Solar panel mounting system
Flood protection solutions
Coils and metal sheets
Request a guarantee certificate
Questions and answers
Your PREFA contact
Building material aluminium
Your PREFA contact
Construction tips overview
Coverings for every roof shape
Façade cladding in wood effect
Lightweight metal roof
Roof systems overview
R.16 roof tile
DS.19 roof shingle
Rhomboid roof tile 44 × 44
Rhomboid roof tile 29 × 29
FX.12 roof panel
Roof system Prefalz
Façade systems overview
Rhomboid façade tile 44 × 44
Rhomboid façade tile 29 × 29
Rhomboid façade tile 20 × 20
FX.12 façade panel
Aluminium composite panel
Façade system Prefalz®
Small rhomboid tile
Roof drainage overview
Half round gutter
Solar panel mounting system overview
Solar panel substructure
Flood protection solutions overview
Demountable flood barrier
Coils and metal sheets overview
Colour aluminium coils
For architects overview
Order our architectural brochure and architect folder
For installers overview
My PREFA Login
PREFA Advertising Material & Logos
Building material aluminium overview
Special topics overview
About us overview
Facts and figures
Our values and goals
Step 1 — Position and mark the emergency overflow.
Step 2 — Pre-drill hole.
Step 3 — Cut out hole around the marking.
Step 4 — Diagonally cut PREFA outlet with bonding flange.
Step 5 — Roughen bonding points of leader head and emergency overflow.
Step 6 — Clean emergency overflow with PREFA adhesive remover.
Step 7 — Clean PREFA leader head with PREFA adhesive remover.
Step 8 — Apply PREFA special adhesive to flange.
Step 9 — Push PREFA outlet with bonding flange through hole from the inside (position outlet so that the longest side is at the bottom).
Step 10 — Remove any excess adhesive.
Step 11 — Finished PREFA leader head with emergency overflow.
Ask our experts
Do you have any questions? PREFA experts provide advice and support. Simply call them or send an email.
We support our processing partners with practical installation instructions at the customer’s site. To avoid embarrassment during installation.
Log into the experts section. You can find work aids and technical information about our products there.