Owens Corning : Q4 2021 Roadshow and Conference Presentations

Q4 2021

This presentation shared at the following event:

FOCUSED ON SHAREHOLDER VALUE

11/17/21	OC (Virtual) Roadshow Hosted by Evercore ISI	Ken Parks, Chief Financial Officer

FOCUSED ON SHAREHOLDER VALUE

INVESTOR (VIRTUAL) VISITS HOSTED BY EVERCORE

Ken Parks | Chief Financial Officer Amber Wohlfarth | Director, Investor Relations

November 17, 2021

FORWARD-LOOKING STATEMENTS AND NON-GAAP MEASURES

This presentation and the associated remarks contain forward-looking statements. We caution you against relying on these statements as they involve risks and uncertainties that are difficult to predict and the Company's actual results may differ materially from those projected. Such risks and uncertainties include, without limitation: the severity and duration of the current COVID-19 pandemic on our operations, customers and suppliers, as well as related governmental actions; levels of residential, commercial and industrial construction activity; global industrial production; competitive and pricing factors; demand for our products and relationships with key customers; raw material and other input availability, issues related to acquisitions, divestitures, joint ventures or expansions; industry, economic and political conditions, including new legislation, policies or other governmental actions in the U.S. or elsewhere; climate change, weather and storm activity; changes to tariff, trade or investment policies or law; uninsured losses, including those from natural disasters, pandemics, catastrophe, theft or sabotage; energy, transportation, price volatility and cost issues; legal and regulatory, including environmental, disputes or proceedings; ability to protect our intellectual property and information technology systems; achievement of expected synergies or productivity improvements; the level of fixed costs required to run our business; currency, commodity and interest rate fluctuations; our level of indebtedness, liquidity, and the availability and cost of credit; levels of goodwill or other indefinite-lived intangible assets; price volatility in U.S. wind energy markets; labor disputes or shortages, or loss of key employees; pension obligations; and factors detailed from time to time in the Company's SEC filings.

The terms "year to date" or last twelve months ("LTM") refer to the period ended on the last calendar day of the quarter preceding the date of the investor event referenced on the first page above. Otherwise the information in this presentation speaks as of the date of the investor event, and is subject to change. The Company assumes no obligation to update or revise forward-looking statements except as required by law. Any distribution of this presentation after the investor event is not intended and should not be construed as updating or confirming such information.

This presentation contains references to certain "non-GAAP financial measures" as defined by the SEC, which may be referenced in the Appendix or in the tables of our earnings press release. Adjusted EBIT, adjusted EBITDA, adjusted earnings, adjusted EPS and return on capital exclude certain items that management does not allocate to its segment results because it believes they are not representative of the Company's ongoing operations. When the company provides forward-looking expectations for non-GAAP measures, the most comparable GAAP measures and reconciliations to those GAAP measures are generally not available without unreasonable effort due to the variability, complexity and limited visibility of the adjusting items that would be excluded from the non-GAAP measures in future periods. The variability in timing and amount of adjusting items could have significant and unpredictable effects on future GAAP results.

THE PINK PANTHER™ & © 1964-2021Metro-Goldwyn-Mayer Studios Inc. All Rights Reserved. © 2021 Owens Corning. All Rights Reserved.

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AGENDA

1	Investment highlights
2	Innovation supporting the strategy

3	Sustainability is core to who we are and what we do
4 Integrated businesses
5	Additional financial information

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OWENS CORNING AT A GLANCE

A GLOBAL BUILDING AND CONSTRUCTION MATERIALS LEADER

$7.1B

19,000

2020 Revenue	Employees	Countries where	Manufacturing
		we operate	sites
ROOFING	INSULATION		COMPOSITES

Revenue by end market		Revenue by geography
Residential Construction	58%	U.S.	67%
Materials
Commercial and Other		Europe	16%
23%
Construction Materials
	Asia Pacific	10%
Industrial and Other	19%	Rest of World	7%

Note: Data as of 2020 Form 10-K; Consolidated figures eliminate intercompany net sales between reportable segments

Source: 2020 Form 10-K and Owens Corning management estimates; estimated error margin +/- 5%..

OUR

MISSION

Building a sustainable future through material innovation

OUR

PURPOSE

Our people and products make the world a better place

OUR

VALUES

Global in scope, human in scale

Caring

Curious

Collaborative

Committed