Door & window repair, statewide
Patio Door Repair
Whatever leads out to your deck, porch or yard
Patio doors are not one product. Sliding, French, hinged, atrium and folding doors all open onto the same weather and all fail in their own way. We repair every one of them.
The largest opening in the house, and the most exposed
Sliding and hinged patio doors are different machines solving the same problem, and they fail in completely different ways.
A sliding patio door carries its weight on rollers and seals along an interlock where the panels meet. When it fails, it fails horizontally: rollers flatten, the rail wears, panels drop and the interlock stops seating, so the door drags and leaks air along its closing edge.
A hinged patio door — French, atrium or centre-hinged — carries its weight on hinges screwed into a jamb. When it fails, it fails vertically: the slab sags, the two leaves stop meeting in the middle, the multi-point lock will not throw, and you get a visible gap down the centre of the opening.
What they share is exposure and a threshold. Both sit at the point where a deck or patio meets the house, both take wind-driven rain head-on, and both rely on a sill that drains water back outside rather than into the framing. In a coastal state with a high water table, that drainage detail is the one most worth getting right.
If you are not sure what yours is called, a photo is enough. We identify systems visually every day, including doors whose manufacturers no longer exist.
The hardest-working opening in a Delaware house
A patio door is the largest glazed opening in most homes, it takes the full force of whatever the weather is doing, and it gets used constantly through a long mid-Atlantic summer before being sealed tight for winter.
That combination is punishing. Seals compress and harden, thresholds take standing water, hinges carry heavy glazed slabs and sliding panels carry their whole weight on small wheels. None of it is unusual and none of it means the door is finished.
The one thing we would flag early is water. A patio threshold that holds water rather than draining it will rot framing and flooring behind it, and in Delaware's damp, low-lying ground that happens faster than most homeowners expect. That repair is considerably larger than the one you could have had.
Sliders fail horizontally, hinged doors fail vertically. Both start at the threshold.
What we repair on a patio door
The panel, the frame, the threshold and everything that moves or seals.
Sliding gear and rollers
Rollers, rails, guides and anti-lift hardware on sliding and stacking patio doors.
Hinges and sagging slabs
Heavy glazed French and atrium panels that have dropped, with hinges reinforced and anchored into framing.
Weatherseals and thresholds
Compressed and hardened seals renewed, and thresholds reset so the door seals without dragging.
Locks and multi-point hardware
Locks that will not throw, keepers out of line, and security upgrades on the most vulnerable opening in the house.
Glass panels
Cracked, shattered and fogged patio door glass reglazed in tempered safety glass.
Drainage and sill repair
Blocked weeps cleared and damaged sills repaired before water reaches framing or flooring.
The problems Delaware patio doors have
Coastal exposure, damp ground and a very seasonal pattern of use.
Wind-driven rain off the water
A patio door is tested hardest not by rainfall but by rain driven horizontally at it. Nor'easters and tropical remnants do exactly that across the whole state, and once interlock gaskets harden and the sill drainage silts up, the water goes inward instead of back out.
Low ground and a high water table
Delaware is the lowest-lying state in the country, and a great deal of its housing sits close to grade with decks and patios at or near threshold height. Water that cannot drain away sits against the sill, and wood-framed construction does not tolerate that indefinitely.
Six months on, six months off
In the coastal towns especially, a patio door is opened dozens of times a day through the season and then shut for the winter. Hardware wears hard in summer and seals are tested hard in winter, so nothing ever really gets a rest.
Why we are the state's patio door specialists
Sliding gear and heavy hinge work are different trades. We do both.
Every patio door type
Sliding rollers one day, sagging French doors the next. Most companies do one or the other, which is why people get told a working door needs replacing.
Water taken seriously
We check drainage and sill condition on every patio door we touch, because that is what turns a small repair into a structural one.
Security on the weak point
Patio doors are the most common point of forced entry. We will tell you plainly where yours is weak and what fixes it.
Free estimates
No charge to look, and a firm price before any work starts.
Three steps, no runaround
Tell us what it is doing
Dragging, sagging, leaking, draughty or will not lock — each points somewhere different.
We diagnose on site
Panel, frame, threshold, drainage and hardware, then a firm price.
We repair it
Most work completed the same visit; glass follows once cut to size.
We are a mobile service covering all three counties. Pick your city below, or call and we will come to you.
Patio Door Repair Across Delaware
Patio door questions
Do you repair French patio doors as well as sliders?
Yes. They fail differently — sliders wear out rollers, French doors sag on their hinges and stop meeting in the middle — and we handle both.
My patio door leaks during heavy rain.
Usually blocked sill drainage or hardened weatherseals, sometimes both. Neither means a new door, and both are worth sorting before water reaches the framing.
The threshold feels soft.
That is water that has been sitting where it should have drained. If it is caught before it reaches the structure behind, it is repairable. We will tell you honestly how far it has gone.
Can you make a patio door more secure?
Yes. Auxiliary locks, anti-lift hardware, reinforced strikes and long screws into framing all make a real difference on this particular opening.
My patio door is from the 1980s. Are parts available?
Usually. Most patio door hardware belongs to a small number of families, and we can source or adapt for the large majority of older systems.
Other repairs we handle
Doors and windows are all we do, so whatever has failed, it is probably on this list.
Get the patio door sorted
Free estimates anywhere in Delaware, on any type of patio door.
(302) 406-0168