4 mm Laminate Glass

[Possom]

I was thinking of replacing 4mm float window glass with either 6.4mm laminate glass or 4mm toughened glass.

Someone I have been in contact with mentioned 4mm laminate glass, which I hadn't heard of.

I know 6.4 mm laminate is two 3mm panes with a 0.4mm interlay.

If 4mm laminate exists, what exactly is this in terms of layers? Also, is it generally more expensive than 6.4mm laminate (or cheaper)?

 

[crank39]

Its 4.4mm and is mega expensive and as far as I'm aware does not meet regs in terms of critical areas, its made up of 2 x 2mm glass which is something you'd put in a picture frame and a .4mm polyvinyl butyral layer...pvb for short!

 

[ronniecabers]

Crank is right.....more expensive than 6.4lami, which in turn is more expensive than 4mm Tough, It is indeed 2mm Clr /0.4 PVB / 2mm Clr.

Technically in small sizes it is still classed as safety ( due to the interlayer ) but I wouldn't use it in large pieces, as soon as you put pressure on it, It will crack!

 

[Possom]

Thanks guys.