On Apr 19, 8:11 pm, "dennis@home" wrote:
"Matty F" wrote in message

...

On Apr 19, 2:17 am, "Rick Hughes"
wrote:

Suggestions .... ?

Cerium Oxide on a wet rag.

If he puts clean glass in now he will need to shade it when the sun is out.
It might be easier to leave it dirty until Oct/Nov. ;-)

It would be easier to clean the glass now before it's put on the
glasshouse.
Otherwise we'll be asked how to climb around on top of a glasshouse
with a bucket and cloth.