Lead Weatherproofing on Flat Roofs: Components, Codes and Specification Introduction Flat roofs place different demands on weatherproofing than pitched roofs. Water runs off slowly because
Why Chimneys Are One of the Most Vulnerable Points for Water Ingress Water moves differently when it hits a chimney on the roof. At the
Introduction: Where windows meet exterior walls, particularly on dormer builds, the risk rises. Water can track behind the window frame, slip behind the cladding, and
Introduction Choosing roof vents isn’t just about airflow; it’s a decision that affects your roof’s appearance, lifespan, and long-term cost. The material you choose affects
What is the Lead Sheet Training Academy? The LSTA (originally established as the Lead Sheet Association, or LSA) was founded to promote, support and set
There are many different types of lead, because sheet lead metal comes in several forms. Because processing methods differ, so do their structure. Variations arise
The angle of a roof is a measure of the underside of the roof from the horizontal as shown in the diagram. If you can
Not many roof materials last like lead flashing does. Installed well, it sticks around far longer than newer options – think decades, maybe lifetimes. Centuries
In the UK, the thickness of lead codes is standardized mainly for applications like roofing, cladding, flashing, and weatherproofing. These are classified into “Lead Codes,”
Lead dormer flashings are crucial for keeping water out where dormers meet the main roof. These junctions create multiple weak spots where water can get
LEADWORX TOOLS
Calculate from measurements, or estimate the angle from a photograph.
Measure the vertical rise and horizontal run between the same two points.
Use the same unit for both, such as mm or cm. Run is not the sloping roof length or automatically the full building width.
Enter your measurements to begin.
Enter measurements first.
These formats describe the same slope; they are not product size recommendations.
Use a square-on view of the roof profile, with a known horizontal reference in the same plane.
The photo box opens your camera on supported phones and tablets. On a computer, choose a photo file or drop one into the box.
Processed on your device by this tool. JPG, PNG or WebP, up to 20 MB and 24 megapixels. Export HEIC as JPG first.
Tap the photo box or choose a saved photo.
Tap four points: two on the roof slope, then two on a level reference. Drag points to adjust. Use long lines for a better estimate.
Focus the photo. Arrow keys move the marker; Shift moves 10 pixels. Enter adds a point. Select a placed point below to adjust it with the arrows. Escape returns to the free marker.
No points placed.
Mark the photo first.
The reference line corrects camera tilt, not perspective or lens distortion. A photo cannot guarantee the angle needed for manufacture.
Switch to English