You have researched the products, compared estimates, chosen a contractor, and signed the contract. Now the crew is scheduled to arrive next Monday. What actually happens from the moment the truck pulls up to the day they pack out? If you have never been through a hardie siding installation in the Chicago area, the process can feel opaque — a flurry of noise, debris, and unfamiliar terminology that stretches across days or weeks depending on the scope of the work.
This article walks through a typical James Hardie siding installation from beginning to end, so you know what to expect, what questions to ask at each stage, and what good workmanship looks like along the way.
Phase One: Pre-Installation Preparation
A well-run siding project starts before anyone picks up a saw. During the days leading up to the installation, your contractor should be handling several things behind the scenes: confirming the material order, scheduling dumpster delivery, verifying that permits have been pulled if required by your municipality, and coordinating crew availability around Chicago's famously unpredictable weather.
On your end, there are a few things to take care of. Move vehicles out of the driveway and away from the house to give the crew room to stage materials and access all sides of the structure. Pull outdoor furniture, grills, and potted plants away from exterior walls — debris will fall, and vibration from prying off old siding can rattle things loose. Trim back shrubs and tree branches that sit within a couple of feet of the house. If you have window-mounted air conditioning units, remove them or discuss protection with the crew chief.
Your contractor should also walk the property with you before any demolition begins. This pre-start walkthrough is where they confirm the scope of work, identify any areas of concern that may not have been visible during the initial estimate — soft spots in the sheathing, hidden damage behind downspouts, unexpected rot around window frames — and set expectations about timeline and daily work hours.
Phase Two: Tear-Off and Substrate Inspection
The first actual day of physical labor usually starts with removing the existing siding. On most Chicago homes, this means prying off old vinyl, aluminum, or deteriorated wood clapboard and loading it into the dumpster. Tear-off is loud, messy work. If your neighbors are close — and in neighborhoods like Lincoln Square, Roscoe Village, and Bridgeport, they usually are — it is worth giving them a heads-up before the project begins.
What happens after tear-off matters enormously. Once the old siding comes down, the crew can finally see the condition of the underlying wall sheathing. In older Chicago homes, particularly those built before 1960, the sheathing may be original wood boards rather than modern plywood or OSB. The crew will inspect every surface for rot, moisture damage, insect damage, and structural deficiency. Any compromised sheathing must be replaced before new siding goes on — this is not optional, and good contractors will not skip it even if it adds cost and time.
This inspection phase is also where experienced fiber cement siding contractors evaluate the existing moisture barrier. The house wrap or felt paper behind the siding is a critical part of the wall system. If it is torn, missing, or inadequately lapped, it needs to be replaced or supplemented. James Hardie requires a code-compliant water-resistive barrier behind all of its products, and skipping this step can void the manufacturer's warranty.
Phase Three: Weather Barrier and Flashing
With the sheathing repaired and solid, the crew installs or replaces the weather-resistive barrier — typically a high-quality house wrap like DuPont Tyvek, Vaproshield, or a similar product. This layer sheds any moisture that gets behind the siding and directs it downward and out of the wall assembly. In Chicago's climate, where wind-driven rain and snowmelt are persistent threats, the quality of this barrier installation is absolutely critical.
Flashing comes next. Every window, door, penetration, and transition point gets carefully flashed with self-adhering membrane or metal flashing. Flashing details are where siding installation expertise really separates the professionals from the amateurs. Kick-out flashing where a roof meets a sidewall. Head flashing above windows. Step flashing along dormers. Pan flashing beneath window sills. Each of these details prevents water from entering the wall cavity, and each must be installed in the correct sequence to work properly.
If your contractor rushes through this phase or treats it as an afterthought, that is a serious red flag. Water intrusion behind fiber cement siding causes the same rot and mold problems in new construction as it does in old. The siding itself is nearly impervious to moisture, but the wall behind it is not.
Phase Four: Siding Installation
Now the actual Hardie board goes up. This is the phase most homeowners think of when they picture a siding project, and it is where the visual transformation happens.
HardiePlank lap siding — the most common product used on Chicago homes — gets installed from the bottom up. The crew sets a starter strip at the base of the wall, then works upward course by course. Each plank overlaps the one below it by a specific amount (typically 1¼ inches), creating the characteristic shadow line that gives lap siding its dimensional appearance.
Cutting fiber cement requires specialized tools. Unlike vinyl, which can be cut with a utility knife, Hardie board demands either fiber cement shears for straight cuts or a circular saw with a dust-reducing blade for angle and detail work. Experienced hardie board installers near you will use shears whenever possible because they produce less silica dust and create cleaner edges.
Nailing is another area where precision matters. James Hardie specifies blind nailing with corrosion-resistant siding nails, placed within a defined zone on each plank. Nails set too deep crack the board. Nails set too shallow leave the plank loose. Nails placed outside the specified zone can cause premature failure. A well-trained crew nails with an almost rhythmic consistency — the spacing and depth are uniform across every wall.
Corners, soffits, and trim areas slow the pace considerably. HardieTrim boards frame windows and doors, cap corners, and create the architectural details that define the finished look. These pieces require precise miters, tight joints, and careful caulking. On a complicated Chicago home — think a two-story Victorian in Wicker Park with bay windows, multiple gable ends, and decorative trim — the detail work can take longer than the field siding.
Phase Five: Caulking, Touch-Up, and Detail Work
Once all the siding and trim are fastened in place, the crew moves into finishing mode. Every butt joint between siding planks gets caulked with a high-quality, paintable sealant. Trim joints are caulked. Gaps around penetrations — light fixtures, hose bibs, electrical outlets, dryer vents — are sealed.
If you chose primed Hardie products rather than the factory-finished ColorPlus option, this is also when painting happens. Primed products must be painted within 180 days of installation, and in practice, most contractors either handle the painting as part of the project or coordinate with a painting subcontractor to follow directly behind the siding crew. In Chicago, scheduling this carefully around weather is important — you need dry conditions and moderate temperatures for paint to cure properly. For a deeper look at color options, see our article on popular Hardie Plank colors for Chicago-area homes.
ColorPlus products, which come factory-painted with a baked-on finish, skip this step entirely, which is one reason many Chicago homeowners choose them despite the higher material cost. The finish is more durable than field-applied paint and eliminates the scheduling complications of an on-site painting phase.
Phase Six: Cleanup and Final Inspection
A professional crew cleans up as they go, but the final cleanup after the last piece is installed should be thorough. This means sweeping the entire perimeter, picking up every nail and scrap of cut material, removing the dumpster, and restoring your landscaping as close to its original condition as possible. Fiber cement scraps are heavy and sharp — responsible disposal matters.
The final walkthrough is your opportunity to inspect the completed work in detail. Walk every wall with the project manager. Look at the siding courses — are they level and consistent? Check the caulk lines — are they clean and continuous? Examine the trim around every window and door. Open and close your windows to make sure nothing is binding. Look at the transition points where siding meets different materials — roof lines, stone or brick sections, deck attachments. These transition details should be clean and properly flashed.
Document anything that needs attention. A reputable contractor will have a punch list process for addressing minor issues found during the walkthrough. No installation is absolutely perfect across thousands of square feet, but the corrections should be completed promptly and professionally.
Timeline Expectations for Chicago Installations
A standard full-siding replacement on a typical Chicago single-family home — roughly 1,500 to 2,500 square feet of siding area — generally takes between one and three weeks of actual working days. The variables that stretch or compress this timeline include the size and complexity of the house, the extent of sheathing repairs needed, the weather, and the crew size.
Chicago weather is the wildcard that affects every outdoor construction project. Rain delays are inevitable during spring and fall. Extreme cold can affect caulk application and paint adhesion. Experienced james hardie siding installers in the Chicago area build weather contingency into their schedules and communicate proactively when delays push the timeline. For background on how the product itself handles these conditions, read our piece on why Hardie board siding stands up to Chicago's brutal weather.
Choosing the Right Installation Partner
The quality of a hardie siding installation depends almost entirely on the crew performing the work. The product is superb — it resists rot, fire, insects, and impact in ways that vinyl and wood simply cannot match — but it demands skilled installation to deliver on those promises. Every phase described above requires knowledge, attention to detail, and genuine craftsmanship.
When researching siding installation near you, look for contractors who can walk you through this process in detail during the estimate. A crew that understands and can articulate each phase is a crew that will execute it properly. Companies like Buzz Chicago Hardie Board Siding exemplify the kind of specialization that fiber cement demands — a tight focus on Hardie products rather than a generalist approach that treats all siding materials interchangeably.
If you are still early in the contractor selection process, our guide to how to choose a siding contractor in Chicago covers the vetting steps in detail. And for a comprehensive look at the costs involved, see our breakdown of James Hardie siding costs in the Chicago area.