16/10/2026
Why we never recommend a filter press for countertop fabricators 🚫
This week we replaced another filter press on a countertop fabricator’s water system. It’s a job we do often.
Here’s why.
The first rule of recycling process water is simple: get suspended solids out of the system as fast as possible.
There are two main ways to do it:
1️⃣ Dehydration bags
2️⃣ A dehydration filter press
Where filter presses work
Filter presses are excellent at dewatering sludge in natural stone and other high-volume operations. We sell them, and in the right application they do a great job.
Countertop fabrication is a different story.
Where they struggle
A press fills with sludge from the silo and squeezes it until the water flow drops low enough to open the press and release the cake. Then it closes and starts again.
When the cloths get dirty, every cycle takes longer. Plate shaking and automatic cloth washing help, but in practice most presses still need regular hands-on cleaning. You often don’t know it’s happening until the system stops.
The knock-on effects build up:
→ Less sludge leaves the system
→ Water treatment capacity drops
→ Turbidity rises and water clarity falls
→ Your expensive processing equipment is put at risk
→ The stoppages get more frequent
Why countertop shops are hit hardest
Engineered stone and porcelain produce ultra-fine solids. These particles quickly block the pores in filter cloths, so press performance keeps falling while sludge keeps building up in the silo.
The alternative: sludge bagging
A well-specified bagging system, with screw-type ejection and large bags of the correct porosity (this part matters), is:
✔ Fast and efficient
✔ Virtually maintenance-free
✔ Automatic, with very little impact on your operation
✔ Ready to discharge whenever you choose
✔ Bagged and ready for disposal
You can even empty the whole silo in one go if you need to. You can’t do that with a filter press without bypassing it, and then you’re left with loose sludge to deal with.
The bottom line
We supply filter presses for the right applications, but we never recommend them for countertop fabrication. That view comes from years in the field and more than 1,000 customers across our markets.
Is your press slowing down? Is your silo filling up, your water getting cloudier, or are you tied to constant cleaning? 👇 Comment or send us a message and we’ll help you sort it.
