AB Style Construction

12/09/2026

03/09/2026

A roof assembly is more than the material you see from the outside.
This cross-section shows how the layers work together:
* The roof covering sheds rain and protects the structure.
* Underlayment and sheathing provide the next level of weather protection and structural support.
* Insulation within the rafter space helps improve thermal performance.
* Strapping creates a secure base for the roof assembly while supporting proper detailing.
* The interior air barrier helps control unwanted air movement through the building envelope.
Each layer has a specific role, and the way they interact is what makes the assembly perform properly.
Understanding these details is useful when reviewing roof designs, planning renovations, or evaluating how a building manages moisture, heat, and airflow.

27/08/2026

Brick Veneer Wall Assembly and Moisture Control System

This technical diagram illustrates a cutaway 3D architectural detail of a wood-frame wall with an exterior brick veneer cladding. It highlights the layered construction techniques used to manage thermal performance, structural stability, and water drainage in residential or light commercial buildings. Proper integration of these elements ensures moisture penetrating the outer brick layer is safely redirected outward, preventing decay and structural degradation within the internal wall cavity.

Key Components & Features

Brick Veneer: Non-structural outer masonry wythe that acts as the primary weather barrier and exterior finish.

1" Airspace: Drainage cavity between the brick veneer and building paper that allows water to trickle down and provides ventilation.

Weep Holes: Openings located in the bottom mortar joints that permit accumulated moisture inside the wall cavity to drain outside.

Through-Wall Flashing: Impermeable barrier installed above openings and at the wall base to intercept and direct water toward weep holes.

Weather-Resistant Building Paper: Secondary moisture barrier installed over the exterior sheathing to protect the wooden frame from liquid water.

Corrugated Metal Tie: Galvanized metal connector anchored to the wood studs that laterally stabilizes the brick veneer.

Lintel: Structural steel angle providing support for the brick masonry directly above window and door openings.

Wood Studs & Sheathing: Load-bearing timber framing and engineered wood panels forming the structural inner wall assembly.

Insulation: Fiber batts set between wall studs to provide thermal resistance and improve energy efficiency.

Gypsum Board: Interior drywall lining attached to the studs, serving as the inner wall surface.

Foundation Wall & Base Assembly: Concrete base combined with bituminous waterproofing, sill sealer, and plates to transition structural loads and block ground moisture.

Overall Interpretation

The diagram demonstrates a cavity wall system engineered for effective drainage and thermal protection. By pairing an outer masonry barrier with internal moisture paths, structural ties, and layered insulation, the assembly balances aesthetic appeal with durable building science principles.

22/08/2026

Flashing Diverting Water from Deck Ledger

This technical diagram illustrates a proper flashing and water management system designed for a deck ledger attachment to a building wall. The assembly demonstrates how integrated weather-resistive barriers and metal flashing redirect moisture away from structural wood framing, preventing decay and structural failures caused by trapped water.

Key Components

Insect and Rot-Resistant Treated Ledger: Structural timber mounted to the wall framing to support deck joists using metal joist hangers.

Self-Adhesive Membrane: Flexible waterproofing installed directly against the wall sheathing behind and around the ledger assembly.

"L" Shaped Metal Flashing: Painted or galvanized flashing positioned above and below the ledger with sloped bottom edges to shed moisture outward.

Building Paper / Housewrap Drainage Plane: Layered water-resistive membrane integrated over the top leg of the flashing to maintain continuous drainage down the wall face.

Drip Edge Flashing: Metal profile designed to direct water runoff away from the top edge of the ledger and siding interface.

System Overview

By layering self-adhesive membranes, L-shaped metal flashing, and overlapping building paper, this detail ensures water is shed outward rather than penetrating structural connections. Proper ex*****on of these water-management layers protects both the deck ledger and the house framing from rot and long-term moisture damage.