(289) 302 5655

52 Vine St S, St. Catharines, ON L2R 3X8

Mon - Fri 8.00 - 2.00

Sat - Sun Closed

(289) 302 5655

52 Vine St S, St. Catharines, ON L2R 3X8

Mon - Fri 8.00 - 2.00

Sat - Sun Closed

(289) 302 5655

Windows, Doors & Siding Installation in Thorold, Ontario

Let us help you with

Window Installation

Door Installation

Siding Installation

Soffit & Fascia Installation

Eavestrough Installation

Gutter Leaf Guard Installation

Roofing Installation

Few reasons to choose Gemini windows, doors & siding

Renovation Process

We will be professional at all stages of the renovation process. Our work is done in a timely and efficient manner, and we take care to avoid any unnecessary damage while we're working.

Quality

We will provide quality products and services at a reasonable price.

Practices

We teach our customers what they need to know so that they can make a good decision about whether or not they want to hire us for the services..

Trust

We will create a trusting and supportive environment where no question is a bad question.

Safety Work

We will make sure to create a safe work area for our customers and installers.

Free Estimate

We will provide FREE estimates with no strings attached.

We love helping customers across entire Niagara Region & Thorold is no exception

Whether you are a newer member of our Niagara community or you have been living here your entire life, you know this region is an incredible place full of beauty and culture.

If you ever need assistance with the replacement of your front doors, windows or even siding and roofing, Gemini Windows, Doors & Siding would love to be your Trusted Niagara Contractor.

Give us a call or text and you wont be disappointed. We pride ourselves on quick response time and top notch customer service.

Let us help you with any of these services

Gutter Leaf Guard Installation

Roofing Installation

What Our Clients Are Saying

“Rob and his team at Gemini Windows, Doors and Siding is one of the most trusted Windows and Doors Installers in Niagara Region. Quality and Customer Service is their pride and i cant recommend them enough! Great job Gemini!”

Peter

“Rob's team did a great job installing a window in my basement and finished the details on the inside with the trim. I would recommend them for quality workmanship and great value for your dollar.”

Martin

“We just had our siding, eavestrough, soffit and fascia and front door completed and Rob and his team were very good. Highly recommend them. I will be using them again in the future for other projects for sure. Thanks Rob Lavorato!”

Shawn

“Rob is a man of integrity and has done several jobs for me personally and my Clients. Always done professionally and reasonably priced. I feel totally comfortable using or referring Gemini Widows,Doors and Siding.”

David

“Rob and his amazing crew completed fascia and eavestrough work at my house and changing out some windows. Amazing to deal with from start to finish. Highly recommend this company.”

Jindy

How do you choose a Contractor for your Home Improvement projects?

You want someone who will treat your home like it’s their own. Someone who is reliable and trustworthy. A company that delivers on its promises. That’s what we believe in at Gemini Windows, Doors & Siding. We take pride in our work, and we make sure you feel satisfied when the project is complete.

We know how important it is to have a good relationship with the people you choose to help you improve your living space.

Your satisfaction is our top priority!

What our clients say

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You can rely on our help to get the job done.

You can always trust us to deliver an honest and quality service.

Get in Touch

If you have any question or feedback, feel free to contact us. You can also call us or visit us at our office. Please find all contact info on right panel. We try to get back to you as soon as possible.

Call or Text

(289) 302 5655

FAQ

What window installation services does Gemini WDS offer in Thorold?

They provide professional window installation, alongside complementary services such as doors, siding, soffit and fascia, eavestroughs, gutter guards, and roofing—covering all aspects of exterior home improvement in Thorold and the wider Niagara Region

What experience and approach does Gemini WDS bring to window installation?

With over 25 years of combined experience, their approach emphasizes professionalism, timely work, minimal disruption to your home, reasonable pricing, education, trust, safety, and a customer-friendly renovation process

Do they offer free quotes and estimates for Thorold-based projects?

Yes, Gemini provides free, no-obligation estimates and quotes—simply call or text to request one

How responsive and customer-focused are their services in Thorold?

They pride themselves on quick response times, top-notch customer service, and treating your home with care and respect—ensuring a positive experience from start to finish

Which communities do they serve beyond Thorold?

Apart from Thorold, their window installation services extend across the Niagara Region, including St. Catharines, Welland, Niagara Falls, Niagara-on-the-Lake, Fort Erie, Port Colborne, Pelham, Fonthill, Fenwick, Wainfleet, Beamsville, Jordan Village, Lincoln, Dunnville, Stevensville, Ridgeway, and Grimsby

What do customers say about Gemini WDS’s installation quality?

Clients frequently commend their workmanship. One shared, "Rob and his team at Gemini Windows, Doors and Siding is one of the most trusted Windows and Doors Installers in Niagara Region. Quality and Customer Service is their pride and I can’t recommend them enough! Great job Gemini!”

Where is Gemini WDS located, and what are their hours?

Their office is at 52 Vine St South in St. Catharines (ON L2R 3X8), and they operate Monday through Friday from 8:00 AM to 2:00 PM. They are closed on weekends

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