Mr. Ali Mahdavi reports

DOMAN BUILDING MATERIALS GROUP LTD. TO ISSUE SECOND QUARTER 2023 FINANCIAL RESULTS AUGUST 3, 2023

Doman Building Materials Group Ltd. will report its second quarter 2023 financial results for the period ended June 30, 2023, after market hours on Thursday, Aug. 3, 2023.

The company will host an analyst call on Friday, Aug. 4, 2023, at 10 a.m. ET. Amar Doman, chairman of the board and chief executive officer, and James Code, chief financial officer, will discuss the company's financial performance for the period ended June 30, 2023.

To access the call, please dial 1-877-407-3982 or 1-201-493-6780. To join the conference call without operator assistance, you may register and enter your phone number on-line to receive an instant automated callback. A replay of the conference call will be available from 1 p.m. ET on Aug. 4, 2023, until 11:59 p.m. ET on Aug. 18, 2023. To access the replay, call 1-844-512-2921 or 1-412-317-6671, followed by passcode 13740029.

About Doman Building Materials Group Ltd.

Doman is headquartered in Vancouver, B.C., trades on the Toronto Stock Exchange under the symbol DBM, is a leading North American distributor of building materials, and is Canada's only fully integrated national distributor in the building materials and related products sector. Doman operates several distinct divisions: CanWel Building Materials, with multiple treating plant, planing facilities and distribution centres coast-to-coast in all major cities and strategic locations across Canada; founded in 1959, Hixson Lumber Company in the central United States, with 19 treating plants, two specialty planing mills and five specialty sawmills located in eight states, headquartered in Dallas, Tex., distributing, producing and treating lumber, fencing and building materials; California Cascade in the Western United States near Portland, Ore., and San Francisco and Los Angeles, Calif., with treating facilities and distribution of building materials, lumber and renovation products; founded in 1935, the Honsador Building Products Group in 14 locations in the state of Hawaii, with treating facilities, truss plants, and distribution of a wide range of building materials, lumber, renovation and electrical products. The company's operations also include timber ownership and management of private timberlands and forest licences, and agricultural postpeeling and pressure treating through its fibre division. Please see the company's filings on SEDAR for additional information.