Hiring a masonry contractor is not like hiring a painter or a landscaper. Masonry work is structural. Done wrong, it causes damage that compounds for years before becoming visible: water infiltration through improperly matched mortar, brick spalling from incorrect mortar type, chimney failure from shallow joint removal. By the time you see the symptoms, the repair cost has multiplied.
Illinois has contractor registration requirements at the municipal level, but registration alone does not guarantee quality. This guide covers everything you need to evaluate and select a masonry contractor who will do the work right.
Step 1: Verify Licensing and Registration
Illinois does not license masonry contractors at the state level. The Illinois Department of Financial and Professional Regulation (IDFPR) covers trades such as roofers, architects, structural engineers, and professional engineers, but masonry contractors are not on that list. Masonry licensing and registration happens at the municipal and county level, and requirements vary across the Chicagoland area.
What to Check
- City of Chicago. Chicago requires a contractor license for work performed within city limits. Verify any contractor working in Chicago holds a current city license.
- Suburban municipalities. Most North Shore and northwest suburb villages require contractors to register with the village before pulling a permit. Lake Forest, Winnetka, Highland Park, Glenview, and Northbrook each maintain their own contractor registration. Ask which villages your contractor is currently registered in.
- County registrations. Cook County and Lake County maintain contractor registrations for unincorporated areas and certain shared services.
- Trade memberships. Mason Contractors Association of America (MCAA) membership and Brick Industry Association involvement indicate ongoing engagement with the trade and access to current technical guidance on mortar standards and best practices.
Red Flags
- “We don’t need any license or registration for this work.” In Chicago that is generally false. In most suburbs, contractors still need village registration to pull permits.
- Unable or unwilling to provide license or registration numbers when asked. Proceed no further.
- Working without permits when permits are required. Structural masonry, lintel replacement, and most chimney work typically require permits; rules vary by municipality.
- No certificate of insurance. Every legitimate masonry contractor carries general liability coverage and can issue a certificate naming the homeowner on request.
Step 2: Confirm Insurance Coverage
Masonry work involves heavy materials, power tools, scaffolding, and work at height. Without proper insurance, you are financially liable for any injury or property damage that occurs during the project.
Required Insurance
General liability insurance covers property damage and bodily injury. The minimum acceptable coverage for residential masonry work is $1,000,000. For larger projects or commercial work, $2,000,000 is standard. Delta - Masonry and Tuckpointing carries $2M in general liability coverage.
Workers’ compensation insurance covers injuries to the contractor’s employees while on your property. In Illinois, workers’ compensation is mandatory for businesses with employees. If a contractor’s employee is injured on your property and the contractor does not carry workers’ comp, you may be held liable.
How to Verify
Ask for a Certificate of Insurance (COI) and verify that it is current. You can also call the insurance company directly to confirm the policy is active. The COI should name the specific policy numbers and coverage amounts. A photocopy of a card is not sufficient. COIs are standardized ACORD form documents that include the insurance company contact information for verification.
Red Flags
- “I’m a one-man operation, I don’t need workers’ comp.” If they hire any helpers, subcontractors, or laborers, workers’ comp is required. If they truly work solo, they should carry general liability at minimum.
- Insurance certificate is expired. Coverage lapses happen. Verify before signing.
- Refuses to provide proof of insurance. Walk away.
Step 3: Ask the Right Questions About Mortar and Process
The questions you ask during the estimate process reveal whether the contractor understands the technical requirements of your specific project. Here are the questions that separate professionals from amateurs.
About Mortar
“What mortar type will you use, and why?”
A professional will ask about or assess your brick before answering. The correct answer depends on your brick type, the application (above-grade vs. below-grade), and the age of the structure. If the contractor answers “Type S” for above-grade residential walls without any assessment, they are using the wrong mortar. On standard residential brick, Type N (minimum compressive strength 750 PSI) is the correct above-grade choice. Type S (minimum 1,800 PSI) is for below-grade and retaining wall applications. If the contractor cannot explain the difference between Type N, Type S, and Type O mortar, they lack fundamental masonry knowledge.
On Lake Forest estates and other historic North Shore properties built before 1920, the answer should involve lime mortar or a lime-dominant blend. NPS Preservation Brief 2 is the federal standard here: using Portland cement mortar on soft historic brick does not protect the wall, it destroys it over time by concentrating stress in the brick units. A contractor who quotes Type S on a 1910 Lake Forest estate is demonstrating they have not assessed the brick.
For more on this topic, see our guide on mortar types and why they matter.
“How will you match the mortar color?”
The answer should involve examining the existing mortar, potentially extracting a sample, selecting appropriate sand and cement, and applying a test patch before proceeding with the full project. “We’ll get it close” or “it’ll weather to match” are not acceptable answers.
Read more about mortar color matching in tuckpointing.
About Process
“How deep will you remove the old mortar?”
The industry standard minimum is 3/4 inch, per BIA Technical Note 7B. That depth is not arbitrary. It provides enough surface area for the fresh mortar to bond mechanically to both brick faces. Anything less than 3/4 inch does not provide adequate bond depth and will result in premature failure. Some contractors grind to only 1/4 or 1/2 inch to save time. This produces a thin veneer of new mortar that fails within 2 to 5 years.
“Will you use a grinder or hand tools?”
Both are acceptable depending on the situation. Power grinders with diamond blades are efficient for standard residential work. Hand tools (cold chisels, raking tools) are preferred for historic homes with soft, handmade brick where a grinder can damage the brick edges. The correct answer depends on your home’s age and brick type. A contractor who only uses one method may not be equipped for your specific situation.
On Highland Park homes from the 1920s to 1940s, where mid-century Portland cement repairs are common on top of original soft brick, hand chisels are often the only safe removal tool near the joint edges. A grinder that takes out incorrect Portland cement can also nick the soft brick face underneath it.
“How will you handle the joints that are near windows, doors, and trim?”
Detail work around transitions is where quality differences become most visible. The contractor should describe how they will protect adjacent surfaces, maintain consistent joint depth at transitions, and handle mortar that meets other materials such as flashing, caulking, and wood trim.
About Business
“Can you provide three references for similar projects?”
Similar means similar scope, similar brick type, and similar location. A contractor who has done excellent work on new construction may not have the skills for historic restoration. A contractor whose references are all in Indiana may not understand the specific challenges of Illinois freeze-thaw conditions.
“What is your warranty?”
Professional masonry contractors stand behind their work. A warranty should be written, should specify what is covered (materials, labor, or both), and should specify the duration. Verbal warranties are unenforceable.
“When can you start, and how long will it take?”
A contractor who can “start tomorrow” on a large project may not have other work, which raises questions. A contractor who is booked 6 months out has demand for a reason. Reasonable lead times for quality contractors in the Chicagoland area are 2 to 6 weeks during peak season (May through October).
Step 4: Evaluate the Written Estimate
The written estimate tells you as much about the contractor as the interview. Here is what a professional estimate should contain and what its absence signals.
What a Good Estimate Contains
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Scope of work: Exactly which walls, elevations, or sections will be repaired. “Tuckpointing as needed” is not a scope. The estimate should identify specific areas, ideally with reference to sides of the building or marked on a photo.
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Mortar specification: The mortar type to be used (Type N, Type S, Type O, lime blend) and the color-matching approach.
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Joint depth: The minimum depth of mortar removal stated as a specification, not implied. BIA Technical Note 7B sets this minimum at 3/4 inch.
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Access method: Whether the work will be done from ladders, scaffolding, or a lift. This affects cost and should be explicit.
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Brick replacement: If any bricks need to be replaced, the estimate should note the quantity, the matching approach, and the cost, separately from the tuckpointing line item.
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Timeline: Start date and estimated completion date.
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Payment terms: A reasonable deposit is 10 to 30 percent with the balance due upon completion. A contractor who demands 50 percent or more up front before any work begins is a higher risk.
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Warranty: Written warranty terms, duration, and what is covered.
Red Flags in Estimates
- No line-item breakdown: A single number with no detail makes it impossible to compare bids or understand what you are paying for.
- “Per the inspection” without detail: The estimate should stand on its own as a document.
- Cash discount: Contractors who offer significant discounts for cash payment may be avoiding tax obligations.
- No warranty mentioned: If the warranty is not in the estimate, it does not exist.
- Dramatically lower than other bids: If one bid is 40 percent below the others, the contractor is either cutting corners (shallow grinding, wrong mortar, no color matching), underestimating the scope, or not including the same work items. Ask specifically what they are doing differently.
Step 5: Verify Their Work in the Field
Before signing, verify the contractor’s quality through direct observation.
Drive Past Completed Projects
Ask for addresses of completed projects and drive by. You are looking for: consistent mortar color (no patchwork appearance), consistent joint profiles, clean brick surfaces with no mortar smears, and work that blends with the original masonry. In Winnetka and Glenview, tuckpointing work that disrupts the visual continuity of the facade is visible from the street and an immediate signal of poor color matching.
Online and Reference Verification
Check Google reviews, Yelp, and BBB. Look for patterns, not individual reviews. A contractor with 50 reviews and a 4.8 average is more reliable than one with 3 reviews and a 5.0. Pay attention to negative reviews specifically for workmanship issues, communication problems, or pricing disputes.
Who Is Actually Doing the Work
Ask who will perform the work. Some contractors sell the job and subcontract the labor. This is not automatically bad, but you should know who will be on your property and whether the contractor will be on-site to supervise.
Common Scams and How to Avoid Them
The Door-Knocker
A truck with out-of-state plates shows up uninvited and offers a deal because “we’re doing work on your neighbor’s house and have leftover materials.” This is almost always a scam. The work will be low quality, the contractor will be impossible to reach for warranty claims, and the “leftover materials” are standard supplies available at any masonry supply house. Northbrook and Glenview homeowners report this pattern every spring as crews move through the suburbs.
The Lowball and Upcharge
A contractor provides an unrealistically low bid to win the contract, then discovers “additional work needed” once they have started. Each discovery comes with an additional charge. Prevention: a detailed scope in the estimate and a clause requiring written approval for any changes.
The Material Switch
The estimate specifies Type N mortar and color-matched sand. The actual work uses whatever is cheapest. Prevention: ask the contractor to show you the mortar bags and sand before they mix, and compare against the specification in the estimate.
Seal Coating Pressure
After completing tuckpointing, the contractor urgently recommends sealing the entire wall with a “protective coating.” Film-forming sealers can trap moisture inside brick and actually accelerate spalling. Breathable sealers have limited applications. Any sealer recommendation should come with a clear explanation of the specific product, why it is appropriate for your specific brick, and what happens if the sealer traps moisture.
Cost Transparency: Reading a Bid Against Market Pricing
A bid you cannot evaluate against honest market pricing is a bid you cannot evaluate. Four companion guides give you the cost ranges and the variables that move the price:
- Tuckpointing cost in Illinois 2026: $8 to $25 per linear foot for residential tuckpointing, with the four variables that move price within that range.
- Brick repair cost in Chicagoland 2026: individual brick replacement at $50 to $150 per brick in the Chicagoland market, section repair (10 to 30 bricks) at $500 to $2,000.
- Chimney tuckpointing cost in Illinois 2026: chimney tuckpointing (all four sides) $800 to $2,500, crown repair or cap replacement $200 to $600, partial rebuild (top half) $3,000 to $6,000.
- DIY tuckpointing vs professional: why a $200 savings in materials often costs thousands in remediation within five years, including the silica dust hazard that governs mortar grinding.
Making Your Decision
The cheapest bid is rarely the best value in masonry work. A tuckpointing job done correctly lasts 25 to 50 years. A tuckpointing job done poorly may last 3 to 5 years and cause additional brick damage in the process. The cost difference between the two is typically 15 to 30 percent at the time of the estimate, but the lifetime cost of the cheap job is 3 to 5 times higher when you include the rework and the damage it caused.
Choose a licensed, insured contractor who demonstrates knowledge of mortar types, color matching, and joint depth requirements. Get a detailed written estimate. Verify their work on completed projects. And do not let price alone drive your decision.
Get a Free Estimate From a Licensed, Insured Chicagoland Contractor
Delta - Masonry and Tuckpointing has been serving Chicagoland since 1987. We carry $2M in general liability coverage and work across the North Shore and northwest suburbs, including Lake Forest, Winnetka, Highland Park, Glenview, and Northbrook.
Call (847) 713-1648 or request a free estimate online. Every project starts with a free on-site inspection and a detailed written estimate covering mortar type, joint depth, and access method, with no pressure and no obligation.
A contractor who cannot tell you the mortar type they will use, in writing, is a contractor who is guessing.