A great deck turns a Toronto backyard into a true living space. Our climate throws salt, freeze‑thaw, and summer heat at exterior materials, so picking the right structure, surface, and details matters. Whether you are replacing an aging platform, adding a rooftop terrace, or carving out a private nook in a narrow semi, this guide covers the choices that deliver a long-lasting, low-maintenance outdoor space.

Material Showdown: Pressure‑Treated, Cedar, Composite, and PVC

Pressure‑treated lumber

• Pros: Most budget-friendly, easy to source, can be stained later.
• Consider: Requires regular sealing, can check and warp, and colour variation. Great for structures and budget surfaces.

Cedar

• Pros: Naturally rot-resistant, lighter weight, warm tone.
• Consider: Still needs finishing to maintain colour, softer surface can dent, plan for annual care.

Composite

• Pros: Low maintenance, consistent colour, hidden fasteners for a clean look, and many profiles.
• Consider: Needs correct joist spacing, can heat up in full sun, higher upfront cost.

PVC decking

• Pros: Light, highly stain-resistant, excellent water resistance for docks or rooftop terraces.
• Consider: Premium price, must follow the manufacturer’s fastening and expansion rules.

How we decide: We match material to sun exposure, shade, snow load, and how much time you want to spend on maintenance. For most Toronto families who want to relax, not refinish, composite or PVC wins for surfaces, while pressure‑treated remains best for concealed framing.

Structure First: Footings, Ledgers, and Framing

• Footings that last: Helical piles or properly sized concrete piers transfer loads below frost. Helicals install fast with minimal digging and are great where access is tight.
• Ledger to house: We flash the ledgers meticulously to keep water out of the building envelope. In brick, we use proper anchors and maintain air gaps. In stucco or siding, we integrate flashing with the WRB.
• Joist layout: Composites often require 12 in on center for diagonals or high traffic zones. We follow the brand’s span chart to avoid bounce.
• Rooftop and balcony decks: We use sleeper systems over membrane roofs with protection layers and respect drainage paths. No penetrations without the roofer’s sign‑off.

Drainage, Waterproofing, and Freeze‑Thaw

• Keep deck boards gapped per spec so water sheds.
• Where you want dry storage below, we add an under‑deck drainage system with a gutter to move water away from the house.
• All cut ends on PT get end‑cut preservative.
• Balcony decks over living space get a roof‑grade membrane or traffic coating with proper edge metal and scuppers. We coordinate with your roofer for warranty.

Railings, Stairs, and Safety

• Rail types: Aluminum picket for durability, glass for views, composite and wood for a warmer look. We design posts and blocking to suit the system.
• Stairs: We build comfortable rise and run, add closed risers where animals might nest, and include grippy treads for winter.
• Lighting: Step lights, post caps, and recessed wall lights improve safety and ambiance.

Local codes dictate railing heights, guard loads, and stair geometry. We size, anchor, and submit drawings so your project passes inspections the first time.

Privacy, Shade, and Wind

Small Toronto lots benefit from thoughtful screening and shade.

• Privacy screens: Slatted wood, decorative metal, or frosted glass anchored to the proper structure. We confirm placement relative to property lines and utilities.
• Pergolas and shade sails: Add sun control without losing sky view. We integrate posts with footings and design for snow and wind.
• Planters and green walls: Planter boxes double as edge guards and soften sound.

Power, Gas, and Audio

• Outlets with in‑use covers for chargers, speakers, and heaters.
• Low-voltage lighting on a transformer with a timer or smart control.
• Gas lines for BBQs or fire features must be planned early and installed by a licensed pro.
• Conduit routes: We rough in spare conduits for future speakers or hot tub controls so you do not open finishes later.

Urban Backyards and Narrow Semis: Make Every Inch Work

• Multi‑level decks create zones for dining, lounging, and a grill platform without crowding.
• Built‑in benches save space versus bulky furniture and double as guard edges.
• Storage under stairs or a hinged bench keeps cushions and tools out of sight.
• Pathways: We align deck edges with pavers or turf so circulation feels natural.

Condo balconies have different rules. Many boards restrict finishes and fasteners. We can refresh with interlocking deck tiles, slim planters, and lighting that does not penetrate slabs.

Budget Tiers To Plan Around

Good
PT framing with PT or cedar surface, aluminum picket railing, one set of stairs, and a small landing.

Better
Composite surface with hidden fasteners, aluminum or glass rail, integrated step lighting, and an under‑deck drainage kit over a patio.

Best
PVC or premium composite surface, helical piles, privacy screens, pergola, smart lighting, gas BBQ rough in, and custom planters and benches.

Permits, Surveys, and Utilities

Decks often need permits depending on height, size, and how close they are to property lines. We handle drawings, submissions, and inspections. Before digging, we call for utility locates and verify surveys so footings and posts land where they should.

Our Process at JG Contracting

1. Site visit and concept to map sun, wind, sightlines, and neighbour privacy.
2. Material and structure selection matched to budget and maintenance goals.
3. Permits and engineering where required.
4. Build with clean protection, accurate framing, and precise detailing.
5. Final walkthrough with care tips for your chosen materials.

Related reading on our blog

• Windows That Work in Toronto 2025
• Flooring That Survives Toronto 2025
• Load‑Bearing Wall Removal Guide 2025

Ready To Build Your Outdoor Room?

From compact city decks to rooftop terraces, we design and build outdoor spaces that stand up to Toronto weather and daily life.

Ready to transform your home? Contact us today to book a consultation.

📞 Call us at: 437-259-9632

✉️ Email us at: jgcontractingyyz@gmail.com

🌐 Website: https://jgcontractingyyz.com