A FORTIFIED ranch roof in Lexington.

A low-pitch Lexington ranch with two roof sections. From the street it looks simple; under the shingles, spray foam on the deck meant an extra layer of wood for FORTIFIED approval.

Aerial view of a Lexington ranch home with a new CertainTeed Landmark roof — After: the finished CertainTeed Landmark roof.

What this customer paid

$18,030

Town: Lexington
Roof size: 1,989 sq ft
Pitch: 4/12
Roof sections: 2
Shingle: CertainTeed Landmark
Valleys and hips: None
Designation: FORTIFIED

The challenge

Two roof sections, a gentle 4/12 pitch, no valleys and no hips. The hard part was under the shingles: the roof deck had previously been spray foamed from below. To meet FORTIFIED approval, we had to add an extra layer of decking over it.

What we did

Tore off the old roof, added a new layer of decking over the spray-foamed deck so the job could meet FORTIFIED approval, then sealed the roof deck with ice and water shield, then installed CertainTeed Landmark shingles.

The result

A new CertainTeed Landmark roof on a ranch that looks simple from the street. What he paid was $18,030, driven by the extra decking the spray foam made necessary. He also received a $10,000 Strengthen Kentucky Homes grant, which brought his out-of-pocket cost down.

Photos

Aerial view of the ranch roof before replacement — BeforeThe old roof, from the front.

Aerial view of the new CertainTeed Landmark roof — AfterThe new roof, from the front.

Aerial view of the back of the roof before replacement — BeforeThe back of the old roof.

Aerial view of the back of the new roof — AfterThe back of the new roof.

Front of the ranch home with the new roof — AfterFrom the street.

How we built it to the FORTIFIED standard

Spray foam visible at the edge of the old roof deck, with a tape measure — Spray foam under the old deckThe old deck had been spray foamed from below. That is why it needed an extra layer of decking.

New OSB sheets being laid over the old board roof deck — Extra layer of deckingNew OSB going down over the old deck.

Box of Paslode ring-shank framing nails on the roof deck — Ring-shank nailsRing-shank nails hold the deck down better than smooth nails.

Chalk lines on new OSB decking with a tape measure across them — Nailing linesChalk lines mark where the deck gets nailed, checked with a tape.

Black drip edge nailed along the eave with a tape measure above it — Drip edge nailingDrip edge along the eave, with the nail spacing measured.

Ice and water shield covering the new roof deck, with chalk lines snapped for shingles — Sealed roof deck (ice and water shield)Ice and water shield across the new deck seals it. We choose it over seam tape because it performs better and has a higher success rate in IBHS approvals.

What drove the price

Gentle 4/12 pitch and only 2 roof sections
Spray-foamed deck that needed an extra layer of decking for FORTIFIED approval
CertainTeed Landmark shingles
Ice and water shield sealing the roof deck
$10,000 Strengthen Kentucky Homes grant (reduced out-of-pocket)

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