Weathermate Sill Pan Is A Translucent, Molded Polymer Sill Pan For Flashing The Base Of Windows Its Molded Design Features Front Flashing That Extends Approximately 3 Below The Rough Opening Sill And Approximately 3 Outd From The Corner Of The Rough Opening Sill (As Shown At Right) To Protect This Critical Area From Water Intrusion The Backdam Protects Against Water Intrusion And Is Designed According To Astm E2112 Guidelines If The Backdam Requires Modification, Great Stuff Pro Window & Door Insulating Foam Sealant Should Be Applied Between The Backdam And Interior Drywall This Minimalexpanding, Low Pressurebuild Sealant Blocks Winddriven Rain From Entering This Area In This Case, The Backdam Serves As A Secondary Defense The Innovative Twopiece Construction Can Be Adjusted To Fit Most Window Sill Widths, Providing A Continuous Shield Against Water Infiltration, Even In Sill Corners
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