Remodeler Mike Sloggatt finishes off this replacement-window project and teaches you how to install interior extension jambs.

In this video I show how to measure, cut, and install extension jambs so you can fill the space between your window and the casing.

May 15, 2025 · Interior extension jambs are added to the inside edge of the window and patio door unit frames to create a consistent transition between the window unit and interior …

The Andersen Pine Extension Jamb (4-Pack) allows 1 window to be installed into a 6-9/16 in. thick wall. This set offers a way to create a consistent wood transition between the window unit …

A jamb extension does precisely what the name suggests. It’s a frame that fills the depth of the wall space from the inside face of the window frame or ” jamb” to the face of the plaster or …

When installing vinyl or other windows and sometimes doors, you may need to add an extension jamb installation. This is particularly difficult in older homes that have thicker walls or newer …

Dec 5, 2023 · In this article, we will guide you through the process of how to install window jamb extensions, allowing you to extend the depth of your window frames to accommodate thicker …

Aug 7, 2021 · A step-by-step DIY tutorial on how to install window jamb extensions, the perfect details to easily update your home. It’s funny how tackling the smallest, most tedious things …

Nov 25, 2025 · Our new-construction S-Series and OceanView product lines offer both factory applied jamb extensions and interior colonial casing on geometric products.

Jun 26, 2024 · Jamb extensions are additional interior window components added to the depth of a standard window jamb to accommodate thicker walls. They’re used to ensure a proper fit …