Crack in acrylic screen?

[C08]

My wheelhouse window ar the front has started a small crack about 1.5" long and I am wondering if there is a way of stopping it spreading further across the screen. It is at the top out of the line of sight so not a problem as it is but I would like not to have to replace the screen as it is about 4ft 6"x30" and with a lot of small screws.

 

[wonkywinch]

Drill a small hole at the end or just beyond the end of the crack. That will stop it going any further. In fact the method is called "stop drilling".

 

[ChromeDome]

At some point you may want to replace it.

I used the original window as a template for making a new from polycarbonate. Easy and about 100 times better.

 

[C08]

At some point you may want to replace it.

I used the original window as a template for making a new from polycarbonate. Easy and about 100 times better.

My allegedly UV stable (expensive) polycarbonate screen went cloudy after 3 seasons and I replaced with acrylic which is cristal clear. I wondered if a melted spot, perhaps soldering iron may stop the crack? I have too much on to replace the screen.

 

[Metalicmike]

I agree with wonkeywinch that is the standard method for stopping cracks. You could then v out the crack (not right through) and fill it with crystal clear silicone.

 

[mrangry]

My allegedly UV stable (expensive) polycarbonate screen went cloudy after 3 seasons and I replaced with acrylic which is cristal clear. I wondered if a melted spot, perhaps soldering iron may stop the crack? I have too much on to replace the screen.

Polycarbonate whilst more impact resistant scratches easier and more prone to uv damage than acrylic. Oh and more expensive

 

[harvey38]

If you want to stop it then others have said, drill at each end, if you want to repair it then a product I have used with cracks on aircraft canopies is Plastifix.