Wildfire Resilience: A Window Install That Works in a WUI Zone – GreenBuildingAdvisor

By Joshua Salinger | February 4, 2026

This is part 3 of the Energy Smart Details series where we are examining critical details from Evan and Linda’s fire rebuild on the Clackamas River just outside Portland, Ore. You can read part 1 here, part 2 here, and the lead-in to the series here.

Proper window installation is essential in crafting a durable home. At every opening, all four control layers—water, air, vapor, and thermal—must be continuous and comprehensive from the wall to the window. We need to keep water out, make the installation airtight, and avoid thermal bridges while still installing windows in a labor‑efficient way.

Why window detailing matters in the WUI

When you add a fully vented rainscreen, exterior insulation, and fire resiliency goals, the details can quickly become complicated, introducing thermal bridges, and increasing the risk of field installation errors. The aim is to keep the window detail as simple and buildable as possible while still meeting all of these performance goals.

In part 3 of the Energy Smart details post of Linda and Evan’s fire rebuild, we are going to describe how the team at Birdsmouth Design-Build navigated the above variables and came up with a simple yet highly effective window installation that meets all of the project team’s goals for durability, comfort, resilience, and energy efficiency.

Managing overheating and shading with recessed windows

For this project, the energy model flagged a risk of overheating due to the generous glazing used to capture the river views. To help mitigate that, we set the windows deeper into the wall assembly to provide additional shading. Recessed windows also improve weather protection and add visual depth, giving the facade a subtle sense of strength and quality.

A simple, buildable installation sequence

With those goals in mind, we chose flangeless triple‑pane Innotech windows with a…