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Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement Nos. 333-255439 and 333-271646 on Form S-8 of our report dated March 4, 2026, relating to the financial statements of Latham Group, Inc. and subsidiaries (the “Company”) appearing in this Annual Report on Form 10-K for the year ended December 31, 2025.

/s/ Deloitte & Touche LLP

Hartford, Connecticut

March 4, 2026