An internal corner is formed on an L shaped roof and this will require the 9" Elastoform tape
How to Install an L Shaped EPDM Flat Roof Video and Installation Guide
Step by Step Installation Guide
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Cut EPDM
Cut the Rubber membrane in to the corner at an angle.
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Cut Elasoform Tape to Size
Cut Elastoform Tape to size with a pair of scissors.
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Mark Position of Elastoform Tape
Mark area to be primed allowing an extra 3-5mm on all edges.
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Apply Rubber Primer
Apply Rubber Primer and ensure touch dry.
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Check Rubber Primer is Dry
Apply Rubber Primer and ensure touch dry.
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Install Elastoform Tape
Install Elastoform Tape starting on the vertical drip and stretching the tape on to the roof deck. Apply pressure with silicon seam roller.
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Install Corner Trim
Install Corner Trim if using Quicktrim system