True Cost of Installing Hardie Board Siding: Budgeting for Success

When Colorado homeowners start researching re-siding options, the cost of installing hardie board siding is usually one of the first numbers they want to pin down. And for good reason — James Hardie fiber cement products carry a 30-year non-prorated limited warranty, a Class A fire rating, and wind testing up to 110 mph, which makes them a serious investment in long-term protection. But the final price tag depends on several moving parts, and understanding those factors up front helps you budget with confidence rather than guesswork.

What Goes into the Cost of Installing Hardie Board Siding

Every siding quote we provide breaks down into three core categories: materials, labor, and preparation work. James Hardie outlines these same cost buckets in their siding replacement cost guide, and they line up with what we see on Colorado projects from Highlands Ranch to Thornton every week.

Here’s what each category typically includes:

• Materials: HardiePlank lap siding boards, trim pieces, soffit panels, and weather barriers. ColorPlus Technology finishes — James Hardie’s baked-on coating backed by a 15-year finish warranty — cost more upfront than primed-for-paint boards but eliminate the need for field painting.
• Labor: Fiber cement requires specialized cutting tools and install techniques. Experienced crews move faster and produce cleaner results, which is why labor rates vary between contractors.
• Preparation and removal: Tearing off old siding, repairing damaged sheathing, installing house wrap, and addressing any moisture or rot issues underneath. Older homes in neighborhoods like Park Hill or Arvada often need more prep work than newer builds in Stapleton.

Home Size and Design Drive Material Quantities

The biggest single factor in your total cost is the square footage of exterior wall surface. A two-story home with complex rooflines, multiple gables, and dormers requires more cuts, more waste, and more labor hours than a simple single-story ranch. Homes with tall walls — common in Front Range neighborhoods perched against the foothills near Boulder and Golden — also add scaffolding or lift equipment costs.

Beyond square footage, the number of openings matters. Every window, door, and garage opening means additional trim pieces, flashing, and detail work. A home with 15 windows costs more to side than one with five, even if the total wall area is similar.

Colorplus Technology Vs. Primed for Paint

James Hardie offers two finish options, and the choice impacts both upfront cost and long-term maintenance. ColorPlus Technology is a factory-applied, baked-on finish that resists fading, chalking, and UV damage — a real advantage at Colorado’s altitude where UV intensity is roughly 25% higher than at sea level. It carries a 15-year finish warranty, which means no repainting for well over a decade.

Primed for Paint boards cost less per square foot but require a full field paint application after install. In Colorado’s freeze-thaw climate, that paint cycle typically needs refreshing every 5 to 7 years. Over the life of a 30-year warranty, ColorPlus usually saves money — but the lower initial price of primed boards can help with tight upfront budgets.

Tear-off and Prep Work in Older Colorado Homes

Many homes in Denver metro neighborhoods built before 1990 — think Wash Park, Baker, and parts of Aurora — have original wood or aluminum siding that needs full removal before new Hardie boards go up. Tear-off labor adds to the project cost, and it also reveals what’s underneath. Rotted sheathing, damaged house wrap, or outdated flashing all need to be fixed before the new siding goes on.

This is one area where the cost of installing hardie board siding can climb beyond initial estimates. A thorough contractor will inspect behind the existing siding during the quoting process and flag potential issues, but hidden damage only becomes visible once the old material is off the wall. Setting aside a 10 to 15% contingency for prep repairs is a smart move for older properties.

Colorado Hail and Impact Resistance

The Denver metro area sees hailstones of 2 inches or larger multiple times per decade, and insurance companies know it. James Hardie fiber cement siding handles impact significantly better than vinyl, and many Colorado homeowners see lower insurance premiums after upgrading. That long-term savings doesn’t show up in the installation quote, but it offsets the cost of installing hardie board siding over time.

For homes in hail-prone corridors — particularly along the Palmer Divide near Castle Rock and Parker, or out east toward Aurora and Centennial — fiber cement’s durability is a practical financial argument, not just an aesthetic one.

Getting an Accurate Quote for Your Project

The only way to know what your project will cost is to get an on-site estimate. We measure your home’s exterior, inspect the existing siding and substrate, discuss finish options, and provide an itemized quote that shows materials, labor, prep work, and any contingencies. No vague ranges, no surprise add-ons halfway through the job.

If you’re planning a siding replacement in the Denver metro area or along the Front Range, Scottish Home Improvements is ready to help. We install James Hardie products exclusively and stand behind our workmanship with solid warranties. Contact Scottish Home Improvements today for a free, detailed estimate on your Hardie board siding project.