Helow and thanks for joining me I'd like to take you through the preparation
of this
old roof right way through to how we insulates it
and cover it with EPDM rubber membrane
so at the moment you can see us stripping in the old covering that was green mineral felt
covering
and you can see we have exposed all the old decking
we will do a small amount of repairs to the old decking actually its in quite good condition
especially because we are going over it with insulation
we will be covering the decking with boards
Its slight unevenness is not a problem
You can see here we are removing the old roofing system
In the background i'm there filling in the
old skylight area so
no rubbish falls down there
The windows are open because we are going to take them out
The new roof and insulation will be hire
So the windows will be replaced
Behind the windows we have dust sheets
So because this is going to be a warm roof the insulation
Is going to be on top of the old roof decking
So we will insulate behind the gutter board
To do this we have to remove the old guttering and gutter board
Exposing the gap we clean between
and fill with roof insulation
Insulation gos between the top of the wall to bottom of the decking
continuing the insulation properties all the way around
We have to work quickly so we can get
the roof covered for the end of the day
Not finished but waterproof
Im working on the skylight
Others are laying the vapour barrier
from other end of the roof
we are using a high quality vapor barrer
Should be called a vapour control system
It controls vapour
that transfers thought it into the insulation
This particular vapor control system is strong
and will span gaps of over 125mm
The roof decking is not good but the vapour barrier will brige problmes
Note the detailing of the vapour control system
It goes up and around the skylight
It goes up the walls
By the time this vapour control is down
this roof will be waterproof
Now we fix down the roof insulation using thermally broken fixings
roof insulation is fitted tight around the skylight
around the walls
any gaps are filled using foam
The curb for the skylight gos over the insulation
Making sure there is no chance of thermal briging
Gaps around the outside are filled with foam
the insulation is above the window cill
the old windows would have never opened
while the insulation has been going down
we backfilled between joists
primed all joist ends
Primed fascia board that goes over the top
now the customers chosen to use timber because
this is an old property
we could have used UPVC however this looks better
looks very very nice
now this just step back a stage or two
because we're gonna show you is what we've actually done before we put the
face you hold on
you know I've insulated behind the facial
which I'm actually paint now but there's a piece of wood above it
that peace of wood
is there to stop the insulation from crumbling on the edge
and once we've covered it with the vapor barrier
which comes across the decking up and over-the-top
off at peace treated timber we but the installation
directly up against it
we fill between the joists below and as you can see
what I'm doing now is I'm paintin the gutter board
that goes over the top of the insulation the EPDM membrane has been
down for quite some time
and he's been able to relax in the creases that I read it from transport
are slowly moving away you can see here that
the fashia boards haveall been prime ready for a top coat
an undercoat and a top coat
We see the roof insulation fixings
The insulation is level
the vapor barrier comes up around
laps over the top so we are now ready
to glue down the EPDM roof system
Now the EPDM is down
We clean carefully
The roofing system douse breath
but very very slow so it's very
important for us to get smooth
Now all the lead flashings are on
you can see the guttering looks good
against the wood
facial board
holds back the insulation you can see the black
black UPVC termination strip
you can see here the extra height of the insulation
this new flat roof is around 125mm
Higher than the old roof was
okay let's just have a look on the roof I think the first thing that comes
apparent when you go onto a new EPDM roof
especially when theres insulation under it
are all the marks showing through
this is part of the EPDM roofing system
we see all the joints between the insulation
slight marks where the EPDM was packed for traveling
It has a slight ridge
EPDM rubber will shrink back a little
but not of this is detrimental to the EPDM roof
If I apply presser i can dent this
don't walk on with sharp shoes
Thanks for watching my name is Steven Dickinson from London Flat Roofing
I hope this has helped you.