Outdoor living in Portsmouth
Build More Life Into Your Backyard
From intimate landings to full outdoor rooms, we build decks with careful framing, durable finishes, and clean transitions to the home.
Explore deck buildingReusable stock photo sourcePortsmouthRI
Deck Builder & Roofing Contractor
Portsmouth Deck Builder & Roofing Contractor
New England homes deserve decks built for daily life and roofs built for real weather.
Protection overhead
Reliable Protection from the Top Down
Our roofing work pairs durable materials with careful installation, clear communication, and a well-defined written proposal.
Explore roofingLicensed & Insured
Established in 2022
Woman-Owned Business
Detailed Written Proposals
Why Portsmouth Homeowners Choose Cornerstone
Local Service
Based in East Greenwich and serving homeowners throughout Rhode Island and eastern Connecticut.
Clear Communication
Defined scopes, material selections, progress updates, and direct answers throughout the project.
Permit Coordination
Applicable project information is prepared and coordinated when local approval is required.
Property-Specific Planning
Recommendations reflect the home, site access, exposure, drainage, and existing conditions.
Deck and Roofing Projects in Portsmouth
Coastal exposure, salt air, wind, and moisture can influence material choices and exterior detailing. Cornerstone plans each deck and roofing scope around the home’s actual exposure and existing conditions.
Outdoor Spaces That Feel Like Home
Create a comfortable place for meals, entertaining, and quiet mornings with a deck tailored to your property and priorities.
Roof Replacement with a Complete-System Approach
Protect the home below with a roof plan that addresses ventilation, ice-and-water protection, flashing, and long-term performance.
Start Your Portsmouth Project
Call (401) 500-5913 or request a free estimate online. Cornerstone prepares detailed scopes and coordinates required permit information.
Our Construction Process
Site Visit
We review your goals, existing conditions, access, and project requirements.
Written Proposal
You receive a defined scope with planned materials and pricing.
Planning & Permits
Selections are finalized and required project information is prepared.
Build & Walkthrough
We communicate during construction and finish with a final review.