Simpson Ultrablock Technology

ULTRABLOCK® TECHNOLOGY 

A long time favorite of Simpson’s most discriminating customers, UltraBlock technology integrates a composite block into the bottom of the stiles, where water infiltration can occur. Our exclusive Weather SealTM process provides additional protection against moisture penetrating the bottom of the door. It’s our answer to the galoshes you splashed around in as a kid. 

PROVEN PROTECTION FOR YOUR DOOR 

• Composite block material finger-jointed into the bottom of the stiles eliminates water infiltration
• Minimizes the possibility of stile and rail separation
• Eliminates bottom rail and lower stile decay
• Reduces buckling and swelling of bottom rail and lower stile components
• Improves warp resistance
• 5-year warranty
• Already a standard on most Simpson entry doors FLEXIBLE DESIGN OPTIONS
• UltraBlock can be used in any door 1 3/4” thick
• Protect all of your exterior doors including entry, side and patio
• Can be used with any wood species

ULTRABLOCK COMES STANDARD ON DOORS FROM THE FOLLOWING SIMPSON ENTRY DOOR PRODUCT LINES: 

• Mastermark® Collection
• Craftsman Collection
• Bungalow Series®
• Builder’s Advantage Series® 
• Selects Series