UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D. C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): December 10, 2010

Headwaters Incorporated

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (801) 984-9400

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Certain statements contained in this Current Report on Form 8-K are forward-looking statements within the meaning of federal securities laws and Headwaters intends that such forward-looking statements be subject to the safe-harbor created thereby.

Forward-looking statements include Headwaters’ expectations as to the managing and marketing of coal combustion products, the production and marketing of building materials and products, the production and marketing of cleaned coal, the licensing of residue hydrocracking technology and catalyst sales to oil refineries, the availability of refined coal tax credits, the development, commercialization, and financing of new technologies and other strategic business opportunities and acquisitions, and other information about Headwaters. Such statements that are not purely historical by nature, including those statements regarding Headwaters’ future business plans, the operation of facilities, the availability of feedstocks, and the marketability of the coal combustion products, building products, cleaned coal, catalysts, and the availability of tax credits, are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 regarding future events and our future results that are based on current expectations, estimates, forecasts, and projections about the industries in which we operate and the beliefs and assumptions of our management. Actual results may vary materially from such expectations. In some cases, words such as “may,” ‘should,” “intends,” “plans,” “expects,” “anticipates,” “targets,” “goals,” “projects,” “believes,” “seeks,” “estimates,” “forecasts,” or variations of such words and similar expressions, or the negative of such terms, may help to identify such forward-looking statements. In addition, any statements that refer to projections of our future financial performance, our anticipated growth and trends in our businesses, and other characterizations of future events or circumstances, are forward-looking.

In addition to matters affecting the coal combustion products, building products, and energy industries or the economy generally, factors that could cause actual results to differ from expectations stated in forward-looking statements include, among others, the factors described in Item 1A Risk Factors in Headwaters’ Annual Report on Form 10-K for the fiscal year ended September 30, 2010, Quarterly Reports on Form 10-Q, and other periodic filings and prospectuses.

Although Headwaters believes that its expectations are based on reasonable assumptions within the bounds of its knowledge of its business and operations, there can be no assurance that our results of operations will not be adversely affected by such factors. Unless legally required, we undertake no obligation to revise or update any forward-looking statements for any reason. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date of this report.

On December 10, 2010, we amended our $70 million asset based loan credit facility (“ABL Revolver”). Among other things, the amendment reduces the interest rate on LIBOR borrowings by 150 basis points, removes the asset disposal restriction on non-borrower subsidiaries, and increases the availability to make strategic permitted acquisitions aggregating up to $10 million annually, subject to a $30 million cap during the term of the ABL Revolver. The fixed charge coverage ratio covenant was amended to drop the trigger of available borrowings to revolving loan commitments from 50% down to 15% with the triggered ratio being reduced from

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1.1 to 1.0. The new amendment provides the ability to prepay senior secured notes if, among other conditions, available borrowings are greater than 50% of revolving loan commitments. The amendment is filed as exhibit 4.9.1 attached hereto.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Date: December 14, 2010

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