UltraBlock Technology

UltraBlock® technology integrates a composite block into the bottom of the stiles, where water infiltration can occur. The 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.

UltraBlock technology is already included on most Simpson entry doors. And for doors that do not include it as a standard, it can be ordered as an option. Simply let us know you want UltraBlock in 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

UltraBlock comes standard on doors from the following product lines:
• Mastermark® Collection
• Craftsman Collection
• Bungalow Series®
• Builder’s Advantage® Series
• Selects Series
• Exterior Barn Doors

FLEXIBLE DESIGN OPTIONS
• UltraBlock can be used in any door 1 3/4” and 2 1/4” thick
• Protect all of your exterior doors including entry, side and patio
• Can be used with any wood species