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Flexible aluminum tape used to seal watertight connections between the roof and chimney and wall.

The name "3D" refers to the fact that the flashing is not a simple, flat piece of aluminum or sheet metal, but has a three-dimensional shape that better fits the connection between the roof and the chimney.

This allows for more effective water sealing, as the flashing "clings" to the side of the chimney and better surrounds it.

The 3D shape is particularly useful if the chimney masonry is not completely straight or if the roof and chimney cannot be fitted together using a simple flat solution.

🔧 Material and construction

It is usually made of aluminum sheets, as aluminum is lightweight, corrosion-resistant, and easy to bend.

It can be flexible (bendable aluminum), which helps to ensure a precise fit.

The outer surface is often coated, painted – for example, with a weather-resistant coating – to withstand rain, snow, and sunlight.

✅ Features and benefits

Waterproofing: Prevents precipitation from seeping in at the junction of the chimney and roof.

Aesthetics: The 3D shape can be more aesthetically pleasing and gives the roof a professional look.

Flexibility: The bendable parts allow it to be used with different chimney profiles.

Durability: High-quality aluminum flashing is long-lasting and requires little maintenance.