Hi,
I'm not sure whether the aerosol will have enough power to push the foam through a 4 ft pipe, or if the foam will start to set before it reaches the end. A little test is required first, I think. With a plastic pipe of course you can see the foam travelling down the tube, but it is naturally floppy. Rigging a gun/can, and operating the trigger mechanism, on the end of a stick is more of a challenge. Nail varnish remover cleans the tube (but this stuff is Sticky!).
There will be drips and droppings, so some caution is needed. Also if you fall out of the window whilst doing this scaffolding will seem a cheap option, so take care!
Rgds.
I'm not sure whether the aerosol will have enough power to push the foam through a 4 ft pipe, or if the foam will start to set before it reaches the end. A little test is required first, I think. With a plastic pipe of course you can see the foam travelling down the tube, but it is naturally floppy. Rigging a gun/can, and operating the trigger mechanism, on the end of a stick is more of a challenge. Nail varnish remover cleans the tube (but this stuff is Sticky!).
There will be drips and droppings, so some caution is needed. Also if you fall out of the window whilst doing this scaffolding will seem a cheap option, so take care!
Rgds.

