For abutment walls install the rafter roll
out tray and fix to the end rafter
By adding a continuous roll out rafter
tray to your roof it will provide a clear
ventilation path to the underside of the
roofers underlay Envirolay (ENVIROLAY).
Affix the roll over and between
independent rafters along the whole
width of the roof (as illustrated) position
directly behind the ventilated fascia board
area.
It is recommended that a minimum
of 2 galvanised clout nails are used to
permanently fix the continuous roll out
rafter tray to each independent rafter.
VENTILATION: FITTING THE CONTINUOUS ROLL OUT RAFTER EAVES VENT TRAY
Prior to beginning the roof it is critical that the roof area that is to be covered with roof
tiles is level and square before installation.
Always provide the correct ventilation requirements at the
eaves soffit area.
Note: The roof pitch governs the recommendations of airflow
per meter run required, on rafter pitches above 15 degrees
it will require 10,000 mm/m of airflow per meter run and on
pitches below 15 degrees 25,000mm of airflow per meter run
is required for conformity to recommendations outlined in
BS5250/2016.
90 degrees
level
Note that the roof images provided as content material are
indicative examples of standard roof types provided to assist
the installer with a visual perspective of the different stages of
the Envirotile installation process.
level
90 degrees
90 degrees
90 degrees
8
| E N V I R O T I L E I N S T A L L A T I O N G U I D E
5. SETTING UP
5.0
Summary of Contents for ENVIROTILE
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