Limbach : General Investor Presentation - August 10th, 2023

NASDAQ: LMB

INVESTOR PRESENTATION

August 2023

Forward Looking Statements

We make forward-looking statements in this presentation within the meaning of the Private Securities Litigation Reform Act of 1995. These forward- looking statements relate to expectations or forecasts for future events, including, without limitation, the execution of the Company's long-term strategic

roadmap and Limbach 3.0. These statements may be preceded by, followed by or include the words "may," "might," "will," "will likely result," "should,"

"estimate," "plan," "project," "forecast," "intend," "expect," "anticipate," "believe," "seek," "continue," "target, " "scenario" or similar expressions. These forward-looking statements are based on information available to us as of the date they were made and involve a number of risks and uncertainties which may cause them to turn out to be wrong. Some of these risks and uncertainties may in the future be amplified by the COVID-19 outbreak and there may be additional risks that we consider immaterial, or which are unknown. Accordingly, forward-looking statements should not be relied upon as representing our views as of any subsequent date, and we do not undertake any obligation to update forward-looking statements to reflect events or circumstances after the date they were made, whether as a result of new information, future events or otherwise, except as may be required under applicable securities laws. As a result of a number of known and unknown risks and uncertainties, our actual results or performance may be materially different from those expressed or implied by these forward-looking statements. Please refer to our most recent annual report on Form 10- K, as well as our subsequent filings on Form 10-Q and Form 8-K, which are available on the SEC's website (www.sec.gov), for a full discussion of the risks and other factors that may impact any forward-looking statements in this presentation.

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Carving Our Own Unique Path in the Industry

We pride ourselves on what sets us apart - our dedicated team, disciplined approach, and unwavering commitment to our mission-critical clients. While others in our industry may be focused on changing skylines, our purpose and expertise lie in improving and optimizing existing buildings.

COMMITTED PEOPLE

Team made up of Engineering and Craft Expertise Who Take

Pride in Solving Our Customer's Toughest Challenges

DISCIPLINED APPROACH

To Our Proven Processes and Carving Our Own Unique Path

to Best Serve Our Employees, Customers, & Investors

TRUSTED PARTNER

Our Clients' One-Stop-Shop to Deliver, Maintain &

Optimize Mission-Critical MEP Systems

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Limbach Combines Best-in-Class Attributes of Key Verticals

While our market has numerous competitors, Limbach has combined the best aspects of each in this space, enabling us to be the one-stop-shop

for building owners to maximize their investment of their mission-critical assets.

Example of Firms:	Typical	Custom Engineered	Craft/Field	Equipment/	Vertical Market
Clients:	Solutions:	Expertise:	Platform Agnostic:	Discipline:

Specialty		GC/CM
Contractors
Consulting &
Engineering		Building Owners
Firms
OEM Firms		Building Owners
	Specialty Contractors
Property		Building Owners
Managers
Full-Life Cycle		Building Owners
Capability Firm		GC/CM

GC = General Contractor
CM = Construction Manager	4

Increased Margins Expected to Lead to a Better Multiple1

Higher multiples

Lower margins

Who We Were:Compared to

Multiples & Margins of Specialty

Contractors

Lower multiples

1. For demonstrational purposes only. Data sourced from FactSet as of August 3, 2023 for the TTM period ending June 30, 2023.

Evolved Model: Compared to

Multiples & Margins of

Engineering/OEM Firms

Our Goal

Higher margins

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