S23 E5: Medicine Cabinet, Chimney Crown is the kind of home-improvement episode that quietly exposes a universal truth: houses are very good at hiding drama behind mirrors and above rooflines. One minute, a bathroom medicine cabinet looks like a simple upgrade. The next, someone is wondering whether a wall contains plumbing, wiring, framing surprises, or the architectural equivalent of a raccoon wearing a hard hat. Meanwhile, a chimney crown may seem like a boring slab of concrete until it starts letting water sneak into places where water absolutely did not RSVP.
This episode brings together two practical home projects: installing a recessed medicine cabinet and repairing a chimney crown. Both jobs look straightforward from a distance, but each requires patience, inspection, and respect for what is hidden behind the surface. That is why the episode works so well for homeowners. It is not just about making a bathroom cleaner or a chimney drier. It is about learning how small upgrades can protect a home, improve daily routines, and prevent expensive damage later.
In classic Ask This Old House fashion, the episode blends craftsmanship with common sense. Nathan Gilbert tackles the bathroom cabinet project, showing how careful layout and wall investigation can turn an outdated surface-mounted unit into a sleek recessed cabinet. Mark McCullough handles the masonry side, replacing a failing chimney crown that has been letting water enter the system. Together, the two projects deliver a useful reminder: the best home repairs are not rushed, guessed, or powered entirely by optimism and caffeine.
What Happens in S23 E5: Medicine Cabinet, Chimney Crown?
The episode is divided into two major house calls. First, a homeowner wants to upgrade a bulky bathroom medicine cabinet into a cleaner recessed model. The goal is simple: better appearance, better function, and less “hello, I am a box hanging on your wall” energy. But before cutting into the bathroom wall, Nathan checks whether the wall is safe to modify. Bathrooms are notorious for hiding vents, electrical wiring, plumbing lines, and framing questions behind drywall.
The second project focuses on a chimney crown. Mark McCullough visits a homeowner dealing with water damage connected to an indoor charcoal grill chimney. The old crown is no longer doing its job, so the repair involves removing the damaged material, extending the flue, reinforcing the new crown, and shaping fresh concrete so water drains away instead of pooling. It is masonry with a mission: keep water out, protect the chimney, and help the fireplace or grill system function safely.
Why a Recessed Medicine Cabinet Is More Than a Bathroom Upgrade
A medicine cabinet may not sound like the star of a remodeling project, but it can change how a bathroom looks and works. A surface-mounted cabinet is easier to install because it attaches directly to the wall. A recessed medicine cabinet, however, sits inside the wall cavity, creating a cleaner built-in appearance. It can make a small bathroom feel less crowded and more intentional.
That said, recessed cabinets are not magical wall portals. They require a proper opening, secure framing, and enough depth inside the wall. A typical bathroom wall may contain studs spaced 16 inches on center, but the cabinet width may not land perfectly between them. When that happens, the installer may need to cut and reframe part of the wall. This is where the project becomes carpentry, not just “hang the shiny thing and celebrate.”
Step 1: Plan the Cabinet Location
The first smart move is layout. The cabinet should be centered over the sink or vanity when possible, aligned with lighting, and placed at a comfortable height. Homeowners should also think about door swing. A mirrored cabinet that opens directly into a light fixture, towel bar, or nearby wall is not a cabinet; it is a tiny daily argument.
Before cutting, the installer marks the cabinet dimensions on the wall. This outline helps confirm whether the cabinet will look balanced and whether the opening conflicts with nearby trim, tile, outlets, or fixtures. Good layout prevents the most annoying remodeling sentence in the English language: “Well, now that we’ve cut the hole…”
Step 2: Inspect Before Cutting Big
One of the best lessons from this episode is the value of a small inspection hole. Instead of cutting the full cabinet opening immediately, Nathan starts carefully. That allows him to look inside the wall and check for wiring, pipes, vent lines, or other surprises. In bathrooms, this is especially important because plumbing vents and electrical runs may be close to the vanity area.
This step separates careful remodeling from drywall roulette. If wires or pipes are present, a homeowner may need a licensed electrician or plumber before continuing. If the wall is load-bearing, structural changes require a more serious plan. When the wall is clear and non-load-bearing, the project can move forward with far less drama.
Step 3: Reframe the Opening
If studs are in the way, the opening must be reframed properly. This usually means cutting the obstructing stud section and installing horizontal blocking or headers to support the drywall and provide solid fastening points for the cabinet. The goal is to create a sturdy framed box inside the wall, not a floppy drywall cave that politely hopes the cabinet stays put.
The cabinet should slide into the opening without forcing. If the fit is too tight, the cabinet may twist or bind. If it is too loose, the screws may not hold properly. A square, level opening makes the final installation look professional and prevents the mirror door from swinging like it has unresolved personal issues.
Step 4: Install and Finish the Cabinet
Once the opening is ready, the cabinet can be set into place, leveled, shimmed if needed, and fastened according to the manufacturer’s instructions. The door should open smoothly, shelves should sit securely, and the cabinet should feel solid. If the cabinet includes lighting, outlets, defogging features, or USB ports, bathroom electrical safety becomes essential. Any electrical work in wet areas should follow code requirements, including proper GFCI protection where required.
The final result is both visual and practical. A recessed medicine cabinet gives the bathroom more storage without adding bulk. It can hide toothpaste, razors, prescriptions, skincare products, and that one mystery bottle everyone owns but nobody remembers buying.
Chimney Crown Repair: The Small Top Piece That Does Big Work
The chimney crown is the masonry or concrete top surface that covers the chimney structure around the flue. Its job is to shed water away from the flue opening and masonry walls. When properly built, it slopes away from the flue, extends beyond the chimney edges, and helps protect brick and mortar from rain, snow, freeze-thaw cycles, and long-term moisture damage.
When a chimney crown fails, water can enter the chimney system. That moisture may damage mortar joints, stain interior surfaces, weaken masonry, contribute to odors, and create expensive repair problems. In cold climates, absorbed water can freeze, expand, and make cracks worse. Water is patient, persistent, and frankly rude.
Signs a Chimney Crown Needs Attention
Homeowners may notice cracks in the crown, missing pieces, loose mortar, rust stains, water marks near the fireplace or chimney, damp smells, or debris in the firebox. Sometimes the problem is visible from the ground, but often it requires a safe roof-level inspection by a qualified professional. Chimneys are not ideal places for casual acrobatics. If the roof is steep, wet, icy, or high, call a pro.
A chimney crown is different from a chimney cap. The cap is usually metal and covers the flue opening to help keep out rain, animals, and debris. The crown is the masonry surface beneath or around the cap area. Both matter. A missing cap can let water fall directly into the flue, while a cracked crown can let water enter the masonry itself.
How the Chimney Crown Repair Works
In the episode, the failing crown is removed so the repair can start from a sound base. The old material must be demolished carefully to avoid damaging the chimney, roof, or surrounding structure. After debris is cleared away, the masonry surface is prepared so the new material bonds properly.
The flue may need to be extended to the correct height above the new crown. This detail matters because the crown should not bury or trap the flue tile. A proper joint around the flue allows for expansion and movement. Chimney systems deal with heat, cold, moisture, and time, which means rigid shortcuts tend to become future cracks.
Next comes reinforcement. A durable crown often includes reinforcing material such as rebar, wire mesh, or lath, depending on the design. Concrete is then placed and shaped with a slope that directs water away from the flue and toward the outer edge. A well-made crown should not be flat. Flat masonry outdoors is basically a birdbath with invoices attached.
The finished crown should project beyond the chimney walls and include a drip edge or overhang so water falls away instead of running down the brick. That design helps protect mortar joints and reduces the chance of water soaking into the vertical masonry face.
Why Water Is the Main Villain in This Episode
Both projects in S23 E5: Medicine Cabinet, Chimney Crown involve hidden conditions. In the bathroom, the concern is what might be inside the wall. At the chimney, the concern is what water has been doing over time. Water damage is one of the most common and costly home problems because it rarely announces itself politely. It sneaks, stains, swells, rusts, rots, freezes, and waits for the worst possible moment.
That is why prevention matters. A recessed medicine cabinet should not interfere with plumbing or electrical systems. A chimney crown should not allow water into masonry. In both cases, the repair is successful because the experts investigate first and build second. This is the opposite of the “measure once, cut twice, blame the tape measure” method.
Practical Lessons Homeowners Can Take From the Episode
Do Not Assume Empty Space Is Actually Empty
Walls often contain more than air. Before recessing a cabinet, cutting a niche, or opening drywall, check carefully. Small inspection holes, stud finders, photos from accessible spaces, and knowledge of nearby fixtures can all help. If there is any sign of wiring or plumbing, stop and bring in the right trade professional.
Respect Moisture Management
Chimneys live outdoors in brutal conditions. Sun, rain, snow, wind, and temperature swings attack the crown and mortar year after year. A quality chimney crown is not just a cosmetic cap. It is part of the home’s water-management system. When it fails, the damage can travel downward and inward.
Use the Right Materials
Bathroom cabinets need corrosion-resistant finishes, secure fasteners, and safe electrical features if powered. Chimney crowns need masonry materials designed for exterior exposure, proper reinforcement, slope, and detailing around the flue. The wrong material may look fine for a season and then begin a slow career as rubble.
Know When DIY Ends
Many homeowners can remove an old medicine cabinet, paint a wall, or install a simple surface-mounted unit. Recessed cabinets become more complex when studs need modification or electrical components are involved. Chimney work is even more demanding because it involves roof safety, masonry skill, and sometimes fireplace safety codes. Confidence is good. Gravity is undefeated.
Specific Examples Inspired by the Episode
Imagine a homeowner replacing a 1990s mirrored cabinet in a small guest bathroom. A recessed cabinet would free up several inches of visual space and make the vanity area look cleaner. The homeowner marks the wall, cuts a small inspection hole, and finds a plumbing vent exactly where the cabinet was supposed to go. That discovery may feel annoying, but it prevents a much worse problem. The design can be adjusted before a full wall opening is cut.
Now imagine a chimney with small crown cracks. The homeowner ignores them because the fireplace still works. A few winters later, water has seeped into the crown, frozen, expanded, and opened larger cracks. Mortar joints begin to deteriorate, stains appear inside, and the repair becomes more expensive. A timely crown repair could have prevented the masonry version of “I told you so.”
Experience Notes: Living With the Lessons From S23 E5
One of the most relatable parts of S23 E5: Medicine Cabinet, Chimney Crown is that neither project begins with a mansion-level renovation dream. These are normal homeowner problems. The bathroom cabinet is outdated and bulky. The chimney crown is failing and causing water trouble. Nobody is installing a gold-plated bathtub or a fireplace that responds to voice commands. The episode feels useful because it focuses on the kind of repairs that real people actually face.
From experience, medicine cabinet projects always look easiest before the first screw comes out. The old cabinet may be hiding uneven paint lines, damaged drywall, strange anchors, or a previous installer’s creative interpretation of “level.” Once the cabinet is removed, the wall tells the truth. That is why patience matters. A good installer does not rush to cut the finished opening. They check the wall cavity, confirm measurements, and think through the sequence. That calm approach saves time, even though it may feel slower at first.
The best bathroom upgrades also consider daily habits. A recessed medicine cabinet should not just look nice in photos. It should hold the items people actually use. Adjustable shelves are a major advantage because not every bottle is the same height. Interior mirrors can help with grooming. Soft-close doors reduce noise. Good lighting around the vanity matters just as much as the cabinet itself. The goal is a bathroom that works on a Monday morning when everyone is late, not just a bathroom that looks peaceful in a staged real estate photo.
Chimney crown experience is different because most homeowners do not look at their chimney top often. People notice a cracked tile floor immediately, but a cracked chimney crown can sit unnoticed for years. That is why periodic inspection is so important. A chimney may look solid from the driveway while the crown is cracked, the cap is missing, or the flashing is loose. By the time water stains appear indoors, the exterior problem may already be advanced.
Another lesson is that masonry repairs reward craftsmanship. A chimney crown is not just poured concrete. It needs proper preparation, reinforcement, slope, thickness, edge detail, and curing. A rushed patch may temporarily hide cracks, but it will not perform like a properly built crown. The episode makes that clear without turning the repair into a lecture. Mark’s work shows that the shape of the crown matters as much as the material. Water should be guided away from the chimney, not invited to linger like an awkward guest after dinner.
For homeowners, the biggest takeaway is simple: small projects deserve serious attention. A medicine cabinet affects storage, comfort, electrical safety, and wall framing. A chimney crown affects water management, masonry durability, and fireplace usability. These are not glamorous details, but homes are held together by details. Ignore enough of them, and the house will eventually send a bill with bold lettering.
That is what makes this episode valuable. It encourages homeowners to look closer, ask better questions, and appreciate the hidden systems that keep a house safe and functional. Whether you are upgrading a bathroom or protecting a chimney, the smartest tool is not always the saw, drill, trowel, or hammer. Sometimes it is the pause before using them.
Conclusion
S23 E5: Medicine Cabinet, Chimney Crown delivers two practical home-improvement stories with one shared message: inspect first, repair correctly, and never underestimate hidden problems. A recessed medicine cabinet can make a bathroom feel cleaner, smarter, and more spacious, but only if the wall is evaluated and reframed properly. A chimney crown may sit far above eye level, but it plays a major role in keeping water out of masonry and protecting the chimney system.
The episode is useful because it treats everyday projects with professional care. It shows that good remodeling is not about rushing to the pretty finish. It is about understanding what is behind the wall, what is happening above the roof, and how each repair affects the long-term health of the home. In other words, the house always has a backstory. The smart homeowner learns to read it before grabbing the biggest tool in the garage.
