Pick a licensed, insured mason with relevant experience, a clear written contract, and references you can verify yourself.
The short answer
Start with licensed and insured masonry contractors who regularly do the kind of work you need. Repointing old brick with lime-based mortar is different from installing segmental retaining-wall block, rebuilding a chimney crown, or repairing a leaking wall with flashing and weep holes.
Get at least two or three written estimates and compare the details, not just the total. A strong estimate explains the scope, materials, prep, cleanup, timeline, and what happens if hidden damage is found after work begins.
Ask direct questions about experience, crew supervision, permits if needed, and how they handle common masonry issues like spalling brick, cracked mortar joints, efflorescence, loose lintels, or failed sealant around masonry openings. If answers are vague, rushed, or inconsistent, keep looking.
Stoneform is a free education and matching service. We help homeowners understand the project and connect with vetted local masonry specialists, but we do not perform work or give construction, structural, engineering, or legal advice. You can get matched and still verify every credential yourself.
What to look for
First, confirm the basics. The contractor should be licensed if your state or local area requires it, carry general liability insurance, and ideally have workers' compensation coverage for their crew. Ask for the business name exactly as registered, then verify the license status and insurance yourself. A professional should not be offended by that.
Next, look for job-specific experience. Masonry is broad. Someone who mostly pours concrete flatwork may not be the best fit for historic brick repointing. Someone who builds new block walls may not be the best choice for chimney flashing repairs. Ask for photos of similar jobs and references from recent customers with work like yours.
A good contractor should also talk clearly about materials and methods. For example, proper repointing usually means removing deteriorated mortar joints to the right depth, matching mortar as closely as practical, and avoiding mortar that is harder than the brick. For water problems, they should discuss likely causes such as failed flashing, missing weep holes, open joints, or chimney crown cracks instead of promising that a coating alone will solve everything.
Their written proposal should be specific. Look for:
- Exact work area and scope
- Materials to be used
- Joint style or finish if relevant
- Whether damaged brick or stone will be replaced
- Cleanup and debris removal
- Start window and estimated duration
- Permit responsibility if applicable
- Payment schedule tied to progress, not vague demands
- Warranty terms in writing
Finally, pay attention to communication. The right mason returns calls, shows up on time, answers questions in plain English, and explains what is necessary versus optional. If English is not your first language, ask them to slow down, write key points in the estimate, and confirm who your day-to-day contact will be. Clear communication matters just as much as workmanship.
If you want help finding the right type of pro, Stoneform can help you compare specialists for projects like repointing and tuckpointing, chimney work, retaining walls, and other masonry services.
Common mistakes
The biggest mistake is choosing only by price. A very low bid may leave out important steps like grinding or raking out mortar joints to proper depth, replacing flashing, rebuilding unstable sections, or cleaning up properly. Some low prices also depend on change orders later, after the job has already started.
Another common mistake is accepting a handshake deal or a one-line estimate. If the contract does not say what brick, block, stone, mortar, sealant, flashing, or reinforcement is included, you may not get the work you thought you were buying. Verbal promises are hard to enforce and easy to misunderstand.
Homeowners also get into trouble by hiring someone without checking credentials. A truck, ladder, and social media page do not prove a business is licensed or insured. You should verify the business identity, license status where required, and active insurance directly. Ask who will actually be on site. Some companies sell the job and then send an unknown subcontractor.
Be careful with broad promises like "waterproof forever," "no need to replace damaged brick," or "we can seal over that crack and it will be fine." Masonry problems often have multiple causes. Efflorescence, interior dampness, or cracking around windows can be symptoms of drainage, movement, or flashing issues, not just surface problems.
It is also a mistake to ignore warning signs during the sales process. Red flags include:
- Pressure to sign immediately
- Large cash-only deposits
- Refusal to provide proof of insurance
- No physical business information
- Unwillingness to explain materials or methods
- Suggesting unnecessary full replacement without a clear reason
- Bids that are dramatically lower or higher with no explanation
Last, do not assume every crack is cosmetic or every wall is safe to leave alone. Stoneform does not diagnose structural conditions, but if masonry is bulging, leaning, separating, dropping bricks, or showing major step cracks, you should treat it as urgent and seek an in-person evaluation from a qualified professional.
Next steps
Start by defining the problem in simple terms. Write down what you see, where it is, and when it happens. Examples: "mortar joints crumbling on south wall," "white powder on basement block after rain," "chimney crown cracked," or "brick above garage opening sagging near lintel." Take clear photos in daylight.
Then gather and compare written estimates. Ask each contractor the same core questions so you can compare apples to apples:
1. Have you done this exact type of masonry repair before?
2. What is causing the problem, and what work do you recommend?
3. What materials will you use?
4. Will you replace damaged brick, stone, flashing, lintels, or weep components if needed?
5. Who will supervise the crew?
6. Are permits needed, and who handles them?
7. What is the payment schedule?
8. What warranty is included in writing?
Before signing, make sure the contract includes the company name, contact information, detailed scope, materials, estimated schedule, cleanup, change-order process, total price, payment terms, and warranty language. Typical masonry costs vary a lot by access, wall height, material match, and hidden damage, so use ranges as planning tools, not promises. You can review typical ranges on our costs page.
If you want a simpler path, Stoneform can help you get matched with vetted local masonry specialists. Our service is free for homeowners. We help you understand the job and compare options, but you should still verify licenses, insurance, references, and contract details yourself before hiring.