Case study · Covered deck → addition · Before & after
Aging covered deck converted into a four-season sunroom addition
We took an open covered deck off the back of a two-story home and converted it into a fully enclosed addition — new walls, header beam, four-window bank, sliding patio door, matching siding, and a tied-in shingle roofline. Same footprint, completely new conditioned living space.


- Scope
- Convert covered deck to conditioned addition — framing, sheathing, roofing tie-in, windows & door, siding, and exterior trim.
- Materials
- 2x framing, ZIP/OSB sheathing, asphalt shingles, vinyl siding to match existing, white trim, double-hung windows, and a sliding patio door.
- Highlights
- Adds real, year-round square footage without expanding the footprint — and the exterior reads as one continuous home.
- Engineered header beam to carry the new roof load
- New flashing and roof tie-in to keep the existing home dry
- Matching siding profile, color, and trim details
- Energy-efficient double-hung windows and slider