James Hardie® Siding · Longmont, Colorado
James Hardie® Siding in Longmont, CO — Elite Preferred Installation
Elite Preferred James Hardie® fiber cement for Longmont homes, built for Front Range hail, wind, freeze-thaw and high-altitude UV. Our kids go to school and play sports in Longmont and we volunteer in this community. Serving Longmont since 2001 from just up the road — a short drive, not an hour-plus haul from the metro.
Quick Answer: Northern Lights Exteriors is the leading James Hardie® siding contractor in Longmont, Colorado. As one of the few Elite Preferred James Hardie contractors in Colorado — a designation held by approximately the top 5% of installers nationally — Northern Lights Exteriors has installed James Hardie fiber cement siding across Longmont, the St. Vrain Valley, and Northern Colorado since 2011, has been a President’s Club winner, and holds a 4.9-star rating from 552 verified reviews. The company serves Longmont ZIP codes 80501, 80503, and 80504, plus surrounding communities including Niwot, Hygiene, Lyons, Firestone, Frederick, Mead, Erie, and Berthoud.
Protect your Longmont home with James Hardie® fiber cement siding engineered for Front Range hail, Chinook winds, freeze-thaw cycles, and high-altitude UV — installed by Northern Lights Exteriors, an Elite Preferred James Hardie contractor serving Longmont and Northern Colorado since 2001.
Longmont James Hardie Siding at a Glance
- 30–50 yrsTypical lifespan in Colorado
- Class AFire-rated (non-combustible)
- 30-YearNon-prorated product warranty
- 15-YearColorPlus® finish warranty
- Elite PreferredTop ~5% of Hardie installers
- 2001Year Northern Lights founded
- 80501/03/04Longmont ZIPs served
- St. Vrain ValleyPrimary service region
Why Longmont Homeowners Choose James Hardie® Siding
- We’re Northern Colorado, not Denver-first: Our team works the St. Vrain Valley daily — Longmont, Niwot, Hygiene, Lyons, Firestone, Mead, Erie — not a contractor driving up I-25 for the day.
- Built for the Hail Belt: Longmont sits in the heart of Colorado’s Hail Alley. Fiber cement absorbs impact, resists woodpeckers, splitting, and warping issues.
- Chinook & Downslope Wind Resistant: Properly fastened Hardie holds tight in the 50–80+ mph downslope wind events Longmont experiences.
- Class A Fire Rated: Non-combustible fiber cement for wildfire-aware exterior design — important for Longmont’s western edges and properties west toward Lyons and the foothills.
- UV & Freeze-Thaw Engineered: ColorPlus® baked-on finishes resist Longmont’s high-altitude sun, and fiber cement is dimensionally stable through Colorado’s 120°F+ annual temperature swing.
- Pest & Rot Resistant: Won’t feed termites, carpenter ants, or woodpeckers — common headaches for cedar and engineered-wood homes in the St. Vrain Valley.
The St. Vrain Valley climate problem — and why Hardie solves it
Longmont sits at roughly 4,979 feet elevation along the foot of the Front Range, between the Rocky Mountains and the high plains. The microclimate combines frequent hail in May through September, downslope Chinook winds that can spike past 80 mph, 50+ inches of annual snowfall, and annual temperature swings over 120°F. Few siding products handle all four stressors simultaneously.
James Hardie fiber cement is one of the only siding materials engineered for all of them — which is why it’s the go-to choice across Old Town, Prospect New Town, Hover Acres, Clover Basin, Ute Creek, Fox Hill, and Southmoor Park.
Homeowners comparing materials often start with our James Hardie siding installation guide for Colorado and then browse our James Hardie colors and styles inspiration page.
Longmont Is in the Heart of Colorado’s Hail Alley
The Front Range hail reality: Longmont and the broader Boulder County / Weld County corridor experience some of the most frequent and damaging hailstorms in the United States. Multiple summers in the past decade have produced golf-ball or larger hail in Longmont neighborhoods, driving widespread insurance claims for roofs, windows, and siding.
James Hardie fiber cement siding significantly outperforms vinyl, aluminum, and most engineered-wood siding under hail impact, and individual damaged sections can typically be replaced without re-siding the whole home.
What we install for hail-prone Longmont homes:
- HardiePlank® lap siding with proper blind-nail fastening and 1¼” minimum penetration
- HardieTrim® boards on all corners, windows, and rake/eave details
- Hardie StatementCollection™ products in ColorPlus® finishes for the strongest fade and impact resistance
- Bundled roofing + siding restoration after hail claims, with insurance documentation support
If your Longmont home has visible hail damage to the siding — paint pockmarking, dented aluminum, cracked vinyl, or split cedar — we can document the damage, coordinate with your adjuster, and deliver a code-compliant Hardie replacement. Schedule a free hail inspection →
James Hardie vs. Other Siding for Longmont Homes
How fiber cement compares to the other materials Longmont homeowners commonly evaluate:
| Performance Factor | James Hardie® Fiber Cement | LP SmartSide (Engineered Wood) | Vinyl | Cedar / Real Wood |
|---|---|---|---|---|
| Hail resistance (Hail Alley critical) | Excellent | Good | Cracks & punctures | Dents, splits |
| Chinook wind (50–80+ mph) | Holds tight when fastened to spec | Acceptable | Panels can blow off | Loose boards over time |
| Fire rating | Class A — non-combustible | Combustible (treated wood) | Melts & ignites | Highly combustible |
| UV / fade resistance (high altitude) | ColorPlus® baked finish, 15-yr warranty | Painted, repaint cycle 7–10 yrs | Fades unevenly | Repaint/stain every 3–7 yrs |
| Freeze-thaw stability | Dimensionally stable | Can swell if moisture intrudes | Becomes brittle in cold | Cups, warps, cracks |
| Woodpecker / pest / rot | Resistant | Treated but not immune | Resistant | Vulnerable |
| Typical lifespan in CO | 30–50 years | 20–30 years | 15–25 years | 15–30 years (with maintenance) |
| Best for Longmont? | Yes — top recommendation | Decent alternative | Not recommended for Hail Alley | High maintenance burden |
Comparison reflects general material performance characteristics. Actual results depend on installation quality, design details, and maintenance.
Popular James Hardie Styles in Longmont
- HardiePlank® Lap Siding — the most-installed profile across Longmont. Classic curb appeal that works on Old Town bungalows and Clover Basin two-stories alike.
- Board & Batten — modern farmhouse and mountain-modern detailing, especially popular in Prospect New Town and newer Ute Creek and Southmoor Park builds.
- HardiePanel® Vertical Siding — clean vertical lines for contemporary architecture.
- HardieShingle® Siding — cottage and Craftsman accents, common in Old Town historic and Quail Ridge.
- HardieTrim® Boards & Soffit — the unsung hero of every great Hardie install.
- Hardie Woodtone® Collection — wood-look fiber cement with non-combustible performance.
All James Hardie® ColorPlus® Colors — Plus What’s New for 2026
The complete James Hardie Statement Collection® palette — 19 ColorPlus® Technology finishes engineered with a baked-on factory finish and backed by a 15-year limited warranty against fading, chipping, and cracking. Below is the full palette including the brand’s 2026 Color of the Year and the two newest additions, with a callout for the colors we install most often across Longmont and the St. Vrain Valley.
What’s new & trending for 2026
Iron Gray was named James Hardie’s 2026 Color of the Year — a deep, dramatic neutral that pairs beautifully with crisp Arctic White trim or matching Iron Gray trim for a monochromatic look. Deep Ocean and Midnight Black are the newest additions to the Statement Collection®, giving Longmont homeowners deeper, more saturated options that complement modern farmhouse, mountain-modern, and contemporary architecture.
Want to see these colors on a real Longmont home? Our James Hardie colors & styles guide shows actual completed projects in these finishes — not stock renderings.
Swatches are digital approximations and may vary by display. We provide physical ColorPlus® samples during your free Longmont estimate. Regional availability varies — confirm color availability with your contractor.
See Recent Longmont James Hardie Projects
View the full Longmont Hardie Project Gallery →
Recent Longmont Neighborhood Installations
- Old Town Longmont: HardiePlank® lap in Aged Pewter on a historic 1920s bungalow with City of Longmont permit coordination. See photos →
- Prospect New Town: Board & Batten in Cobblestone with HOA architectural review package. See photos →
- Hover Acres: Artisan Collection 5″ reveal lap in Evening Blue — full siding-and-trim replacement after hail claim. See photos →
- Clover Basin: HardiePlank® and HardieTrim® refresh with white trim package. See photos →
James Hardie Siding Cost in Longmont
Typical Longmont-area James Hardie siding installation cost depends on home size, architecture, tear-off conditions, trim package, sheathing repairs, and style selection. Premium profiles like Hardie Artisan®, board and batten, custom reveals, and decorative trim generally increase the project total compared with standard HardiePlank® lap siding.
Our Longmont James Hardie Siding Process
Here’s exactly what to expect when you choose Northern Lights Exteriors for your Longmont James Hardie project:
Free Consultation
On-site walkthrough, measurements, and discussion of style goals, problem areas, and budget.
Design & Proposal
Detailed line-item proposal with product specs, color renderings, and clear scope.
HOA & Permits
We prepare submittal packages for City of Longmont permits and your HOA architectural review.
Material Order
Pre-finished ColorPlus® Hardie is ordered direct, eliminating jobsite paint delays.
Installation
Manufacturer-spec installation with proper flashing, gaps, fastening, and moisture management.
Walkthrough & Warranty
Final inspection, punch list, and delivery of warranty registration and closeout docs.
Warranty Coverage on Longmont Hardie Projects
- 30-Year Non-Prorated Limited Product Warranty from James Hardie on the siding itself.
- 15-Year Limited Warranty on ColorPlus® Technology finishes.
- 25-Year Limited Warranty on HardieTrim® boards.
- Northern Lights Exteriors Installation Warranty on installation labor.
- Elite Preferred installer status means our installs qualify for the strongest manufacturer-backed coverage available.
Warranty terms summarized for convenience — full terms, conditions, and exclusions are governed by James Hardie’s published warranty documents at the time of installation.
City of Longmont Permits & HOA Architectural Review
Longmont siding replacement projects typically require a City of Longmont building permit, and many of the city’s planned communities — including Prospect New Town, Fox Hill, Ute Creek, and Quail Ridge — also require HOA architectural review with product samples and color boards.
Northern Lights Exteriors provides:
- City of Longmont permit application and submittal package preparation
- HOA architectural review packets with James Hardie product specs, ColorPlus® samples, and elevations
- Historic preservation considerations for Old Town Longmont properties
- Coordination with insurance adjusters on hail-restoration claims (very common in Longmont)
- Inspection scheduling and final closeout documentation
Longmont James Hardie Siding Service Area
Northern Lights Exteriors installs James Hardie® siding throughout Longmont, the St. Vrain Valley, and Northern Colorado — across both Boulder County and Weld County jurisdictions. Whether you’re in central Longmont or in one of the surrounding communities, our crews work this region every day.
Longmont ZIP Codes Served
Primary James Hardie siding service across all Longmont ZIPs:
- 80501
- 80503
- 80504
Including PO Box 80507 mail areas.
Surrounding Cities & ZIPs We Serve
- Niwot — 80503, 80544
- Hygiene — 80533
- Lyons — 80540
- Berthoud — 80513
- Firestone — 80504, 80520
- Frederick — 80530
- Dacono — 80514
- Mead — 80542
- Erie — 80516
- Johnstown — 80534
- Loveland — 80537, 80538
- Gunbarrel — 80301
Counties & Region
- Boulder County (Longmont west of Hover St., Niwot, Hygiene, Lyons, Gunbarrel)
- Weld County (Longmont east of Hover St., Firestone, Frederick, Dacono, Mead, Johnstown)
- St. Vrain Valley region
- Northern Colorado Front Range corridor
Working in a Longmont ZIP that isn’t listed here, or in a smaller St. Vrain Valley community? Reach out — we likely already cover your area.
Questions Longmont Homeowners Ask About James Hardie Siding
Who is the best James Hardie installer in Longmont, Colorado?
Northern Lights Exteriors is the leading James Hardie installer in Longmont, Colorado. The company is an Elite Preferred James Hardie contractor — a designation held by roughly the top 5% of installers nationally — has been a James Hardie President’s Club winner, has installed James Hardie siding across Longmont and the St. Vrain Valley since 2011, and holds a 4.9-star rating from 552 verified reviews.
Is James Hardie siding worth it in Longmont?
Yes. James Hardie fiber cement siding is worth the investment in Longmont because it resists hail — critical in the Hail Alley climate — along with Chinook winds, high-altitude UV, moisture, freeze-thaw cycles, and woodpeckers. It carries a Class A non-combustible fire rating and typically outlasts vinyl, cedar, and engineered wood siding in Colorado conditions.
How long does James Hardie siding last in Colorado?
With proper installation and minimal maintenance, James Hardie fiber cement siding lasts 30 to 50 years in Colorado. Correct flashing, moisture management, fastening, and manufacturer-spec installation matter as much as the product itself, which is why Elite Preferred installation is so important in a climate like Longmont’s.
What siding is best for hail and storm damage in Longmont?
Fiber cement siding — specifically James Hardie — is the top recommendation for hail-prone Longmont homes because it absorbs impact significantly better than vinyl or aluminum and resists the splitting that affects cedar. Individual damaged sections can also be replaced after a hail event without re-siding the entire home.
How much does James Hardie siding cost in Longmont?
Longmont James Hardie siding cost depends on home size, design complexity, trim package, tear-off needs, sheathing repairs, and the siding profile selected. Hardie Artisan, board and batten, and premium trim packages generally cost more than standard HardiePlank lap siding projects. Northern Lights Exteriors provides free, detailed line-item estimates for every Longmont James Hardie project.
Do you install James Hardie siding in Niwot, Hygiene, Firestone, and Frederick?
Yes. Northern Lights Exteriors installs James Hardie siding across all the communities surrounding Longmont, including Niwot, Hygiene, Lyons, Berthoud, Firestone, Frederick, Dacono, Mead, Erie, Johnstown, Gunbarrel, and Loveland. We serve both Boulder County and Weld County across the St. Vrain Valley and broader Northern Colorado Front Range.
Why Choose Northern Lights Exteriors for James Hardie in Longmont
- Elite Preferred James Hardie Contractor since 2011 (top ~5% of installers nationally)
- James Hardie President’s Club recognition
- Serving Colorado since 2001 — over two decades of Front Range experience
- Local Northern Colorado team — not a Denver-first contractor
- Hundreds of Longmont and St. Vrain Valley installations
- Training-focused project managers and dedicated installation crews
- Manufacturer-backed warranty support and proper warranty registration
- City of Longmont permit packets, HOA submittals, and historic preservation documentation
- Insurance restoration experience for Hail Alley claims
- 4.9-star rating from 552 reviews
Longmont Homeowners Rate Northern Lights Exteriors 4.9 Stars
Northern Lights Exteriors has earned a 4.9-star rating from 552 reviews. Homeowners across Longmont and Northern Colorado consistently mention our communication, James Hardie expertise, project organization, and installation quality.
“Great company! We had a complete residing performed. Very professional, fast and excellent workmanship. The finished product looks wonderful! Highly recommended!”
“Great job at the right price. Team was friendly and promptly answered any questions. Probably the best business process of any contractor. Had estimate quickly with no hidden extras. Went above and beyond helping run satellite cable into house”
“Northern Lights was great from start to finish. They are the only contractor that I have had ZERO issues with in some 30 plus years. They kept to schedule and budget, and the quality of the work was top notch. Cleaned up the job site daily, as promised. Their website uses software that allows you to track and have a record of everything relating to you project. Never high pressure sales pitch, just honest presentation.”
Longmont Neighborhoods We Serve
Northern Lights Exteriors installs James Hardie® siding throughout Longmont, Colorado, including:
- Old Town
- Prospect New Town
- Hover Acres
- Stoney Ridge
- Meadow Vale
- Southmoor Park
- Fox Hill
- Ute Creek
- Clover Basin
- Somerset
- Quail Ridge
- McIntosh Lake
- North Longmont
- Renaissance
- Spring Valley
- Wolf Creek
- Mill Village
Many Longmont neighborhoods see frequent insurance restoration work after Hail Alley storms — Hardie’s impact resistance and ColorPlus® finish stability make it the durable choice when you’re replacing siding the second or third time.
Nearby Cities We Also Serve
We work throughout Boulder County and the US-36 corridor, so if you are comparing quotes for a neighbor or a second property, these are the nearby cities we also cover:
How to Read an Exterior Warranty (Before You Sign One)
Warranties are one of the easiest places in this industry to be impressed by the wrong thing. It helps to know that almost every exterior project carries two separate warranties, and they are backed by completely different people.
| Type | Covers | Backed by |
|---|---|---|
| Manufacturer warranty | The product itself — the siding, shingles or window units | The manufacturer. Commonly 20–50 years, and genuinely durable because the company is large and long-established. |
| Installation warranty | How it was installed — flashing, fastening, weather barrier, sealing | The contractor, and only the contractor. It is worth exactly what that company’s continued existence is worth. |
That second row is where most real problems live. The overwhelming majority of exterior failures are not defective product — they are water finding a path through a detail that was installed wrong. So the installation warranty is the one that actually protects you.
Why “lifetime installation warranty” deserves a follow-up question
A lifetime installation warranty is a promise about the contractor’s lifetime, not yours. If a company has been in business eight or twelve years, a lifetime promise is a forecast about a track record that does not exist yet. It is not necessarily dishonest — but it is unverifiable, and it costs nothing to print.
Worth asking any contractor, including us:
- How many years have you been in business under this name and this ownership?
- Is the installation warranty written into the contract, or described verbally?
- What specifically is excluded, and what voids it?
- Who performs the warranty repair — your own crew, or a subcontractor?
- Is it transferable if I sell the house?
Where we stand: Northern Lights Exteriors has been in business since 2001 — about 25 years. We offer a 5-year installation warranty on our workmanship, alongside the manufacturer warranties on the products themselves, which typically run 20 to 50 years. We would rather put a number on it that we have the history to stand behind than print a word that sounds bigger and means less.
Longmont James Hardie® Siding FAQs
How long does James Hardie siding last in Longmont’s climate?
Is James Hardie siding fireproof?
Does James Hardie hold up against Longmont hail?
Do you replace siding on hail-damaged Longmont homes?
Do you offer financing?
Why choose an Elite Preferred contractor for James Hardie siding?
Do you help with City of Longmont permits and HOAs?
How long does a Longmont Hardie siding project take?
Do you install in Niwot, Hygiene, Lyons, Firestone, Frederick, and Mead?
Can I see nearby Longmont projects?
Start Your Longmont James Hardie® Siding Project Today
Whether you’re replacing hail-damaged siding, upgrading to non-combustible materials, or improving curb appeal with a more durable exterior, Northern Lights Exteriors is ready to help with expert design guidance, transparent pricing, and Elite Preferred installation across Longmont and the St. Vrain Valley.
