Sliding Glass Door Repair in Portland, OR
Rollers, Tracks, Locks, Screens, Drafts and Sill Leaks. Honest Repair-or-Replace Advice. Milgard Warranty Service Provider. Licensed OR #241979.
A sliding glass door should glide with two fingers, lock tight, and keep rain on the deck where it belongs. When it starts grinding, jumping the track, leaking at the sill, or letting in cold air, most homeowners assume they need a new door. Often they do not. Worn rollers, a dirty or bent track, a loose latch, or tired weatherstrip can usually be repaired in a single visit for a fraction of the cost of replacement.
VResh repairs sliding glass doors throughout the Portland metro and Southwest Washington. Vlad diagnoses the door in person, explains what is causing the problem, and tells you plainly whether a repair will hold up or whether the door has reached the point where sliding glass door replacement is the better use of your money. VResh is also a Milgard Warranty Service Provider, so if your slider is a Milgard, we can help you find out whether the problem falls under the manufacturer's warranty.
(503) 272-6436 — Call or Text, Available 24/7
We answer calls and texts at any hour. For storm damage, active leaks, or structural emergencies, calling directly is the fastest path to a response.
Common Sliding Door Problems We Fix in Portland
01. Hard to Open, Grinding, or Jumping the Track
This is the most common call we get. Sliding doors ride on small rollers set into the bottom of the panel. Over the years, the wheels flatten, the bearings seize, or the plastic tires crack, and the panel starts dragging on the track instead of rolling. Dirt, grit, and pet hair packed into the track accelerate wear. A panel that drags long enough can grind a groove into the aluminum rail. In most cases, new rollers and a cleaned, straightened track bring the door back to an easy glide. Roller replacement typically runs $150 to $400.
02. Drafts and Cold Air Around the Panels
Weatherstrip on a sliding door wears out faster than on a hinged door, because the panel slides against it every time it opens. Once the pile strips flatten or tear, air moves freely through the gaps, especially at the interlock where the two panels meet. A door that sits too low on worn rollers can also pull away from its seals at the top. In a Portland winter, that shows up as a cold strip of floor and a whistle on windy nights. New weatherstrip and interlock seals, plus a roller adjustment to lift the panel back into its seals, fix most drafts.
03. Water at the Sill During Portland Rain
With about 37 inches of rain a year, a sliding door sill gets tested every winter. The track is designed to collect water and drain it out through small weep holes at the front of the frame. When those weeps clog with leaves, grit, or old caulk, water backs up in the track and spills over the inside edge onto the floor. Clearing and testing the weeps often solves it. If the leak continues after that, the door may have been installed without a sill pan, or the sealant under the frame has failed. That is a bigger repair, which we explain below.
04. Locks That Will Not Catch
If you have to lift or shove the door to get it to latch, the panel has usually dropped or shifted, so the latch hook no longer lines up with the keeper on the jamb. Adjusting the rollers to raise the panel often fixes it in minutes. If the latch itself is worn, bent, or broken, we replace the handle set and latch with parts matched to the door. For extra security on a ground-floor slider, we can also add a secondary foot lock or a security bar so the door cannot be opened even if the main latch is forced.
Sliding Door Symptoms, Causes, and Repairs
Heavy, grinding, or rough slide
The rollers are worn flat, or their bearings have seized, and grit in the track adds friction.
We replace the rollers, clean the track, and set the panel height. The door should move with light hand pressure afterward.
Door jumps or comes off the track
The track rail is damaged, the rollers are set too low, or a roller housing has broken.
We repair or cap the rail and replace and adjust the rollers so the panel rides centered on the track.
Bumps or flat spots felt when sliding
The aluminum rail is bent or worn into a groove by a dragging panel.
We straighten the rail where possible or install a stainless track cover over it. Either gives new rollers a smooth surface to ride on.
Lock will not catch
The panel has dropped, the keeper is out of line, or the latch is worn.
We raise the panel, realign the keeper, or replace the handle and latch. We fix the panel height first, because a new latch on a dropped panel will not catch either.
Screen door drags or falls out
The screen rollers are worn, the screen frame is bent, or the mesh is torn.
We replace the screen rollers, rescreen the frame, or build a new screen door when the old frame is too bent to save.
Fog or moisture between the glass panes
The seal on the insulated glass unit has failed, and moist air has gotten between the panes.
We replace the sealed glass unit or the operating panel. Fog between the panes cannot be cleaned away.
Drafts or whistling
The pile weatherstrip has flattened, or the interlock seals are worn.
We replace the weatherstrip and interlock seals and adjust the rollers so the panel presses evenly into them.
Water on the floor inside the sill
The weep holes are clogged, the sealant under the frame has failed, or there is no sill pan.
We clear the weeps and reseal the sill, then inspect the subfloor for rot. A missing sill pan means the door has to come out to fix the leak for good.
Uneven gap or panel rubbing the frame
The panel is sagging on one roller, or the frame has shifted as the house settled.
We adjust or replace the rollers and reset the fixed panel as needed to ensure the gaps are even from top to bottom.
Sliding Door Repair — What the Project Involves
Repair a Panel, Replace a Panel, or Replace the Door
Most sliding door problems are repairable, but not all. Here is how we decide:
When Repair Makes Sense
The frame is square, the sill is dry and solid, the glass is clear, and the problem is rollers, track, latch, screen, or weatherstrip. A repair in this situation usually costs a few hundred dollars and can give the door many more years of service. We also adjust the fixed panel and reseal the frame where needed, so the whole door works as a unit.
When to Replace the Glass or Panel
If fog or moisture shows between the panes, the seal on the insulated glass unit has failed. The glass cannot be cleaned from inside; the sealed unit has to be replaced. On many doors, we can order a new glass unit or a complete new operating panel and keep the frame. This makes sense when the rest of the door is in good shape.
When to Replace the Whole Door
Replacement is the better value when the frame is bent or out of square, the sill is rotted, the door has leaked into the subfloor, parts are no longer available, or both panels have failed glass. It also makes sense when an old aluminum single-pane door is costing you heat all winter. A standard two-panel sliding glass door typically runs $2,200 to $4,500 installed; see sliding glass door replacement. If you are rethinking the opening, patio and French doors are another option.
Hinged patio, back, or entry doors have their own set of problems, from sagging hinges to rotted thresholds. For those, see our exterior door repair page.
Leaks and Rot Under Sliding Doors
Water at the sill is the sliding door problem we take most seriously. Many older sliders in the Portland area were set directly on the subfloor with a bead of caulk and no sill pan. When the caulk fails or the weeps clog, water runs under the frame and into the subfloor and rim joist, sometimes for years before anyone notices soft flooring, lifting laminate, or stains on the ceiling below.
If the leak is coming through clogged weep holes or a failed sealant, we clear and reseal them as part of the repair. If we find soft wood, we explain how far the damage extends and what it takes to fix it properly, which usually means removing the door, repairing the framing, and reinstalling it with a sloped sill pan. See our dry rot repair page for what that work involves. In pre-1978 homes, we follow EPA Lead-Safe (RRP) practices whenever painted trim is disturbed.
Client's Talk
Serving Portland Metro Area
VResh Construction repairs and replaces sliding glass doors, entry doors, patio doors, and windows throughout the Portland metro area and Southwest Washington.
Portland Metro — Oregon
- Portland, OR
- Oak Grove, OR
- Cedar Mill, OR
- King City, OR
- Happy Valley, OR
- Clackamas, OR
- Milwaukie, OR
- Gresham, OR
- Wood Village, OR
- Scappoose, OR
- Sandy, OR
- Newberg, OR
- Estacada, OR
- Lake Oswego, OR
- Beaverton, OR
- Hillsboro, OR
- Tigard, OR
- Sherwood, OR
- West Linn, OR
- Oregon City, OR
Southwest Washington
Extended Service Areas
Sliding Door Repair FAQs — Portland Homeowners
How much does sliding door repair cost in Portland, OR?
Roller replacement, the most common repair, typically runs $150 to $400. Track repair, weatherstrip, and handle or latch replacement often fall in a similar range, depending on parts and the door's condition. Replacing a fogged sealed glass unit costs more than replacing a window unit because door glass is larger and must be tempered safety glass. We give you a written price after diagnosing the door.
Why is my sliding glass door so hard to open?
Almost always because the rollers are worn or seized, the track is packed with dirt, or both. The panel ends up dragging on the track instead of rolling. Cleaning the track helps for a while, but if the rollers are worn, they need to be replaced and adjusted.
Can you fix fog between the panes of my sliding door?
Fog between the panes indicates the insulated glass seal has failed and cannot be cleaned away. The fix is replacing the sealed glass unit or the operating panel. If the frame is sound, that costs much less than a new door.
Why does water come in under my sliding door when it rains?
The most common cause is clogged weep holes at the front of the track, which stop water from draining out. A failed sealant at the sill and a missing sill pan are other common causes. We clear and reseal what we can and check the subfloor for rot.
Should I repair or replace my old sliding door?
Repair if the frame is square, the sill is dry, and the problem is hardware, weatherstrip, or a screen. Replace if the frame is bent, the sill is rotted, parts are unavailable, or it is an old single-pane aluminum door. See our exterior door replacement page for your full range of door options.
How long does a sliding door repair take?
Most roller, track, latch, and weatherstrip repairs take a few hours in a single visit once parts are on hand. Glass unit and panel replacements need to be ordered, so they take two visits: one to measure and one to install.
Can you repair a sliding screen door?
Yes. We replace worn screen rollers, rescreen torn mesh, straighten bent frames, and fit new screen doors when the old one is too damaged to repair. A screen that drags or falls out of its track usually just needs new rollers and an adjustment.
How can I keep my sliding door working smoothly?
Vacuum the track a few times a year, keep the weep holes at the front of the frame clear, and wipe the weatherstrip. Use a dry silicone spray on the track, not oil or grease, which collects grit. If the door starts to drag, have the rollers adjusted before they wear into the track.
Get a Free Door Estimate
Vlad comes out, identifies the real cause of the problem, and gives you a straight, written price for the repair. If replacement is the better value, he will tell you that too. No sales pressure and no commitment required.
- Same-day response on all estimate requests
- No commission-based sales, just honest quotes
- Licensed OR #241979 · WA #VRESHCL776ND
- Milgard Warranty Service Provider
- Written workmanship warranty on our repairs
