ABOUT US
Our Approach
At MDT, we understand that the most important aspect of any backyard renovation is not the work itself, but the people who are doing it. That’s why we only work with the best deck-building craftsmen in the business. With over 60 years of combined experience and attention to detail, our team will exceed your expectations and deliver a stunning custom-made outdoor space you will love.
After an initial phone or email consultation, a salesperson will come to your home and do an assessment of the project and the space. In this meeting, we discuss your needs and wants for the project. We can also offer design inspiration in 3D drawings if desired.
After the site meeting, we craft a proposal of all features and designs for the project. We will return at a later date to present the proposal at your convenience. Every detail of the project will be itemized on the proposal.
We use the best quality material we can get within the agreed-upon budget and don’t cut any corners.
Contact Us Today to Get Started on Your Dream Deck




Our Story
Mississauga Decks & Trim today provides expert custom deck building services in the Greater Toronto area, and is the result of a wealth of experience in woodworking, from finish carpentry to deck building. Created in 2016, it is the manifestation of the goals of John Morrissey, who originally hails from Clonmel, a small town in Tipperary, Ireland, a place that instilled a strong sense of community in him. Years later, his custom outdoor living space and deck installation business offers up the perfect combination of his and his team’s knowledge and skill, delivered with that same sense of community.

Our Values
Mississauga Decks & Trim (MDT) provide full guarantee to our services, if any repair or replace during its specified guaranteed period. We hereby to provides 7 star guarantees for our clients;
- Family based values.
- Personal visit
- Build to budget
- Trust
- Quality
- Communication
- Warranty
Why Partner With us ?
Do you want to transform your outdoor living space into the backyard oasis of your dreams but don’t know where to start?
Mississauga Decks & Trim can help. We are a full-service deck and trim contractor with over 60 years of combined experience in the industry. We specialize in custom decks, fences, privacy screens, railings, benches, planters, pergolas, gazebos, and other outdoor structures.
Mississauga Decks and Trim can help. We are a full-service deck and trim contractor with over 60 years of combined experience in the industry. We specialize in custom decks, fences, privacy screens, railings, benches, planters, pergolas, gazebos, and other outdoor structures.
Mississauga Decks & Trim (MDT) are a reliable custom deck builder, that specializes in superb outdoor living spaces for both homes and businesses. Our crews are made up of highly-skilled, seasoned Red Seal Carpenters and we take no shortcuts. Our value is that we respect your investment, your time, and your property. Our trim carpenters are dedicated, love what they do, they are committed to providing the best possible results, and providing a clean and safe working environment on every Jobsite we work on.
Frequently Asked Questions
If you have any further questions please contact
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My backyard is a bit of an embarrassment! What can you do?
We can do anything you want. We specialize in high-end custom decks and outdoor living solutions while offering a wide variety of materials including exotic hardwoods such as Ipe, Garapa, heat-treated Ash, PVC, composites and Cedar. Flip through a magazine, look online – send us pictures of what you want your space to look like, and we can book a consultation to discuss.
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Are you licensed and insured?
Yes, we are licensed master carpenters. We have public liability insurance up to $2,000,000 and have good standing WSIB insurance.
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We don’t have much property but our house is on high ground. Is it possible to build a high deck that allows the use of the space underneath it?
Yes again! Our premium-level custom-made rubber membrane waterproofing systems will ensure that area stays dry. This enables you to maximize your living space, watch TV and relax outdoors no matter what the weather throws at you.
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How big is your operation?
Our teams, each of which consists of a Lead and Assistant Carpenter can work both independently and collectively depending on the size of the job. Each team aims for the same high standard and quality of workmanship. The Lead Carpenter is empowered to address any questions or concerns you may have throughout the project. Our team of carpenters has a combined 60 years of experience creating outstanding outdoor living spaces.
Testimonials
Featured clients success stories
John and his crew did an incredible job building our new deck. The deck is almost 800 sq ft, and has 2 privacy screens and a large pergola in the middle. John is meticulous in his detail. Every cut is sealed. No end cuts are exposed. End cuts are all...

Wayne
We are very happy with the deck that John and his team built for us. Right from the beginning John was very professional and pleasant to work with. He provided timely responses to all our questions and offered invaluable design input. John’s expertise as a carpenter was readily apparent in...

Linda McRae
John and his team completed our deck recently. John, Art, and Lenny did a fantastic job. Starting work on time, working hard during extreme heat. The project was kept on budget and everything was professionally done with care and attention to detail. Thank you, John, for building our dream deck....

Bozenna Jarchowski
We hired John again to tackle our trim and baseboards installation. He had done such a good job with our sunroom and bathroom trim. We recently had him in for the kitchen reno. He is always attending to detail and reapplied our trim carefully. He was able to manufacture windowsills...

Barbara, Toronto
John and his crew did an absolutely amazing job rebuilding our 3 level backyard deck!! Our existing 25-year-old deck had to be completely torn down and a new deck installed including new posts etc. Despite the early snow in November, John and his team worked tirelessly to complete the job...

Linda, Oakville
John’s team at Mississauga Decks did a great job on our rooftop deck and front stairs. They were reliable and professional. Work was done on time and at a reasonable cost. I would definitely use them again!
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Ilanak, Toronto