A masonry assessment report is supposed to help you make decisions. Too often, it doesn't — not because the inspector did poor work, but because the findings are presented in technical language without clear guidance on what they mean for timing, budget, and risk.

Here's how to read one.

What a Masonry Assessment Is

A masonry assessment is a systematic inspection of a building's exterior masonry envelope — typically brick, stone, CMU block, or combination — that documents current condition, identifies deficiencies, and recommends repair scope. Assessments range from basic visual inspections to comprehensive surveys that include probing, sounding (tapping the masonry to detect voids or delamination), moisture readings, and material sampling.

Most commercial property assessments are visual-plus-probe. A qualified inspector physically examines accessible masonry, uses a probe or pick tool to test mortar joint hardness and depth, and may use binoculars or a drone for upper building elevations. Results are documented with photographs and written descriptions, typically organized by building elevation or by deficiency type.

The Key Categories in a Masonry Report

1. Mortar Joint Condition

This is typically the largest section of any masonry assessment, because mortar joints are the primary maintenance item on brick and block buildings.

What the report will say: Descriptions like "mortar joint erosion ranging from ¼" to ½" on the north elevation," "deteriorated mortar joints throughout the upper parapet course," or "open joints at windowsill level." Photographs show the affected areas.

What you need to understand: Joint erosion depth is the key metric. Joints eroded less than ¼" below the brick face are intact for waterproofing purposes — water sheds from the joint face rather than pooling inside the joint. Joints eroded ¼" to ½" are actively admitting water and are the top maintenance priority. Joints eroded more than ½" are allowing significant water infiltration and are approaching the threshold where the underlying masonry may already have moisture damage.

Priority question: Are the deteriorated joints concentrated on specific elevations (north and west are highest priority in Chicagoland, because they receive more wetting and less drying) or scattered across all elevations? Concentrated deterioration allows for phased repair; uniform deterioration across all elevations means a comprehensive scope is needed.

2. Brick and Masonry Unit Condition

Reports will categorize individual brick condition separately from mortar joints.

What the report will say: "Spalling brick faces on the north elevation, concentrated above window openings." "Efflorescence throughout lower courses on east elevation." "Individual brick face cracks adjacent to lintel locations." "Multiple spalled brick at parapet coping course."

What spalling means: Spalling — the delamination of the outer face of a brick — indicates water has entered the masonry and freeze-thaw cycling has caused subsurface expansion. Individual spalled brick can be replaced. Widespread spalling, particularly if associated with hard Portland mortar joints (visible as gray, smooth, more prominent joints in contrast to surrounding material), may indicate mortar incompatibility that needs to be addressed comprehensively.

What efflorescence means: White mineral deposits on the brick face are a water migration indicator. The report should note whether the efflorescence is active (white, powdery, continuing to form) or old (gray, hard, stable). Active efflorescence means water is currently moving through the wall. Finding the entry point is the action item — efflorescence itself can be cleaned, but cleaning without addressing the source accomplishes nothing.

3. Lintel and Structural Element Condition

What the report will say: "Horizontal crack above window opening on south elevation, consistent with lintel corrosion." "Rust staining at lintel level, third and fourth floor windows." "Displaced brick above window opening, approximately ¼" outward from wall plane."

What this means in practice: Lintel-related findings are almost always action items. Once a lintel is actively corroding and causing cracking or displacement, the damage is progressive — it worsens with each moisture and freeze-thaw cycle. "Monitor for further movement" is sometimes appropriate for early cracking, but any findings that include displacement, through-cracking, or rust staining at the surface indicate a replacement scope should be planned within the next 1-2 maintenance cycles.

4. Parapet and Coping Condition

What the report will say: "Open coping joints throughout parapet length." "Coping units displaced at north parapet." "Failed flashing at parapet-to-wall junction." "Mortar erosion throughout parapet courses at maximum rate of erosion on building."

Why parapet findings are urgent: Parapets are the most exposed element on any building — all sides exposed, no overhang, top surface takes direct precipitation, and failures allow water to enter directly into the roof assembly below. A failing parapet can compromise both the building envelope and the roof membrane. Parapet findings rated as significant in an assessment should be treated as high-priority items, not deferred maintenance.

5. Crack Survey

Reports typically include a crack inventory — locations, orientations, widths, and characteristics of visible cracks in the masonry.

Crack orientation matters:

Horizontal cracks in mortar joints above window or door openings → suspect lintel failure
Stair-step diagonal cracks following mortar joints → settlement or thermal movement; may be active or historical (closed)
Vertical cracks through brick and mortar → thermal expansion at control joint locations; often indicates missing or failed expansion joints
Random cracking on a brick face → freeze-thaw spalling pattern; indicates water entry rather than structural movement

What to ask: Is this crack active (widening) or historical (stable and closed)? A crack that is open with no evidence of past repair is usually active. A crack that shows previous repair attempts (sealant, mortar) that have re-opened indicates movement is ongoing.

6. Priority and Urgency Ratings

Good masonry assessment reports include a priority matrix — often a rating of each deficiency as immediate, near-term (1-3 years), or long-term (3-5+ years) action.

Immediate action items typically include: active water infiltration into the building interior, structural cracking with displacement, severely eroded parapet mortar, failed flashing creating direct roof water entry, and any conditions that create a falling hazard (spalled brick on upper elevations, displaced coping).

Near-term items include: mortar erosion beyond ¼" on principal elevations, lintel cracking without yet active displacement, efflorescence indicating active water migration, and parapet joint failures.

Long-term monitoring items include: minor surface cracking in stable condition, minor efflorescence on lower-priority elevations, and cosmetic spalling that does not compromise structural integrity.

Common Report Interpretation Mistakes

Treating all findings as equal urgency. A report with 15 line items doesn't mean 15 equally urgent repairs. Read the priority ratings, and within each priority category, focus first on conditions that allow water entry at height (parapets, lintels, upper elevation mortar) before cosmetic issues at grade.

Skipping the photographs. Report text describes locations and conditions, but the photographs tell you the scale and appearance. A "minor crack" looks very different in a photograph from a 1/16" hairline versus a 3/8" open crack.

Assuming the report scope matches what needs to be repaired. An assessment performed from grade level with binoculars will miss conditions only visible from close inspection at height. If the assessment was not performed from a lift or scaffold, significant upper-elevation findings may be underdocumented. Ask the inspector how upper elevations were assessed.

Using the report for a decade. A masonry assessment documents condition at a point in time. For active-deterioration findings (eroding mortar, active water entry), conditions change over 3-5 years. Reassess before planning major repair scopes if the original assessment is more than 5 years old.

Using the Report to Get Accurate Repair Bids

A solid masonry assessment report should be given to contractors when soliciting repair bids. It provides a common scope definition, which makes bids directly comparable. A contractor who provides a bid without having reviewed the assessment (or inspected the building themselves) is estimating generically — those bids should be treated with skepticism.

Ask each contractor to explicitly state how their bid scope addresses each finding in the priority-1 and priority-2 categories of the assessment. A contractor who can walk through the report finding by finding and explain their repair approach for each item is demonstrating the right level of engagement with the actual building conditions.

Emerald Masonry LLC provides masonry assessments and repair scopes for commercial, residential, and institutional buildings throughout Chicagoland. We provide written documentation of our findings, photograph every deficiency, and deliver repair bids that map directly to the identified conditions.

Contact us online or call (708) 288-1696 to schedule an on-site inspection. We serve property managers, HOAs, churches, and commercial building owners throughout Cook, DuPage, Will, and Kane Counties.

How to Read a Masonry Assessment Report — What Property Owners and Managers Actually Need to Know