Bringing Certainty to ICF Window Detailing
Productisation of construction is about moving away from improvised, site made solutions and towards pre-designed, repeatable building components. Instead of relying on individual workmanship to resolve complex junctions on site, critical details are designed in advance a product that perform consistently every time it is installed which are accompanied with the detailed Instruction guide.
In ICF construction, this approach is particularly effective. ICF systems provide excellent speed, strength, and thermal performance, but overall success depends on how well vulnerable interfaces, especially window sill detailing and moisture protection are resolved. Productisation removes uncertainty by replacing one-off site solutions with defined systems that behave predictably.
The IZOTITE WindowTray System
The IZOTITE WindowTray system was developed in direct response to a long-standing industry gap. Many modern construction methods continue to rely on legacy detailing approaches that were never designed for system-built structures. Traditional DPC-style solutions have often been copied directly into newer build types without adapting to how these systems actually manage moisture.
The IZOTITE WindowTray takes a system-led approach to drainage and waterproofing at window sill level. It is designed around the key factors that govern water behaviour moisture presence, applied force, and direction of travel ensuring that water is collected, controlled, and positively discharged away from the building fabric. This transforms the window sill from a high-risk junction into a repeatable, dependable detail.
By establishing a defined drainage path at sill level, it removes reliance on sealants and assumptions, delivering a detail that works by design rather than chance.
Designed Once. Repeated Every Time.
Ultimately, productisation aligns perfectly with ICF construction. It ensures that critical details are resolved through design rather than interpretation on site. The IZOTITE WindowTray offers a robust, repeatable solution for one of the most moisture sensitive junctions in the building envelope. Installation Guide
If you are building with ICF and want a window sill detail that delivers consistent performance across every project, the IZOTITE WindowTray system is available to view in more detail below.
IZOTITE WINDOW TRAY - 20m roll – Kevins Building Supplies
