Paint Arrestor Rolls: Glass Fibre Media for Spray Booth Floor and Exhaust Filters
Progressive-density glass fibre that catches paint overspray before it reaches your extraction fan and ducting. 2 m × 20 m rolls (40 m²), 50mm nominal thickness, cut to fit floor grids and exhaust walls. In stock at our Silverton warehouse. We deliver, or you can collect.
Order Online
Paint arrestor is the filter that takes the overspray. It sits in the floor grid of a downdraft booth or across the exhaust wall of a cross-draft booth, and every gram of paint it holds is a gram that does not coat your fan blades, line your ducting or leave through the stack.
The media is a progressive-density glass fibre mat. The green face is open and lofty, so large droplets lodge near the front; the fibres pack tighter toward the white face, which catches the finer mist. Loading the full 50mm depth, rather than just the surface, is what gives this media its paint holding capacity.
One Roll, Cut to Your Booth
Each roll is 2 m wide and 20 m long: 40 m² of media. It cuts cleanly with a sharp knife, so one roll covers floor grid sections, exhaust wall frames and odd-sized bays without ordering pads to size. Measure the filter area of one complete change, divide by 40, and you have your rolls per change.
Honest Trade-offs
Glass fibre arrestor is the lowest upfront cost per square metre of the common booth exhaust media, and it is easy to fit. The trade-off: it holds less paint than folded cardboard or multi-ply polyester arrestors, so it is changed more often, and loose glass fibres mean gloves and long sleeves when you handle it. For a booth that sprays all day, every day, ask Nick whether a higher-capacity format would cost less per month.
Ordering
Full rolls online at R2 500,00 excl. VAT per roll, with free nationwide delivery on online orders. Rolls are held at our Silverton warehouse. For volume, cut pads or a booth you are setting up from scratch, request a quote or call Nick on +27 74 159 1634.
Paint Arrestor Specification
| Media Type | Progressive-density glass fibre, resin bonded |
| Colour | Green face (air inlet) / white face (air outlet) |
| Roll Size | 2 m × 20 m (40 m² per roll) |
| Thickness | 50mm nominal (lofted media; thickness recovers after unpacking) |
| Weight | 250 g/m² |
| Rated Air Velocity | 1.2 m/s |
| Initial Resistance | 13 Pa |
| Recommended Final Resistance | 250 Pa |
| Average Arrestance | 67.6% (G2 under EN 779, now withdrawn) |
| Paint Holding Capacity | 3 540 g/m² |
| Fire Behaviour | F1 to DIN 53438 |
| Supply Form | Full rolls |
Weight, velocity, resistance, arrestance, paint holding and fire values are the media supplier's published data, not Prebur test results. EN 779 was withdrawn in 2018 and replaced by ISO 16890; the G2 class is given for comparison with older booth specifications.
What the Numbers Mean for Your Booth
At 1.2 m/s, one square metre of media passes about 4 320 m³/h. Divide your booth's exhaust airflow by 4 320 for the minimum media area; more area means lower velocity, lower resistance and longer between changes. The 13 Pa to 250 Pa band is the working range: read a manometer across the filters and change at the upper figure.
Paint arrestor is the exhaust stage of a spray booth. It is not an intake or ceiling filter: supply air needs a finer media to keep dust off the wet paint, while the exhaust side needs depth and holding capacity.
Laid in the pit under the floor grating, green side up, so overspray drawn down past the vehicle is caught before the extraction plenum.
Cut to fit the exhaust frames at the back of the booth, green side facing the work, white side toward the fan.
Refinishing booths that run several resprays a day load exhaust media quickly. A roll on the shelf means a change is done when the manometer says so, not when a delivery arrives.
Spray lines for steel fabrication, joinery and furniture lacquer use the same exhaust media, often across larger filter walls where buying by the roll is the practical option.
Contractors who service several booths cut pads to each client's frames from one stock item instead of holding pad sizes per site.
For the intake side of a booth, our G3 synthetic filter media is the coarse pre-filter. Ceiling filters are a finer grade again; call Nick for those.
What is paint arrestor media?
Paint arrestor (also called paint stop or floor filter media) is a thick, open glass fibre mat that catches paint overspray before the exhaust air reaches the fan, ducting and outside air. The fibres get denser from the green face to the white face, so large droplets are held near the front and finer ones deeper in the mat. That spreads the load through the full 50mm instead of blinding the surface.
Which side faces the airflow?
Green side toward the booth, where the overspray arrives. White side toward the fan. Fitted the wrong way round, the dense face loads first and the filter blocks well before it has held its rated amount of paint.
When should I change the media?
On pressure drop, not on the calendar. Fit a manometer across the exhaust filters, note the reading on clean media, and change when it reaches the final resistance in the technical data (250 Pa on supplier data) or when airflow in the booth visibly drops. Overspray hanging in the air and a fan running flat out are the usual signs that change is overdue.
How much media is on one roll?
One roll is 2 m wide × 20 m long: 40 m² of media. Measure each filter bay or floor grid section, add up the area, and divide by 40 to get the number of rolls per complete change.
Can I buy part of a roll?
Online orders are for full rolls. If you need cut pads or a quantity that does not fit full rolls, call Nick on +27 74 159 1634 and he will quote.
How do I dispose of used paint arrestor?
Paint-laden media is waste from your process, and South African waste regulations make the generator responsible for classifying it. Treat it as hazardous until your waste contractor has classified it, and bag it before removal. Your paint supplier's safety data sheets will be needed for the classification.