---
title: "E. T-sections"
url: https://formtechsys.com/protip09/
description: "Installation guide step: E. T-sections. Joining an intersecting wall to a through wall."
published: 2026-08-17
updated: 2026-08-17
---

# E. T-sections

Published 2026-08-17

[Formtech](https://formtechsys.com/) › [Installation guide](https://formtechsys.com/protips/) › E. T-sections

Joining an intersecting wall to a through wall.

Measure, mark and cut the interior panel of the block the T is joining, block A, to the width of the cavity. Butt the intersecting block, B, flush to block A. Tie the first cavity web of block B to the closest cavity web of block A. Tape and foam joints.

Brace T-sections at intersecting points for extra support. T-sections should be braced with a 2 by 10 across from the abutting wall and 2 by 4s on the outside corners.