How do I get a smooth finish on gelcoat?

Sanding the fiberglass will help smooth out any rough spots in the gelcoat. If you’re sanding a large fiberglass surface, like the hull of a boat, use a random orbit sander to speed up the process. When you’re done sanding, wipe away any dust with a dry rag. Apply rubbing compound to the fiberglass with a cloth.

What is the best way to apply gelcoat?

Can you brush on gelcoat?

For applying your gelcoat, you can either roll the gelcoat on, like paint, or you can spray it on. We also sell a Brushable Gelcoat that can be applied with a brush. … If you brush it on, be sure to use a solvent resistant brush. Your first coat will simply consist of the gelcoat and the MEK-P catalyst.

Can you roll on clear coat on a boat?

The ideal temperature for rolling on the clear coat between 60 to 82 degrees F with low humidity. Based on these conditions, thin the DiamondFinish Clear by 10 percent using KBS #1 Thinner (or Xylene). Stir thoroughly and frequently. On hot days, thin by as 30 percent ensure proper flows.

Can you apply second coat of gelcoat?

The first coat of gelcoat does not need the wax since you will apply a second coat. When mixing gelcoat for the second coat, though, don’t forget to add in the wax additive. All Gelcoats from the Bottom Paint Store comes with the MEKP catalyst and wax additive sanding aid, but additional amounts can be purchased.

How long can you leave gelcoat?

Usually about 1.25 hours to 4 hours max. More than 4 hours, the resin has started to cure and the surface must be lightly sanded by 60 grit sandpaper to promote adhesion.

Can you spray clear coat over gelcoat?

You might be able to apply the clear coat over the gel coat without prepping. However, if I were you I would probably sand with a fine grit paper, then wipe down the surfaces with isopropyl alcohol. Alternatively, you can wipe down with the same solvent that is supplied with the Imron clear coat.

Can you roll on acrylic urethane?

When this acrylic urethane is buffed, the resin is able to flow together and does not require cutting the surface as deeply. So, Awlcraft 2000 is more suited for buffing and Awlgrip will require a Fairing Compound. Can be applied by spray or brush/roll.

Can you roll on top coat?

Yes, you can apply oil based polyurethane with a roller or a brush. Applying oil based polyurethane with a roller helps to avoid brush marks and strokes.

What is the difference between gelcoat and clear coat?

the difference is the thickness… a gelcoat is a layer of resin you put down into the mould before doing your lay-up. Clearcoat is a very thin layer of varnish you put onto your part after demoulding mostly.

How thick should gelcoat be?

Gelcoat needs to be applied evenly. We suggest a thickness of 18-20 mils to properly cure.

How thick can you apply gel coat?

Spraying gel coat is recommended for more accurate and consistent coverage. Apply gel coat in 4-5 layers at approximately 5 mils each, allowing 15-20 minutes between layers for a total thickness of 20-25 mils. Use #122-A Gel Coat Thickness to ensure proper thickness is achieved.

Can you use automotive clear coat on a boat?

If the boat stays out of the water all the time, you can use automotive clear.

Is neutral gelcoat clear?

Neutral gelcoat is not considered a clear gelcoat material. By itself, it cures to a translucent beige color, and is designed to work with colorants and tints to achieve a customizable final color.

What is the difference between gelcoat and top coat?

Gelcoat hardens sticky on the air side, while Topcoat hardens without stickiness. Once Topcoat is hard, it must be sanded down so that another layer of it can be applied. Gelcoat, on the other hand, can dry and then simply be given another layer of resin.