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Replacing a Wood Patio Cover With Aluminum in Las Vegas

Written October 8, 2026. Building department pages and city codes were read on October 8, 2026.

Key Takeaways:
Gray, faded wood is not the test. A wood patio cover is done when the wood is soft, crumbling or eaten where it meets the house or the ground.
Rot needs water. On a patio cover here, the wet spots are the board against the house and the bottom of each post.
The Nevada Department of Agriculture lists a drywood termite as native to southern Nevada and a dampwood termite found, in Nevada, only in Clark County.
A new cover can be built over an existing concrete patio. Old footings can sometimes be reused. The wood cannot.
Clark County and the cities of Las Vegas, Henderson and North Las Vegas all require a building permit for a patio cover. We handle the entire permit process.

How do I tell my wood patio cover is done?

Check three places: the tops of the boards that sit in the sun, the board fastened to the house, and the bottom of every post. Sun damage shows first and matters least. Rot and termites show last and take the strength out of the wood. You need a ladder, a flashlight and a flat screwdriver.

Our Alumawood versus wood comparison covers why this climate is hard on wood. This post is about the replacement itself.

What does sun damage look like, and when does it matter?

It looks like gray, rough wood with cracks along the grain, and by itself it is slow. The USDA Forest Products Laboratory's Wood Handbook says ultraviolet light breaks down lignin, which it calls the glue that holds wood cells to each other, and that the loose fibers wear off the surface at about a quarter inch of wood in a century.

The cracks are the real problem. The handbook says wood warmed by the sun dries and shrinks at the surface while the inside can still be swollen, and the stress causes checks, cracks, warping and cupping. It also reports that south-facing siding cupped and warped more in Phoenix than in South Florida, Ohio or Wisconsin, because of larger and faster humidity swings.

On a patio cover, three things mean the wood has stopped working as structure: a split that runs through the end of a rafter or along a line of bolts, boards twisted far enough to pull their fasteners, and a beam that sags when you sight along it. Gray color alone does not.

Where does rot start on a patio cover in the desert?

Where the wood stays wet: against the house and at the bottom of the posts. What people call dry rot is not dry. The Nevada Department of Agriculture's manual for pest control operators says the name is used incorrectly, "as wood must be moist to decay." It is brown rot that has dried out, and the manual says brown rot fungi are the major cause of decay of wood products in Nevada.

The manual says decay is fastest when the moisture content of the wood is between 25% and 32%. Wood touching soil is the primary concern, because moisture soaks directly into the wood. It names areas where sprinklers contact a structure among the places moist, rotting wood is commonly found.

Southern Nevada's building departments share a standard drawing for a wood-framed patio cover, regional standard B-102. It shows what protects those two spots: flashing over the ledger, which is the board fastened to the house wall, and a metal post base that holds each post 1 inch above its concrete footing.

  • At the house. Look for metal flashing over the top of the ledger. Without it, water running down the wall can get behind the board.
  • At the posts. Look for a metal base and a gap under each post. A post that sits flat on the slab, or disappears into soil, pavers or a planter, can soak up water.

Push the screwdriver into both spots. Sound wood stops it. Rotted wood lets the tip sink in. The manual describes brown rot as brown wood, cracked across the grain in a cubical pattern, with a crumbly texture that turns to fine powder when crushed. A soft ledger or a soft post bottom means the cover is done, because those are the two places it is held up.

Which termites live in southern Nevada, and what do they leave behind?

Subterranean, drywood and dampwood termites all live here, according to the same manual, which calls termites the major wood-destroying pests in Nevada. Each leaves a different sign.

TermiteWhere the manual says it livesWhat to look for
Arid land subterranean termiteStatewideMud tubes, commonly built in the gap between the soil and the structure.
Tube-building desert termiteSouthern and western deserts below about 6,000 feet. Becoming more common in southern Nevada.Irregular tubes and broad, earth-like crusts on fences and old decorative wood. Damage is usually less severe.
Western drywood termiteNative to southern Nevada. Lives above ground in dry, sound wood.Small piles of seed-like, usually straw-colored pellets below the wood. Paint with a blistered look.
Desert dampwood termiteIn Nevada, only Clark CountyDamage to untreated posts just below ground level. Rated of minor importance.

The drywood termite never touches the ground. The manual says it gets all of its moisture from the dry, sound wood it eats, so a rafter over your head is fair game. The tube-building desert termite generally flies during or after afternoon and evening rain showers, from mid-June into late September.

We do not inspect houses for termites. If you find tubes or pellets on a cover attached to your house, have a pest control company look at the house before the new cover goes up, because the fascia and wall framing stay. Four Seasons Building Products lists the Elitewood covers we install as termite resistant.

What can be reused, and what cannot?

The slab can stay, the footings sometimes can, and the wood cannot. A new cover can be built over an existing concrete patio, so the slab keeps being the floor.

Whether the slab can also hold up the posts is a separate question. The manufacturer's building code report for these covers, ICC-ES report ESR-1953, says that when a post carrying more than 750 pounds is attached to a 3.5-inch slab with no footing, a registered design professional must provide a design and calculations for the code official. In plain terms, a lightly loaded post can sit on the slab, and a heavier one needs a footing or an engineer's design.

That is why old footings are a maybe. Tables in the new cover's engineering plans set the post spacing and footing size. The regional standard for wood covers calls for footings that reach 12 inches below grade and measure 12 to 20 inches square, depending on post spacing and rafter span. An old footing can serve only if it is big enough and sits where a new post lands, and nobody can see how big a buried footing is without digging beside it.

Cody Peterson, the owner of City Seamless, says "the price varies based on these different variations and variables at the property," and footings or an existing slab is one he names. Our cost factors post covers what moves the number.

The wood all goes. A fan or light on the old cover has to be disconnected first. Our fans, lights and electrical planning post covers the wiring for the new one.

How does the new cover attach to the house?

An attached patio cover is bolted to the fascia board or exterior wall of the home and uses the house as one side of its support. Where and how it attaches is set by the new cover's engineered plans, not by where the old ledger was. The code report says the engineering plans give the loads the house has to resist, and that the adequacy of the house to carry them must be justified by a registered design professional when the jurisdiction requires it, subject to the code official's approval.

On a replacement, the moment that matters is when the old ledger comes off. That is the first time anyone sees the fascia or wall behind it. If rot or termites got into that wood, it has to be made sound before anything is bolted to it. Low fascia, second-story windows, roof returns and stucco details can also limit what works.

When the house does not have a good attachment point, the cover can be freestanding and take all wind forces through its own posts and footings. Our attached versus freestanding post goes through that choice.

Does replacing a patio cover need a permit?

Yes. Clark County and the cities of Las Vegas, Henderson and North Las Vegas all require a building permit for a patio cover installation, and a replacement is a new installation with its own engineering. Here is what each one's own page or code says.

JurisdictionWhat it saysBuilding department
Clark County (unincorporated)The Building Department's permit page says an owner who intends to "construct, enlarge, alter, repair, move, demolish" a structure "shall first make application to the department and obtain the required permit."(702) 455-3000
City of Las VegasA Building and Safety advisory says residential patio projects using an approved agency design, such as ICC ESR 1953, "will only require a dimensioned, signed site plan" and "a fully completed patio application."(702) 229-6251
HendersonMunicipal Code 15.01.125 says no structure shall be built, altered, "removed, converted or demolished" unless the appropriate permit "has first been obtained from the building official."(702) 267-3650
North Las VegasMunicipal Code 15.72.140 has nearly the same list and requires "a separate, appropriate permit for each building, structure or building service equipment."(702) 633-1577

Notice "demolish" and "removed" in those lists. Ask your building department how it wants the tear-out handled. We handle the entire permit process, from plan submission to final inspection, and our permit guide has the steps.

You can also look up whether the old cover ever had a permit. A permit means there was an approved plan for what is under the old posts. Clark County's building page links to a Permit History search, and the City of Las Vegas permit page has a permit search. Rules change, so confirm anything here with your building department.

What do tear-out and haul-off involve?

Removal of the old structure, cleanup and installation of the new cover are handled as one project.

A tear-out usually runs in this order. Power to any fan or light on the old cover is shut off and disconnected. The roof boards or lattice come off, then the rafters, the beam and the posts, and the ledger last. The old post anchors are cut off or pulled, and the holes the ledger left in the wall need to be sealed. The old lumber is hauled away.

You can make that day go faster:

  • Clear furniture, grills and pots from under and around the cover.
  • Tell us where sprinkler and drip lines run near the posts.
  • Tell us how wide the side gate is.

What should I photograph and measure before calling?

Three measurements and a set of photos.

  1. Measure the width along the house, the projection away from the house, and the height at the attachment point.
  2. Photograph the whole cover from the yard, straight on and from each end.
  3. Photograph the ledger up close where it meets the house.
  4. Photograph every post bottom up close, with the slab, soil or pavers around it.
  5. Photograph what you found: splits, soft spots with the screwdriver left in for scale, mud tubes, pellet piles.
  6. Photograph the slab and any pavers, and the fan, lights and switch if the old cover has them.
  7. Write down your address, the kind of cover you want, what the permit search turned up, and whether you have an HOA. Our permit and HOA checklist covers that part.

Frequently asked questions

How do I know if my wood patio cover needs to be replaced?

Push a screwdriver into the board fastened to the house and into the bottom of each post. If the tip sinks in or the wood crumbles into brown cubes, the cover is done. Gray color and small surface cracks alone are not the test.

Are there termites in Las Vegas?

Yes. The Nevada Department of Agriculture manual lists the arid land subterranean termite statewide, the western drywood termite as native to southern Nevada, and the desert dampwood termite in Clark County.

Can a new aluminum patio cover go on my existing concrete slab?

A new cover can be built over an existing concrete patio. Whether the slab alone can hold the posts depends on the post loads in the engineering, and some posts need footings.

Can the old footings be reused?

Sometimes. They have to be where the new posts land and big enough for the new cover, and footing size comes from the engineering tables for the new cover.

Do I need a permit to replace a patio cover in Las Vegas?

Yes. Clark County and the cities of Las Vegas, Henderson and North Las Vegas all require a building permit for a patio cover installation. City Seamless Patio Covers handles the entire permit process, and you should confirm the rules for your address with your building department.

Does City Seamless remove the old wood patio cover?

Yes. Removal of the old structure, cleanup and installation of the new cover are handled as one project.

Related City Seamless resources

Planning a patio cover? Request a free on-site estimate or Call or Text 725-502-3114.

About City Seamless Patio Covers

Company: City Seamless Patio Covers, family-owned in Las Vegas, with trade roots dating to 1976
Nevada Contractor Licenses: #0081882 and #0082656
Awards: Best of Las Vegas, Las Vegas Review-Journal, 2024 and 2025 (Patio Covers)
Products: Alumawood and Four Seasons Elitewood patio covers: lattice, solid, insulated, combination and freestanding
Permits: Handled by City Seamless, from application through final inspection
Contact: Call or Text 725-502-3114 | cityseamlesspatiocovers.com

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