Installed Building Products, Inc.

Evaluation of Disclosure Controls and Procedures

We conducted an evaluation of our disclosure controls and procedures (as defined in Rule 13a-15(e) under the Exchange Act) as of December 31, 2025 with the participation of the Company’s principal executive officer and principal financial officer as required by Exchange Act Rule 13a-15(b). Based on that evaluation, the Company’s principal executive officer and principal financial officer concluded that, as of December 31, 2025, our disclosure controls and procedures were effective to ensure that information required to be disclosed in the reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported, within the time periods specified in the SEC’s rules and forms, and includes, without limitation, controls and procedures designed to ensure that information required to be disclosed by us in the reports we file or submit under the Exchange Act is accumulated and communicated to our management, including our principal executive officer and our principal financial officer, or persons performing similar functions, as appropriate to allow timely decisions regarding required disclosure.

Management’s Report on Internal Control over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting (as defined in Rule 13a-15(f) under the Exchange Act). Our internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with accounting principles generally accepted in the United States of America.

Management, under the supervision of the principal executive officer and the principal financial officer, assessed the effectiveness of our internal control over financial reporting, excluding the internal control over financial reporting at the subsidiaries listed below that we acquired during 2025 as of December 31, 2025 using the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) in Internal Control – Integrated Framework (2013). The scope of management’s assessment of the effectiveness of internal control over financial reporting as of December 31, 2025 includes all of the Company’s subsidiaries except the subsidiaries listed below, which were acquired during 2025 and whose financial statements constitute the percentages of total assets and net revenue listed below of the consolidated financial statements of the Company as of and for the year ended December 31, 2025:

Management excluded the internal control over financial reporting at these subsidiaries from its assessment in accordance with the guidance of the staff of the SEC that an assessment of a recently acquired business may be omitted from the scope of management’s assessment of internal control over financial reporting for one year following the acquisition.

Based on this assessment, management has determined that our internal control over financial reporting was effective as of December 31, 2025.

The effectiveness of our internal control over financial reporting as of December 31, 2025, has been audited by Deloitte & Touche LLP, an independent registered public accounting firm, as stated in their report, which follows below.

Changes in Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting identified in management’s evaluation pursuant to Rules 13a-15(d) or 15d-15(d) of the Exchange Act during the quarter ended December 31, 2025 that has materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.