Can I install vinyl siding on my garage myself in Dieppe NB?

Yes, vinyl siding installation on a garage is one of the more achievable exterior projects for a handy homeowner, and doing it yourself in Dieppe can save you $2,000 to $5,000 in labour costs on a typical two-car garage. That said, proper installation technique matters enormously in New Brunswick's climate — incorrectly installed vinyl siding leads to water infiltration, wind damage, and buckling that can cost more to fix than having it done professionally in the first place.

Vinyl siding materials for a two-car garage in the Dieppe and Greater Moncton area cost approximately $1,500 to $3,000 for the panels, J-channel, starter strip, corner posts, utility trim, and other accessories. This is the material cost only — professional installation would add another $2,500 to $5,000 in labour, so the savings potential for a DIY installation is real. You can purchase materials from Kent Building Supplies, Home Hardware, or building supply dealers in the Dieppe-Moncton corridor.

The tools required are relatively basic: a tape measure, level, chalk line, tin snips or a vinyl siding cutting tool, a snap lock punch, a utility knife, a straight edge, and a hammer or pneumatic nail gun. If you are removing old siding first, you will also need a pry bar and disposal plan for the old material. Most homeowners with basic carpentry skills and comfort working from a stepladder can complete a single-car garage in a weekend and a two-car garage in two to three days.

However, there are critical installation details that separate a professional-quality job from a problematic one, and these are especially important in NB's Maritime climate. The single most common DIY mistake is nailing siding panels too tightly. Vinyl siding must be hung, not fastened rigidly — each nail should be centred in the nailing slot and driven to leave approximately 1/32 inch of play between the nail head and the panel. This allows the vinyl to expand and contract with temperature changes. In Dieppe, where temperatures can swing from -25 degrees Celsius in January to +30 degrees in July, a panel that is nailed tight will buckle and warp visibly during summer heat.

The second critical detail is the weather-resistive barrier (housewrap) underneath the siding. Before any siding goes on, the garage sheathing must be covered with a properly installed housewrap such as Tyvek or Typar, with all seams taped and all window, door, and penetration openings properly flashed. This barrier is your garage's true weather protection — the vinyl siding is the first line of defence against rain, but in wind-driven conditions common in the Moncton-Dieppe corridor, water will get behind the siding. The housewrap catches it and directs it down and out. Skipping or improperly installing this barrier is a mistake that can lead to sheathing rot and mould inside the wall cavity.

Other key installation tips for Dieppe's climate: Leave a 1/4-inch gap at all butt joints and where panels meet trim pieces to allow for thermal expansion. Lock each panel firmly into the one below it — you should hear and feel a click as the bottom lock engages. Overlap panels away from the prevailing wind direction (which is generally from the west and southwest in the Moncton-Dieppe area) so that wind-driven rain does not penetrate the overlaps. And choose a panel thickness of at least 0.044 inches for durability — thinner economy panels are more prone to cracking in NB's cold winters and denting from impact.

If your garage has complex geometry — multiple gable ends, roof-to-wall transitions, window and door trim, or areas where the siding meets different materials — the difficulty increases substantially. Simple rectangular garages with one or two windows and a service door are ideal DIY siding projects. Garages with dormers, bump-outs, or mixed cladding are better left to professionals who can handle the flashing and trim details correctly.

One important note: if your garage project includes new construction or structural modifications, a building permit may be required from the City of Dieppe, and the building inspector will check that the weather barrier and cladding are installed to code. Even for a re-siding project on an existing garage, ensuring code-compliant installation protects your investment and avoids issues at resale. If you would rather have it done right by an experienced installer, New Brunswick Garages can match you with local siding contractors for a free estimate.