Commission

File Number

(IRS Employer

Identification No.)

On July 30, 2010 Louisiana - Pacific Corporation issued a press release announcing financial results for the quarter ended June 30, 2010, a copy of which is attached hereto as Exhibit 99.1 and incorporated herein by reference.

In addition to disclosing financial results calculated in accordance with U.S. generally accepted accounting principles (“GAAP”), the attached press release discloses continuing earnings before interest expense, taxes, depreciation and amortization (“EBITDA from continuing operations”) which is a non-GAAP financial measure. Additionally, it discloses Adjusted EBITDA from continuing operations which further adjusts EBITDA from continuing operations to exclude stock based compensation expense, (gain) loss on sales or impairment of long lived assets, other operating charges and credits, other than temporary investment impairment, early debt extinguishment and investment income. Both EBITDA from continuing operations and Adjusted EBITDA from continuing operations are not a substitute for the GAAP measure of net income or operating cash flows or other GAAP measures of operating performance or liquidity.

We have EBITDA from continuing operations and Adjusted EBITDA from continuing operations in the press release because we use them as important supplemental measures of our performance and believe that similarly-titled measures are frequently used by securities analysts, investors and other interested persons in the evaluation of companies in our industry, some of which present similarly-titled measures when reporting their results. We use EBITDA from continuing operations and Adjusted EBITDA from continuing operations to evaluate our performance as compared to other companies in our industry that have different financing and capital structures and/or tax rates. It should be noted that companies calculate similarly-titled measures differently and, therefore, as presented by us may not be comparable to similarly-titled measures reported by other companies. In addition, EBITDA from continuing operations has material limitations as a performance measure because it excludes interest, realized gain on sale of long-term investments, income tax (benefit) expense and depreciation and amortization which are necessary to operate our business or which we otherwise incurred or experienced in connection with the operation of our business.

We believe that income (loss) from continuing operations excluding (gain) loss on sale or impairment of long-lived assets and other operating credits and charges, net, early debt extinguishment and other than temporary investment impairment is a useful measure for evaluating our ability to generate earnings from continuing

operations and that providing this measure will allow investors to more readily compare the earnings referred to in the press release to our earnings for past and future periods. We believe that this measure is particularly useful where the amounts of the excluded items are not consistent between the periods presented. It should be noted that other companies may present similarly-titled measures differently and, therefore, as presented by us may not be comparable to similarly-titled measures reported by other companies. In addition, income (loss) from continuing operations excluding (gain) loss on sale or impairment of long-lived assets and other operating credits and charges, net, early debt extinguishment and other than temporary investment impairment, has material limitations as a performance measure because it excludes items that are actually incurred or experienced in connection with the operations of our business.

Total sales for the second quarter of $447 million were up 67 percent versus a year ago, led by higher OSB prices while U.S. housing starts increased 12 percent from second quarter 2009 levels.

Income from continuing operations of $24 million, or $0.17 per diluted share.

Adjusted EBITDA from continuing operations for the second quarter was $75 million compared to a $11 million loss in the second quarter of 2009.

Net sales

Income (loss) from operations

Income (loss) before income taxes and equity in loss of unconsolidated affiliates

Income (loss) from continuing operations excluding (gain) loss on sale or impairment of long-lived assets, other operating credits and charges, net, gain on early debt extinguishment and other than temporary investment impairment

Income (loss) from continuing operations

Net income (loss) attributable to LP

Net income (loss) per share - basic

                                    - diluted

Average shares outstanding (in millions)

Basic

Diluted

Income (loss) from continuing operations

Other than temporary investment impairment

Gain on early extinguishment of debt

(Gain) loss on sale or impairment of long-lived assets

Other operating credits and charges, net

Provision (benefit) for income taxes on above items

Per share - basic

Per share - diluted

Net sales

Operating costs and expenses:

Cost of sales

Depreciation, amortization and cost of timber harvested

Selling and administrative

(Gain) loss on sale or impairment of long-lived assets

Other operating credits and charges, net

Total operating costs and expenses

Income (loss) from operations

Non-operating income (expense):

Foreign currency exchange gain (loss)

Gain on early debt extinguishment

Other than temporary investment impairment

Interest expense, net of capitalized interest

Investment income

Total non-operating income (expense)

Income (loss) before taxes and equity in loss of unconsolidated affiliates

Provision (benefit) for income taxes

Equity in (income) loss of unconsolidated affiliates

Income (loss) from continuing operations

Discontinued operations:

Loss from discontinued operations before income taxes

Income tax benefit

Loss from discontinued operations

Net income (loss)

Less: Net income (loss) attributed to noncontrolling interest

Net income (loss) attributed to Louisiana-Pacific Corporation

Income (loss) per share of common stock (basic):

Income (loss) from continuing operations

Loss from discontinued operations

Net income (loss) per share

Income (loss) per share of common stock (diluted):

Income (loss) from continuing operations

Loss from discontinued operations

Net income (loss) per share

Average shares of stock outstanding - basic

Average shares of stock outstanding - diluted

ASSETS

Cash and cash equivalents

Receivables, net of allowance for doubtful accounts of $1.3 million and $1.2 million at June 30, 2010 and December 31, 2009

Income tax receivable

Inventories

Prepaid expenses and other current assets

Deferred income taxes

Current portion of notes receivable from asset sales

Assets held for sale

Total current assets

Timber and timberlands

Property, plant and equipment, at cost

Accumulated depreciation

Net property, plant and equipment

Notes receivable from asset sales

Long-term investments

Restricted cash

Investments in and advances to affiliates

Deferred debt costs

Other assets

Long-term deferred tax asset

Total assets

LIABILITIES AND EQUITY

Current portion of long-term debt

Current portion of limited recourse notes payable

Short-term notes payable

Accounts payable and accrued liabilities

Current portion of deferred tax liability

Current portion of contingency reserves

Total current liabilities

Long-term debt, excluding current portion

Contingency reserves, excluding current portion

Other long-term liabilities

Deferred income taxes

Redeemable non-controlling interest

Stockholders’ equity:

Common stock

Additional paid-in capital

Retained earnings

Treasury stock

Accumulated comprehensive loss

Total stockholders’ equity

Total liabilities and stockholders’ equity

CASH FLOWS FROM OPERATING ACTIVITIES:

Net income (loss)

Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:

Depreciation, amortization and cost of timber harvested

(Gain) loss of unconsolidated affiliates

Other operating charges and credits, net

(Gain) loss on sale or impairment of long-lived assets

Other than temporary investment impairment

Stock based compensation expense related to stock plans

Exchange (gain) loss on remeasurement

Cash settlement of contingencies

Other adjustments

Pension expense (in excess of payments)

Decrease (increase) in receivables

Decrease (increase) in income tax receivables

Decrease (increase) in inventories

Decrease (increase) in prepaid expenses

Increase in accounts payable and accrued liabilities

Increase (decrease) in deferred income taxes

Net cash provided by operating activities

CASH FLOWS FROM INVESTING ACTIVITIES:

Property, plant, and equipment additions

Reimbursement from (investments in and advances) to joint ventures

Proceeds from sale of assets

Receipt of proceeds from notes receivable

Proceeds from sales of investments

Decrease in restricted cash under letters of credit

Other investing activities, net

Net cash provided by investing activities

CASH FLOWS FROM FINANCING ACTIVITIES:

Borrowing of long term debt

Repayment of long term debt

Payment of debt issuance fees

Net cash provided by (used in) financing activities

EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS

Net increase in cash and cash equivalents

Cash and cash equivalents at beginning of period

Cash and cash equivalents at end of period

Net sales:

OSB

Siding

Engineered Wood Products

Other

less intersegment sales

Operating profit (loss):

OSB

Siding

Engineered Wood Products

Other

less intersegment elimination

Other operating credits and charges, net

Gain (loss) on sales of and impairment of long-lived assets

General corporate and other expenses, net

Foreign currency gain (losses)

Gain on early debt extinguishment

Other than temporary investment impairment

Investment income

Interest expense, net of capitalized interest

Income (loss) from operations before taxes

Provision (benefit) for income taxes

Income (loss) from continuing operations

Oriented strand board, million square feet 3/8” basis ⁽¹⁾

Oriented strand board, million square feet 3/8” basis
(produced by wood-based siding mills)

Wood-based siding, million square feet 3/8” basis

Engineered I-Joist, million lineal feet ⁽¹⁾

Laminated veneer lumber (LVL) and Laminated strand lumber (LSL), thousand cubic feet

Includes volumes produced by joint venture operations or under sales arrangements and sold to LP.

Three Months Ended June 30, 2010

Sales

Depreciation and amortization

Cost of sales and selling and administrative

(Gain) loss on sale or impairment of long lived assets

Other operating credits and charges, net

Total operating costs

Income (loss) from operations

Total non-operating income (expense)

Income (loss) before income taxes and equity in earnings of unconsolidated affiliates

Provision (benefit) for income taxes

Equity in (income) loss of unconsolidated affiliates

Income (loss) from continuing operations

Reconciliation of income (loss) from continuing operations to adjusted EBITDA from continuing operations

Income (loss) from continuing operations

Income tax provision (benefit)

Interest expense, net of capitalized interest

Depreciation and amortization

EBITDA from continuing operations