Fi-Foil Insulation in Florida

Roughly three-quarters of the heat entering a Florida attic arrives as radiant energy from the sun, not conduction. Reflective foil rejects that radiant load before it reaches your ceiling, which is why Fi-Foil systems are so common in Florida block homes.

Why reflective systems belong in Florida buildings

Fi-Foil is a Florida company making products for Florida buildings, and their reflective insulation systems are engineered around exactly the failure mode our climate produces: massive radiant heat gain plus inward vapor drive.

A reflective foil surface facing an enclosed air space rejects the vast majority of radiant heat that strikes it. Because our dominant attic heat load is radiant rather than conductive, that's a large fraction of the problem solved by a thin, lightweight, inexpensive material.

Masonry block wall systems

Most older Florida homes are CMU block with furring strips and drywall on the interior — and nothing at all in between. Fi-Foil's furring-strip systems install into that space and deliver a real system R-value where there was essentially none, without losing interior square footage or requiring exterior work.

On a west-facing block wall that soaks up sun until 7pm, the difference is something homeowners feel by touching the drywall.

Vapor control done the Florida way

Fi-Foil's perforated and non-perforated products let us tune the vapor permeance of the assembly to the situation. That's the part most out-of-state contractors get wrong here — they install a vapor barrier in the wrong plane and create a condensation surface inside the wall. The right foil product in the right plane lets the assembly dry in the direction it needs to.

Pairing foil with mass insulation

Reflective systems and bulk insulation aren't competitors, they're complements. Radiant barrier at the roof deck plus blown-in at the attic floor is a very strong, very cost-effective Florida combination: the foil kills the radiant load before it reaches the insulation, and the insulation handles what conducts through.

Why Florida homeowners and builders choose Standard Insulation

• Licensed and fully insured Florida insulation contractor
• Open 24 hours a day, 7 days a week — a real person answers
• Free written, itemized estimates with options priced side by side
• Owner-operated by Dylan Cecere, who still walks jobs personally
• Every city in all 67 Florida counties, with our densest coverage in Palm Beach County
• Clean job sites, containment, and a walkthrough before we leave