- Thornton, CO · Serving the Denver Metro
Skip to content Wobbly posts. A beam that’s split along the grain. Rafters sagging in the middle. A frame that’s gone out of square and taken the whole structure with it.
Most pergolas that fail here didn’t fail because of the timber. They failed at the footings or the fasteners — and both are fixable without tearing the structure down. We repair and restore pergolas of every kind across Thornton and the north Denver metro, from a single rotted post to a full frame rebuild.
Send us a photo of what’s happening, and we’ll tell you what we see before anyone drives out.
Tell us what’s wrong, and we’ll look at it — no charge, no pressure.
Diagnosis First
A pergola is a simple structure, which is exactly why the failures are predictable. In almost every pergola repair service we’re called to, the problem is one of three things.
The footings. Posts set on surface blocks or shallow concrete move with the frost. Our frost depth is significant, and a post that lifts an inch over winter and doesn’t come all the way back down racks the frame above it. That’s the single most common cause of a wobbly pergola post, and it’s why re-tightening the hardware never fixes it for long.
The fasteners. Standard galvanized screws and bolts corrode here faster than people expect, especially near irrigation, hot tubs, or outdoor kitchens. The corrosion happens inside the joint, so by the time you see rust streaks on the timber, the connection has already lost strength.
Water sitting where it shouldn’t. End grain on a post base, a flat beam top that holds snow-melt, a ledger without proper flashing. Timber doesn’t rot evenly — it rots where water lingers, and that’s almost always a detail rather than a material problem.
The good news is that all three are repairable, usually without replacing the structure. Our local pergola repair services start with figuring out which one you have, because the fix changes completely depending on the answer.
What We Repair
From a single post to a full frame rebuild, we repair timber, metal, and vinyl pergolas across the metro.
Our most common job. A leaning or wobbly pergola post almost always traces to the footing rather than the post. We lift and re-support, set new footings below the frost line, and re-anchor with proper hardware so the fix holds through winter rather than until spring.
We sister, reinforce, or replace a split, sagging, or broken pergola beam depending on how far it’s gone. We check whether the span was undersized to begin with — a lot of kit pergolas are — because replacing like for like just resets the clock on the same failure.
We cut back to sound material, replace the affected sections with matching timber, and correct the detail that let water sit there in the first place. Replacing rotted wood without fixing the cause is a repair with a looming expiration date.
We replace corroded bolts, loose brackets, failed post bases, and missing connectors with hot-dip galvanized or stainless hardware. On a structure this light, the connections are doing most of the work.
Metal pergola repair covers bent or dented members, failed welds, seized or broken louver mechanisms, corroded fixings, and damaged powder-coat. Aluminum systems fail differently from timber and need different handling — we don’t treat them as the same job.
Power-washing, sanding, and re-staining or sealing to bring a grayed-out structure back to life. Full pergola restoration often means structural repair and refinishing together, which is both cheaper and better than doing them in separate visits.
Not sure whether yours needs a repair or a rebuild? The free inspection tells you — with a written scope and price — before you commit to anything.
Diagnose It
Not sure what’s wrong? Here’s how we diagnose and fix what we see most.
| Problem | What you’ll see | How we fix it |
|---|---|---|
| Wobbly or leaning posts | Movement when pushed; post out of plumb; gap at the base | Lift, re-support, new footings below frost line, re-anchor |
| Sagging rafters | Visible dip across the span; rafters bowing between beams | Add intermediate support, sister or upsize members |
| Split or broken beam | Crack along the grain; sagging at mid-span; visible separation | Sister, reinforce, or replace — and check the original span |
| Rotted post base | Soft, dark, or crumbling timber at ground level | Cut back to sound wood, replace section, correct drainage |
| Loose or rusted hardware | Rust streaks on timber; brackets moving; bolts turning freely | Replace with hot-dip galvanized or stainless fixings |
| Frame out of square | Diagonals uneven; joints opening; doors or gates binding | Re-square frame, add diagonal bracing, re-anchor posts |
| Grayed or flaking finish | Silver-gray timber; peeling stain; rough surface | Power-wash, sand, re-stain or seal |
| Seized louver mechanism | Slats won’t rotate; motor runs but nothing moves | Service or replace the mechanism; check for debris and corrosion |
| Storm or hail damage | Dents, torn canopy fabric, cracked panels, snapped members | Assess structurally first, then replace damaged components |
If your pergola is doing something that isn’t on this list, send a photo. We’ve seen most of it.
Straight Answer
The honest version. A pergola’s appearance rarely tells you which side you’re on.
A structure that looks terrible — gray, streaked, mossy — is very often sound underneath and an excellent candidate for pergola restoration. A structure that looks acceptable can be past saving if it never had footings. The inspection tells the difference, and we’d rather tell you honestly than sell you a bigger job.
If yours does need replacing, that’s our pergola installation service, and we’ll apply what we learned from the inspection to the new design.
Budget
We quote every repair individually after we’ve seen it. The variables that most affect local pergola repair cost include:
What we’ll tell you plainly: a pergola repair is almost always a fraction of a replacement, and the structures people assume are beyond saving usually aren’t. The inspection costs nothing and frequently ends with a smaller number than the homeowner expected.
When comparing quotes, ask whether the contractor is fixing the cause or the symptom. Replacing a rotted post without addressing why water sat there means paying for the same repair again in a few years.
How It Works
Send photos, and we’ll often tell you what we’re looking at straight away. If it needs an on-site look, the visit is free, and there’s no obligation.
We check posts, footings, beams, rafters, hardware, and any moving mechanism — not just the part that’s obviously failing. The visible problem and the actual cause are frequently in different places.
Repair, partial rebuild, or replacement, with a written scope and a fixed price. If a smaller fix will hold, you’ll hear that first.
Footings, posts, framing, and hardware before anything cosmetic. Re-staining a structure that’s about to move again is wasted money.
Power-wash, sand, and re-stain or seal where that’s part of the scope, with products rated for altitude UV.
We walk the finished structure with you, show you anything worth keeping an eye on, and explain the maintenance that will keep it there.
See the Difference
Drag the slider: a torn, sagging canopy on a sound frame, and the same pergola restored.
← Drag the handle to compare
WHY ALL PRO
Local Conditions
Groundwater freezes and expands, lifting whatever sits above it. Posts on shallow footings or surface blocks move, usually unevenly — which racks the frame, opens the joints, and is the root cause of most of the wobbly posts we’re called to.
Much of Adams County sits on bentonite-bearing clay that swells when wet and shrinks as it dries. Add sprinkler overspray near a post base, and the ground under one leg changes volume all season while the others stay still.
A pergola is a horizontal surface in the open with nothing above it to share the load. Spring storms drop real weight onto spans that were often sized for a milder climate, and open frames catch wind that a solid roof deflects.
Exposure at 5,000-plus feet is roughly 25 percent stronger than at sea level, so timber grays and finishes chalk faster than national ratings suggest. Hail does the rest — it’s the most common reason canopy fabric and powder-coat finishes need attention early.
Correcting the cause is why our repairs hold. Fixing the symptom is why so many don’t.
Service Areas
We’re based in Thornton and handle local pergola repair across the north Denver metro. Pergola repair in Arvada and the neighboring area is regular work for us, as is Northglenn, Westminster, Broomfield, Commerce City, Brighton, Denver, and the surrounding towns in Adams and Weld counties.
Conditions differ across that range, and so do the failures. Older Denver properties often mean structures that have stood long enough for footings to tell the truth. Newer developments more often bring kit pergolas that were undersized on day one.
Looking for local pergola repair near me in the greater Thornton area? Ask about your address — if we don’t cover you, we’ll say so rather than waste your time.
Reviews
Good to Know
A split or broken pergola beam can usually be sistered — a new member bolted alongside the damaged one to carry the load — or replaced outright if the damage runs the full span. The more important question is why it broke. If the beam was undersized for the span to begin with, which is common on kit pergolas, replacing it with the same size just resets the clock. We check the span calculation before deciding the fix.
Almost always at the footing, not the post. A wobbly pergola post that’s been re-tightened and moves again within a season has a footing problem — usually a shallow or surface-set base that frost has lifted. The lasting fix is to lift and re-support the post, set a new footing below the frost line, and re-anchor to proper hardware. Tightening the bolts treats the symptom.
Almost always at the footing, not the post. A wobbly pergola post that’s been re-tightened and moves again within a season has a footing problem — usually a shallow or surface-set base that frost has lifted. The lasting fix is to lift and re-support the post, set a new footing below the frost line, and re-anchor to proper hardware. Tightening the bolts treats the symptom.
It depends on whether the work is structural or cosmetic, how many members are affected, the material, and whether parts are still available for proprietary systems. A single post and footing is a very different job from re-framing a structure. We quote in writing after an inspection — and a pergola repair is almost always a fraction of what replacing the structure would cost.
Yes. Local pergola repair covers bent members, failed welds, corroded fixings, damaged powder-coat, and seized or broken louver mechanisms. Aluminum systems fail differently from timber and need different methods, so we don’t treat them as the same job.
Almost certainly not. Graying is surface UV damage and says very little about structural condition. Power-washing, sanding, and re-staining bring most grayed timber back, and a pergola restoration like that is one of the cheapest ways to transform how a backyard looks.
If the footings are sound and the damage is limited to a few members, a finish, or hardware, repair is usually much better value. Replacement makes sense when rot runs through multiple posts and beams, when the structure was undersized from the start, or when the posts were never properly footed. We’ll give you a straight answer after looking at it.
Yes — that’s most of our local pergola repair work — kits, other contractors’ installations, and previous repairs that didn’t hold. We’ll tell you plainly what was done before and what it takes to fix it, without tearing down whoever did it.
Most local pergola repair jobs are quick. Small repairs — hardware, a single post, refinishing — are often a day or two. Structural work on multiple members, re-footing, or re-squaring a frame runs longer, and anything involving new footings needs cure time. We give you a realistic timeline at the quote.
If that’s what’s causing the failure, yes, and we’ll recommend it. Replacing a rotted post without changing why water sat against it means doing the same repair again in a few years. Correcting grade, redirecting a downspout, or adjusting sprinkler coverage is usually a small part of the job and the part that makes the rest last.
Often, yes. Seized louver mechanisms, failed motors, and torn canopy fabric are frequently serviceable or replaceable without touching the frame. Whether parts are still available depends on the manufacturer — we’ll check before quoting.
Often, yes. Seized louver mechanisms, failed motors, and torn canopy fabric are frequently serviceable or replaceable without touching the frame. Whether parts are still available depends on the manufacturer — we’ll check before quoting.
We cover Thornton, Arvada, Northglenn, Westminster, Broomfield, Brighton, Commerce City, Denver, Aurora, and the surrounding north metro, plus much of Adams and Weld counties. If you’re searching for pergola repair near me from anywhere in the greater Thornton area, we most likely cover you.
Yes, and it’s worth checking both at once. A deck pergola transfers its loads into the deck frame, so a post problem up top sometimes traces to a joist or beam below. We inspect the two together rather than treating the pergola in isolation.
Call and talk to someone who’ll be on the crew — not a call centre.
Open 7 days · 8:00 AM – 7:00 PM
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Most pergolas we’re called to look at need less work than the owner expected. A leaning post is usually a footing. A gray, tired-looking structure is usually sound underneath. A broken beam is usually a small repair job, not a reason for a full replacement. Our team of local pergola repair experts can help assess the damage and point you in the right direction.
Send us a few photos or book a free on-site inspection, and we’ll tell you honestly what your pergola needs — repair, restoration, or replacement — with a written scope and a fixed price.
