Polyester vs Sunlight

[44'cruisingcat]

Originally Posted by boatman61

Take a look at your gel coat.. how's it doing.??

I don't have gel coat. But yes it stands up well, although I expect there are lots of ingredients besides resin in gelcoat.

[44'cruisingcat]

Some good info, thanks!

I'm thinking about spraying it on a gravel driveway to stop it getting ruts and hopefully slow down the weeds.

If it holds together 10 years I'd be very happy.

[Simi 60]

Originally Posted by 44'cruisingcat

A question for the resin experts: how well does polyester resin cope with direct exposure to sunlight? Like for years.

I know epoxy has to be kept out of the sun, but I've never heard anything like that said about polyester.

Does it last well in the sun?

Front top cabin panel on a seawind 24 is ungelcoated poly.
Decades old, seem to be ok.

[Benz]

Originally Posted by 44'cruisingcat

Some good info, thanks!

I'm thinking about spraying it on a gravel driveway to stop it getting ruts and hopefully slow down the weeds.

If it holds together 10 years I'd be very happy.

It would take an awful lot of it to be able to bind all the gravel together strongly enough. You're better off pouring concrete.

[Factor]

Originally Posted by 44'cruisingcat

Some good info, thanks!

I'm thinking about spraying it on a gravel driveway to stop it getting ruts and hopefully slow down the weeds.

If it holds together 10 years I'd be very happy.

You have a driveway!