does not close properly.

Battery access and network range both matter. A keypad on an exterior wall that gets rain, or a smart lock on a door far from the router, will disappoint. Ask where the batteries sit, how you will know they are running low, and what the backup is if they die. Our guides on smart locks, promises and practical limits and battery failure in electronic locks cover those details.

Keep a mechanical key for every electronic lock, and keep it somewhere that is not the porch. Many homeowners find that after a remodel they have a handsome new lock and no spare way in. Plan the backup before the electrician and installer have finished and gone home.

Before you make the final payment on a remodel, walk through the house and test every door. Open it all the way, close it gently, lock it, unlock it, and lean on it a little to see that it holds. Do it with each key you have, and with a spare. Look at every latch and bolt for paint, dust or caulk. Check that every strike plate has its screws and that nothing wobbles.

Make a list of everyone who held a key. Collect what can be collected, and plan a rekey for the rest. Delete temporary codes, remove lockboxes, and ask for the contractor's confirmation that all copies were returned. These steps take an hour and prevent months of low level worry about who can walk in.

If something is off, send us a request through the request form with a description of the door and the work that was done. Call (279) 972-2075 or use the request form on the contact page. A short note about what changed in the house helps our team arrive with the right parts. We cover the valley, from Redding to Shasta Lake, and up the mountain corridor to Weed.