How to lay fiberglass over a plywood camper?

In this blog post, we will answer the question: “How to lay fiberglass over a plywood camper?” We will discuss the process and steps for applying fiberglass over a plywood camper. We will also talk about the lamination process and the different types of resin that are used. Additionally, we will discuss the alternative materials that can be used instead of fiberglass.


How to lay fiberglass over a plywood camper?

To lay fiberglass over a plywood camper the following steps need to be considered: 

  • Make sure to clean the camper well before starting
  • Use sandpaper on all of the surfaces.
  • Use a wet rag to wipe the plywood and remove all the dirt.
  • Level out all the bumps and rough spots.
  • Make sure to get the surface smooth and even.
  • Mix the fiberglass resin in a bucket. Be sure to follow the correct ratio and add the right amount of catalyst.
  • By using a large brush, spread a layer of resin on the plywood. (Do not apply too much since it can harden fast. Make sure to add enough to place one sheet of fiberglass).
  • After applying the resin to the plywood, place the fiberglass sheet on the surface. You will need to use several pieces of fiberglass and stick them next to each other.
  • Make sure that there are no air bubbles when you apply the fiberglass.
  • Once you are done laying the fiberglass on the plywood, cut off the extra fiberglass and use sandpaper to surface the edges.
  • The next step is to apply a coat of epoxy.
  • Finally, finish the job by applying gel coat paint to give it a beautiful appearance.

If you are applying fiberglass over a plywood camper, you will need to buy a large enough piece of fiberglass to cover the surface. You must cut strips of fiberglass that are larger than the plywood surface. You can also use multiple pieces of fiberglass cloth for a larger project. You will need to mix the resin with a catalyst in a bucket to make sure the finished product is ready to apply.

Points to remember while laying fiberglass 

Laying fiberglass can be a tricky job. Some points to remember while laying fiberglass are discussed below. 


Use enough catalyst 

Make sure you have the correct amount of catalyst for the job, as too little or too much catalyst will make the resin harden too quickly. You can also use a roller on a pole to spread the fiberglass over the surface. To apply the resin, you can use a huge brush and be sure to work fast once the resin is applied to avoid it from drying.

If you are looking for a quick, easy way to cover your plywood camper, you may want to try fiberglass or marine epoxy. Although these are more expensive, they can be durable and last for years. Applying resin for a rust-proof finish will provide protection and give you a better overall appearance.  Here are a few steps that need to be followed.

Tape the seams

While seam tapering is optional. Many people use bias cut tape, especially at glass crossing joints. In most cases, you will be able to leave the seams untaped for as long as you like. However, it is recommended to tape fiberglass seams. Taking the seams is not too difficult and it can be done with ease. Here are a few steps to follow.

  • First, lay down a piece of fiberglass cloth on the surface you have prepared.
  • Make sure that the edges are parallel to one another and that there is no gap between the pieces.
  • Apply fiberglass resin and work it into the fiberglass to fill in any air bubbles.
  • Apply the second layer, not lining the seams, and let it dry overnight.
  • Apply two or three layers of epoxy.
  • You can also apply the fiberglass cloth directly to the plywood surface.
  • For a larger surface, you can overlap the fiberglass cloth by two inches.
  • Use tape or staples to hold it in place.
  • When the epoxy is dry, you can use sandpaper to get rid of any uneven spots.
  • If the fiberglass cloth is too tight, you may need to use scissors to trim it.

Laminate the fiberglass 

When choosing a laminate, be sure to remember a few things. A good laminate should be resistant to pull-off. The resistance of the cured glass to plywood will depend on several factors, including the wood’s thickness and the strength of the resin. Here are some tips on how to get the job done properly:

First, check the weight of the plywood and use a lightweight material. An 85gsm piece of fiberglass will protect a ply camper well while adding structural integrity. For every gram of glass used, two grams of resin will be required. For a thicker cloth, more coats will be needed to cover the plywood. Use a UV protective finish or polyester or vinyl ester.

Use the right resin

You can also choose to use epoxy or polyester resin. Resin is the most common choice and is used widely. This type of resin is widely used for basic repairs but may not be suited for the more rigorous application requirements of an epoxy. Another common material to use for a resin is Kevlar. It has high abrasion resistance, but a low abrasion rate.

Types of resin 

The different types of resin that you can use to lay fiberglass for your camper are: 

Polyester Resin

  • Polyester Resin is also common and can be found at any store. If you are working with wood, polyester resin might not be the best option since they do not stick to wood.
  • This resin peels off and delaminates when exposed to water. On the other hand, it is brittle and weak and is not built to last long.

Vinyl-ester Resin

  • Vinyl-ester resin is almost similar to polyester resin but has more strength due to the epoxy molecules. This resin is stronger and flexible and does not shrink as much as polyester. 
  • The only issue with this type of resin is the process of mixing and handling. It is also more expensive than polyester but less expensive than epoxy.

Epoxy Resin

  • Epoxy is one of the best adhesives that have composite materials. Epoxy resin is best to work with wood and it has some of the best waterproof qualities. 
  • There are cheap variants of epoxy but they are sure to cost more than polyester and vinyl-ester resin. Apart from the price, epoxy resin is one of the best and easy to work with, especially with plywood campers.

Alternative materials

Some of the other materials that you can use are Duraback, which is used in bed liners, and FRP (Fiber Reinforced Plastic), which is the same stuff that shower wall liners are made from. FRP can be found at most home improvement stores, but it is not UV stable. When it comes to adding protection to your camper, you might want to opt for a UV stable option.

Using Duraback over a camper

There are several types of plywood campers. The most common are made of plywood and then covered with an aluminum sheet. Other materials include fiberglass, marine epoxy, and Duraback fiberglass over plywood. Many teardrop campers are made with this type of material and Duraback is well-known for campers.  

Duraback is affordable and can be found easily. Fiberglass is more expensive but they are built to last longer. Duraback is flexible and water-resistant and it eliminates bubbling and blistering. Duraback also acts as a moisture barrier and is one of the best products that provide stability and superior flexibility.


In this blog post, we have answered the question: “How to lay fiberglass over a plywood camper?” We have discussed the process and steps for applying fiberglass over a plywood camper. We have also talked about the lamination process and the different types of resin that are used. Additionally, we have discussed alternative materials that can be used instead of fiberglass.


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