Fiberglass Shower 2018 – Fiberglass Filler – What is it and Why Use it on Auto Body Repairs?

What Is Fiberglass?

Uncooked fiberglass are available in a mushy cloth like materials. When seated with liquid resin and more durable, it turns into exhausting and really robust. There aren't too many fiberglass auto components on modern-day vehicles, as they've all began utilizing different composites like SMC and Carbon Fiber. Nonetheless, fiberglass was on early mannequin corvettes, truck hoods, and lots of different components. There are nonetheless aftermarket components which can be manufactured from fiberglass and it nonetheless used for boats and jet skis.

The Distinction Between Fiberglass and Fiberglass Filler

Fiberglass filler is available in a can and is blended with a cream hardener. It mixes lots like common physique filler, however it's thicker and slightly more durable to combine. The filler truly has fiberglass blended in it. It comes quick hair and lengthy hair. That is the size of the fiberglass that's blended within the filler. Each present glorious waterproof properties as they don't take up water. Each fiberglass fillers are stronger than common physique filler. The lengthy hair filler offers essentially the most power out of the 2. Nonetheless, these fillers are very tough to sand. The filler can be thick, which makes it exhausting to stage and easy like common physique filler.

Why Use Fiberglass Filler If It's So Tough To Sand

The rationale we use fiberglass filler in auto physique restore is just not actually the added power, however for the waterproof properties. It's endorsed to use a skinny layer of fiberglass filler over any welding that's carried out. Physique filler absorbs moister, which is able to results in corrosion and rust. Through the use of the fiberglass, we eradicate the moister absorption downside. Since our foremost objective is to seal the welded space, the quick hair fiberglass is ample for the appliance.

What Can Fiberglass Filler Be Used On

This filler can be utilized over naked metallic or fiberglass.

Ending The Restore

As I discussed, fiberglass doesn't sand nicely. That's the reason I like to recommend solely making use of a small quantity to the welded areas and tough sanding it. After that is accomplished, you may apply physique filler on the highest of the fiberglass filler and end the restore as you usually would use physique filler.


You must at all times put on correct protecting gear when sanding any filler. Nonetheless, excessive warning must be taken when sanding fiberglass merchandise. It not solely itches and irritate your pores and skin, however this can be very unhealthy to breathed the fiberglass. Be sure you put on an permitted mud respiration, gloves, eye safety, and chances are you'll even need to put on a disposable paint go well with. If a number of the fiberglass does get in your pores and skin, take a chilly shower. This can assist hold your pores small and permit the fiberglass to clean off.