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Drop attic temps 30–40°F.
Cut AC bills. Save your roof.

Ridge vents, solar attic fans, and AttiCat blown-in insulation. The cheapest upgrade you can make to a roof — and the one with the longest payback. Best installed during a re-roof.

What we install

Five components, one balanced system

Vent area is calculated as a ratio to attic floor space (FBC requires 1:300). Intake + exhaust must be balanced — most homes have one without the other.

Continuous ridge vent

Runs the length of the roof peak. Hidden under cap shingles or tile. Highest exhaust capacity per linear foot.

Off-ridge vents

For roofs without a continuous peak (hip roofs, complex valleys). 4-6 vents distributed across the upper roof slope.

Solar attic fan

Self-powered. 1,200-1,800 CFM. Drops attic temp 20-30°F on sunny days. No electrician required. 25-year warranty.

Vented soffit intake

Cool intake air enters here. Without it, ridge vents pull conditioned air from your living space — backwards.

AttiCat blown-in insulation

Owens Corning fiberglass. Adds R-19 to R-25 to existing insulation. Brings most homes from R-13/R-19 to R-30+.

Radiant barrier (optional)

Foil-backed sheathing or stapled film. Reflects 90%+ of radiant heat. Best installed during a re-roof.

Real numbers

What proper ventilation actually does

Every roof we install includes balanced ventilation. Most South Florida homes don’t have it. Here’s the difference.

Attic temp drop
30–40°F
AC cost reduction
10–25%
Roof life extension
5–10 yr
Typical payback
3–7 yr

Common questions

Ventilation FAQ

Why does attic ventilation matter?

Without it, your attic hits 140-160°F in South Florida summer. That heat bakes shingles from underneath (cutting their lifespan 20-30%), forces your AC to work harder (10-25% higher bills), and creates moisture problems that grow mold and warp decking. Proper ventilation is the cheapest, highest-ROI upgrade you can make to a roof.

Solar attic fan vs ridge vent — which is better?

Both work, ideally together. Ridge vents are passive — they let hot air escape continuously but only when there's a temperature differential. Solar attic fans are active — they push air out at high CFM regardless of conditions. We typically install ridge vents on every re-roof and add a solar attic fan if your attic temps test above 130°F.

How much insulation should I have?

Florida code minimum is R-30 for new construction. Most older homes have R-13 to R-19 — half the recommended amount. AttiCat blown-in fiberglass adds R-19 to R-25 in a few hours, brings you to R-30+, and pays back through AC savings in 3-7 years.

Should I install a radiant barrier?

Maybe. Radiant barriers (foil-backed sheathing or stapled film) reflect 90%+ of radiant heat back away from your living space. Best installed during a re-roof when the deck is exposed. Reduces ceiling temps by 5-10°F and AC use by 5-10%. Cost: $1.50-$3.00 per sq ft of roof area.

Test your attic temperature for free.

We bring an infrared thermometer to every inspection — you’ll see the exact temperature reading and the upgrade path.

Sanctuary Home Solutions

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