Repair of polypropylene dinghy hull

[mydauphin]

Amazingly, I used 5200 with some good results. Drill holes to act as physical attachment points and to prevent further cracking.

[Yellowjacket]

Most automobile bumper covers are polyproplene. There is a two part epoxy that is made for repairing them, that is more flexible than typical epoxy and is deisgned to stick to polyproplene. If you used that with a fiberglass patch you could probably repair a crack or weak point or crack with that.

[pistnbroke]

Being stupid but having posted a question about polyethelene roto moulded boats ..PE am I right in thinking that this craking/UV problem is restricted to PP or is it also a problem with PE ...the makers say not.

[Steve W]

Is it really polypropylene or is it polyethylene?
Steve.

[Lew Morris]

Both PE and PP degrade under UV exposure.

TAP Plastic is offering an adhesive, which they say, is suitable for bonding polypropylene.

http://www.tapplastics.com/shop/product.php?pid=435&

I have no personal experience using it, nor am I affiliated with TAP.