The people who sold us the house left a binder with every paint code in it and not one word about the garage door. It was a fir overlay, stained dark, and in June it looked like the nicest thing on the property. The following March it scraped its way up about eight inches, shuddered, and quit. I spent that spring learning what a swollen bottom rail does to an opener. Anyone who has watched the same thing happen knows the phone call that follows, and for a fir or cedar door it is worth asking a shop that handles garage door repair glenwood springs co whether the rail can be rebuilt instead of the whole panel replaced. High-altitude sun usually gets the blame for a wood door going bad. The real culprit sat against the bottom of mine from December through March, plowed there by the county, and water is what ruins these doors long before ultraviolet light does.
Meltwater Wicks Straight Up A Bottom Rail
Wood takes on water fastest through its end grain. The bottom rail of a garage door is a long run of that end grain sitting a quarter inch off a concrete slab, and it is the one part of the panel a factory finish never fully protects, because doors get cut to height after they are coated. Now park a berm against it. Snow plowed off the apron does not simply melt away; it packs, thaws in the afternoon, refreezes overnight, and holds a wet compress against raw fiber for weeks at a stretch. On my door the stain looked perfect at eye level all winter while the bottom two inches were already taking on water. By the time it showed, that rail had gained enough thickness to change the geometry of the entire panel, and freeze-thaw finished the job, because water expanding inside the fibers pushes them apart and they never fully return.
Sun does matter, just on a slower clock. Thin mountain air lets ultraviolet light chalk a finish and open fine checks across the face of the door, and those checks then let in more water. Treat the face as the slow problem and the bottom edge as the fast one.
Swollen Stiles Bind Long Before They Rot
Rot is the ending, not the warning. Long before anything turns soft, a saturated bottom rail binds in the track, drags on the weather seal, or lifts crooked because one corner now weighs more than the other. What usually turns up on a door this age is damage confined to the bottom two inches of the stiles with everything above it perfectly sound. The opener absorbs the difference. A wood door runs heavy already, and waterlogged fir at the bottom edge means the motor and the counterbalance springs fight extra friction on every single cycle. A March 2026 breakdown of what garage door spring replacement costs put torsion spring life at 8 to 15 years, or roughly 10,000 to 20,000 opening and closing cycles, with replacement typically running $300 to $540 depending on the type of spring. A door that binds burns through those cycles faster than one that glides, so a neglected rail quietly turns into a spring bill nobody budgeted for.
An Autumn Checklist Prevents A Spring Repair
Almost everything that saves a wood door happens in September and October, before the first plow pass. Raise the door and get finish onto the bottom edge itself, all of it, including the sawn end grain nobody ever sees from the driveway. Two coats, sanded lightly between, and do not stop at the visible face. Set aside an afternoon for it. Honestly, a full weekend the first time, once you count stripping old finish around the hinge plates and waiting out cure times between coats. Replace the bottom weather seal while the door is up, since a torn retainer holds meltwater against the wood rather than shedding it. Then solve the berm, which means giving the plow somewhere to put snow that is not against your door, even if that costs you a gravel apron and five minutes with a shovel in January. If you want a defensible date to start, pull your average first hard freeze from NOAA’s Climate Data Online portal instead of guessing, then work backward three weeks so the finish cures in warm air. Skip all of it and you end up typing garage door repair glenwood springs co into your phone in April with the door stuck halfway up.
Season By Season The Door Should Behave
In the first week of December a well sealed door should sound exactly like it did in August, one smooth run with no hitch at the second panel. By week six of berm contact, somewhere around the middle of January, watch for the earliest tell: a faint scrape on the way up, or a bottom seal that stays compressed instead of springing back. By mid-March, if water got in, the door will tell you long before it quits, usually with an opener that strains at the same point in the travel every morning. Within 10 days of having the rail cut back, rebuilt and sealed, that hitch should be gone entirely and the door should reverse cleanly on the safety test. Give it a full season after that, and the honest measure of the repair is the following March, when nothing happens at all.
Common Questions About Refinishing Wood Doors
How Often Should I Refinish A Wood Garage Door?
A two year cycle is realistic for a door facing south or west at altitude. Sheltered doors under a deep overhang can stretch to three. The test that beats any calendar is a cup of water on the bottom rail, because beading means the finish is intact and soaking in means you are late.
Can A Swollen Bottom Rail Be Repaired Instead Of Replaced?
Often, yes, and it costs a fraction of a new custom panel. A shop that works on wood can cut back the damaged section, splice in matching stock, and rebuild the hardware mounts. Where the swelling has reached the hinge screws and they no longer hold, that section is usually past saving.
Is A Wood Door Worth Owning In A Snow Town?
It is, if you accept that maintenance is part of the purchase. A cedar or fir door on a two year refinish schedule will outlast the finish on most steel doors and keeps looking like the house it belongs to. Ignored for six winters, it becomes the most expensive door on the street to replace.
Treat The Bottom Edge Like Roofing
Nobody argues about sealing a roof edge, because everyone accepts that is where water attacks first. The bottom rail of a wood garage door deserves the same respect and gets almost none, which is why so many valley doors fail from the ground up while the stain still looks fine at eye level. Seal that edge every second autumn, keep the plowed snow off it, and have a wood door shop rebuild a rail early rather than quoting a replacement panel later. My door is on its third finish now and it opens the way it did the day we moved in.