Frequently Asked Questions
Answers to the most common chimney and fireplace questions from Chicagoland homeowners. NFPA 211 standards, ASTM C270 mortar specs, and seasonal timing covered.
What do you do?
Delta - Chimney Repair and Services provides chimney and fireplace services across the Chicagoland area, including chimney repair, inspection, cleaning, crown repair, cap repair, flashing repair, fireplace repair, restoration, and maintenance for residential and commercial properties.
Where do you work?
We serve the Chicagoland communities listed on our service area pages, including Park Ridge, Arlington Heights, Chicago, Evanston, Skokie, Des Plaines, Niles, Northbrook, Glenview, Wilmette, Winnetka, Lake Forest, Highland Park, Libertyville, Buffalo Grove, and surrounding areas.
How do I get a quote?
Call us at (847) 685-1043 or fill out our online contact form. We review the request, inspect the relevant conditions, and provide a written estimate before approved work begins.
How often should I have my chimney inspected?
The National Fire Protection Association (NFPA 211) recommends annual chimney inspections. Even if you don't use your fireplace regularly, animals, moisture, and freeze-thaw cycles can cause hidden damage. An annual Level I inspection catches problems before they become expensive or dangerous.
What is the difference between a Level I, II, and III chimney inspection?
A Level I inspection is a visual check of readily accessible components and is recommended annually. Level II adds video camera scanning of the flue interior and is required when selling a home, after a chimney fire, or when changing fuel types. Level III involves partial demolition to access concealed areas and is used when serious structural damage is suspected.
How do I know if my chimney crown needs repair?
Look for visible cracks, missing chunks, or water stains on the chimney exterior below the crown line. A deteriorating crown lets water enter the chimney structure, causing freeze-thaw spalling on the brickwork below. If you see white efflorescence (salt deposits) on chimney bricks, the crown is likely compromised.
Why is water leaking around my chimney?
Common causes include a cracked or missing crown, failed flashing where the chimney meets the roof, and deteriorated mortar joints. All three can allow water into the chimney structure, so the leak source should be inspected before repair work is selected.
What is chimney flashing and why does it fail?
Flashing is the metal (typically aluminum, galvanized steel, or copper) that seals the joint between your chimney and roof. It fails due to thermal expansion/contraction cycles, improper installation, or roof replacement where flashing was not properly integrated. Failed flashing is the number one cause of chimney-related roof leaks.
How much does chimney repair cost in the Chicago area?
Chimney repair cost depends on access, height, damage depth, materials, roof conditions, and whether the repair is isolated or part of a larger water-entry or structural issue. A written estimate should separate the visible problem, recommended repair, and any optional work.
Do you serve all of Chicagoland?
We serve the entire North Shore, Lake County, and northwest suburbs including Evanston, Skokie, Des Plaines, Park Ridge, Niles, Chicago, Northbrook, Glenview, Wilmette, Winnetka, Lake Forest, Highland Park, Libertyville, Arlington Heights, and surrounding communities.