Right, doing my extension roof soon. Under-felt vented cold roof with
over-fascia vents (no soffits),
profiled concrete tiles.
As I understand it the eaves venting components are fitted as follows:
Fascia board (fixed to rafter ends).
On top of the fascia board goes the over-fascia vent.
Over the vent goes a felt support tray with the felt on top of it.
Over this goes the comb filler to fill the profiled tile voids. But,
how do you fix this without penetrating the felt ? And you surely
can't nail through the comb, felt, felt support tray and over-fascia
vents in order to fix it ?
Can someone explain how this is done.
Cheers,
Simon.

On Aug 4, 4:28*pm, sm_jamieson wrote:
Right, doing my extension roof soon. Under-felt vented cold roof with
over-fascia vents (no soffits),
profiled concrete tiles.
As I understand it the eaves venting components are fitted as follows:
Fascia board (fixed to rafter ends).
On top of the fascia board goes the over-fascia vent.
Over the vent goes a felt support tray with the felt on top of it.
Over this goes the comb filler to fill the profiled tile voids. But,
how do you fix this without penetrating the felt ? And you surely
can't nail through the comb, felt, felt support tray and over-fascia
vents in order to fix it ?
Can someone explain how this is done.
Cheers,
Simon.

Get the all in one over fascia felt support vent with comb,
interlocking type.
All you do is nail the unit into the rafter at one end only at the
top, interlock the next one. Nail at top again one end only and carry
on. When completed, nail to every rafter at the top of the units. The
underlay sits at the bottom at the back of the comb. Its best to fit
the units after lathing and felting but fit one on first to get the
correct over hang and up stand of the first course of tiles in to the
gutter. Don’t forget that the fascia board stands up above the rafter
foot 2" or 50mm for tilt. The units come in 25mm and 50mm up stand
vent. This must be taken into account when fixing the fascia board.

On 4 Aug, 21:43, Kipper at sea wrote:
On Aug 4, 4:28*pm, sm_jamieson wrote:

Right, doing my extension roof soon. Under-felt vented cold roof with
over-fascia vents (no soffits),
profiled concrete tiles.
As I understand it the eaves venting components are fitted as follows:
Fascia board (fixed to rafter ends).
On top of the fascia board goes the over-fascia vent.
Over the vent goes a felt support tray with the felt on top of it.
Over this goes the comb filler to fill the profiled tile voids. But,
how do you fix this without penetrating the felt ? And you surely
can't nail through the comb, felt, felt support tray and over-fascia
vents in order to fix it ?
Can someone explain how this is done.
Cheers,
Simon.

Get the all in one over fascia felt support vent with comb,
interlocking type.
All you do is nail the unit into the rafter at one end only at the
top, interlock the next one. Nail at top again one end only and carry
on. When completed, nail to every rafter at the top of the units. *The
underlay sits at the bottom at the back of the comb. Its best to fit
the units after lathing and felting but fit one on first to get the
correct over hang and up stand of the first course of tiles in to the
gutter. Don’t forget that the fascia board stands up above the rafter
foot 2" or 50mm for tilt. The units come in 25mm and 50mm up stand
vent. This must be taken into account when fixing the fascia board.

Thanks for that. Where can you get the combined unit from ?
Simon.

On Aug 4, 11:06*pm, Simon wrote:
On 4 Aug, 21:43, Kipper at sea wrote:





On Aug 4, 4:28*pm, sm_jamieson wrote:

Right, doing my extension roof soon. Under-felt vented cold roof with
over-fascia vents (no soffits),
profiled concrete tiles.
As I understand it the eaves venting components are fitted as follows:
Fascia board (fixed to rafter ends).
On top of the fascia board goes the over-fascia vent.
Over the vent goes a felt support tray with the felt on top of it.
Over this goes the comb filler to fill the profiled tile voids. But,
how do you fix this without penetrating the felt ? And you surely
can't nail through the comb, felt, felt support tray and over-fascia
vents in order to fix it ?
Can someone explain how this is done.
Cheers,
Simon.

Get the all in one over fascia felt support vent with comb,
interlocking type.
All you do is nail the unit into the rafter at one end only at the
top, interlock the next one. Nail at top again one end only and carry
on. When completed, nail to every rafter at the top of the units. *The
underlay sits at the bottom at the back of the comb. Its best to fit
the units after lathing and felting but fit one on first to get the
correct over hang and up stand of the first course of tiles in to the
gutter. Don’t forget that the fascia board stands up above the rafter
foot 2" or 50mm for tilt. The units come in 25mm and 50mm up stand
vent. This must be taken into account when fixing the fascia board.

Thanks for that. Where can you get the combined unit from ?
Simon.- Hide quoted text -

- Show quoted text -

You can get theses units from a roofing supply. Try the SIG group,
they have outlets in most areas, they are on Google. You might get
them from the larger builders merchant. They go under the description
"O F V S" over fascia vent system, manufacture Ubbink. It’s on Google,
Type in Ubbink. Select product selector then roof ventilation then
fascia. Make sure you ask for the one that as the comb filler on and
the unit is the interlocking type. The interlock is a bit awkward to
clip in, its inserted from the top diagonally and pushed in as you go
down. It should clip in and fit flush. If it isn’t flush its not
interlocked correct. That’s why you only fix top one side only to
rafter, so you can lift the unit up while connecting the units
together.