Cornerstone guide

Planning a Full Exterior Renovation: The PNW Homeowner's Guide

The Peaks & Valleys field teamWritten by the crews and inspectors on the roofs

Guide3 min readLast reviewed August 2, 2026How we research

The short answer

A full exterior renovation should be planned as one integrated project, not four separate ones. The correct sequence is roof first, then windows and doors integrated with the weather barrier, then siding over both, gutters last. Bundling saves 10–15% versus separate contractors and — critically — makes one company responsible for every seam where the systems meet.

Your home’s exterior isn’t four separate things — roof, siding, windows, gutters — that happen to sit near each other. It’s one continuous weather system, and it fails at the seams between those components far more than in the middle of any one. That single fact should shape how you plan a whole-home exterior renovation. Here’s the guide.

Why plan it as one project

When four different contractors handle four scopes on their own schedules, nobody owns the intersections — the roof-to-wall flashing, the window-to-housewrap seal, the gutter-to-drip-edge fit. Those intersections are exactly where water gets in and where warranties point fingers at each other. One contractor, one integrated plan means every seam is designed once and warrantied by one name.

It’s also cheaper: shared mobilization, shared tear-off logistics, and bundle pricing typically take 10–15% off versus buying the scopes separately.

The correct sequence

Order matters because each layer depends on the one before it:

Roof first. Everything below depends on the roof shedding water correctly. It also generates the most debris — you don’t want it falling on new siding.
Windows and doors next, integrated with the weather-resistive barrier (housewrap). Windows must be flashed into the water barrier, not just stuffed into holes and caulked.
Siding over both, lapping correctly over window flashing and tying into the roof edge.
Gutters last, fitted to the finished roof edge and drip edge, with drainage planned to carry water away from the new work.

Do it out of order — new siding before a roof tear-off, say — and you damage or compromise finished work.

What to fold in now — and what can wait

Component	Typical PNW lifespan	Fold it in now if…
Roof	20–25 yrs (asphalt)	Past ~15 yrs, or it feeds the wall you’re re-siding
Windows	20–30 yrs	Failed seals, drafts, or they interrupt the new siding plane
Siding	30–50 yrs (fiber cement)	Rot, failed paint, or trapped-moisture damage
Gutters	20+ yrs	Undersized, leaking, or the roof edge is changing

A good whole-envelope inspection grades each honestly — you don’t replace what still has years left.

What to assess before you start

Grade every system honestly. Some may have years left. A good whole-envelope inspection tells you what genuinely needs doing now versus what can wait, so you’re not replacing serviceable components.
Integration points. Where roof meets wall, where windows meet siding — these get designed deliberately, not improvised.
Budget and phasing. You don’t have to do it all at once.

Phasing across seasons

A smart master plan can be executed over two or three seasons without losing the integration benefit: lock the design decisions and materials up front, then execute roof this year, siding and windows next. Done this way, phasing costs nothing extra in our pricing and spreads the investment. The key is that the plan is unified even if the timeline isn’t.

The payoff

One contract, one warranty, one project manager, one before-and-after that genuinely changes what your house is — and a building envelope engineered as the single system it actually is. That’s the case for planning it whole.

Considering a full exterior project? Book a free whole-envelope assessment — we’ll grade every system and build a phased master plan. See full exterior renovation.

Finished James Hardie siding on a blue lakeside home in Lake Stevens

See it on a real jobBoom-Era Home Rewrapped in James HardieLake Stevens, WA · 2001-built two-story with failing LP-era composite siding: paint refusing to hold, soft spots below two window corners, and a woodpecker who had found all of them.

Sources & methodology

International Residential Code R703 — exterior walls, flashing & weather-resistive barrier
International Residential Code R903 — roof flashing & drainage

Insurance, permit and code details vary by policy and jurisdiction. This guide is general information from our field experience, not individualized professional advice.

Questions homeowners actually ask

Why plan roof, siding, and windows as one project instead of separately?

Because the exterior fails at the seams between components — roof-to-wall flashing, window-to-housewrap seal, gutter-to-drip-edge fit — far more than in the middle of any one. Four contractors on four schedules means nobody owns those intersections and warranties point fingers. One integrated plan designs every seam once and warranties it under one name.

What's the correct order for an exterior renovation?

Roof first (everything below depends on it shedding water, and it makes the most debris), then windows and doors integrated into the weather-resistive barrier, then siding lapping over the window flashing and tying to the roof edge, then gutters fitted to the finished edge last. Out of order — new siding before a roof tear-off — damages finished work.

Does bundling the whole exterior actually save money?

Typically 10–15% versus buying the scopes from separate contractors — shared mobilization, shared tear-off logistics, and bundle pricing. The bigger value is single accountability for every seam where the systems meet.

Do I have to do it all at once?

No. A unified master plan can execute over two or three seasons without losing the integration benefit — lock the design and materials up front, then do roof this year, siding and windows next. In our pricing, phasing a pre-planned project costs nothing extra; the plan is unified even when the timeline isn't.