Tips & tricks — Leader head with emergency overflow | PREFA

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Preparation for creating an emergency overflow in a PREFA leader head — Step 1: Position and mark.

Step 1 — Position and mark the emergency overflow.

How to create a DIY emergency overflow in a PREFA leader head — Step 2: Pre-drill hole.

Step 2 — Pre-drill hole.

Step 3 for creating an emergency overflow in a PREFA leader head — Cut out a hole around the marking.

Step 3 — Cut out hole around the marking.

Diagonally cut the PREFA outlet with bonding flange (made of uncoated material).

Step 4 — Diagonally cut PREFA outlet with bonding flange.

Roughen the bonding flange on the PREFA outlet in plain aluminium.

Step 5 — Roughen bonding points of leader head and emergency overflow.

PREFA adhesive remover for cleaning bonding flanges.

Step 6 — Clean emergency overflow with PREFA adhesive remover.

Cleaning the PREFA leader head with PREFA adhesive remover.

Step 7 — Clean PREFA leader head with PREFA adhesive remover.

Apply PREFA special adhesive to the bonding flange.

Step 8 — Apply PREFA special adhesive to flange.

Push the outlet with bonding flange through the PREFA leader head from the inside (the longest side of the PREFA outlet should be at the bottom).

Step 9 — Push PREFA outlet with bonding flange through hole from the inside (position outlet so that the longest side is at the bottom).

Clean the PREFA leader head after pushing the outlet through the hole – remove any excess PREFA special ad-hesive.

Step 10 — Remove any excess adhesive.

PREFA leader head in plain aluminium with finished DIY emergency overflow.

Step 11 — Finished PREFA leader head with emergency overflow.

The leader head with emergency overflow is not intended for use as an emergency drain!

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