What Mesh Size Should I Choose for My Deck Screen or Trommel Drum? (Answered!)
One of the most common questions we get at Spitfire Engineering is: “What mesh size should I use on my deck screen or trommel drum?” If you’ve ever wondered this, you’re not alone. Mesh size has a huge impact on your operation’s efficiency, product quality, and maintenance workload. So, let’s break down everything you need to know—no jargon, just straight answers.
What Is Mesh Size and Why Does It Matter?
Mesh size is simply the size of the openings in the screen or drum. It determines what material passes through and what gets retained. The right mesh size means you get the product you want, with less waste and fewer headaches.
How Do I Know Which Mesh Size Is Right for My Material?
Here’s the honest answer: It depends on your material and your goals. Here’s what to consider:
- Material Type: Are you screening topsoil, aggregates, compost, wood chip, or mixed waste? Finer materials need smaller mesh; larger, bulkier stuff needs bigger openings to avoid clogging.
- Desired Output: What do you want your finished product to look like? If you want to remove fines from topsoil, a 10mm or 20mm mesh is typical. For bigger separations, 40mm or 50mm might be better.
- Volume and Throughput: Smaller mesh = cleaner product, but also slower processing and more cleaning. Larger mesh = faster, but less precise. What’s more important to you: speed or purity?
How Can I Prevent My Mesh from Blocking?
This is a top concern for many customers. If your material is damp or sticky, larger mesh sizes help prevent blockages. You can also look at anti-blinding features or schedule regular cleaning. If you’re running sticky stuff, don’t be afraid to go a size up.
Can I Change My Mesh Size Later?
Absolutely. We recommend starting with your best estimate based on your material and goals, then adjusting as needed. At Spitfire Engineering, we often help customers trial different mesh sizes to find the perfect fit.
What Mesh Sizes Are Most Common for Different Materials?
| Material | Typical Mesh Size | Why |
|---|---|---|
| Topsoil | 10mm - 20mm | Removes fines, keeps debris out. |
| Aggregates | 20mm - 50mm | Depends on the grade needed. |
| Compost | 15mm - 25mm | Prevents clumping, better quality. |
| Woodchip | 25mm - 50mm | Depends on end use. |
| Mixed waste | Varies | Trial and adjust for best results. |
What If I Still Don’t Know What to Pick?
You’re not alone — this is exactly why we’re here.
Contact us with your material type and what you want to achieve, and we’ll give you a straight answer.
No fluff, just practical advice from 20 years in the business.
Key Takeaways
- Start with your material and your goals.
- Smaller mesh = finer separation, but more cleaning.
- Larger mesh = faster, less precise, fewer blockages.
- Test and adjust — don’t be afraid to experiment.
- Ask questions! We’re here to help.
At Spitfire Engineering, we believe if it’s to be, then it’s up to us to help you get it right.
Got a question about mesh size or anything else? Just ask—we’ll always answer.
