David WE Roberts wrote:


"Tim Watts" wrote in message
...
My kids alerted me to a crack on the window I fitted in their betdroom
last
year.

In fact it is a series of cracks eminating from a single point under the
bead, probably the top centre edge of the panel.

They've sworn blind that they haven't hit it with anything and given the
apparent origin of the cracks, I'm inclined to believe them.

Now, it was my first glazing effort and I did have trouble, involving
removing the DG and doing it a second time. So it has been rather abused
(I
chose a small window as my first on purpose).

So 2 questions:

a) I'm thinking a minor fault in the glass and/or the abuse I gave it.

b) (Worse) I'm doing glazing fundamentally wrong. I don't (hope) think so
as
I used proper glazing packers, bridges and packed the DG in nicely
without forcing it.

snip

Is this a fixed or opening light?

Hi David,

Fixed.

I assume you left a reasonable air space above the glass?

Yes - 3-5mm.

From the instructions from various sources I followed when doing my
glazing there should be nothing touching at the top centre, and I think a
reasonable space.

Nothing I know of.

The diagram I followed showed a fixed light resting on bridge packers at
the bottom, and an opening light packed out at most of the corners.
I was initialy amazed at the amount of air space around the glazing unit,
but less so after I had used various frame fixings to secure the frame.

I was careful to make sure the glass didn't touch any screw heads. This is a
lower light, so definately no fixings on top.

Cheers

Tim

--
Tim Watts