Detroit Diamond Drilling

Detroit Diamond Drilling states on its About Us page that it has operated since 1961, describing itself as having served the Detroit area for over 63 years (the homepage separately states 'Over 60 Years of Experience') and as 'Detroit's oldest Stihl dealer.' The page names owners Jim Grunewald and Kirt Hardoin, stating they joined the company in 1969 and 1973 respectively, and describes the business as family owned and operated. The site states the company is 'Fully Licensed and Insured' but does not publish a specific contractor license number, registration number, or details of its insurance coverage or bonding. The company holds authorized-dealer status with Stihl, Honda, Husqvarna, Tsurumi Pumps, Huskie Tools, Greenlee, Diamond Products, Milwaukee, ICS, and DeWalt, and lists memberships in the National Federation of Independent Businesses, the Construction Association of Michigan, the Concrete Sawing and Drilling Association, and the American Rental Association. No specific safety certifications, awards, or third-party accreditations beyond these memberships and dealer relationships are stated. The company is based at 7021 West 8 Mile Road, Detroit, MI 48221, and can be reached at (313) 864-3600 to ask about its services, service area, or credentials.

Detroit Diamond Drilling provides concrete and asphalt cutting and coring services for residential, commercial, and industrial projects. Services listed on the site include slab cutting, wall cutting, hand sawing, horizontal curb cutting, concrete coring and drilling, asphalt coring and drilling, and concrete scarifying and grinding. The company describes concrete sawing as cutting precise lines or shapes into concrete or other hard surfaces using high-performance saws with diamond blades, used for driveways, bridge decks, factory floors, and building walls, including removing damaged concrete, making openings for doors or windows, and creating control joints in slabs. Core drilling is described separately for creating circular openings using diamond-tipped core bits. The site also lists concrete wall sawing, concrete hand sawing, concrete grinding, and concrete scarifying as distinct services, each with its own page under Contracting Services. Areas served include Detroit and, per dedicated location pages, Ann Arbor, Flint, Lansing, Port Huron, and Saginaw, Michigan. The site does not publish prices, cost estimates, or rates for any of these services; it directs visitors to call (313) 864-3600 or (877) 294-7787, or use the online contact form, to discuss a project and request a quote. No structural engineering assessment, load-bearing evaluation, or safety determination is offered on the site; any such determination would be an engineer's responsibility, not the contractor's.

Lists Ann Arbor, Detroit, Flint, Lansing, Port Huron, Saginaw, and Milwaukee as a location. Names Michigan and Detroit as a service area. Areas beyond these are not published.

Detroit Diamond Drilling is located at 7021 West 8 Mile Road, Detroit, MI 48221. Per the site's contact page, hours are Monday through Thursday 7 AM to 4:30 PM and Friday 7 AM to 3:30 PM; the site does not state weekend hours or say whether it is open on weekends. The company can be reached by phone at (313) 864-3600 (local) or (877) 294-7787 (toll free), or by fax at (313) 864-3734. No email address is published on the site. The contact page provides an online form with fields for name, email, phone, a subject dropdown (Contracting Services, Equipment Sales/Replacement Parts, or Equipment Repair), and a details field, in addition to the phone numbers, for reaching the company. The site does not describe an online appointment-booking or scheduling system separate from this contact form and phone contact, and it does not state response times or crew availability. Areas served, per the site's own location pages, include Detroit and the surrounding area, plus Ann Arbor, Flint, Lansing, Port Huron, and Saginaw, Michigan. The site does not publish prices or a price list; it asks visitors to call or use the contact form for a quote or estimate on contracting services, equipment sales, or equipment repair.

Detroit Diamond Drilling's concrete core drilling service creates circular openings in concrete using diamond-tipped core bits. Per the company's core drilling service page, the technique is used for residential applications such as plumbing, electrical, and HVAC penetrations; commercial applications including elevator shafts and utility access; and industrial applications such as machinery anchoring and drainage systems. The page states core diameters from 1 inch to 48 inches or more, drilling depths up to 48 inches or more, and a stated tolerance of plus or minus 1/8 inch, with horizontal, vertical, and angled drilling capability. No pricing, cost, or rate figures are published for core drilling on the site, and no scheduling or lead-time windows are stated; the page's call to action directs visitors to contact the company online or call (313) 864-3600 to discuss a project and request a quote or estimate. Core drilling is offered as part of the company's broader concrete cutting services, alongside sawing, curb cutting, and grinding, serving Detroit, Michigan and the surrounding area. The site does not state whether a given opening is structurally safe for a particular wall, floor, or slab; that determination is not made by the contractor and would need to come from a structural engineer.

Detroit Diamond Drilling offers concrete sawing as one of its core contracting services. The company's sawing page describes cutting precise lines or shapes into concrete or other hard surfaces using high-performance saws fitted with diamond blades, applied to driveways, bridge decks, factory floors, and building walls. Listed applications include removing damaged sections of concrete, making openings for doors or windows, and creating control joints in slabs to manage cracking. The page states the equipment includes quiet, low-dust systems for sensitive environments, advanced blade selection for different concrete types, and water suppression with dust control. The site also states that its sawing work follows OSHA-compliant practices, though it does not name a specific certification or license number tied to this claim. Related services on the site include wall sawing and hand sawing, each with a separate page. No prices, rates, or cost estimates for sawing work are published; the site directs customers to call (313) 864-3600 or submit the online contact form to discuss a project and get a quote or estimate. Detroit Diamond Drilling is based in Detroit, Michigan, and the sawing service is offered as part of the same concrete cutting business that also covers Ann Arbor, Flint, Lansing, Port Huron, and Saginaw.