another greenhouse question

First of all, last year we had strong here in spring that took out a couple of greenhouses. If the frame is up, then glaze it, the last thing you want is to have the frame buckle, the glass gives it the strength. If your really concerned then you can always reinforce the clips with silicon, most of our lot do that. Another tip which was passed on to me was to put cross members on the ridge of the roof, these will help to stop any oscillation and double as handy places to store your canes in the winter.

Excellent tip Aidy.

I'm building Frankenstein’s greenhouse (sort of two bolted together) The cross members is an excellent uncomplicated winter job.  That's just what my GH can do with.  Along with some glazing.

I recommend B&Q for Aluminium.  (is that how I stop spelling it?)   I throw the check out staff into turmoil when I hand over a length of it.  I don't think I've ever paid list price!

Don't fancy the silicon job though.  Rotten stuff gets everywhere.

double up on the glazing clips only way i could stop my glass from popping out

The problem comes from the frame oscillating in the wind and popping your clips, yep doubling up and silicon is two easy ways of securing.