Andrew Pace
Applying gel coat to the hull of a boat is a long and challenging process. It can be done with rollers or spray guns, but it's important to note that it's not a quick fix and requires a lot of preparation and aftercare. The process involves filling flaws with gel coat filler, sanding, and polishing. This article will explore the pros and cons of using gel coat on a boat's hull and provide insights into the application process.
| Characteristics | Values |
|---|---|
| Work involved | An enormous amount of work |
| Best done | Under controlled conditions |
| Alternative to | Spray painting |
| Not for | Patching up |
| Best approach for older boats | Repair dings, rub down and polish existing gel coat |
| Time taken | Several weeks |
| Application method | Spray gun, roller, brush |
| Number of coats | Two or three with a brush |
| Sanding | 180 grit, 400 or 500 |
| Polish | Coarse compound, fine compound, several coats of good quality polish |
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What You'll Learn
- Gel coat spraying is an alternative to spray painting, not for patching up
- Re-gelcoating a boat is a long job, taking several weeks
- Spraying gel coat is expensive, but gives the ultimate smoothness
- Applying gel coat is only about 10% of the job; the other 90% is sanding and cutting back
- Gel coat is durable and easy to repair, but requires more maintenance year-to-year
Gel coat spraying is an alternative to spray painting, not for patching up
Gel coat spraying is an option for those who want to coat their boat's entire hull and want a professional-looking finish. It is more expensive than using a brush, but a brush will require two or three coats to achieve the same thickness as a spray gun.
Applying the gel coat is only about 10% of the job. The other 90% is sanding and cutting back. You will also need to sand the gel coat after spraying.
If you are repairing an older boat, the best approach is usually to repair the dings and rub down and polish the existing gel coat. There is usually enough thickness to get a good finish.
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Re-gelcoating a boat is a long job, taking several weeks
The first step is to fill in any flaws with gel coat filler. Then, you need to sand the gel coat with 180 grit, followed by 400 or 500 grit. All of this should be done dry, using an orbital power tool.
Next, you need to apply a coarse compound, followed by a fine compound. Finally, you need to apply several coats of a good quality polish. This whole process can take several weeks, as seen by a couple who re-gelcoated a 38-foot boat in Greece.
If you are coating the entire hull of the boat, it is recommended to use a spray gun to achieve a professional-looking finish. However, this can be expensive, so a brush can also be used, but you may need to apply two or three coats to achieve the same thickness as a spray gun.
Additionally, applying the gel coat is about 10% of the job, with sanding and cutting back taking up 90% of the work and maintenance needing to be done year to year with compound and wax.
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Spraying gel coat is expensive, but gives the ultimate smoothness
Spraying gel coat is expensive, but it gives the ultimate smoothness. It is an enormous amount of work and is best done under controlled conditions. It is an alternative to spray painting and is not for patching up. On an older boat, the best approach is usually to repair the dings and rub down and then polish the existing gel coat as there is usually enough thickness to get a good finish.
If you are planning on coating your boat's entire hull, it is a big enough job to warrant some investment in the outcome, so choose a spray gun. You may need to apply two or three coats with a brush to achieve the same thickness as a spray gun.
Applying the gel coat is about 10% of the job. Sanding and cutting back is the other 90% of the work. You will also need to sand/wet sand/buff after spraying and it is more maintenance-intensive year on year (compound and wax).
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Applying gel coat is only about 10% of the job; the other 90% is sanding and cutting back
Applying gel coat to a boat hull is a long and laborious process. It is an alternative to spray painting and is best done under controlled conditions. Applying the gel coat is only about 10% of the job; the other 90% is sanding and cutting back.
The first step is to repair any dings or flaws in the hull. This can be done with gel coat filler, which is then sanded down with 180-grit sandpaper. The gel coat is then sanded again with 400 or 500-grit sandpaper, all dry on an orbital power tool. After this, a coarse compound is applied, followed by a fine compound and finally several coats of a good quality polish.
The entire process can take several weeks, and it is important to note that the finish will not be as smooth as a spray-painted finish. If you are coating the entire hull of a boat, it is recommended to use a spray gun to achieve a more professional-looking finish. However, a brush can also be used, but it may take two or three coats to achieve the same thickness as a spray gun.
Gel coat has the advantage of being durable and easy to repair. Scratches and gouges can be sanded, wet sanded, or buffed out. However, it does require more maintenance year-to-year, including compounding and waxing.
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Gel coat is durable and easy to repair, but requires more maintenance year-to-year
Gel coat is a durable and easy-to-repair option for the hull of a boat, but it does require more maintenance year-to-year. It is a good option for repairing deep scratches and gouges, as it can be sanded, wet sanded, and buffed. However, after spraying, it requires sanding and waxing, which can be time-consuming and labour-intensive.
Applying the gel coat is only about 10% of the work; the other 90% is sanding and cutting back. If you are repairing an older boat, it is often best to repair the dings and polish the existing gel coat, as there is usually enough thickness to get a good finish.
If you are coating the entire hull, it is recommended to use a spray gun to achieve a smooth and professional finish. However, this can be expensive, and a brush may be used as a cheaper alternative, although this will require two or three coats to achieve the same thickness.
Overall, gel coat is a durable and easy-to-repair option for the hull of a boat, but it does require more maintenance and can be time-consuming, especially if you are coating the entire hull.
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Frequently asked questions
Yes, gel coat spray can be used on the hull of a boat. However, it is an enormous amount of work and is best done under controlled conditions. It is an alternative to spray painting, not for patching up.
Applying the gel coat is about 10% of the job. It is a long job and can take several weeks of work.
The best method for gel coat spraying a boat is to use a spray gun. This will give you a professional-looking finish.
