Wilholme Sunroom Home Addition in St. Catharines

renovation overview

RENOVATION TYPE: Home addition along with full home renovation (featured in separate project spotlight)

LOCATION: Located in St. Catharines, Ontario, this home is in a city that blends history with modern charm. With a vibrant downtown, scenic waterfront, and abundant outdoor spaces, it offers something for everyone

MAIN CHALLENGES: Initially, this area served as a covered patio at the rear of the house. Seeking to expand their indoor living area while maintaining ample natural light, the homeowners opted to convert it into a sunroom addition.

RENOVATION COST: A home addition similar to this would cost around $75,000.


Niagara home addition with taupe siding

Before/During The Renovation

Scope of Work

CARPENTRY: The patio’s floorboards were replaced, and the existing sunroom deck was trimmed back. A new rim joist was constructed, and a subfloor was installed. Exterior walls were framed, and a 2-step staircase was added for access. 

EXTERIOR FINISH: Fiberglass insulation was used to insulate the exterior walls and floors, followed by the application of a Tyvek air barrier. James Hardie Board siding was applied to seamlessly blend with the existing house. Custom vinyl sliding windows were then installed.

DRYWALL: Fresh drywall was put up, meticulously taped, and expertly sanded for a smooth finish.

INTERIOR FINISH: The interior ceiling featured James Hardie interior shiplap. Luxury vinyl plank flooring was seamlessly installed to complement the space. Fresh baseboards, casing, and shoe moulds were meticulously fitted. A custom-painted double French door with a transom window was added, while a new exterior door leading to the backyard was also installed, enhancing accessibility and functionality.

ELECTRICAL & HVAC: Receptacles were installed in the exterior walls of the sunroom. Pot lights were installed in the sunroom ceiling. Two new HvAC lines and registers were tied into the existingHVAC system. 

after the renovation