James Hardie Siding Replacement on Roma Court in Longmont, CO – Trading 20-Year-Old Fiber Cement for Boothbay Blue

Project Summary

WestPro completed a siding and gutter replacement on this Longmont, CO home in November 2025. Our team installed James Hardie 8.25-inch HardiePlank Lap Siding in Boothbay Blue, paired with James Hardie HardieTrim in Cobblestone and a 5-inch Seamless Aluminum Gutter System. The project was completed over 14 days.

The Problem

When Jeff first reached out, he was dealing with water leaking into his main bedroom from the roof corner. Our inspection revealed that the existing cement siding had cracks and overdriven nails, with the bottom boards beginning to deteriorate. We also found moisture-ridden trim around several windows and pest damage on the fascia boards at the roof junctions.

The siding had simply reached the end of its useful life. Patching the worst areas would only have left the surrounding aged boards to fail next, so a full replacement was the fix that would actually last.

Why It Needed Replacing

A spot repair would not have been a lasting fix because the surrounding siding and trim were already compromised by moisture and age. Replacing the full exterior allowed us to address the deteriorated fascia and moisture issues at the wall structure level, ensuring the new siding had a solid foundation.

What We Did

We began by removing the old siding and addressing the substrate issues, replacing rotted plywood sheathing where needed. We then installed the James Hardie 8.25-inch HardiePlank Lap Siding in Boothbay Blue across the exterior walls. The trim was completed using James Hardie HardieTrim in Cobblestone to match the homeowner's vision.

As part of the additional scope, we installed new roof vents and new drip edge along the eaves and rakes. Finally, we replaced the gutter system with a 5-inch Seamless Aluminum Gutter System to complete the exterior update.

Project Details

This home in Longmont, CO involved a full siding replacement covering 372 square feet of siding area. The project also included the installation of 256 linear feet of gutters. The work was coordinated with roof vent and drip edge updates as part of the broader exterior refresh.

The project was completed in November 2025.

Materials Used

• 5" Seamless Aluminum Gutter System
• James Hardie 8.25" HardiePlank Lap Siding in Boothbay Blue
• James Hardie HardieTrim in Cobblestone

Price Context

Homeowners considering a similar James Hardie 8.25" HardiePlank Lap Siding – Primed project in Colorado should generally expect pricing in the range of $19.00–$23.00/sq ft installed. Pricing varies based on the siding profile, wall complexity, and existing-siding removal requirements. Sheathing condition plays a major role in cost, as replacing rotted or damaged plywood adds to the total. This homeowner chose primed HardiePlank, which means the siding gets painted after installation, a step that typically adds significant cost depending on the home size.

Homeowners considering a similar 5" Seamless Aluminum Gutters project in Colorado should generally expect pricing in the range of $13.00–$15.00/LF installed. Costs depend on the total linear footage, the number of downspouts, and site access. Seamless gutters are custom-formed on site from a continuous coil of aluminum, eliminating seams where leaks often occur. This gutter replacement was part of a larger project, which is the most efficient way to do it since the crew is already on site.

Pricing reflects WestPro project data. For an exact price on your home, the best next step is a free, no-obligation inspection.

The Result

Finished in November 2025, this home now features a fresh, durable exterior with the Boothbay Blue siding and Cobblestone trim. The new siding and seamless gutters provide a unified look while resolving the moisture and deterioration issues found during the inspection. Projects like this are common throughout Longmont, where aging siding and fascia repairs are frequent needs for homes built in the early 2000s.

Thinking about a similar project for your home? Schedule a free inspection with WestPro to get started.