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Question 1:
The Florida Building Code has two methods - Performance and Prescriptive. What is the difference?
Answer 1:
The Prescriptive Method has pre-assigned minimums for each component of the building; the Performance Method allows customization and assigns points for credits for each area. The total points for the residential structure must be .80 or less to “Pass” and qualify for the building permit.
Question 2:
The Florida Prescriptive method now requires an R-7.8 on masonry block walls; does this mean my only option is to use insulation with an R-7.8 or higher value?
Answer 2:
No. By simply changing the Energy Code Form from the Prescriptive Method to the Performance Method, you can still install Fi-Foil’s AA2 Vapor Shield Hi-Perm (R-4.1) on the masonry block wall. If the subject house does not pass code compliance, then you will have to make up the difference in another area. For example, a higher efficiency HVAC system, an attic radiant barrier, or higher performance windows will provide “credits” that apply against the total point requirement for the building.
Question 3:
Will the use of the Performance Method be “New” to the builders and architects?
Answer 3:
No, in fact the Prescriptive Method has been used in less than 15% of the total buildings in Florida. The Performance Method has always been the preferred method.
Question 4:
Does Fi-Foil have higher R-value solutions for masonry block walls?
Answer 4:
Yes. Fi-Foil manufactures a product called VR Plus Shield Hi-Perm that can be installed on 1-1/2” furring or 1-5/8” metal framing to achieve an R-7.0 (or R-7.1 for Standard version). Fi-Foil can also be combined with other insulation materials to generate even higher insulation system values. For example, if you install a 3/4” foam board (R-4.0) against the masonry block wall, install 3/4″ furring strips over the foam board, then staple Fi-Foil’s AA2 Vapor Shield Hi-Perm (R-4.1) to the face of the furring strip. The total R-value for this hybrid insulation system will be R-8.1.
Question 5:
What other Fi-Foil product options will help us lower the point totals in the buildings?
Answer 5:
Fi-Foil’s Silver Shield Radiant Barrier installed as an attic radiant barrier, can offer credits of 2-5 points; And the insulation contractor currently installing your Fi-Foil products can install this product for you.
Question 6:
What do you have to address frame wall applications?
Answer 6:
We recommend Fi-Foil’s Flash & FOIL (VR Plus Shield reflective insulation combined with Closed Cell Spray Foam) to create a high performance solution for frame walls, achieving an R-19 on 2” x 4” frame walls. Go to: www.flashandfoil.com for more details.
For further information on meeting the current building codes in your area, with Fi-Foil’s products, please contact Gene Bassham at (800)448-3401 or email him at gbassham@fifoil.com. Gene Bassham is the Technical Services Manager at Fi-Foil Company, Inc. and is a Certified Energy Rater with the State of Florida.