TECHNICAL FAQ's
WHAT IS THE R-VALUE OF AN ICF HOME?
"The R-value is the measurement of a material's capacity to resist heat flow from one side to the other. In simple terms, R-values measure the effectiveness of insulation and a higher number represents more effective insulation."
A typical ICF wall with a 6” concrete core will have an equivalent R-value of 50. Both the inside and outside panels of 2 5/8” EPS foam have a R-value of 22. When combined with the thermal mass of the concrete, the actual performance is much higher.
SHOULD THE CONCRETE BE MECHANICALLY VIBRATED?
Yes, All concrete placed in ICF forms should be consolidated using a vibrator. Most ICF Forms are engineered to withstand the rigors of internal vibration. "Patting" or "tapping" the exterior of the forms is not an effective method of concrete consolidation.
ARE ICF's FLORIDA PRODUCT CODES APPROVED?
Good question! There are many different brands of ICF on the market. Coastal ICF uses Florida product approved products. It is always a good idea to verify that the products you use have been approved by the state. VISIT FLORIDA BUILDING >>
DOES ICF CHANGE THE HVAC SYSTEM OF THE HOUSE?
Yes. The most common difference is to use a variable speed air handler. The A/C system not only cools but de-humidifies the air in your home. ICF homes are so energy efficient that the air conditioning may remain off for long periods of time. To avoid “short cycling” the variable speed air handler runs in a slower, more continuous, and energy efficient mode. This slower cycle not only provides cooling but continuous de-humidification as well.
HOW DO YOU PROTECT THE EXPOSED FOAM BETWEEN THE GRADE & THE SIDING?
A cement-based product is applied with a trowel over fiberglass mesh which is attached to the ICF wall. This gives it protection from stones, water, and other hazards.