The Edmonds Homeowner's Seasonal Guide to Second-Story Additions
Key Takeaways The Golden Window: June through August is the ideal time for roof removal and framing to minimize exposure to PNW rains. Permitting Lead…
Another Story SEA · Second-Story Specialists
The Edmonds Homeowner's Seasonal Guide to Second-Story Additions
July 28, 2026 · Second-story additions · Edmonds, WA
Photo: PacificProGroup.com source
Key Takeaways
- The Golden Window: June through August is the ideal time for roof removal and framing to minimize exposure to PNW rains.
- Permitting Lead Times: Planning should begin in late winter or early spring to align permit approvals with summer construction starts.
- Envelope Strategy: Prioritize high-performance windows and weather-resistive barriers to protect the home during the “open-roof” phase.
- Winter Interior Focus: Use the rainy season for interior finishes, waterproofing, and painting once the structure is dried-in.
Timing a second-story addition in the Puget Sound region isn’t just about convenience; it is about risk management. In Edmonds, we deal with a specific set of challenges: older housing stock that may not have been engineered for additional loads, tight lot-line restrictions that make outward expansion impossible, and a climate that can turn from a sunny July afternoon to a torrential downpour in hours.
As a construction manager at Another Story SEA, a division of Pacific Pro Group, I have seen the difference between a project timed for the elements and one that fights them. When you expand upward, you are essentially removing the lid of your home. This creates a window of vulnerability that requires a strategic seasonal calendar to navigate safely.
Spring: The Planning and Permitting Phase (March – May)
Multiple project photos from PacificProGroup.com · click any image to open the source page · Another Story SEA division
Spring is not the time to be swinging hammers; it is the time to be refining blueprints. In Edmonds and Shoreline, permitting for vertical expansions can be complex. We have to account for height restrictions and ensure that the existing foundation can support the new weight of a second floor.
During these months, we focus on the design-build process. This is where we determine how to maximize views of the Sound or the Olympic Mountains while staying within city codes. If you wait until June to start your permit application, you will miss the best weather window for structural work.
We use this period to spec out the high-performance components that will keep the home safe. For example, we often select Marvin Windows and Doors during this phase because their premium packages are designed to handle the coastal exposure and wind loads typical of the Puget Sound shoreline.
Summer: The “Roof-Open” Window (June – August)
This is the most intense part of a second-story addition. To build up, we must remove your existing roof. This is the period of maximum risk. If you are unlucky enough to have a freak July storm while your home is open to the sky, the results can be disastrous.
The goal during summer is “Dry-In” speed. We move from demolition to framing and roofing as quickly as possible. Once the new roof is on and the Marvin Windows and Doors are installed, the home is sealed.
Many of our clients in Woodway and Mountlake Terrace also want to integrate outdoor living into their expansion. We often install Trex composite decking for upper-level balconies during this window. Composite materials are essential here because they withstand the PNW humidity far better than traditional pressure-treated wood, which tends to warp and crack in our cycle of wet winters and dry summers.
Autumn: Closing the Envelope (September – November)
As we move into September, the focus shifts from structural framing to exterior skinning. The objective is to ensure the home is completely watertight before the November rains arrive.
This is when we apply pro-grade exterior finishes. We rely on Sherwin-Williams coatings for siding and trim because their industrial-grade products provide the necessary barrier against moisture penetration. In a coastal environment like Edmonds, salt air and constant dampness can degrade cheap paint in a matter of seasons.
If we are adding an upper-level deck or walkway, we finalize the Trex composite decking installations now, ensuring all flashing is perfect so that water sheds away from the house structure.
Winter: Interior Refinement (December – February)
Once the home is “dried-in,” the weather outside becomes irrelevant to the progress of the project. Winter is for the details. This is when we tackle electrical, plumbing, and high-end finishes.
For those adding new primary suites or bathrooms on the second floor, waterproofing is the priority. We use Schluter Systems for tile waterproofing assemblies. In older Edmonds homes, moisture management is a historical struggle; using a modern system like Schluter ensures that your new luxury bath doesn’t become a source of leaks for the first floor.
Finally, we move into the aesthetic phase. We apply Benjamin Moore paint to create the interior atmosphere. Homeowners recognize these finishes for their quality and depth, which is essential when you are trying to make a new second story feel like it was always part of the original home’s architecture.
Materials Worth Knowing
Choosing materials for a vertical expansion requires a focus on weight, durability, and moisture resistance. Final specs are always project-specific and decided with our design-build team at Another Story SEA.
- Marvin Windows and Doors: Essential for coastal homes. They provide the thermal efficiency needed to heat a second story in January while resisting the wind of the Puget Sound.
- Trex composite decking: We use this for upper-level balconies to eliminate the constant sanding and staining required by wood in our rainy climate.
- Sherwin-Williams coatings: These pro-grade coatings protect the exterior envelope from the relentless PNW dampness, preventing rot and peeling.
- Schluter Systems: The gold standard for waterproofing new upper-level bathrooms, ensuring that water never reaches the structural joists of the floor below.
- Benjamin Moore paint: High-end interior and exterior finish systems that provide a professional, polished look to completed expansions.
Living Through Construction: The Reality
A second-story addition is more disruptive than a kitchen remodel. You are essentially living under a construction site. For many of our clients in the greater Puget Sound area, we recommend one of two paths: moving out temporarily or “zoning” the house.
If you stay, you must accept that your daily routine will involve dust and noise. We manage this by creating strict boundaries. However, the most stressful period is the roof-open phase. During these few weeks, your home is a shell. We prioritize the installation of temporary weather protection, but the mental toll of seeing your ceiling gone can be high.
Communication with neighbors is also vital. In tight-knit communities like Edmonds and Woodway, lot-line limits mean our equipment may be close to your neighbor’s fence. A proactive conversation about construction hours and parking prevents disputes before they start.
FAQ: How long does the “roof-open” phase actually last?
Depending on the size of the expansion and weather conditions, the home is typically open for 2 to 4 weeks. We use heavy-duty temporary coverings, but our goal is always to get the new roof structure in place as fast as possible.
FAQ: Can I start a second-story addition in November?
It is highly discouraged. Starting a vertical expansion in late autumn means you are removing your roof just as the heaviest rains arrive. This increases the risk of water damage and slows down framing progress significantly.
FAQ: Do I need to reinforce my first floor before adding a second story?
Almost always. Most older homes in the Puget Sound region were not built to carry the load of an entire additional floor. We perform structural audits to determine if we need to sister joists or add columns to ensure the home remains stable and safe.
Resources & Links
- Another Story SEA
- Pacific Pro Group
- Marvin Windows and Doors
- Trex composite decking
- Sherwin-Williams coatings
- Schluter Systems
- Benjamin Moore paint
Popular Materials on Major Projects
Referenced for homeowner education. Your project specifications are selected with Another Story SEA / Pacific Pro Group.
- Schluter Systems — tile waterproofing assemblies for new upper baths
- Benjamin Moore paint — interior/exterior finish systems homeowners recognize on completed projects
- Sherwin-Williams coatings — pro-grade coatings for new siding, trim, and interiors
- Trex composite decking — low-maintenance decks and upper-level outdoor connections
- Marvin Windows and Doors — premium window packages for coastal light and weather exposure
About Another Story SEA
Another Story SEA is a division of Pacific Pro Group specializing in second-story additions across Edmonds and the greater Puget Sound. We help homeowners grow up — not out — with design-build expertise, permitting support, and coastal construction standards.
Office 144 Railroad Ave Ste 307
Edmonds, WA 98020Contact (206) 446-5656
anotherstorysea.comLicensing WA State Contractor
Lic #: PACIFPG765OF
Ready to Add Another Story?
Talk with the second-story specialists at Another Story SEA — a division of Pacific Pro Group.
