Fixing Bubbles in Fibreglass Mesh During Application
So that you get a good adhesion to the microcement with no gaps, the fibreglass mesh is intended to be laid flat against the surface.
Sometimes though, the mesh becomes folded or bubbles whilst your applying the primer or after the primer has dried.
This guide tells you everything you need to know about fixing the issue if it should arise.
Fixing Bubbles in Mesh Whilst Applying Primer 100 or 1st Base Coat
If you’re getting bubbles in the mesh whilst using Primer 100, slash the bubble with a knife or the edge of the trowel and go over it again with the roller, this should stick it back down flat to the surface.
If you notice bubbles after the Primer has dried or whilst you are applying your first base coat, you can use the same technique to flatten the bubble whilst applying your 1st Base Coat.
Fixing Bubbles After 1st Base Coat has Dried
If you notice bubbles in the first base coat, after it has dried, then sand them out before applying your second base coat.
By now, you’ll have a good coverage of mesh over the majority of the surface, so it’s better to sand a few areas than risk having any voids in the surface.
Fixing Bubbles in the Fibreglass Mesh whilst Applying Impripox
If any bubbles protrude in the mesh whilst using Epoxy, try your best to straighten the mesh as much as possible without disturbing the surrounding areas.
ImpriPox sets very hard, so its important that the majority of the surface sets nice & flat. As sanding a lot of imperfections out will take some time.
Once the Impripox & sand has dried, if there are any raised areas of mesh, where it hasn’t adhered to the substrate, it’s best to use a utility knife to cut away the loose mesh. Then sand back the edges of the mesh until the surface is completely flat & vacuum off any loose sand & mesh.
By now, you’ll have a good coverage of mesh over the majority of the surface, so it’s better to sand a few areas than risk having any voids in the surface.