Swift Steel & Roofing Centre - Cape Town

28/04/2026

Swift Steel & Roofing
Branches: Western Cape
📍Brackenfell: Eagle St, Okavango Park
📍Parow: Carinus St , Beaconvale
Email: [email protected]
Whatsapp: 061 847 5477
Office: 021 928 8430

27/04/2026

27/04/2026

Anatomy of a Residential Roofing Eave

This technical illustration provides a cross-sectional view of a standard residential roofing system at the eave (the edge of the roof). It demonstrates the "stacking" method of materials required to ensure a building is watertight, highlighting how various layers—from the structural wood base to the final asphalt shingles—work together to shed water into a gutter system while protecting the underlying structure from ice dams and moisture infiltration.

Key Components & Features

Sheathing: The structural wood panel (typically OSB or plywood) that serves as the foundation for all other roofing materials.

Ice/Water Shield: A self-adhering waterproof membrane applied directly to the sheathing at the eaves to prevent damage from water backup caused by ice dams.

Underlayment: A secondary water-resistant layer (felt or synthetic) that covers the rest of the roof deck to provide protection against wind-driven rain.

Drip Edge: A L-shaped metal flashing installed along the roof edges to direct water away from the fascia and into the gutter.

Starter Shingle: The initial layer of shingles installed at the eave to provide a waterproof seal and transition for the first visible course of shingles.

Shingle: The primary exterior layer (usually asphalt) designed to shed water and protect the home from the elements.

Outside Wall & Gutter: The structural support and the drainage channel that carries runoff away from the home's foundation.

System Overview

The image effectively illustrates the "layered defense" strategy used in modern construction. By showing the precise overlap of the drip edge, membranes, and shingles, it highlights how gravity and material placement are engineered to keep moisture out of the wall assembly. This sequence is critical for long-term structural integrity, ensuring that water is consistently diverted off the roof and safely away from the building’s exterior walls.

28/02/2026

Bolt or Weld Which one would you say is stronger?
Tell us why?

31/12/2025

Why Grinders Are Discouraged (But Sometimes Used)
Damage to Coating: Heat from the abrasive disc burns off protective galvanization or paint, leading to rust.

Swarf: Creates metal shavings (swarf) that stick to the roof, rust, and stain it.

Safety: Sparks are dangerous (fire hazard) and fragments fly off; gloves and goggles are essential.
Rough Edge: Leaves a burred, sharp edge that needs filing.

How to Do It (If You Must)
Safety Gear: Wear safety goggles, gloves, and protective clothing.

Tools: Use a 4-inch (115mm) grinder with a 1.2mm or thinner metal cutting disc.

Mark: Draw a straight line with a marker and level.
Secure: Clamp the sheet down to prevent flapping.
Cut: Start with a small nick, then slowly follow the line, letting the grinder do the work.

Finish: Use a file to smooth sharp edges and remove all swarf immediately.

Recommended Alternatives (Better Options)
Tin Snips/Shears: Best for straight cuts, clean edges, no heat/rust issues.

Nibbler/Shear Attachment: Fits an impact driver, makes clean cuts, great for curves.
Circular Saw: With a fine-tooth blade for plastic/polycarbonate sheets.

For longevity and safety, especially with coated metal roofing, use shears or snips to avoid damaging the protective finish.

13/12/2025

Swift Steel & Roofing
Branches: Western Cape
Brackenfell: Eagle St, Okavango Park
Parow: Carinus St , Beaconvale
Email: [email protected]
Whatsapp: 061 847 5477
Office: 021 928 8430

08/12/2025

Swift Steel & Roofing
Branches: Western Cape
Brackenfell: Eagle St, Okavango Park
Parow: Carinus St , Beaconvale
Email: [email protected]
Whatsapp: 061 847 5477
Office: 021 928 8430