Northglenn Trex Deck Rebuild: Engineered Piers, Delivered a Week Early

Finished Trex composite deck with black aluminum railings and rebuilt stairs at a Northglenn Colorado home, wrapped around a mature backyard tree

Project Information

Project Type: Exterior renovation – New deck & concrete patio
Client: John Steve
Location: 11903 Quam Drive, Northglenn, CO 80233
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"Tomer got it done and exceeded all of my expectations."

John Steve · Northglenn homeowner · 5-star Google review
The Project

A backyard rebuild John couldn't be there for

John hired us for a full backyard rebuild in Northglenn. The old wood deck was resting on a concrete patio that tree roots had already broken apart. The tree itself was starting to lift the slab. Tomer's crew took the whole thing back to dirt.

Then we set three engineered piers, poured about 300 square feet of new concrete, built a steel frame per the engineer's plans, and installed a 12 by 14 Trex composite deck with new stairs and aluminum railings. John was out of state for the entire build. Five weeks later he walked onto a finished deck one week ahead of contract.

168
sq ft deck
5
weeks (1 early)
3
engineered piers
5★
Google review

Before: the tree-damaged deck and patio in John's Northglenn backyard

After: John's finished Trex deck and new concrete patio

The rebuild

The deck John couldn't watch in person

John's backyard had a wood deck resting on a concrete patio that tree roots had already broken apart. The tree itself was starting to lift the slab. He was out of state and running against a tight timeline. Five weeks later he walked onto a finished Trex deck, delivered a week ahead of contract.

What was there

Before we started

  • Wood deck on a damaged concrete slab
  • Tree roots lifting the patio
  • No engineered foundation
  • Wood rail with soft spots
  • Weathered stairs, water-checked treads
What we built

For John

  • 12' × 14' Trex composite deck (168 sq ft)
  • Three engineered piers on 3-ft footers
  • Steel frame per engineer's plans
  • Aluminum railings and matching handrail
  • ~300 sq ft of fresh concrete slab

Three calls we made before we broke ground

🔩

Trex composite over pressure-treated wood

Colorado's dry summers and freeze-thaw winters chew through pressure-treated boards. Trex holds color and doesn't splinter. No re-stain every couple of years.

🏗️

Steel frame over dimensional lumber

Steel keeps geometry true across seasons and carries a longer warranty than a wood joist system. It also lets us span farther with fewer piers.

📐

Three engineered piers over a floating slab

Piers go below the frost line and sit on undisturbed soil. Root movement stops telegraphing up into the deck. An engineer signed off on the plan before we broke ground.

Design decisions

Why we made every material call

Nothing on this deck was chosen because it was cheap or already in the truck. Each material earned its place for Colorado's climate and the way John's yard was set up around a mature backyard tree.

🌡️

Trex holds color and shape

UV, freeze-thaw, dry summers. Pressure-treated needs sealing every couple of years and still checks. Trex looks the same in year ten as it does the day you walk onto it.

Steel frame is exact and stays exact

Wood joists swell, shrink, twist. Steel doesn't. Longer warranty, longer spans between piers, no seasonal movement to chase down.

🌳

Piers below the frost line

The old patio was already lifting. Piers go past the freeze depth and sit on undisturbed soil. An engineer signed off at every stage.

🛡️

Aluminum rail beats wood every year

Doesn't warp or rot. Holds paint through Colorado winters. Sightlines through the balusters stay clean, so the tree stays part of the view.

Rear elevation of finished Trex deck at a Northglenn home showing engineered pier foundation, structural framing, and 300 sq ft of new concrete
The build

Every material, and why we chose it

Nothing here was picked because it was cheap or already in the truck. Each brand and product earned its place for Colorado weather, John's yard, and a deck that has to outlive its own tree.

Fade and stain warranty backed by Trex. Holds color through UV and freeze-thaw. Won't splinter, doesn't need re-staining. The right board for Colorado sun.
Powder-coated, spaced for code, engineered for wind load. Won't warp, won't rot, and the paint holds through Colorado winters.
Steel Deck Framing
Built to the engineer's spec. Longer span capacity than dimensional lumber, no seasonal swell or twist, and a longer warranty than a wood joist system.
Engineered Piers & New Concrete
Three piers on 3-foot footers past the frost line, plus about 300 sq ft of fresh slab poured to grade for drainage. Rebar-reinforced and cured before the framing crew came back.
Timeline

5 weeks, four phases

Contract signed June 23, 2026. Handoff August 3, 2026. Delivered a week ahead of a 6-week contract. Engineered foundations, tree removal, steel framing, and a Trex install stayed on a tight sequence.

Week 1
Demo and tree removal
Old deck came off. Cracked patio broke up and hauled out. Tree came down. Site went back to dirt.
Weeks 2–3
Piers and concrete pour
Dug three 3-foot footers on the engineer's marks. Set the piers and let them cure. Poured the new slab to grade.
Week 4
Steel frame and Trex install
Built the steel frame to plan. Laid the Trex composite boards, cut the fascia, and rebuilt the stairs. Engineer walked it before we moved on.
Week 5
Rail, punch, hand-off
Aluminum railing went in. Punched every board and joint, then rechecked the rail. Handed off to John.

Tomer's note. John was in another state for the entire build. Daily photo updates, FaceTime engineer inspections, text approvals. He walked onto a finished deck one week early.

Close-up of Trex composite stair treads and black aluminum railings between the deck framing and brick foundation at a Northglenn rebuild

"Tomer got it done and exceeded all of my expectations." I recently got a deck and concrete patio done by Tomer and his crew and they did an absolutely excellent job. I was out of town and had a very tight timeline and they finished it a week ahead of schedule, and Tomer was extremely communicative the entire time. It was a pretty big ask and a pretty big project for someone to do a project this big while I wasn't even in the state. I felt very comfortable the whole time and he updated me every step of the way, and got an engineer to inspect every step of the project. I called about 8 places to get quotes and Tomer was one of the few people that was responsive, sent a full quote, and plans very quickly. He seemed trustworthy and serious about his business right off the bat and I couldn't be happier that I went with Verified Builders for my deck. It looks amazing.

JS
John Steve
Northglenn homeowner · 5-star Google review
Project details

The facts

LocationNorthglenn, CO 80233 (north Denver metro)
Address11903 Quam Dr, Northglenn, CO
Deck footprint12' × 14' Trex composite (168 sq ft)
Concrete~300 sq ft new pour
FoundationThree engineered piers on 3' footers
FrameSteel, built to engineer's plans
RailingAluminum, powder-coated
Duration6 weeks contracted, 5 weeks delivered
Contract signedJune 23, 2026
CompletedAugust 3, 2026 (1 week early)
ClientJohn Steve
Project managerTomer Siso
Engineer inspectionEvery phase
Review5-star Google (public)
FAQ

Questions we get about Denver-area deck builds

How much does a Trex deck cost in Denver in 2026?

A basic Trex deck on flat, uncomplicated ground runs about $55 to $95 per sq ft installed in the Denver metro right now. John's project ran higher for real reasons. Tree removal came first. Then three engineered piers, a full steel frame, and roughly 300 square feet of new concrete on top of the deck itself. Ask us for a real quote against your own yard, not an internet average. Our deck building service page has scope options.

How long does a deck build take in Denver?

Four to eight weeks is typical from contract to handoff for a deck of this scope. John's took six weeks in the contract and finished in five. What stretches a job is engineering, tree work, concrete cure time, and permit review. What shortens it is a clear scope and a single crew running the sequence.

Do I really need a structural engineer for a residential deck?

You do if your deck sits on piers, spans more than a short run to grade, or if the ground under it has root or soil issues. John's yard had tree roots lifting the old patio. Piers went below the frost line and got an engineer sign-off at every stage. That's how a deck outlives the tree that used to shade it.

Why Trex composite instead of pressure-treated wood?

Colorado's climate is hard on wood. UV and freeze-thaw, with dry summers on top of that. Pressure-treated needs sealing and re-staining every couple of years and still checks and cracks. Trex holds color and shape without the yearly upkeep. Ten years in, the deck should still look like the day John walked onto it. See our Denver decking materials guide for the full comparison.

Can Verified Builders run a project while I'm out of state?

Yes. John was out of state for the entire build. Tomer sent daily photo and video updates, walked the engineer through each inspection on FaceTime, and got approvals by text. The deck was finished a week before John flew back.

Building or replacing a deck in the north Denver metro?

Talk to Tomer. Tell us what's in the yard and what you want the deck to do. We'll come out and measure, then send back a real quote.

See our deck building service
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