Addition
Cathedral Timber Sunroom Addition
Ground-up four-season addition built to expand primary living space year-round: structural timber truss cathedral ceiling, high-performance black casement glass walls, stone fireplace, and wide-plank oak over radiant floor heating.
- LocationBoston, NY
- On site7 weeks on site
- Budget band$85k – $120k
- CategoryAddition


What homeowners come to us with
The homeowners loved their wooded property but felt boxed in during long Western New York winters. Previous three-season porch proposals were rejected because they would be freezing and unusable from November to April.
How we build it
We excavated a full perimeter frost foundation and framed a fully insulated thermal envelope. Designed a custom roof pitch to blend seamlessly with the original architecture, installed low-E argon insulated casement units, and plumbed in-floor hydronic heating.
What you end up with
A warm, sun-drenched room that stays 70 degrees during zero-degree January snowstorms, offering 270-degree panoramic woodland views and the warmth of a stone hearth.
