JJ Constructions Deck & FenceJJ ConstructionsDeck & Fence
Deck Building

Custom Decks, Engineered to Last a Generation

From intimate cedar retreats to expansive multi-level composite decks — we design, permit, and build outdoor living spaces across Ajax, Pickering, Whitby, Markham and the GTA.

Why a JJ deck

A deck isn't a project. It's the room you'll use most for the next 20 years.

Every JJ Deck & Fence build starts with how your family actually lives — morning coffee zones, dinner-party flow, hot-tub privacy, kids' sightlines. We then engineer the structure with code-spec footings, joist hangers and fasteners that outlast the boards on top. The result is a deck that looks custom, performs flawlessly through Ontario winters, and adds real, appraisable value to your home.

  • Increases resale value by 65–80% of project cost (national remodeling reports)
  • Expands usable outdoor living square footage year-round
  • Engineered to Ontario Building Code with permit support
  • Workmanship warranty on every build
Our Decks

Built for outdoor living.

Seven specializations, one craftsmanship standard. Whether you need a quick repair or a 1,200 sq ft multi-level composite build, the same Julien-led crew delivers it.

Custom Deck Design

Architect-grade layouts tailored to your lot, sightlines, sun exposure, and how you actually entertain.

Pressure-Treated Decks

Cost-effective, code-compliant pressure-treated lumber decks with 25+ year structural lifespan.

Western Red Cedar Decks

Naturally rot- and insect-resistant cedar with rich grain and a warm, timeless aesthetic.

Composite & PVC Decks

TimberTech, Trex and Azek decking — fade-resistant, splinter-free, and virtually maintenance-free.

Multi-Level & Wrap-Around

Engineered transitions, integrated stairs, planters and benches for sloped or feature-rich properties.

Pool & Hot Tub Decks

Slip-resistant, code-compliant pool surrounds with proper drainage and barrier-rated railings.

Deck Repair & Resurfacing

Joist reinforcement, board replacement, sanding, staining and full-resurface refreshes.

Composite multi-level deck at twilight
Our Process

From concept to completion.

  1. 01

    Free Consultation

  2. 02

    3D Design

  3. 03

    Material Selection

  4. 04

    Permits & Build

  5. 05

    Final Walkthrough

Choose Your Material

Which decking is right for you?

Tap a material below to compare lifespans, maintenance demands, costs and resale impact — side by side.

The low-maintenance benchmark.

TimberTech, Trex and Azek composite boards are engineered to resist fading, staining, scratching, and mould. No annual staining — just an occasional soap-and-water wash.

Pros

  • Zero annual maintenance
  • Fade & stain warranty (25–30 yr)
  • Splinter-free surface
  • Consistent, factory finish

Cons

  • Higher upfront cost
  • Can feel warm underfoot in summer

At a Glance

Lifespan25–30 yr
MaintenanceVery Low
Upfront Cost$$$
Resale AppealExcellent
Real Transformations

Before & After.

Drag the slider to reveal the transformation. Every build starts with an empty yard and ends with a space you'll love.

Finished composite deck with railing in AjaxAfter
Backyard before composite deck installationBefore

Drag the handle left or right to compare — Composite Deck — Ajax

FAQ

Deck Building Questions

The questions every homeowner asks before signing off.

Free Estimate

Book Your Free Deck Consultation Today

Get a free, no-obligation consultation and estimate from Julien John and the JJ Deck & Fence team.