Boise and the Treasure Valley

Metal Roofing Over Existing Shingles in Boise, ID

Installing a metal roof over an existing single layer of asphalt shingles — a real option under Boise-area recover code provisions when the deck and existing roof qualify, at a lower cost than full tear-off.

Typical range: $900–$1,600 per roofing square installed

Call (208) 279-6903

Metal Roofing Over Existing Shingles underway on a property in Boise, ID

Floating-clip standing seam — no screwed-through panels

Galvalume or better, matched to the manufacturer spec

Permit pulled on every job

Written per-square metal pricing

Old roofing hauled away

Last updated: 2026-08-23

Metal Roofing Boise is a roofing company serving Boise and the Treasure Valley, and metal roofing over existing shingles is one of the services we handle most. This page covers what the work involves here specifically — the climate, the code, and what it costs — rather than what it involves in general.

What we do on the first visit

The first visit is an inspection, not a sales call. We walk the roof with you, check the deck from the attic side where we can, count valleys and penetrations, and note the pitch and how much staging or safety equipment the job needs. We confirm whether any prior layers are on the roof already — code allows a maximum of two before a full tear-off is required — and then you get a written per-square price with tear-off and any deck repair as separate lines.

If we think repair is the better spend than replacement, or a different material suits your situation better, we say so on that visit — including when it means the smaller job for us.

What's included

On-site inspection to confirm the roof actually qualifies for a recover — one existing shingle layer, sound deck, no active leaks
Written price before any work starts, showing the savings versus a full tear-off
Furring strip or batten system installed over the shingles where the panel system requires an air gap for condensation control
High-temperature synthetic underlayment installed per manufacturer spec for a recover assembly
Panel system installed per the same fastening and finish standards as a tear-off install
New flashing at all penetrations, chimneys, and wall tie-ins
Snow guards where the roof overhangs an entry, walkway, or lower roof
Full site cleanup

What this costs in Boise

Metal Roofing Over Existing Shingles runs $900–$1,600 per roofing square installed in this area. 2026 installed pricing for standing seam or exposed-fastener recover installs, roughly in line with a standard install minus tear-off/disposal cost. The things that move a job up its range are tear-off, how much deck repair is needed, pitch, and how many valleys and penetrations your roof has. If you want a number before you call, the roof cost calculator will get you close.

When it needs doing

Single-layer shingle roof in otherwise sound condition, ready for an upgrade to metal
Want to avoid tear-off cost and disposal time
Deck confirmed sound with no active leaks or rot

DIY metal panels, the cheapest bid, or the job done properly

	DIY weekend	Cheapest bid	Done properly
Panel fastening	Exposed screws driven by hand, spacing eyeballed	Exposed-fastener panels, minimum screw count to hit budget	Floating-clip standing seam or properly spaced exposed-fastener, matched to Boise’s thermal swing
Panel grade	Bargain galvanized off the shelf, no finish warranty	Standard galvanized, coating warranty rarely disclosed	Galvalume or better with a real paint-system warranty, disclosed in writing
Underlayment	Whatever’s left over, felt paper reused	Minimum-code synthetic underlayment	High-temp synthetic rated for the deck’s full range, ice-and-water membrane at valleys
Snow retention	Not considered	Skipped unless asked	Snow guards placed over entries, walkways, and lower roofs where sheet-slide is a real risk
Permit	Often skipped	Sometimes skipped	Pulled and inspected every time
If it fails	Your weekend, again, now with sharp trimmed edges	Chasing a phone number that stopped working	We come back and fix it

How it works

How metal roofing over existing shingles runs

01
Free qualification inspection
We check layer count, deck condition, and code eligibility before quoting a recover — some roofs genuinely need a tear-off instead, and we say so.
02
Permit and panel order
We pull the recover permit and order the panel system for your roof.
03
Recover install
Furring or battens go down where the system requires an air gap, then underlayment, flashing, and panels are installed to the same spec as a standard tear-off job.
04
Inspection and walkthrough
Final inspection, cleanup, and we walk the finished roof with you.

Get a free metal roofing over existing shingles estimate

A real person answers. We walk the roof with you, check the deck, and give you a written per-square price — at no charge and with no pressure.

Call (208) 279-6903

Questions

Metal Roofing Over Existing Shingles questions

Can any roof get a metal recover over shingles?

No — it depends on layer count (typically one existing layer, not two), deck condition, and local code. We check this at the free inspection before quoting; if your roof doesn't qualify, a tear-off is the honest recommendation.

Does metal over shingles need special ventilation?

Often yes. Trapping moisture between the old shingle layer and new metal panel without an air gap or adequate ventilation can cause condensation problems — this is why furring strips or battens are frequently required on a recover assembly, not optional trim.

How much do I save versus a full tear-off?

Mainly the tear-off labor and disposal cost, which typically runs $40-100 per square on a shingle tear-off — the panel material and install labor cost roughly the same either way.

Will this hide a bad deck?

That's the real risk, and it's exactly why the inspection matters — a recover doesn't let us see or fix a compromised deck the way a tear-off does. If we suspect deck issues, we'll recommend a tear-off instead of a recover that could mask the problem.

Do you charge for an estimate?

No. Estimates are free across Boise and the Treasure Valley, including the drive. We walk the roof with you, check the deck from the attic side where we can, and hand you a written per-square price with tear-off and any deck repair broken out as their own lines.

Also worth a look

Related services

Metal Roof Replacement

Full tear-off metal roof replacement for Boise and Treasure Valley homes — standing seam or exposed-fastener, matched to your budget and roof design, with a written per-square price before any work starts.

Exposed-Fastener Metal Roofing

Corrugated, R-panel, and 5V-crimp exposed-fastener metal roofing — the budget-conscious metal option, installed with the fastener spacing and sealing this climate actually needs, with a written per-square price before any work starts.

Standing Seam Metal Roofing

Concealed-fastener standing seam roofing with a floating-clip system engineered for Boise's wide temperature swing — steel or aluminum, snap-lock or mechanical seam, with a written per-square price before any work starts.