SunSar
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Sarnia's Trusted Sunroom Builder for Over 30 Years

For over 30 years, SunSar Sunrooms has proudly served Sarnia and Lambton County with custom-built 3 & 4 season sunrooms that bring the outdoors in.

We specialize in three and four season sunrooms, screen rooms, and energy-efficient window & door replacements — all crafted with Canadian manufactured materials and attention to detail.

Sunroom Enclosures

Transform your ordinary patio or covered porch into a stunning, year-round sunroom enclosure with SunSar Sunrooms.

Our custom sunroom enclosures create beautiful outdoor living spaces that help protect you from wind, rain, insects, and seasonal changes while still maintaining your home with natural light!

Our enclosures are perfect for front porches, grade entrances, existing patios, or covered roofs.

At SunSar Sunrooms we strive to make our enclosures blend seamlessly with your home's architecture.

SunSar custom patio enclosure with glass walls in Sarnia, Ontario
View Project 1
Covered porch converted to sunroom enclosure by SunSar Sunrooms, Lambton County
View Project 2
Bright 3 season sunroom with panoramic windows in Sarnia home
View Project 1
Interior of 3 season sunroom addition with natural light, Lambton County
View Project 2

3 Season Sunrooms

Enjoy three seasons of beautiful outdoor living with our popular 3 season sunrooms. Perfect for spring through fall, these bright, airy spaces extend your patio or covered porch into a bug-free, weather-protected room. Ideal for entertaining, relaxing, or creating a seamless grade entrance transition, our 3 season sunrooms use high-quality materials that let you embrace the outdoors without the discomfort of rain, wind, or insects.

  • • Perfect for spring, summer & fall enjoyment
  • • Bug-free & weather-protected patio space
  • • Seamless grade entrance & covered porch integration
  • • Bright, open designs with natural light
  • • Affordable way to expand your living area

Sunroom Additions

Looking to expand your living space with a stunning home addition? Our custom sunroom additions create beautiful, functional rooms that blend seamlessly with your existing home. Whether you want a 3-season sunroom, 4-season retreat, or a fully enclosed patio conversion, we build sunroom additions that add value, comfort, and natural light to your property.

  • • Custom home additions for any style
  • • 3 & 4 season options for year-round use
  • • Seamless integration with grade entrances
  • • Increase home value & living space
  • • Expert design & professional installation
Custom 4 season sunroom addition extending living space in Sarnia home
View Project 1
SunSar Sunrooms home addition with insulated glass and year-round comfort
View Project 2

Sunroom FAQs

Common questions about sunrooms, pricing, and our services in Sarnia & Lambton County.

What is a 3 season sunroom?

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A 3 season sunroom is a bright, enclosed living space designed to be enjoyed from spring through fall. It features screened or glass walls that let in natural light and fresh air while keeping out bugs, rain, and wind. Unlike a 4 season sunroom, it is not insulated or heated, so it is not intended for winter use.

What is the difference between a 3 season and a 4 season sunroom?

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A 3 season sunroom is designed for spring, summer, and fall use with single-pane glass or screens and no insulation. A 4 season sunroom is fully insulated with energy-efficient double- or triple-pane windows, climate control, and weatherproofing so it can be used comfortably all year — even through cold Ontario winters.

How much does a sunroom cost in Sarnia?

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Sunroom costs in Sarnia vary depending on the size, style (3 season vs. 4 season), materials, and site conditions. We offer free, no-obligation in-home consultations so we can provide an accurate quote tailored to your project. Call us at (519) 542-6006 to schedule yours.

Do you offer free quotes?

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Yes! SunSar Sunrooms offers completely free, no-obligation in-home consultations and quotes. We will visit your home, assess your space, discuss your vision, and provide a detailed estimate — all at no cost to you.

What areas do you serve?

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SunSar Sunrooms proudly serves Sarnia, Point Edward, Bright's Grove, Camlachie, Corunna, Petrolia, and the wider Lambton County area in Ontario, Canada. We have been building sunrooms in this community for over 30 years.

How long does sunroom installation take?

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Installation timelines depend on the complexity of the project. A typical sunroom enclosure or 3 season sunroom can be completed in 1–3 weeks, while larger 4 season additions may take 3–6 weeks. We will provide a clear timeline during your free consultation.

Ready to Start Your Sunroom?

Get in touch for a free consultation and no-obligation quote. We're here to help bring the outdoors, inside!