
Treasure Valley Siding
LP® SmartSide® Siding in the Treasure Valley
LP® SmartSide® engineered wood siding
LP® SmartSide® is engineered wood siding that gives you a warm, genuine wood look with the durability and dimensional stability of a treated, engineered substrate. Instead of solid lumber that checks, splits, and rots, SmartSide® is made from wood strands bound with resins and treated through the board for moisture and termite resistance, then milled with real wood-grain texture. We install the full range — lap, panel, batten, shakes, and trim.
For Treasure Valley homeowners who love the character of cedar but not its upkeep, SmartSide® is the natural middle ground. It carries deep grain and shadow lines that read as real wood from the curb, but it shrugs off the wind, intense sun, and freeze-thaw swings that make solid cedar a maintenance headache here. It's also lighter and easier to work than fiber cement, which can shorten install time on the right project.
Finish is a key decision. LP's ExpertFinish® options arrive pre-finished from the factory in a curated palette with long finish warranties, while primed SmartSide® lets you field-paint any custom color. We'll walk you through both so you can balance custom-color freedom against the longevity and convenience of a baked-on finish.
SmartSide® suits mountain-modern and craftsman homes around Eagle, Star, and the Boise bench where owners want real texture and warmth. It's an engineered wood product, so it does need its cut edges sealed and its finish maintained on a cycle, and we'll be honest about that compared to the lower-maintenance mineral option of fiber cement.
What's included
- LP® SmartSide® lap siding
- Panel & batten profiles
- Shakes & shingles
- ExpertFinish® pre-finished
- Treated engineered-wood substrate
Our process
How we handle lp® smartside® siding
- 01
Profile & finish selection
We help you choose between LP® SmartSide® lap, panel, batten, and shake profiles and ExpertFinish® pre-finished colors versus primed-for-paint, then measure for an accurate quote.
- 02
Tear-off & substrate check
Old siding comes off and we inspect and repair the wall behind it — sheathing, framing, and trim — before any new material goes up.
- 03
Barrier & flashing
A weather-resistive barrier is installed and lapped, with flashing integrated at windows, doors, and penetrations so the wall drains and dries.
- 04
SmartSide® install to spec
SmartSide® is fastened per LP's published installation instructions, with the correct clearances, gaps, and cut-edge treatment that keep the substrate protected and the warranty intact.
- 05
Trim, seal & finish
We integrate trim, seal joints and cut edges, finish the details, and on field-painted jobs coordinate the topcoat — then clean the site.
- 06
Final walkthrough
We do a magnetic nail sweep and walk the finished elevation with you, confirming the details before we close out the job.
In the Treasure Valley
Built for local homes & weather
The engineered-wood look is popular on Idaho mountain-modern and craftsman homes around Eagle, Star, and the Boise bench, where owners want real cedar-like texture without cedar's splitting and constant upkeep in our dry, sun-heavy climate. SmartSide®'s treated substrate is what makes that warmth practical here.
Newer subdivisions in those areas often sit under HOA architectural review covering siding color and profile. ExpertFinish®'s curated palette and SmartSide®'s profile range generally make committee approval straightforward, and we'll help assemble the submittal.
A full re-side typically requires a permit across the valley, and re-cladding can trigger current weather-barrier energy-code details depending on scope. We coordinate the permit so the work is inspected and documented for resale.
LP® SmartSide® Siding FAQs
Is LP® SmartSide® real wood?
It's engineered wood — wood strands bound with resins and treated through the board for moisture and termite resistance, then milled with real wood-grain texture. It delivers the wood look with far better durability and dimensional stability than solid boards.
How does SmartSide® compare to fiber cement?
SmartSide® is lighter, easier to work, and has a warmer, deeper wood grain; fiber cement is denser, non-combustible, and lower-maintenance over the long haul. Both perform well in our climate. The honest split is grain-and-workability versus mineral durability and fire resistance — we'll lay out the trade-offs for your home.
Does it need repainting?
Pre-finished ExpertFinish® options carry long finish warranties and resist fade well; primed-for-paint SmartSide® will need repainting on the normal exterior cycle, which our sun can shorten. Either way, keeping the finish and cut edges intact is what gives the substrate its long life.
Will SmartSide® rot in our weather?
It's treated through the board to resist moisture and termites, and with proper flashing, a weather barrier, and sealed cut edges it holds up well to Idaho conditions. As with any engineered wood, the key is keeping water out at penetrations and keeping the finish sound — both of which our install details address.
Can I get a custom color?
Yes. ExpertFinish® comes in a curated factory palette with the longest finish life; if you want a custom color, we install primed SmartSide® and field-paint it. The trade-off is custom freedom versus baked-on durability, and we'll help you decide.
What drives the cost?
Profile, finish (ExpertFinish® versus field paint), square footage, access and stories, the trim package, and any substrate repair found at tear-off are the main factors. We quote after seeing the home.
What makes LP® SmartSide® different from real wood siding?
LP® SmartSide® is engineered treated-wood strand product, not solid lumber, made from wood strands bonded with resins and treated through the SmartGuard process for moisture and termite resistance. That gives you a real wood look and easy workability without the knots, splitting, and rot risk of natural cedar. It's lighter and faster to cut than fiber cement, which helps on tall valley gables.
How does LP® SmartSide® hold up in Idaho's dry heat and freeze-thaw?
The treated strand and factory primer handle our UV, temperature swings, and freeze-thaw well when the boards are kept off the ground, properly flashed, and painted on schedule. The treatment resists fungal decay and insects, which addresses the main failure mode of older wood siding here. Keeping the bottom edges sealed and clear of dirt and sprinkler spray is the key maintenance point.
What drives the price of an LP® SmartSide® job?
Cost tracks wall area, stories, tear-off of the old siding, and the trim and corner detail you choose, plus whether you go with pre-finished or primed-and-site-painted board. SmartSide's lighter weight can make labor on tall walls a bit more efficient than fiber cement, but sheathing repair behind the old siding is the wild card. We confirm the number with a free on-site look.
Is Iron Crest an authorized LP® SmartSide® installer?
We're an independent contractor with manufacturer-trained installers who install LP® SmartSide® to LP's published specifications; we don't claim authorized, certified, or preferred status with LP. Following LP's nailing, gap, and finishing schedule is what protects the product warranty. Our own 3-year workmanship warranty covers the installation.
How does LP® SmartSide® compare to fiber cement for my house?
SmartSide is lighter, cuts cleaner, and is easier to handle, which can speed up work on two-story walls, and it gives a warm wood-grain look. Fiber cement is non-combustible and never rots, but it's heavier and harder on labor. The honest split is wood-look workability and weight versus fiber cement's fireproof, rot-proof ceiling; both perform here when installed right.
Other siding types we install
Explore the rest of our siding materials and services across the Treasure Valley.
Materials

Fiber Cement Siding
Durable, fire- and rot-resistant fiber cement siding built for Idaho's freeze-thaw swings.
Learn more →
Engineered Wood Siding
Engineered wood siding combining a real-wood appearance with better moisture and impact resistance.
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Vinyl Siding
Low-maintenance, budget-friendly vinyl siding in a wide range of colors and profiles.
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Steel & Metal Siding
Tough steel and metal siding for a modern look with serious weather and impact resistance.
Learn more →Brands We Install
Repair & Specialty

Siding Repair
Targeted siding repair — cracked boards, storm damage, and failed sections fixed and color-matched.
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Dry Rot & Water Damage Repair
Find and fix the rot behind failing siding — damaged sheathing, trim, and substrate restored.
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Siding Replacement & Re-Side
Full tear-off and re-side — swap tired or failing siding for a tight, modern, weather-ready exterior.
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Storm & Hail Damage Siding
Wind- and hail-damaged siding assessed, documented, and restored after Treasure Valley storms.
Learn more →Commercial & Multifamily

Commercial Siding
Siding and exterior cladding for offices, retail, and light-commercial buildings across the valley.
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Multifamily & HOA Siding
Siding for apartments, condos, townhomes, and HOA communities — consistent, code-right, on schedule.
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New Construction Siding
Siding for builders and GCs — accurate, on-schedule installation on new Treasure Valley homes.
Learn more →Helpful guides
Plain, local guidance to research lp® smartside® siding before you commit.
Sources & references
How we back what we say
Our recommendations follow building code, manufacturer specifications, and federal efficiency standards — not sales scripts. These are the primary sources behind the guidance on this page.
- Siding Products & Installation ResourcesJames Hardie
Manufacturer product data and published installation specifications for fiber cement siding, including the HardieZone climate-based product system.
- LP SmartSide Engineered Wood SidingLP Building Solutions
Manufacturer product line and installation instructions for engineered wood siding and trim.
- Energy Saver: SidingU.S. Department of Energy
Background on the wall assembly behind siding — insulation, drainage planes, and moisture control.
- Renovation, Repair and Painting (RRP) RuleU.S. Environmental Protection Agency
Federal lead-safe work practices required when disturbing painted surfaces on homes built before 1978 — relevant to siding tear-offs and window/door replacement on older Treasure Valley homes.
- Idaho Contractor RegistrationIdaho Division of Building Safety
Idaho's contractor registration program (RCE numbers). You can verify any Idaho contractor's registration status here.
- International Residential Code (IRC)International Code Council
The model residential building code Idaho jurisdictions adopt — governs weather-resistive barriers, flashing, fastening, and egress that exterior work must meet.
- Energy Saver: WeatherizeU.S. Department of Energy
DOE guidance on air sealing and the building envelope — the principles behind proper flashing, weather barriers, and sealing.
Need lp® smartside® siding done right?
Tell us about your siding, window, or door project — we'll come take a look and give you a straight, free estimate.

