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5 min readExterior Siding

How to spot ahigh-quality vinyl siding installation

A siding contractor's guide to understanding the essential steps of professional vinyl siding installation.

A solid siding contractor in Gatineau follows a clear sequence: sound wall prep, membranes and flashing, a ventilated cavity, and clean finishing. Here's how Benex Home delivers durable results.

1. Wall prep and membranes

The foundation of lasting installation

Flat, sound sheathing, sealed air barrier (taped seams), and base/head flashings to drive water out. This foundation prevents water infiltration behind the cladding.

2. Ventilated rainscreen (strapping)

Vertical strapping creates a drainage and drying cavity. Walls breathe, moisture exits, and siding lasts longer. This is one of the most overlooked yet critical steps.

🌬️ Why ventilation matters

The strapping creates space between the air barrier and siding, allowing:

  • • Accumulated moisture to escape
  • • Air circulation for rapid drying
  • • Reduced mould risk
  • • Extended siding lifespan

3. Setting the vinyl

1

Perfectly straight starter strip

The first course determines alignment for everything above. Laser level ensures precision.

2

Nails centered in slots

Never overdriven to allow expansion/contraction. Improper nailing causes waviness.

3

Course alignment checked

Constant monitoring to avoid wave effect visible from a distance.

4. Openings, corners, finishing

🪟

Windows

Head flashing, clean J-trim, expansion gap provided

📐

Corners

Aligned inside/outside corners, minimal joints

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Sealant

Clean and discreet, only where necessary

5. Final quality check

  • Straight, uniform lines across entire facade
  • Consistent joints staggered between courses
  • No unnecessary visible fasteners
  • Impeccable finishing around all openings

Why Benex Home?

Our quality commitment

Local expertise

Over 11 years experience in vinyl siding installation and other cladding in the Gatineau-Ottawa region.

Quality materials

Certified partners with Gentek, Maibec, and James Hardie for durable products.

Standards compliance

Strictly follow manufacturer specs and Quebec building code.

Fast service

Quote usually within 24 hours and clear communication throughout the project.

Frequently asked questions

What makes a vinyl siding job high quality?+

Proper air barrier, flashing, ventilated rainscreen (strapping), straight starter, centered nails (not overdriven), clean trims around windows/doors, and adequate ventilation.

Do I need a ventilated cavity behind vinyl siding?+

Highly recommended. It lets walls dry, drains incidental moisture, and extends siding life while reducing mould risk.

Why is flashing above windows important?+

Flashing sheds water to the exterior. Without it (and proper membranes), water ingress becomes more likely.

Need expert eyes?

Our team is ready to evaluate your project and provide a detailed quote within 24 hours.