I was looking at carrying a bunch of it back on the roof rack by sandwiching it between two sheets of ordinary half inch plywood or OSB, tied together in a bundle with ratchet straps or fibeglass strapping tape.


                                                         H.W.


On 07/03/2018 10:20 PM, Chris Purkiss chrispurkiss@bigpond.com [harryproa] wrote:

 

My local fibreglass supplier is about a 15 minute drive away. He has foam sheets.  My problem is I can’t put them on the roof rack so have to borrow my mates trailer which is big enough to fit full sheets in flat.

Chris Purkiss

M. 0428755749

On 4 Jul 2018, at 1:50 pm, realink@iprimus.com.au [harryproa] <harryproa@yahoogroups.com.au> wrote:

 

Ply vs foam/glass at the extremes is not about strength or stiffness.  3mm foam with 100 gsm glass each side would be about the same stiffness as 3mm ply, but would have no impact resistance.  25mm ply has similar stiffness to 25mm core with 1,5000 gsm each side, but is far heavier. 

I think what ply has, that even Woods wasnt able to comprehend

Ply has utility, if you can take it off the rack, or buy it somewhere locally and deliver it yourself

you didnt have to make it, it was just there, it has an immediacy of purpose that for an average use exceeded the requirement. Mark it out, cut it up, install, resin, peel ply, ... bang job done.

Not to say you couldnt have foam core sheets in the same way, but we dont ...