Cedar Mill Property Repair repairs soft, rotten door jambs, sills and thresholds on west-side homes, Bethany and Cedar Mill included, plus Beaverton. Slava cuts out the spongy bottom of the frame, glues in fresh lumber or PVC, and finds the water that started it. Market data from November 2026 puts a typical Portland-area frame fix at $400-$1,600, labour only . A snapshot sent by text to is enough for a first look.
A jamb that cracked when someone forced the door, but is still hard wood, belongs on our door repair page instead. Everything below is about wood that water has turned soft.
Can you fix a rotten door frame and keep the same door?
Usually. When the slab is in good shape and the decay is limited to roughly the lowest 12 inches of a side jamb, brickmold or sill, the frame gets mended where it stands and the existing door is rehung.
| Fix | Good for | How Slava does it |
|---|---|---|
| Harden and fill with epoxy | A surface patch where firm wood starts just under the soft layer | Scrape back to solid fibre, saturate with consolidant, pack two-part epoxy, sand to shape, prime |
| Splice in a new section (a "Dutchman") | Decay that eats clean through a jamb foot or the brickmold | Square cut above the damage, new block of lumber or PVC, glued and screwed, joints caulked, primed |
| New jamb leg, new sill, or a new prehung unit | Decay running up past the hinges, or a door whose bottom rail is falling apart | Swap the failed part, or hang a complete new door |
A slab past saving means entry door replacement; the front door cost breakdown shows what new units go for.
What makes a door jamb rot at the bottom?
Moisture gets in near the ground and stays. Each side jamb ends in raw end grain resting on the sill or a concrete stoop, and that grain soaks water upward. Common helpers: cracked caulk along the brickmold, a threshold installed with no pan or flashing beneath it, rain splashing up from an open step, and a tired sweep that lets water run onto the sill.
West of Portland the wet months stretch from fall into spring, so an exposed entry can sit damp for months. Unless the source gets fixed, fresh wood fails just like the old wood did.
When the decay has moved into the clapboards or the trim beside the opening, that part is handled as siding and wood rot work.
How can I check how far the rot has spread?
Push a screwdriver or an awl into each side jamb, then into the brickmold, sill and threshold. Good wood resists; rotten wood lets the tip sink. Inside, step on the floor right behind the door and feel for any give. Other warning signs: paint bubbling or flaking where the jamb meets the sill, wood that looks dark and stringy, a threshold that bends when you stand on it, a latch that no longer catches.
Decay quits spreading when the bad wood is cut away and the rest is kept dry. Consolidant stiffens loose fibre, yet it can't restore strength to rotten wood, so the soft material gets removed, not painted over.
Now and then the problem has reached the subfloor, the rim joist or the studs. We stop and explain that before opening up more. Plenty of 1960s-80s houses out this way stand over crawl spaces, which often lets us see the joists under the doorway from below.
How much is rotted door frame repair near Portland?
Every figure here is a regional market range from November 2026. Slava still has to approve our own numbers before they replace these.
| Work | Low-high | Middle | Priced as |
|---|---|---|---|
| Rot repair: jamb leg, sill or threshold, by epoxy fill or splice | $400-$1,600 | $800 | each job, labour only |
| Compare: cracked or forced jamb, no rot | $250-$900 | $450 | each job, labour only |
| Compare: new sweep and threshold | $150-$450 | $250 | each job, labour only |
| Compare: full exterior door swap with pan and flashing | $724-$5,098 | $2,890 | each door, materials included |
The price climbs with a second jamb leg, damaged brickmold, a soft sill, taking the door off its hinges, copying an old trim profile, primer and paint, and any decay found past the frame. The repair figures are labour only.
Once a repair turns into a new door and the price tops $2,000, a signed written contract becomes mandatory in Oregon. See what an Oregon home-repair contract must say for the required items.
Will the sill under the threshold need replacing?
It's often the first thing to fail. Metal and composite thresholds usually sit on a wood sill, and any water that slips past ends up resting on it. Older doors may have a plain wood sill with nothing covering it.
Slava replaces the decayed piece or the entire sill, resets or swaps the threshold, and seals beneath it. If the wood is still firm and just the sweep or threshold has worn out, it's a smaller weatherstripping job with its own price.
Does lead paint matter on an older door frame?
It can. Oregon presumes any home built prior to 1978 carries lead in its paint until lab results say no. A frame patch smaller than that is minor repair by the Oregon Health Authority's definition.
Around here, that's a big share of entry doors. Cedar Hills went up in the post-war boom, Cedar Mill grew mostly in the late 60s and 70s, and Beaverton's older ranch and split-level streets date from those decades too. Our lead-paint limit is listed with the jobs we pass on.
Is this a DIY job?
One small soft patch on the brickmold is something a handy owner can manage over a weekend using a two-part epoxy kit. Get help if both side jambs are soft, or the sill is, the latch has stopped catching, the floor behind the door feels spongy, or the leak's source is a mystery.