NAVIGATION

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

April 26, 2004

Taylor, Michigan (April 26, 2004)...Masco Corporation (NYSE: MAS) today announced that it will hold a conference call regarding 2004 first quarter earnings on Monday, May 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) 981-4910 (confirmation #423996).

The 2004 first 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 #423996). The replay will be available approximately two hours after the end of the call and continue through May 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.

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. Additional information about our products, markets and conditions, which could affect our 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.