resin stick to resin.

I have a non slip tread pattern on the fibreglass roof of my cat. Inside the bridge this is the floor and it is where sheets of glass approx 10 inch by 2 feet have been laid on to hold the bridge on. After 10 years appears to be relatively easy to slide a scraper under the glassing and it parts.

I need to re glass but how much preparation is required on the non slip tread pattern. It would be a hell of a messy job to grind back to flat.

Would a scrub with acetone and a wire brush be sufficient.

Should I use epoxy or resin again.

 

If it separates that easy maybe just grind around the perimeter and peel it up with a long handled tile scraper.



Definitely use epoxy instead of polyester to re-do.

http://www.toolstation.com/shop/Hand Tools/Builders Tools/Heavy Duty Floor Scraper/d10/sd140/p94458

 

Not the point Hoyt. It will come away easy its how to prepare the old surface to take new glass and resin. the nonslip patter is like 1 mm deep

 

Sorry I misunderstood your meaning. Definitely use epoxy resin. I would only grind out loose areas and scuff sound areas. Build up the divots to a level state.

 

Grind away the gelcoat before doing any glueing. Gelcoat is not a good material to have in your bondline.

 

Use a fiber wheel on an angle grinder or drill. Use the ones with man made fibers instead of metal.

 

One way to do this is cast a nice big section of non slip. Use your own deck or a friends. wax a section bigger then your need, cast a strong mold with polyester and C S maybe some scrap wood . Take it off then cast a nice bigger product (polyester) then you need. trim to size , fit with lots of Sikaflex after preparing the old surface with abrasive and acetone. Prime and paint the new non slip when in place( after masking) it will bury all the old **** and Sika is powerfull stuff, or Simpsons.

Brett

 

A kind of wire brush made from fibres?

Actually I might have seen them. So basically your saying a good scuffing up without grinding the non slip flat.

 

PAR --I found a polywheel. its a 4 inch wheel and looks like birds nest dipped in epoxy. its not a brush,--is that what you mean 3 dollar.

 

Do you mean like this but for a 4inch grinder.

http://www.harborfreight.com/4-inch-polycarbide-abrasive-wheel-brush-94015.html

 

They look like a wire wheel, except the wires are man made (plastic) and appear to be on steroids.

 

I think it's these type of things, slightly abrasive nylon wheels...



http://www.grainger.com/Grainger/VORTEC-Wheel-Brush-1PBH5

 

Right gotcha thanks. Ive seen those ---some where.

What about epoxy or resin again.

 

Should I use resin again or epoxy.

 

Epoxy is resin, but I know what you mean. You make the choice. You know what I'm going to say and you know what Tunnels is going to say. I can recite strength and bonding advantages and he'll talk about cost and stuff. Personally, I've found all the cost stuff is less then most folks think, as you can use less if it's epoxy, for the same weight and stiffness in polyester, but it's still your call. I also think you'll have less bonding issues with epoxy, but you could make it work with polyester too. The real key will be how clean you can get the areas that you'll be trying to get this under.