On May 28, 4:44*pm, Tim Watts wrote:
Hi,

Anyone familiar with these:

http://www.roofinglines.co.uk/produc...cia-vent-strip

?

Recap - need to vent the dormer facias, there is no soffit, so has to go
in the fascias.

I presume these are designed to screw to the top of uPVC fascias?

I guess these things might be retro-fittable if I can get the uPVC
fascia off (ie is the roof felt stuck to it or not - only trying will
tell[1]), sticking one of these on top and refitting the fascia dropped
by about an inch. OK it will no longer line up with the edge fascias,
but I don't think anyone will notice at that height.

[1] If the felt (which was hot-tarred on) is, is it viable to release
the felt by application of a suitable gas torch?

The other option is hole-sawing or jisawing big holes in the front and
gluing a louvred gas vent+insect screen on - but I'm less confident
about the air flow and rain proofness of that idea...

And there was another option John R came up with last time round of
using flat ventilation 90 degree turns as rain proofing, but that, while
very convincing will be a bit fiddly too.

--
Tim Watts

Hung parliament? Rather have a hanged parliament.

The units you see in the link are over fascia vent strips. They are
designed to fit on top of a fascia board under the vapour of underlay
felt on a tiled roof. They can either be nailed or screwed on; they
also interlock at the ends. When fitting, the back edge fits flush
with the back edge of the fascia board and the front of the unit hangs
over the front of the fascia board to form the vent cross flow. Theses
unit are NOT designed for flat roofs. Don’t put a blowtorch anywhere
near the units on an eave.