Questions? Call us directly
(519) 542-6006
3 Season Sunrooms
Expand your living space with a 3 season sunroom
Why Choose a 3 Season Sunroom?
A 3 season sunroom is the ideal upgrade for homeowners in Sarnia and across Lambton County who want to stretch their outdoor living well beyond a short summer. In our beautiful but unpredictable Southwestern Ontario climate — with stunning lake views, warm sunny days, and those inevitable sudden showers — a custom 3 season sunroom from SunSar Sunrooms transforms your backyard into a bright, protected, open-air oasis you can enjoy from early spring right through crisp fall evenings.
Unlike a fully insulated 4 season sunroom, a 3 season sunroom focuses on affordable comfort during the seasons you actually want to be outside: spring blooms, summer BBQs, and golden fall afternoons. It delivers that perfect balance of feeling connected to nature while staying shielded from wind, rain, pollen, leaves, and insects — all without the higher price tag or complexity of a heated addition.
Bug-Free Outdoor Living
Screens keep mosquitoes, black flies, wasps, and spiders out while letting fresh air flow freely.
Weather Protection
Stay dry and comfortable during spring showers, summer breezes, or early fall chill.
Affordable & Versatile
More affordable than 4-season options, with removable screens for open-air summer days.
Real 3 Season Sunroom Projects in Sarnia & Lambton County
Browse our collection of custom 3 season sunrooms. Every project is built to withstand our local weather while maximizing comfort and natural light.
How SunSar Builds Your Perfect 3 Season Sunroom
1. Free In-Home Consultation
We visit your property in Sarnia or Lambton County to understand your vision, measure your patio or porch, and discuss options that fit your budget and lifestyle.
2. Custom Design
Every 3 season sunroom is tailored to your home — matching rooflines, siding, and your vision for the space.
3. High-Quality Materials
We use durable aluminum framing, strong screens, and optional glass panels for maximum light and airflow.
4. Professional Installation
Our team installs with care and precision — most projects complete in 1–3 weeks.