Sunroom Siding and Window Replacement in Arvada, Colorado
This homeowner in Arvada had a sunroom that needed attention on two fronts: the windows and the siding had both deteriorated to the point where replacing them made more sense than trying to repair either one. Rather than tackle them separately, the homeowner decided to do both at once, which made sense from a logistics standpoint and helped ensure everything would match and seal up correctly when the work was done. We replaced the windows, siding, trim, soffits, and fascia on the sunroom and painted it all to match the rest of the house.
What We Did
- Removed and replaced the deteriorated windows on the sunroom with Pella Impervia fiberglass windows
- Removed the old siding and installed board and batten James Hardie fiber cement siding in primed form
- Replaced the trim on the sunroom with James Hardie fiber cement trim
- Replaced the soffits and fascia on the sunroom
- Painted the new siding, trim, soffits, and fascia to match the existing exterior of the home
Doing Windows and Siding at the Same Time
When a sunroom or addition has both aging windows and failing siding, there's a real case for replacing them together rather than in separate projects. The two systems work in relationship with each other around the window openings, and doing one without the other can mean tearing into fresh work later or leaving a potential gap in how water is managed at those transitions.
Beyond the practical overlap, pairing the projects typically means less disruption overall. The area is opened up once, flashed and detailed correctly once, and finished in a single pass. If your sunroom is showing wear on multiple surfaces, it's worth getting an assessment of the full scope before committing to a partial fix.
On the materials side, fiber cement siding holds up well in Colorado's climate, which cycles through UV exposure, moisture, and temperature swings across the seasons. It won't rot, and it takes paint well, which is what makes it a workable choice when the goal is a finish that blends with the rest of the house.
A Sunroom Restored in Arvada
This project gave the homeowner a sunroom that's tight, well-finished, and consistent with the rest of the home's exterior. The combination of new windows and new siding means both the structural envelope and the aesthetic are in good shape going forward.
Frequently Asked Questions
Why replace windows and siding at the same time?
The two systems meet at the window openings, so replacing them together allows for proper flashing and integration from the start. Doing them separately can mean redoing work or accepting a less-than-ideal transition between old and new materials.
What is board and batten siding?
Board and batten is a siding style that uses alternating wide panels and narrow vertical strips. It has a clean, somewhat traditional look and works well on additions like sunrooms where you want a finished appearance that complements the main structure.
Why use James Hardie fiber cement instead of vinyl or wood on a sunroom?
Fiber cement doesn't rot, doesn't warp from moisture, and holds paint well over time. On a sunroom, which often gets sun and weather exposure on multiple sides, those properties make it a durable choice that requires less ongoing maintenance than wood and is more dimensionally stable than vinyl.
How do you match new paint to the rest of the house?
When we paint new siding to match an existing home, we color-match to what's already on the house. In this case, the goal was a consistent look across the sunroom and the main exterior, which is achievable as long as the existing finish is in reasonable condition and a good sample is available for matching.
How long does fiber cement siding last?
James Hardie fiber cement siding is manufactured with a 30-year limited warranty, though the actual service life depends on proper installation, climate conditions, and how well the paint finish is maintained over time. In Colorado's climate, keeping the paint in good condition is the most important ongoing maintenance task.


