From James Hardie fiber cement to LP SmartSide engineered wood — we handle material selection, weather barrier installation, and precision siding application from foundation to soffit.
Siding installation in New Plymouth, Idaho is an envelope-protection decision driven by an intense high-desert climate acting on a housing stock built largely in old wood siding. New Plymouth was platted in 1896 as an irrigation colony — the Plymouth Society of Chicago and William E. Smythe arranging a horseshoe of two streets around a mile-long Boulevard park. The homes ringing that horseshoe and dotting the surrounding farm acreage are predominantly wood-clad: colony-era farmhouses in original lap and shiplap, mid-century ranches in aged wood or early manufactured siding, and a modest minority of newer fiber-cement builds. At roughly 2,257 feet of elevation in an open river valley, these exteriors face punishing UV, freeze-thaw cycling, wind-driven grit off surrounding farm ground, and irrigation-related moisture loading at grade. With a 2020 Census population of 1,494 in a community where homes are kept for generations, siding replacement here is structural envelope work, not a cosmetic refresh — and on the pre-1978 majority, removing old siding triggers EPA RRP lead-safe requirements. Iron Crest Remodel (Iron Crest Remodeling Group LLC, Idaho RCE-6681702) approaches New Plymouth siding with attention to substrate condition behind the cladding, the valley's specific weather loads, and the lead-safe and code realities this stock carries.
Protect your home and transform its curb appeal with professionally installed siding built for Idaho weather.
Siding is your home's first line of defense against wind, rain, snow, UV exposure, and temperature extremes — and in the Treasure Valley, those conditions are intense. Boise homes experience summer temperatures exceeding 100 degrees, winter lows well below freezing, rapid temperature swings of 40-50 degrees in a single day, and occasional wind-driven rain and hail. Professional siding installation includes removal of old siding, inspection and repair of the underlying sheathing and framing, installation of a code-compliant weather-resistive barrier (house wrap), proper window and door flashing, precision siding application with manufacturer-specified fastening and gapping, trim and corner finishing, and caulking. The three dominant siding materials in the Boise market — James Hardie fiber cement, LP SmartSide engineered wood, and vinyl — each offer distinct performance characteristics, aesthetics, and price points that should be matched to the homeowner's priorities.
New Plymouth homeowners pursue siding installation for a variety of reasons. Here are the most common situations we see:
Not every siding project is the same. Here are the most common project types we complete in New Plymouth:
Installation of HardiePlank lap siding, HardieShingle, or HardiePanel vertical siding. Fiber cement is non-combustible, rot-proof, termite-proof, and available in ColorPlus factory-finished colors with a 15-year color warranty.
Installation of LP SmartSide treated engineered wood siding in lap, panel, or shake profiles. Offers authentic wood grain texture, impact resistance, and a 5/50 year limited warranty. Lighter weight and easier to cut than fiber cement.
Installation of insulated or standard vinyl siding. The most budget-friendly option with zero painting maintenance. Modern vinyl comes in a wide range of styles and colors including board-and-batten and shake profiles.
Replace siding on damaged sections, additions, or specific elevations while matching the existing siding profile and color. Includes weather barrier repair and flashing integration.
Complete siding replacement with coordinated trim — fascia, soffits, corner boards, window and door surrounds, and frieze boards. Creates a fully unified exterior appearance.
New Plymouth's housing is older and more layered than the suburban Treasure Valley: a 1896 colony-era and pre-1940 farmhouse core, a deep 1950s–1970s ranch layer, and a modest post-2000 subdivision minority. Most homes sit over vented crawlspaces.
Original colony and early-twentieth-century farmhouses around The Boulevard. Plaster-and-lath interiors, original wood siding and single-pane sash, galvanized supply lines, undersized electrical service, and crawlspace subfloors. Pre-1978 lead-paint and pre-1980 asbestos handling required.
Ranches and ramblers built as irrigated agriculture matured. Sound framing, aging copper plumbing, marginal panels, single-pane or early aluminum windows, thin insulation, and closed floor plans. Pre-1978/1980 environmental rules still apply.
Post-2000 builds such as Harvest Creek. Modern PEX plumbing, adequate electrical, and builder-grade finishes on tighter lots. No environmental-testing requirements.
Material selection affects the look, durability, and cost of your siding. Here are the most popular options we install in New Plymouth:
The gold standard in fiber cement siding. Made from cement, sand, and cellulose fibers. Non-combustible, rot-proof, termite-proof, and dimensionally stable. ColorPlus factory-applied finish provides superior color consistency and a 15-year color warranty.
Best for: Homeowners who want maximum durability, fire resistance, and long-term value
Treated engineered wood siding with authentic wood grain texture. Made from wood strands bonded with resins and treated with SmartGuard process for moisture, fungal, and termite resistance. Lighter than fiber cement and easier to install.
Best for: Homeowners who want wood-grain appearance with engineered durability and lower cost than fiber cement
PVC-based siding that requires no painting, does not rot, and is immune to insect damage. Modern vinyl comes in many styles and colors with improved fade resistance. Insulated vinyl adds R-value and rigidity.
Best for: Budget-conscious projects, rental properties, and homeowners who want zero exterior painting maintenance
Tyvek, Henry Blueskin, or equivalent moisture barrier that wraps the exterior sheathing. Allows interior moisture to escape while blocking exterior water and wind. Critical component of a proper siding installation.
Best for: Required component beneath all siding installations for moisture and air management
Rot-proof trim boards for window surrounds, corner boards, fascia, and decorative elements. PVC (Azek, Versatex) and fiber cement trim will not rot, warp, or require replacement due to moisture damage.
Best for: All exterior trim applications — especially in areas prone to moisture exposure
Here is how a typical siding project works from first contact to final walkthrough:
We inspect your existing siding, sheathing, flashing, and trim. We identify areas of damage, moisture intrusion, rot, and insulation deficiencies. We discuss material options, styles, and colors, and provide a detailed written estimate.
You select your siding material (fiber cement, engineered wood, or vinyl), profile style, color, and trim details. We create an exterior design plan showing siding layout, trim placement, and color coordination with your roof, windows, and other fixed elements.
We pull any required building permits and order siding, trim, weather barrier, flashing, and fasteners. Lead times for factory-finished James Hardie products can run 4-8 weeks; LP SmartSide and vinyl are typically faster.
Existing siding is carefully removed and disposed of. We inspect the underlying sheathing, framing, and insulation for damage, rot, pest activity, and moisture issues. Any damaged sheathing or framing is repaired before new siding goes on.
A code-compliant weather-resistive barrier (house wrap) is installed over the sheathing. All windows, doors, penetrations, and transitions receive proper flashing with manufacturer-approved materials and techniques to prevent water intrusion.
Siding is installed from the bottom up with manufacturer-specified fastening, gapping, and overlap. Corner boards, window and door trim, frieze boards, and soffit panels are installed. All cuts, joints, and transitions are sealed and finished.
All joints, penetrations, and trim connections are caulked with premium exterior sealant. Touch-up paint is applied where needed. A final walkthrough verifies installation quality, flashing integrity, and overall appearance.
Here is what to expect for project duration when planning a siding in New Plymouth:
| Phase | Duration | Details |
|---|---|---|
| Assessment and Material Selection | 1–2 weeks | Exterior inspection, material consultation, color selection, and detailed estimate. Factory-finished color samples are available for review. |
| Material Ordering and Permitting | 2–6 weeks | Material ordering (factory-finished James Hardie can take 4-8 weeks), permit application and approval, and trade scheduling. |
| Old Siding Removal and Sheathing Repair | 2–5 days | Removal and disposal of existing siding, inspection and repair of sheathing and framing, and preparation for weather barrier installation. |
| Weather Barrier and Flashing | 1–2 days | House wrap installation, window and door flashing, and sealing of all penetrations and transitions. |
| Siding and Trim Installation | 5–12 days | Siding installation from foundation to soffit, trim and corner board installation, and detail finishing. Duration depends on home size, material, and architectural complexity. |
| Caulking, Touch-Up, and Inspection | 1–2 days | Final caulking, touch-up painting, cleanup, and walkthrough inspection with the homeowner. |
New Plymouth range: $14,000–$28,000 – $70,000–$160,000
Most New Plymouth projects: $28,000–$60,000
New Plymouth siding costs are governed by substrate condition behind the old cladding, lead-safe requirements, and material choice rather than by local labor rates. The low range covers a smaller home with sound sheathing receiving a straightforward re-side in mid-grade material. The high range covers a large colony-era farmhouse or substantial rural home with extensive sheathing and framing repair, full lead-safe removal of old wood siding, premium fiber-cement or specialty cladding, and detailed trim. The average band reflects the typical New Plymouth job: a wood-sided mid-century or older home re-clad in fiber cement with house wrap and flashing correction, including the sheathing repair and lead-safe removal these homes routinely require. The dominant local cost drivers are concealed sheathing and framing rot discovered at tear-off (the single largest variable), mandatory EPA RRP lead-safe removal and disposal on pre-1978 homes, and the wall-assembly upgrades — weather-resistive barrier, flashing, insulation — that bring an old colony or ranch envelope up to real performance. We build a discovery contingency into pre-1980 siding estimates because removing century-old cladding reliably reveals substrate conditions that must be repaired before new siding goes on.
The final cost of your siding in New Plymouth depends on several factors. Here are the biggest cost drivers:
The material choice is the largest cost variable. Vinyl is the least expensive at $5-10/sq ft installed, LP SmartSide is mid-range at $8-13/sq ft, and James Hardie fiber cement is the premium option at $10-16/sq ft installed.
The total square footage of siding surface — determined by the home's footprint, number of stories, and architectural complexity — is the primary quantity driver. A two-story home has significantly more surface area than a single-story.
Removing existing siding, especially multiple layers or materials with asbestos content in older homes, adds labor and disposal costs. Single-layer vinyl removal is fast; multi-layer or cement-asbestos removal is slower and more costly.
Damaged or rotted sheathing and framing discovered after old siding removal must be repaired before new siding goes on. The extent of hidden damage is often unknown until the old siding comes off.
Homes with many windows, doors, corners, gables, and decorative trim elements require more cutting, fitting, and finish work. Simpler facades with fewer interruptions install faster and cost less.
Proper flashing around every window, door, and penetration is essential for preventing water intrusion. The number and size of openings directly affects flashing material and labor costs.
These are the real-world projects we see most often from New Plymouth homeowners:
The signature New Plymouth siding project: a pre-1940 wood-sided farmhouse with checked, split, and rotting original lap siding, lead-based coatings, and likely concealed sheathing damage. Scope is lead-safe removal under EPA RRP containment, full inspection and repair of sheathing and framing, corrected weather-resistive barrier and flashing, continuous insulation where feasible, and new cladding — fiber cement detailed to honor the farmhouse's profile, or restored wood where preservation is the priority on the protected Boulevard. The character of the home guides the cladding choice; the durability comes from the corrected wall assembly beneath it.
New Plymouth's 1950s–1970s ranches in failing wood or early manufactured siding are the most common re-side candidates. Scope is lead-safe removal on pre-1978 homes, sheathing repair, house wrap and flashing correction, added insulation where the assembly allows, and fiber-cement cladding that ends the repaint-and-rot maintenance cycle these homes otherwise demand under valley sun. A durable, low-maintenance envelope upgrade with strong performance return.
A recurring New Plymouth reality: a re-side that becomes a substrate repair once the old cladding is removed and reveals rotted sheathing and framing from years of water intrusion at failed laps, penetrations, and grade. Scope expands to structural and sheathing repair, moisture-source correction, and proper flashing before new siding. This is common enough in old wood-sided New Plymouth homes that it is planned for with contingency, not treated as a surprise.
New Plymouth's south and west elevations fail years ahead of protected sides under full valley sun. Where the failure is confined to those elevations and the others are sound, scope concentrates re-siding and substrate repair on the failed walls, blending material and color across the home for uniformity. A cost-effective, locally specific approach when whole-house replacement is not yet warranted.
Post-2000 Harvest Creek and similar homes — typically original fiber-cement or manufactured siding — occasionally need targeted replacement of damaged sections, failed caulk and flashing correction, or a full re-clad as the builder material ages. No lead, minimal substrate surprises, predictable scope. The local value is correcting flashing and weather-barrier detail to the valley's wind-driven moisture exposure.
Solution: We remove old siding, repair damaged sheathing and framing, install a proper weather-resistive barrier with correct lapping and sealing, and flash all openings to create a watertight exterior shell.
Solution: We replace failed siding with modern materials rated for Idaho's UV and temperature extremes. Fiber cement and engineered wood hold their color and shape far longer than older vinyl or untreated wood.
Solution: We install siding with manufacturer-specified gapping, use backer rod and premium caulk at all joints and penetrations, and ensure every seam and transition is properly sealed.
Solution: We replace damaged sections and install fiber cement or other pest-resistant materials. James Hardie siding is immune to woodpecker damage, termites, and rot.
Solution: Many older Treasure Valley homes have siding installed directly over sheathing without house wrap or proper flashing. Our complete re-side includes a full weather barrier and flashing system as a standard component.
High-desert Payette River valley at ~2,257 ft: hot, dry, sun-intense summers and cold winters with real snow load and a 24-inch frost line, plus wind off open agricultural ground and hard water.
Payette County design criterion of 30 psf governs roof and deck structural design.
24-inch frost depth requires foundations, footings, and deck piers below grade to prevent frost heave.
115 mph ultimate wind speed and Seismic Design Category C; wind off open farmland drives infiltration and uplift on exposed structures.
Open-valley sun degrades wood siding, coatings, and decking; wide hot-to-cold swing drives material movement and air leakage.
Hard municipal and private-well water scales glass and fixtures and degrades grout and stone; drives material/glass selection.
The 1896 colony heart: two horseshoe streets around the mile-long Boulevard park with original irrigation ditches. Predominantly colony-era and pre-1940 wood-sided farmhouses on generous original acre tracts; strong period character and a protected streetscape.
Common projects in The Boulevard / Historic Horseshoe Core:
Grid streets around and behind the horseshoe filled with 1950s–1970s ranches and ramblers built as the irrigated farm economy matured. Sound framing, aging copper and marginal panels, closed floor plans, on municipal water and sewer.
Common projects in Mid-Century Ranch Streets (In-Town):
Working farm and ranch acreage surrounding the town, outside city limits and under Payette County jurisdiction. Homes range from century-old farmsteads to modern custom builds, typically on private wells and septic systems.
Common projects in Agricultural Fringe / Rural Acreage:
Post-2000 subdivision pockets representing New Plymouth's modern housing minority. Modern PEX plumbing, adequate panels, and builder-grade finishes on tighter lots; no environmental-testing requirements.
Common projects in Harvest Creek / Newer Subdivisions:
Every New Plymouth neighborhood has different housing stock, homeowner priorities, and project considerations. Here is what siding looks like in each area:
Permit authority: City of New Plymouth (building inspection contracted to the City of Fruitland Building Department) for properties inside city limits; Payette County Building Department for unincorporated rural parcels. Plumbing and electrical permits issued separately by the State of Idaho (Division of Building Safety / DOPL).
Online portal: npidaho.com/building-department
Here are the design trends we see most often in New Plymouth siding projects:
New Plymouth and Payette County home values have appreciated well above their historic norms; local market median list prices reached roughly $485,000 with an average around $449,000 in early 2026 (Redfin), against a longer-run median home value near $277,500. Inventory is limited in a small market with homes selling in roughly 70 days. With trading up locally often impractical, long-tenure, multi-generational families predominantly renovate to keep — making durable, do-it-once work the local standard and a strong resale signal in a closely-watched market.
Avoid these common pitfalls New Plymouth homeowners encounter with siding projects:
Better approach: Old wood siding in New Plymouth frequently conceals sheathing and framing rot revealed only at tear-off. Scope pre-1980 re-sides with a substrate-repair contingency and inspect thoroughly once the cladding is off. Treating concealed damage as a surprise rather than a planned-for likelihood is how these projects blow up.
Better approach: Most older New Plymouth exteriors have lead coatings, and uncontrolled removal contaminates soil and air illegally. Lead-safe siding removal requires ground containment, controlled removal, HEPA practices, and compliant disposal — mandatory federal practice on pre-1978 homes that must be in the scope.
Better approach: New cladding over a marginal or damaged house wrap and bad flashing fails the same way the old siding did. Re-siding is the one chance to correct the weather-resistive barrier and flashing for the valley's wind-driven and irrigation-related moisture. Skipping this wastes the entire re-clad investment.
Better approach: Outside genuine Boulevard preservation cases, replacing failed wood with new wood recommits the homeowner to a relentless repaint-and-rot cycle under valley UV. Fiber cement ends that cycle with far greater durability. Match the cladding to the home's context and long-term cost, not just to what was there before.
Better approach: Old colony and ranch walls have little continuous insulation. Re-siding exposes the assembly, making added exterior insulation and barrier correction far cheaper now than later. Forgoing it means paying twice to open the same wall for performance the climate makes worthwhile.
On older wood-sided homes, frequently yes. By the time New Plymouth wood siding fails visibly under the valley's UV and freeze-thaw, water intrusion at failed laps, penetrations, and grade has often rotted the sheathing and framing behind it — discovered only when the old cladding comes off. We scope re-siding on pre-1980 homes with a substrate-repair contingency rather than as a clean cladding swap, because concealed damage is common enough here to plan for, not be surprised by. Correcting it before new siding goes on is what makes the new envelope durable.
Yes. Most pre-1978 New Plymouth homes — the Boulevard core and many ranches — have lead-based exterior coatings, and removing that siding falls under the EPA RRP rule with stringent exterior requirements: ground containment, controlled removal, HEPA practices, and compliant disposal to prevent soil contamination. We perform lead-safe-compliant siding removal as standard practice on pre-1978 homes. Uncontrolled DIY removal on these homes is illegal and an environmental and health hazard.
For most New Plymouth homes, fiber cement is the durable answer. It is dimensionally stable through the valley's wide thermal swing, highly UV- and rot-resistant, fire-resistant — relevant in an agricultural setting — and ends the relentless repaint-and-rot maintenance cycle that old wood siding demands under this sun. Profiles can be specified to respect colony and ranch character. On the protected Boulevard, restored or matching wood siding may be the right preservation choice; we match the cladding to the home and its context.
New Plymouth's open valley setting at elevation delivers intense UV, and south and west elevations take it for the full day with little tree cover on most properties. UV degrades wood siding and its coatings, so those elevations check, split, and fail years ahead of the protected north and east sides. Where the failure is confined to those walls, we can concentrate re-siding and substrate repair there and blend material and color across the home — a cost-effective, locally specific approach.
Yes — it is the most cost-effective time. Original colony and mid-century New Plymouth wall assemblies have little or no continuous insulation and marginal weather barriers. Re-siding exposes the wall, making it the one practical opportunity to add continuous exterior insulation and correct the house wrap and flashing for real performance in the valley's hot summers and cold winters. Doing it at re-clad rather than later avoids paying twice to open the wall.
James Hardie fiber cement siding is the top choice for durability, fire resistance, and long-term value in the Boise climate. LP SmartSide offers similar performance at a lower cost with a more wood-like texture. Vinyl is the most budget-friendly but offers less impact resistance and aesthetic quality.
James Hardie fiber cement siding lasts 40-50+ years. LP SmartSide engineered wood lasts 30-40 years. Quality vinyl siding lasts 20-30 years. Factory-applied color finishes on fiber cement and engineered wood extend the interval between repainting.
In most Treasure Valley jurisdictions, full siding replacement requires a building permit — especially if the project involves sheathing repair or weather barrier installation. We handle all permit applications and inspections.
Full siding replacement for a typical single-story home in the Boise area runs $12,000-25,000 for vinyl, $18,000-35,000 for LP SmartSide, and $22,000-45,000+ for James Hardie fiber cement. Costs depend on home size, material, trim scope, and repair needs.
In some cases, new siding can be installed over existing siding — but we generally recommend removing old siding so we can inspect and repair the sheathing, install a proper weather barrier, and ensure a flat, secure substrate for the new material.
A typical full re-side of a single-story home takes 2-3 weeks of on-site work. Two-story homes and complex projects take 3-4 weeks. Material lead times (especially factory-finished colors) add 2-6 weeks before construction starts.
For most Boise homeowners, yes. Hardie siding offers superior fire resistance, impact resistance, color retention, and lifespan compared to alternatives. The higher upfront cost is offset by lower maintenance, fewer repairs, and longer intervals between repainting.
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