OWENS CORNING SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN

Exhibit 10.30

OWENS CORNING

SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN

As amended and restated

effective as of January 1, 2009

OWENS CORNING SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN

Table of Contents

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OWENS CORNING SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN

[As amended and restated effective as of January 1, 2009]

ARTICLE I

ESTABLISHMENT AND PURPOSE OF THE PLAN

1.1 Establishment of the Plan . Effective as of January 1, 1998, Owens Corning established this “Owens Corning Supplemental Executive Retirement Plan.” The Plan was hereby amended and restated effective as of January 1, 2009.

1.2 Purpose of the Plan . The Plan is intended to constitute an unfunded program maintained primarily for the purpose of providing deferred compensation for a select group of management or highly compensated employees consistent with the requirements of Sections 201(2), 301(a)(3), and 401(a)(1) of the Employee Retirement Income Security Act of 1974, as amended (“ERISA”). The Plan provides supplemental retirement income to Eligible Employees.

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ARTICLE II

DEFINITIONS

The following words and phrases as used in this Plan have the following meanings:

2.1 Actuarial Equivalent . The term “Actuarial Equivalent” shall have the same meaning as defined in Appendix B of the Cash Balance Plan.

2.2 Administrator . The term “Administrator” means the individual described in Section 7.1 who is designated to administer the Plan.

2.3 Affiliate . The term “Affiliate” shall have the same meaning given to such term by the Cash Balance Plan.

2.4 Beneficiary . The term “Beneficiary” means the person or persons designated by the Eligible Employee to receive the death benefit under the Cash Balance Plan after the death of the Eligible Employee.

2.5 Board of Directors . The term “Board of Directors” means the Board of Directors of Owens Corning.

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2.6 Cash Balance Account . The term “Cash Balance Account” means the Eligible Employee’s “Account” (as defined under the Cash Balance Plan) determined in accordance with the Cash Balance Plan and increased to reflect any benefits accrued on behalf of the Eligible Employee under the Excess Plan.

2.7 Cash Balance Plan . The term “Cash Balance Plan” means the Owens Corning Cash Balance Pension Plan, which is part of the Owens Corning Merged Retirement Plan and is set forth in Attachment 1 to the Owens Corning Merged Retirement Plan, as amended.

2.8 Code . The term “Code” means the Internal Revenue Code of 1986, as amended.

2.9 Eligible Employee . The term “Eligible Employee” means an individual who meets the requirements of Section 3.1.

2.10 Employer . The term “Employer” means Owens Corning and any other Affiliate that has adopted the Cash Balance Plan.

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2.11 Excess Plan . The term “Excess Plan” means the Owens-Corning Executive Supplemental Benefit Plan, as amended and restated effective January 1, 2009, and as amended from time to time thereafter.

2.12 Hire Date . The term “Hire Date” means the date on which the Eligible Employee was first employed with the Employer or such other date as specified by agreement with such Eligible Employee at the time they are designated to be eligible for participation in the Plan.

2.13 Offset Amount . The term “Offset Amount” means the amount applicable to an Eligible Employee as determined under Section 3.2(c).

2.14 Plan . The term “Plan” means the “Owens Corning Supplemental Executive Retirement Plan” as set forth herein and as amended from time to time.

2.15 Prior Accrued Retirement Benefits . The term “Prior Accrued Retirement Benefits” means all nonforfeitable retirement benefits accrued on behalf of an Eligible Employee under any “pension plan” (as defined in Section 3(2) of ERISA), including all tax-qualified and non-tax-qualified defined benefit and defined contribution plans other than any defined contribution plan that the

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Administrator determines was not the primary source of the Eligible Employee’s retirement benefits from his or her prior employer, determined as of the date the Eligible Employee is first employed with the Employer, and expressed, in the case of a “defined benefit plan” (as defined in ERISA section 3(35)), in the form of a single life annuity commencing at the participant’s normal retirement age under such plan (or the age 65 single life annuity Actuarial Equivalent of the accrued benefit under such plan, if such a form is not available under the plan).

2.16 Separation from service . The term “Separation from service” as used herein shall mean termination of active employment from the Employer.

2.17 Supplemental Retirement Benefit . The term “Supplemental Retirement Benefit” means a benefit that is payable to an Eligible Employee in accordance with Article III of this Plan.

2.17 Supplemental Survivor’s Benefit . The term “Supplemental Survivor’s Benefit” means a benefit that is payable to a Beneficiary in accordance with Article III of this Plan.

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ARTICLE III

SUPPLEMENTAL RETIREMENT BENEFIT

3.1 Eligible Employees . An individual is an Eligible Employee if he or she is a member of a select group of management or highly compensated employees of an Employer, and he or she —

3.2 Supplemental Retirement Benefit .

(a) An Eligible Employee shall be entitled to a Supplemental Retirement Benefit as determined under Sections 3.2(b) and (c) upon his or her termination of employment with all Employers.

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