Last updated: 2026-08-19
Roof Replacement Boise is a roofing company serving Boise and the Treasure Valley, and steep-slope roof replacement 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 pitch assessment and a written per-square price that already includes steep-pitch labor, not an add-on sprung on you later
- Roof anchors, harnesses, and fall-protection staging set up before any tear-off begins
- Full tear-off to the deck, with extra debris control on 8/12-and-steeper sections
- Deck inspection and replacement of any rotten or delaminated sheathing, priced as its own line
- Ice-and-water shield at eaves, valleys, and penetrations; synthetic underlayment across the field
- Manufacturer-spec fastening adjusted for the slower footing and wind exposure steep pitches see
- New flashing at chimneys, walls, and vents — not reused off the old roof
- Full site cleanup with a magnet sweep for dropped nails and haul-away of the old roofing
What this costs in Boise
Steep-Slope Roof Replacement runs $550–$1050 per roofing square installed in this area. Architectural asphalt shingle base pricing ($450–$850/square, RESEARCH.md price bands) with the +25% steep-pitch labor multiplier from our own pricing calculator (calculator.json) applied to 8/12-or-higher roofs — more safety equipment, slower staging, higher labor cost per square.. 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
- Shingles worn unevenly on south- or west-facing steep sections from UV exposure
- Granule loss showing up faster than on lower-pitch roofs nearby
- Visible sagging or wavy sheathing lines seen from the ground or a neighboring lot
- Missing or lifted shingles after a wind event, more common on exposed steep foothills rooflines
- Water staining on interior ceilings below valleys or dormers
- Roof is original to a 1990s–2000s Eagle foothills build now in its 20–30 year window
Related reading
These go deeper on the questions that come up most on this job: