What is a Full Structural Inspection? | Montreal Engineering Services

When most people think of a structural inspection, they picture an engineer looking at basement cracks. While the foundation is critical, it’s just one part of a complex, interconnected system that carries the weight of your entire building.

A full structural inspection is a comprehensive evaluation of all major load-bearing components—from the footings in the ground to the framing in the attic. It’s the equivalent of a full-body MRI for your property, providing a complete picture of its skeletal health.

Whether you’re managing a multi-unit building, concerned about mysterious sagging, or planning a major renovation, understanding what this inspection entails is the first step to ensuring long-term safety and stability.

Why a Foundation Inspection Isn’t Always Enough

A foundation-specific inspection answers: “Is the base stable?”

A full structural inspection answers: “Is the entire load-bearing system sound, and is the foundation’s movement affecting the structure above?”

Problems often manifest in one area but originate in another. A crack in a second-floor wall could stem from a misaligned beam in the basement. A sagging roof might be due to undersized rafters, not a foundation issue. Only a holistic inspection can connect these dots.

The 6 Key Areas We Assess in a Full Structural Inspection

1. Foundation & Footings (The Base)

We start where everything rests. Beyond looking for cracks, we assess:

Type and condition (poured concrete, block, stone).

Evidence of ongoing movement (differential settlement, heaving).

Water management and its impact.

2. Beams, Girders & Columns (The Primary Support Network)

These are the heavy lifters, transferring loads from above to the foundation.

Steel I-beams: Check for rust, deflection, and proper bearing on piers.

Wood beams: Look for sagging, cracking, insect damage, or rot (especially near masonry).

Columns (Lally columns, wood posts): Verify they are plumb, properly sized, and have adequate bearing plates at top and bottom. We check for crushing or sinking.

3. Floor Framing & Joists (The Horizontal Plane)

Floors should be level and solid, not bouncy or sloped.

Joist size, spacing, and span: Are they adequate for the loads?

Signs of over-spanning: Excessive deflection (sag), vibration.

Notching or drilling: Have mechanical trades compromised joists by cutting through them improperly?

Connections: Are joists properly anchored to beams and sill plates?

4. Walls & Partitions (The Vertical Enclosure)

Identifying which walls are load-bearing is crucial for any renovation.

Load-bearing vs. non-load-bearing walls: We determine their role in the structure.

Signs of distress: Bowing, leaning, large cracks at corners or above openings.

Impact of past modifications: Were walls removed or altered without proper support?

5. Roof Framing & Attic Structure (The Overhead Shield)

The roof system must carry snow loads (a major Montreal concern), wind, and its own weight.

Rafter/Truss condition: Look for sagging, improper connections, water stains from past leaks.

Collar ties, ridge beams, struts: Are these critical elements present and functioning?

Signs of spreading: Exterior walls pushing outward, often indicated by a sagging ridge.

6. Connections & The Overall "System"

The magic (or the failure) is in the details. We examine how all these pieces are tied together.

Are beams properly seated on columns?

Are sill plates anchored to the foundation?

Is there adequate lateral bracing to resist wind loads?

The Tools & Deliverables: More Than a Look-Over

We don’t just make visual observations. We quantify:

Measurements: We use laser levels and inclinometers to measure deflections, slopes, and out-of-plumb conditions.

Load Calculations: We can perform basic calculations to verify if framing members are adequately sized.

The Engineering Report: The final deliverable is a formal document that includes: A detailed description of the entire structural system, annotated photographs of all relevant conditions, and a clear summary of findings, categorized by severity.

Crucially: Specific, actionable recommendations for repair, reinforcement, or further investigation (e.g., soil testing).

Who Needs a Full Structural Inspection?

Building Managers & Condo Boards: For due diligence before major expenditures or after suspected damage.

Homeowners with "Gut Feelings": Those noticing sagging floors, sticking doors on multiple levels, or cracks throughout the house.

Pre-Renovation Planning: ESSENTIAL before removing walls, adding heavy finishes (stone), or converting attics.

Post-Incident Assessment: After a fire, vehicle impact, or significant water event.

Real Estate Transactions: For high-value or unusual properties where a standard inspection raised red flags.

Case in point: A duplex in Villeray where the owner wanted to open the kitchen. A standard inspection noted it was likely load-bearing. A structural inspection revealed not only was it bearing, but the beam above was already overstressed and sagging slightly. Specs for a new steel beam and proper temporary supports were provided, preventing a potential disaster during construction.

Investing in Certainty

Your building’s structure is its most valuable asset. A full structural inspection provides the authoritative knowledge you need to:

Plan and budget for repairs intelligently.

Proceed with renovations safely and to code.

Protect your investment and its occupants.

Don't wonder about what's behind the walls. Know with certainty.

Our comprehensive structural inspections provide a complete engineering assessment of your property’s load-bearing framework. Gain the clarity and confidence that comes from a professional evaluation of the entire system, not just a single component.

Ready to schedule or have a specific concern? Contact us to discuss your property’s needs.

Beyond the Foundation: What a Full Structural Inspection Covers for Your Home or Building