Project Description
A two-story home in Columbia, Maryland needed a complete shingle roof replacement that involved more than simply removing and replacing the visible shingles.
The roof included multiple slopes, lower roof sections, transitions, and a skylight that required careful integration with the new roofing system. During the tear-off, A1 Roofing’s KangaRoof also addressed sections of the exposed roof decking before installing the new protective layers and architectural shingles.
Project Overview
- Location: Columbia, MD
- Property type: Two-story residential home
- Service performed: Complete asphalt shingle roof replacement
- Roofing material: Architectural asphalt shingles
- Additional work: Localized roof decking replacement and skylight flashing
- Underlayment: Synthetic roofing underlayment
Removing the Existing Shingle Roof
A1 Roofing’s KangaRoof began by removing the existing asphalt roofing materials from the main roof and adjoining sections.
The tear-off exposed the wood roof deck and allowed the crew to evaluate the surface before covering it with the new system. The project photographs show large sections of exposed sheathing as the crew progressed across the home.
This approach is particularly important during a complete roof replacement, because concealed decking conditions can only be fully evaluated after the existing roof covering has been removed.
Localized Roof Decking Replacement
During preparation, sections of the existing roof deck required additional work.
The crew installed new wood sheathing where needed to create a solid and consistent substrate for the roofing materials above. Rather than replacing decking unnecessarily across the entire roof, the project focused on the areas that required attention.
Once the deck was prepared, synthetic roofing underlayment was installed across the exposed surface in overlapping courses.
Installing the New Architectural Shingles
New architectural asphalt shingles were then installed from the lower roof edges upward.
The crew worked across the different roof planes in stages, creating consistent shingle courses while integrating the new roofing with valleys, transitions, roof penetrations, and adjoining sections.
Homeowners considering the same type of roofing system can learn more about asphalt roofing options available from A1 Roofing’s KangaRoof.
Detailed Skylight Flashing Work
The skylight was one of the most important details on this roof.
Because a skylight interrupts the continuous roof surface, the surrounding shingles and metal flashing needed to work together to direct water around the opening. The project photos show the crew fitting the new shingles around the skylight while incorporating flashing into the roofing system.
This distinguishes the project from the other Columbia shingle replacements and gives the case study a clear individual focus.
The Completed Result
The project resulted in a complete new architectural shingle roofing system built over a prepared roof deck.
The documented scope included:
- Full removal of the existing shingles.
- Inspection and preparation of the exposed roof deck.
- Localized installation of new roof sheathing.
- Installation of synthetic underlayment.
- New architectural asphalt shingles.
- Detailed roofing and flashing work around the skylight.
- Completion of transitions across multiple roof sections.
A1 Roofing’s KangaRoof addressed both the visible roofing surface and the underlying areas that required attention instead of treating the project as a simple cosmetic shingle replacement.
Need a Shingle Roof Replacement in Columbia, MD?
Homes with skylights, multiple roof planes, aging shingles, or questionable decking may require additional preparation during a roof replacement.
A1 Roofing’s KangaRoof provides residential roofing services throughout Columbia and surrounding Maryland communities, including complete shingle replacement, roof decking work, flashing, and roof repairs. The company currently lists residential shingle replacement among its core Columbia roofing services.
Call (410) 799-1600 or request an online roofing estimate to discuss your project.

















