Rotted Door Frame Repair in Rockville, MD & Silver Spring

Exterior door frames rot from the bottom. Water runs down the face of the door, crosses the threshold, and wicks up into the end grain of the jamb legs where they sit on the sill. The top of the frame can look perfect while the bottom twelve inches have turned to sponge. NextDayJose repairs rotted door frames and jambs across Rockville, Silver Spring, Potomac and Bethesda — locally-owned, licensed and insured, 13+ years in the DMV.

The good news is that in most cases the door stays. Jamb legs, brickmold and casing are separate pieces, so we can cut out the rotted section and splice in new material while the slab, the hinges and the lock all stay where they are. If the frame is beyond splicing, that becomes door replacement, and if the damage is in the threshold itself that is threshold replacement. Rot elsewhere on the house is wood rot repair.

Door Frame Rot We Repair

• Rotted door jamb legs, spliced or fully replaced
• Soft bottom-of-jamb repair at the threshold
• Rotten brickmold and exterior door casing
• Water-damaged framing behind the jamb
• Strike-side jamb rebuilt so the door latches again
• PVC and composite jamb and brickmold upgrades
• Re-shimming and re-hanging so the door swings true
• Sealing, flashing and priming to stop it recurring

The Screwdriver Test, and What It Means

Press a screwdriver into the bottom twelve inches of both jamb legs with firm thumb pressure. If it sinks in even slightly, there is rot. This is worth doing before you call anybody, because it also tells you which door you actually have. Rot on one leg only is usually a splice. Rot on both legs plus a soft threshold means water has been sitting there for years and the framing behind is probably wet too.

The second thing we check is whether the door still latches. A frame that has rotted has usually also moved, so the strike no longer lines up with the latch. Homeowners often arrive at this from the other direction — the door stopped closing properly, and the rot is the cause. Our post on why doors stop closing walks through the other six causes if you are not sure this is yours.

Splice, Replace the Jamb, or Replace the Frame

A splice is the most common repair: we cut the jamb leg square well above the damage, remove the rotted section, and let in a new piece of primed jamb stock or PVC, glued and fastened into the framing behind. Done properly the joint disappears under paint and the repair is as strong as the original. This is typically a single visit per door.

Replacing the whole jamb leg makes sense when the rot runs high, when the leg has cupped or twisted, or when the hinge screws no longer have sound wood to bite. Replacing the entire frame — both legs and the head — is the answer when the framing behind is wet or the unit has racked out of square. We will tell you which one you are looking at after we probe it, not before.

Why the Bottom of the Jamb Is Always First

Every exterior door has an unavoidable weak point: the place where a vertical piece of wood meets a horizontal surface that gets wet. End grain drinks water roughly ten times faster than face grain, and the bottom of a jamb leg is end grain sitting directly on the threshold. If the caulk joint there has failed, or the threshold has no drip detail, or the storm door is trapping water against the frame, that end grain is wet after every rain.

So the repair is not finished when the wood is replaced. We seal the end grain before the new piece goes in, re-detail the joint at the threshold, and check that weatherstripping and the sweep are not holding water against the frame. Storm doors are a frequent and counter-intuitive culprit — they can turn the space between the two doors into a warm, wet box in the summer.

Door Frame Repair Cost in Silver Spring & Rockville, MD

Frame repair is priced by how much of the jamb has to come out and whether the brickmold goes with it. All prices include labor:

*Prices are estimates for the Rockville, Silver Spring, Potomac, and greater DMV area. Final cost depends on materials and scope of work. Request a free estimate — we never charge for quotes.

Door Frames in Montgomery County Homes

The doors we repair around Rockville, Silver Spring, Wheaton and Kensington are mostly original openings in houses built between the 1950s and the 1980s, with paint-grade pine jambs set on a wood or aluminum threshold. Two local patterns drive almost all of the damage. Side and back doors under a small stoop with no roof over them take the full weather load, and those are the ones we replace most often. And on split-levels, the lower-entry door frequently sits at or near grade where splash-back off the concrete hits the bottom of the frame with every storm.

The third pattern is storm doors. They are common across the DMV and they are genuinely useful, but a tight storm door over a dark-painted entry door creates a hot, humid cavity in July that keeps the jamb damp. If we find rot behind a storm door we will point it out and talk about venting it, because otherwise the new jamb is on the same clock as the old one. The same water usually took the window sills nearby, and it is worth looking while we are there.

Door Frame Rot FAQs — Rockville, Potomac & Silver Spring

Can a rotted door frame be repaired without replacing the door?

Usually yes. The jamb legs, brickmold and casing are separate pieces from the door slab, so we can cut out the rotted section and splice in new material while the door, hinges and lock stay exactly where they are. Replacing the door only becomes necessary when the slab itself is damaged or the whole unit has racked out of square.

How do I check if my door frame is rotted?

Press a screwdriver into the bottom twelve inches of both jamb legs using firm thumb pressure. Sound wood resists; if the tip sinks in or the wood feels spongy, that is rot. Check the brickmold at the outside corners too. A door that has recently started sticking or failing to latch is often telling you the same thing before you can see it.

What does rotted door frame repair cost in Rockville?

A bottom-of-jamb splice on one leg typically runs $350 to $700. Both legs is usually $600 to $1,200, and a full jamb leg replacement $700 to $1,400. Replacing the complete frame including the head and any wet framing behind it runs $1,200 to $2,500. Quotes are always free.

Should the new jamb be wood or PVC?

For the bottom section of an exterior jamb, PVC is a strong choice — it will not rot, it takes paint, and it costs roughly $150 to $450 more. It is particularly worth it on a door with no roof over it or one at grade where splash-back is the problem. Hinge-side jambs still need sound material for the screws to bite, which we account for either way.

Why does my door frame keep rotting after it was repaired?

Because the water was never addressed. The bottom of a jamb leg is end grain sitting on a threshold, and end grain absorbs water roughly ten times faster than face grain. If the caulk joint at the threshold has failed, the threshold lacks a drip detail, or a storm door is trapping humidity against the frame, a new jamb will rot on the same schedule. We seal end grain, re-detail the joint, and tell you when a storm door needs venting.