Aluminum Glazing Extrusions

Professional-grade aluminum glazing systems for enhanced structural integrity and lasting performance

System Overview

An aluminum glazing system is made of specific extrusions for glass or any solid transparent sheathing such as multi-wall polycarbonate panels, lexan, Plexiglas, or acrylic sheets

Durable Design

Pro-Seal quality extruded aluminum glazing system that does not degrade over time

Linear Clamp System

Acts like a large linear clamp that can span long distances with structural support

Versatile Compatibility

Works with wood, steel, glue-lam frames, and other support structures

Need Help Deciding?

If you are unsure about building with an aluminum glazing system, contact Ralph for details and expert guidance on your project

Glazing Application Categories

Two distinct categories for different structural applications

Vertical Applications

Covers walls using a picture frame approach with 45 degree joints at each corner

Sloped Applications

Covers roofs using bevel perimeter assembly at the bottom end of the roof

Assembly Selection Guide

Perimeter Assembly: Use for top, bottom, and ends when glazing from end to end

Mullion Assembly: Join two sheets between posts or rafters (uses same cap as Perimeter)

Three Essential Profile Types

Simplified system with only three profile types for complete installation

EDPM Glazing Rubber

Rubber should extend past the glazing bar to snugly touch the Perimeter rubber. Cut slightly long as rubber shrinks when exposed to sunlight.

Structural Requirements

Understanding the support framework needed for proper installation

Important Note

Pro-Seal aluminum glazing bars are not structural by themselves. The system must be placed on top of a structural support framework.

3 Inch Surface

The goal is a 3 inch wide surface to attach the aluminum glazing assemblies securely to the support structure.

Suitable Support Structures

Wood Construction

Other Materials

Wood Protection Recommendation

Exposed wood beams should be stained and sealed with two coats of sealer. This keeps the wood long lasting and protects it from UV damage.

Installation Guidelines

Step-by-step procedures for proper installation

Pre-Drilling Requirements

Aluminum glazing systems do not come with pre-drilled holes. Pre-drill before installation.

Base Bars (7/32" bit):

Every 15-18 inches, start 2″ from ends

Cap Bars (9/32" bit):

Every 12-16 inches, start 1″ from ends

Weep Holes & Setting Blocks

Critical for proper drainage and glazing support

Weep Holes (3/16" bit):

Two per bay, 4-6″ from each end

Setting Blocks:

Place away from weep holes, closest to corners

Glazing Size Specifications

Pre-Drilling Requirements

All glazing units must be 1 1/4 inches smaller than the actual opening

Best Practice

Measure every bay individually and label each measurement

Measure from: Outer edge of EDPM rubber

Side to side: Full bay width

Height: Setting block to top rubber edge

Installation Procedures

Start with Top Perimeter Bars

Use a string line from end to end. Ensure bar is even and equally distant from top corners. Caulk back side where needed. Miter top corners at 45°.

Install Side Base Bars

Make sure sides are square with frame and top Perimeter bar. Miter top corners and caulk the splice.

Install Vertical Mullion Bars

Place onto rafters. Butt top of each Mullion to inside top of Perimeter bar. Align bottom with lower Perimeter bar.

Install Purlin Base Bars

Fill screw holes with clear silicone. Position between Mullion bars with notched ends overlapping Mullion gutter edge by 1/8" to 1/4".

Flashing & Leak Prevention

Critical steps for a leak-proof installation

Flashing is Required

Flashing must be used with any aluminum glazing system. Flashing at the top, bottom, and sides is project specific and recommended for a leak proof installation.

Bottom Flashing

Run sill flashing continuously under bottom Perimeter base bar and vertical Mullion. Overlap 4-6" with silicone caulk.

Top Flashing

Run continuous flashing over top Perimeter cap, crease downward. Ridge cap covers top bar flashing for double layer protection.

Side Flashing

Clamp continuous flashing between Perimeter base bar and cap. Bend to rake at outer edge of rafter or structure end.