Skip to content
Sia Abrasives sanding discs and belts for timber floor sanding

sia Abrasives Floor Sanding Belts & Discs

Filters

$
$
  • 1749 178x22mm Disc CH-Star sanding abrasive for timber floors by EcoGrit Australia
    $1.28 - $2.05
    $1.28 - $2.05
    $1.28 - $2.05
    $1.28

    1749 178x22mm Disc CH-Star

    The number one choice for sanding MDF, HDF, and chipboard, the 1749 siaral f is a specialist abrasive designed for keying these materials. It offer...

    View full details
    $1.28 - $2.05
    $1.28 - $2.05
    $1.28 - $2.05
    $1.28
  • 2800 200x750mm Zirconia Belt (8inch belt) sanding abrasive for timber floors by EcoGrit Australia
    $11.81 - $14.81
    $11.81 - $14.81
    $11.81 - $14.81
    $11.81

    2800 200x750mm Zirconia Belt (8inch belt)

    2800 Siaron Zirconia The 2800 Siaron Zirconia belt is a tough, aggressive performer, offering exceptional productivity and value for bare wood or n...

    View full details
    $11.81 - $14.81
    $11.81 - $14.81
    $11.81 - $14.81
    $11.81
  • 1815 150x18mm Disc DE-9H siafast sanding abrasive for timber floors by EcoGrit Australia
    $1.10 - $1.23
    $1.10 - $1.23
    $1.10 - $1.23
    $1.10

    1815 150x18mm Disc DE-9H siafast

    The sia 1815 siatop siafast disc is a 150 mm hook-and-loop sanding disc for timber. It has a zirconia alumina grain and the DE-9H hole pattern, and...

    View full details
    $1.10 - $1.23
    $1.10 - $1.23
    $1.10 - $1.23
    $1.10

Sanding sets up the finish. Scratches left by the wrong grit show through oil or lacquer, and water-based lacquers highlight even fine scratches. This range covers the sia 2800 Siaron zirconia belt for 8-inch floor sanders and the sia 1749 siaral f disc in a 178mm format. sia is a Swiss manufacturer, and the 2800 belt is made for all types of timber floor surfaces. That makes it a practical choice for trade floor sanders and experienced renovators on hard Australian species such as spotted gum, blackbutt and jarrah, where a belt that cuts fast and runs cool keeps the job moving.

How to choose floor sanding abrasives

  • Coarse cut, P24 to P40: this pass levels uneven boards and removes old coatings. The sia 2800 zirconia belt is built for high stock removal on bare wood or non-gummy finishes. P40 suits many floors, while painted, badly cupped or heavily coated floors may need P36 or P24 first.
  • Engineered boards: the wear layer is limited, so start no coarser than P60 and take off only as much timber as the job needs.
  • Medium passes, P60 then P80: these remove the coarse scratch and even out the surface. If you plan to fill, collect fine dust from the P80 pass: AquaSeal Pafuki is mixed with that dust and trowelled into joints up to 2mm, and wider joints need FlexFill or PAKstop from our wood floor fillers range.
  • Final pass, P100 to P120: the 2800 belt range stops at P100. Our grit guide recommends finishing at 120 for water-based lacquers such as Berger-Seidle AquaSeal, and 100 to 120 for oils such as Rubio Monocoat and WOCA, because going too fine reduces how much oil the timber absorbs.
  • Edges: bring the edger to the same grit as the main floor before moving on. For edgers that take a 178mm disc, the sia 1749 disc (178x22mm) comes in P40, P60 and P80 and lists hardwood and softwood among its suitable materials. Check your edger's pad size and centre hole before ordering.

For the full schedule, read the floor sanding abrasive grit guide, which also sets out the grit progression for each finish type. Working on interlocked grain? Spotted Gum: Australia's hardest floor to finish explains the diagonal first pass, and the spotted gum flooring guide covers the species itself.

Need help matching abrasives to your machine or finish? Call our technical line on 0401 270 818. Flooring contractors can apply for a trade account, and rollers, pads and trowels for filling and coating are in Tools & Accessories.

Floor Prep That Protects Belts and Timber

Floor Prep That Protects Belts and Timber

Torn belts and gouges often start before the first pass. Punch protruding nails below the surface, pull staples and tacks, and vacuum thoroughly so loose grit is not dragged under the next belt.

Keep the sander moving whenever the drum is down, and lower and raise it while travelling to avoid dips at the ends of each run. Vacuum between every grit change, then check the floor under a raking light for scratches you missed before moving to a finer grit. Finding them at P80 is far cheaper than finding them under the first coat of lacquer.

Contact Us

Questions about our sia Abrasives?

Which sia sanding belt fits my floor sander?

The sia 2800 Siaron zirconia belt measures 200x750mm, the 8-inch size. It is compatible with popular machines including the Lagler Hummel, Clarke Classic 8, Floor Crafter Apollo 8, Galaxy 2000 and Prosand. It comes in P24, P36, P40, P60, P80 and P100. If your machine is not listed, check the belt size in its manual before ordering.

Can I skip grits when sanding a timber floor?

Skip no more than one grit. Each grit has to remove the scratch left by the one before, and a much finer grit cannot erase a deep coarse scratch in a few passes, so jumping from 40 straight to 100 or 120 leaves marks that show once the lacquer or oil goes on. A common hardwood sequence is 40, 60, 80, then 100 or 120.

Why use a zirconia sanding belt on timber floors?

The sia 2800 Siaron belt uses zirconia grain and is built as a tough, aggressive all-rounder for all types of timber floor. It cuts faster and runs cooler, has an extra-durable cloth backing with a non-directional splice, and an open coat that resists loading. It is designed for bare wood or non-gummy finishes, and its anti-static construction reduces airborne dust.

When should I change a sanding belt or disc?

Change it when the cut slows, you need extra passes or pressure to remove the previous scratch, or you see heat marks or burnishing. A dull abrasive builds heat and can glaze the surface, which can affect how evenly oils and stains absorb. Keep spare belts of each grit on site for large or dense hardwood floors.

Where can I buy sia abrasives in Australia?

EcoGrit stocks sia floor sanding belts and discs and ships Australia-wide. Orders placed before 12pm AEST, Monday to Friday, are dispatched the same day from our Knoxfield warehouse in Melbourne. Flooring contractors can apply for a trade account for trade pricing, and our technical line on 0401 270 818 can help match abrasives to your machine.