Deck questions, answered for Meridian

Most Treasure Valley decks come in between $8,000 and $45,000. A small pressure treated deck close to the ground with a simple rail sits at the bottom of that band. A family-sized composite deck with a mid grade rail system sits in the upper half of it. A covered outdoor room on a larger Eagle or Star lot can run past $80,000.

Installed, complete with framing and footings, pressure treated pine runs about $32 to $48 per square foot in this valley, western red cedar $42 to $66, capped composite $55 to $88, and capped PVC $66 to $105. Rail and stairs are priced on top of those figures, not inside them.

Because it is a structural assembly rather than trim. A guard is a lever: the push arrives at the top and the connection holding it is down in the framing, so the force that has to be held at the bottom is a multiple of the force that caused it. Answering that takes tension hardware and blocking, and none of it is visible afterwards. Wood rail runs $45 to $80 per linear foot installed, composite $75 to $130, aluminum $80 to $140, cable $110 to $190, and glass panel $180 to $300. On a small deck the rail can be a third of the budget.

Outdoor living space is a normal expectation in newer Treasure Valley housing, and a back yard with nothing in it reads as unfinished to buyers walking through. What nobody can honestly give you is a percentage, because resale return varies by neighborhood, price band, and what the rest of the yard looks like. A local agent who works your subdivision is a better source for that number than anyone in construction.

At grade on flat ground, a paver patio is usually cheaper per square foot and needs less maintenance. A deck wins wherever the ground falls away from the house, where the door sits well above grade, or where a patio would need a retaining wall to sit level. In flat Meridian subdivisions the honest answer is often that a patio is the more economical choice.

Most established builders work with one or more third party home improvement lenders, and many homeowners use a HELOC instead. Terms come from the lender, not the contractor, so compare the rate and the fee schedule the same way you would for any other loan. A quote should never depend on you taking the builder finance option.

The height of the walking surface above the ground beneath it. Once leaving the edge would be a fall rather than a step, a guard becomes necessary; below that it is a design choice. On flat Meridian ground a deck stepped down from the door can often stay on the free side of that line, which removes a large cost and opens the view from the kitchen window.

A tension tie between the bottom of the post and the framing, with blocking behind it to spread the load. The post is a lever, so the pull at its base is larger than the push at the rail, and screws driven into the face of a rim joist resist that only by being pulled straight out of the wood. Withdrawal is the weakest thing you can ask of a fastener, and this is the single most common weak point on decks built in the early 2000s.

A flight does. A single step down to the lawn does not, which is one reason low decks are so often built with a short step rather than a run. Where there is a handrail, its shape is the point: graspable rather than a flat board on top of the posts, continuous the whole length of the flight, and returned into the guard at each end so a sleeve cannot hook on the end of it.

Two things, and the deeper of them wins. The base has to sit below the ground that freezes and thaws each winter, and it has to land on undisturbed soil rather than on fill placed while the house was being built. Which of those governs is not predictable from the surface, so it is settled in the open hole. Once concrete is in, nobody can see either one again.

Substantially. An open deck is loaded by whatever walks on it, and that load goes home in the evening. A roof loads the posts permanently with its own weight, seasonally with snow, and intermittently with wind trying to lift it off. Uplift is the surprising one, because it works in the opposite direction to everything else, so the connections have to hold the roof down as well as up. Deck footings sized for people are not sized for any of that.

Homeowners can and do, and the American Wood Council publishes a free prescriptive deck guide that covers most residential framing. The parts people underestimate are the ledger connection, the footing depth, and the guard post anchoring, which are precisely the three details that fail on owner-built decks.

Composite costs 40 to 70 percent more installed and does not need re-coating. Wood costs less up front and wants a clean and re-coat every two to four years in this climate. In a long dry high desert summer, the maintenance argument for composite lands harder here than it does in a milder, shadier climate. If the deck is a five year fix before selling, wood is fine. If it is a twenty year feature, composite usually wins on total cost.

Dark boards in full afternoon sun on a 95 degree July day get uncomfortable barefoot, and so does dark wood. Lighter grays and tans run noticeably cooler, and some PVC boards are engineered for lower heat gain than standard capped composite. In a west facing yard, either pick a light color or plan for shade.

It needs more support beneath it. A composite board is less stiff than timber across a gap and it creeps under sustained load in a way wood does not, so the joists sit closer together, and closer again under a diagonal layout. Each manufacturer publishes what its own product needs and that document governs. It is also why an old frame built for thick wood decking rarely takes composite as a straight swap.

Every two to four years for most Treasure Valley decks. South and west facing surfaces without shade sit at the short end. Sprinkle water on the boards, and if it soaks in rather than beading, the finish has stopped working.

Usually not. Freshly treated lumber often arrives wet from the treatment process and will not take a penetrating finish until it dries down, which in a Meridian summer can be a few weeks. Kiln dried after treatment lumber is the exception. Staining too early is one of the more common reasons a first coat fails inside a season.

Ultraviolet light breaks down lignin, the compound that binds wood fibers, and the surface layer degrades to gray. A long clear high desert summer delivers a heavy annual dose. Gray on its own is cosmetic, but it arrives with surface checking that lets water in, and water is what leads to rot. Pigmented semi-transparent stains block far more ultraviolet than clear sealers.

Very little of it is the building. Concrete under the footings has to reach strength before anything stands on it, so part of the calendar is a hold. An architectural committee meets when it meets. A special order color or rail system has to be made and shipped. And the valley season fills from the front, so where you land in the queue is decided by when you started the conversation, not by how big the deck is.

Late March through October is the working season, and the calendar fills from the front. May and June book out furthest. September and October are the quietest good weather weeks and often the easiest slots to get. Winter is a fine time to design, get committee approval, and order.

Some builders do. Digging and pouring footings gets difficult once the ground is frozen, and concrete placed in cold weather needs protection, so most crews pause the ground work and keep going on covered or above-grade scopes. A December inquiry is usually a March build.

Most Meridian subdivisions have an architectural committee, and the city's own accessory structure handout tells homeowners to verify their association requirements before building. Committees meet on their own schedule, so a review can take a couple of weeks and it is worth starting early rather than once the design is locked.

Not quite. Meridian subdivision lots carry recorded easements: a strip along the rear boundary, narrower ones down the sides, and a wider one on the street side of a corner lot. A structure standing in one can be required to move at the owner expense if a utility needs access. The recorded plat for your lot is the document that settles where those strips fall, and it is worth reading before the first sketch rather than after.

Through a ledger, a board bolted to the house framing that carries one edge of the deck. It is the most safety-critical connection in the whole structure, and it fails through water rather than load: if it is not flashed properly the wall behind it rots quietly for years. Where the wall construction is unknown, which happens on Old Town Meridian houses and on older stock around Nampa and Boise, the right answer is often a freestanding deck that carries its own weight and never touches the house at all.

the deck builder working your part of the valley picks the project up and calls you, usually the same business day. They set a time to measure the yard, then follow up with a written price. Nothing is committed until you sign something.