You can do this many times as long as you add the next layer before the resin cures to a non tacky surface.
How to use fiberglass mat and resin.
Apply the first layer of mat to the surface and saturate it with resin using the felt roller.
It is made up of short strands of fibers that are randomly oriented and held together with a resin binder.
Mix another batch of resin apply it the fiber cloth or mat and more resin.
Chopped strand mat is also known as fiberglass mat.
The mat or cloth will seem to melt into the resin as you spread it and you can use the brush and additional coats of resin to build up the layer of fiberglass to a thickness of up to 1 4 inch 0 6 cm.
Roll out the composite with dowel of brush out bubbles and wait the prescribed curing time.
You cannot start using the fiberglass cloth until you ve prepared the surface to accept it.
Lay mat on or in your form and spread the resin mixture over it with a disposable paint brush.
Step 4 apply the cloth.
In order to make the application a lot easier and simpler use a paintbrush to put the resin on the fiberglass cloth.
Use a foam roller or brush to wet out fabric on vertical surfaces.
The fiberglass mat is great to use around difficult corners better than other woven materials.
Properly wet out fabric is transparent.
The material is also ideal for the first layer before the gel coat is applied.
Step 3 mix the resin.
It also requires using more chemicals for thinning acetone denatured alcohol etc.
This makes it incompatible with epoxy resin.
Apply it on a rough surface.
Add the remaining layers of mat following the same process for each layer.
The fiberglass resin binder needs styrene to dissolve properly.
When polyester or vinyl ester resin is added to the mat the binder dissolves and the fibers can be moved around.
How to use fiberglass cloth for automobile repairs.
Step 5 sand.
There are people who want to use a spray bottle or an airbrush to apply the bonding material over a damaged fiberglass area.
It is only compatible with polyester and vinyl ester resin which contains styrene.
However using a spray requires too much work and thus more application time.
Remove any air bubbles and flatten the mat with an air roller.
The fiberglass mat helps prevent the weave texture from showing through and provides a smoother finish.
Pour a small pool of epoxy resin hardener near the center of the cloth.
Step 1 prepare the surface.
Step 2 cut the cloth.