We are halfway through the new DG being installed, very good job it
looks too, apart from one thing....

They have sealed up all the way around the frame and under the sill,
but there is a 3/8" gap between top of the sloping sill and the frame
which looks rather odd. It goes back quite away under the frame.

Before I leave instructions to complain about the gap, is it normal to
have that open gap?

--
Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk

Harry Bloomfield wrote:
there is a 3/8" gap between top of the sloping sill and the frame which
looks rather odd. It goes back quite away under the frame.

Before I leave instructions to complain about the gap, is it normal to
have that open gap?

Depends on the slope of the sill. Mine have a gap of about 1/16". IIRC,
the sill goes in first and the frame sits on top. There are drain slots
in the opening in case any water gets past the seals and that would then
drip onto the sill and run away.

--
Fred

Harry Bloomfield wrote:
We are halfway through the new DG being installed, very good job it
looks too, apart from one thing....

They have sealed up all the way around the frame and under the sill,
but there is a 3/8" gap between top of the sloping sill and the frame
which looks rather odd. It goes back quite away under the frame.

Before I leave instructions to complain about the gap, is it normal to
have that open gap?

Yes.
If you seal it up, the frame will fill with water given that it's hollow

on 08/08/2011, Phil L supposed :
Harry Bloomfield wrote:
We are halfway through the new DG being installed, very good job it
looks too, apart from one thing....

They have sealed up all the way around the frame and under the sill,
but there is a 3/8" gap between top of the sloping sill and the frame
which looks rather odd. It goes back quite away under the frame.

Before I leave instructions to complain about the gap, is it normal to
have that open gap?

Yes.
If you seal it up, the frame will fill with water given that it's hollow

Thanks, I'll keep the mouth firmly shut then :-Z

They have got all the upper floor done and a small one at ground level.
It was the one at ground level where I noticed the gap first, then on
checking the upstairs they were the same.

--
Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk

On Mon, 08 Aug 2011 20:38:09 +0100, Harry Bloomfield wrote:

They have got all the upper floor done and a small one at ground level.
It was the one at ground level where I noticed the gap first, then on
checking the upstairs they were the same.

It might be worth checking that the sealant goes back to the upstand
on the sill at the back of this gap at each end. If it doesn't there
is a nice little hole for rain to get blown through and into the
wall...

--
Cheers
Dave.

It happens that Dave Liquorice formulated :
On Mon, 08 Aug 2011 20:38:09 +0100, Harry Bloomfield wrote:

They have got all the upper floor done and a small one at ground level.
It was the one at ground level where I noticed the gap first, then on
checking the upstairs they were the same.

It might be worth checking that the sealant goes back to the upstand
on the sill at the back of this gap at each end. If it doesn't there
is a nice little hole for rain to get blown through and into the
wall...

Thanks, I'll see if I can check that.

--
Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk

I've just installed a couple of secondhand uPVC windows in my garage. They
have the same gap above the cill and I was planning to fill it with
silicone, caulk or mastic, purely for the sake of the appearance. But when
I checked the professionally installed windows in my house I was surprised
to find exactly the same gap: I'd either never noticed it, or noticed it and
forgotten all about it: in my experience, things that glare at you when
they're new can very quickly fade into insignificance.

Bert