Another reason to choose
Steel
over Plastic
S E E   L E T T E R
 

Craftsman Homes and Design

 

 
 

WHY DID OUR ENGINEERS CHOOSE STEEL OVER PLASTIC?
 

Superior Strength
 
· The patented design of the PolySteel furring strips and form ties are engineered to maximize strength, allow for good concrete consolidation and provide the thermal bridging needed to maximize the effects of the concrete thermal mass inside the forms, while minimizing the effects of unwanted heat transfer through the walls.
   
· The tensile strength of steel gives PolySteel a cross tie that is more than twice as strong as the plastic cross ties found in other insulating concrete forms
   
· Kitchen cabinets and other heavy objects can attached securely to the steel attach points.


Checking slump prior to pouring a
PolySteel project.

Safety

· Plastic melts and burns. The steel inserts used in PolySteel cannot burn. With PolySteel, during a fire situation, the drywall remains in place, unlike the plastic.
   
· The plastic form ties used in most ICFs add an additional 5,000 BTUs of fuel value per square foot of wall, which means there is more fuel to burn and prolong a fire when one occurs.
   
· Many plastics deteriorate and become brittle when exposed to the sun’s ultra-violet
rays during the 2-6 month period of construction during which they are exposed.  Still others crack and crumble after several years of aging. Steel is unaffected.
   
· Many of the plastic materials used for ICF form ties become brittle and break in extreme cold weather conditions. Steel again remains unaffected.
   
· No “traditional” concrete forming system used in North America today uses plastic form ties. They all use steel ties. They have good reasons for this, even though plastic is less expensive.

Energy Efficiency

·

The PolySteel design accepts an 18% reduction in R-value in order to gain a 29% increase in effective R-value performance by utilizing the thermal mass of the concrete wall. Plastic ties do not permit the transfer of heat energy into and out of the thermal mass. PolySteel's galvanized steel attachpoints actually achieve an 11% increase in R-value performance by enhancing the thermal mass of the concrete.