Don't know how it happened. But what should I do to stop it from getting worse.

See picture.

 

Good interior shop may have a fix.

 

I would tape off the area and then brush this onto the abrasion and then dust some sort of black fiber into it. I've used this stuff to glue a couple of things and it's incredibly strong/flixible and would almost certainly help tp prevent any threads from unraveling. Be warned though, it's super messy and takes at least a day to dry.

 

Thanks guys. I've tried to repair small areas on my 350Z convertible and made it look horrible. Maybe I'll take it to a custom shop.

 

Haartz made our tops - perhaps ask them for advice?
https://www.haartz.com

 

Interesting...that Haartz site.

From the site above:

• Sonnenland® is a line of 3- ply toppings all with polyester dobby backings. (Dobby????)
• Twillfast® is a line of 3- and 5-ply toppings all with Polyester and/or Polyester/Cotton Backings.
• Stayfast® is a line of 3-ply toppings all with square weaving face fabrics.
• Landmark™ is a 3-ply topping targeted towards the folding roof market.
• BlueSky™ topping products include special colorations, weaves, and surface effects targeted towards vehicle customizations.
• Haartz PVC toppings are designed for Original Equipment base-level convertible applications and aftermarket replacement.

Looks as if ours are Sonneland-A5BDS
https://www.haartz.com/products/sonnenland-a5bds

Here is another company's description of the dobby backing. (Learn something new every day!)

https://sunroofexpress.net/a-guide-to-convertible-tops/