NAVIGATION

MASCO CORPORATION ANNOUNCES DATE FOR EARNINGS RELEASE AND CONFERENCE CALL FOR 2004 SECOND QUARTER

July 29, 2004

Taylor, Michigan (July 29, 2004)...Masco Corporation (NYSE: MAS) today announced that it will hold a conference call regarding 2004 second quarter earnings on Tuesday, August 3 at 11:00 a.m. ET. The conference call will be hosted by Masco Chairman and CEO Richard A. Manoogian. Participants in the call are asked to register five to ten minutes prior to the scheduled start time by dialing (913) 981-5522 (confirmation #119503).

The 2004 second quarter supplemental material will be distributed prior to the conference call and will be available on the Company's website at www.masco.com.

The conference call will be webcast simultaneously and in its entirety through the Masco Corporation website. Shareholders, media representatives and others interested in Masco may participate in the webcast by registering through the Investor Relations section on the Company's website.

A replay of the call will be available on Masco's website or by phone by dialing (719) 457-0820 (replay access code #119503). The replay will be available approximately two hours after the end of the call and continue through August 10, 2004.

Headquartered in Taylor, Michigan, Masco Corporation is one of the world's leading manufacturers of home improvement and building products as well as a leading provider of services that include the installation of insulation and other building products.

Masco Corporation's press releases and other information are available through the Company's toll free number, 1-888-MAS-NEWS, or under the Investor Relations section of Masco's website at www.masco.com.

Statements contained herein may include certain forward-looking statements regarding Masco's future sales, earnings growth potential and other developments. Actual results may vary materially because of external factors such as interest rate fluctuations, changes in consumer spending and other factors over which management has no control. The Company believes that certain non-GAAP performance measures and ratios, used in managing the business, may provide users of this financial information with additional meaningful comparisons between current results and results in prior periods. Non-GAAP financial measures and ratios should be viewed in addition to, and not as an alternative for, the Company's reported results. Additional information about the Company's products, markets and conditions, which could affect the Company's future performance, is contained in the Company's filings with the Securities and Exchange Commission and is available on Masco's website at www.masco.com. Masco undertakes no obligation to update any forward-looking statements, whether as a result of new information, future events or otherwise.