Description
For second-pass surface preparation after coarse stripping, the DED7767G24 is the medium-coarse abrasive in the Dedra DED7767 range — a 370 mm grit-24 disc that levels masonry, refines paint-stripped surfaces, and smooths EPS board faces at machine speed, leaving a clean platform for the flattening pads that follow.
Where the DED7767G24 Grit-24 Pad Performs Best on UK Preparation Work
Old paint layers, adhesive residues, and uneven EPS faces all have to come off before render or basecoat goes on, and hand-sanding a full elevation costs days — the DED7767G24 abrasive disc handles that preparation stage at machine speed, presenting a 370 mm grit-24 face that strips, levels, and smooths across multiple substrates without a tool change. It is stocked in the Renders World power floats and sponges range as the medium-coarse grade of the DED7767 abrasive line.
Grit 24 sits in the medium-coarse band. It is finer than the grit 16 disc — the heavier paint-stripping and aggressive-levelling tool — and works as the second pass that refines the surface before the plastic and polystyrene wear pads take over. Used together, the two grit grades cover the full abrasive preparation stage in a single workflow, and the finish the disc leaves is what determines how cleanly the flattening pass runs.
Why Trade Specifiers Choose the DED7767G24 Grit-24 Pad
- Grit 24 abrasive face: a medium-coarse grade that levels and refines without the deep scoring of coarser discs — the right balance for second-pass preparation.
- True 370 mm working diameter: covers more area per pass than smaller-class machines, reducing pass count on full elevations.
- Multi-substrate capable: strips paint, removes adhesive and plaster residue, levels uneven masonry, and smooths EPS board faces from a single disc.
- EPS-smoothing balance: fine enough to take down proud board joints without damaging the EPS face, a common EWI requirement where boards sit slightly proud.
Technical Specifications — DED7767G24 Grit-24 Disc Data
| Property | Value |
|---|---|
| Disc type | Coated abrasive disc |
| Gradation | Grit 24 (medium-coarse) |
| Diameter | 370 mm |
| Mounting | Hook-and-loop (Velcro), four-point |
| Compatible machine | Dedra DED7767 power float (710 W, 110 rpm) |
| Application | Paint removal · adhesive residue · surface levelling · EPS smoothing |
The disc attaches via the four-point Velcro on the DED776701 mounting disc with no adapter, so swapping grit grades on the same machine takes seconds. It fits the DED7767 platform only — the geometry is not interchangeable with the smaller DED7769 (375 mm class) or competing brands, so confirming the machine model before ordering avoids the most common cause of returns in this category.
How to Apply the DED7767G24 — Grit Progression and Passes
Run the DED7767 at its full 110 rpm and keep the disc moving in overlapping passes, because light, even pressure works better than weight — the 370 mm face cuts when held flat to the substrate, and tilting onto an edge digs the abrasive in and produces gouges that take longer to remove than they took to create. The disc suits removing flaking or weathered paint from masonry, levelling stepped substrate before basecoat, taking down adhesive squeezed from EPS board joints, and refining surfaces already stripped with the coarser grit 16 disc.
Grit progression is the discipline that matters most. For heavy stripping, start with the grit 16 disc, move to this grit 24 disc to refine the surface, then transition to the plastic flattening pad and finer wear pads — skipping the grit 24 stage leaves scoring from the coarser grade that downstream pads cannot fully remove. Where the prepared surface leads into a basecoat, the EPS adhesives and basecoats range covers the next material stage, and the Renders World guide to power floats for render finishing sets out the full pad sequence.
Installation Notes — Pressure, Loading, Replacement
Engage all four Velcro corners onto the mounting disc before powering up, and keep light, even pressure across the full 370 mm face during work, since loading one edge dulls the abrasive prematurely and skews the cut. Inspect the abrasive face as you work: when the grit loads with paint residue, adhesive, or EPS material, cutting speed drops sharply, and replacing the disc at that point is faster than persevering with a loaded face.
A loaded disc also generates more heat, which can soften thermoplastic surfaces such as EPS and produce a glazed finish rather than a clean smooth one — so brushing off accumulated residue periodically protects both the disc and the substrate. Store the disc flat in a dry container between sessions to protect the abrasive and the hook-and-loop backing, and replace once cutting speed no longer recovers after cleaning.
Pro Tips From UK Installers Using the DED7767G24
Most operators run grit 16 too long and grit 24 not enough. The coarser disc cuts fast and feels productive, but the visible scoring it leaves is harder to remove than people expect, and the time saved at the stripping stage gets paid back at the flattening stage. Switching to grit 24 earlier — while the surface still has scoring to remove — produces a cleaner platform for the plastic pad in significantly less total time.
- Switch off grit 16 sooner: move to grit 24 while scoring remains, so refinement happens on the abrasive stage rather than being chased at flattening.
- Let the disc cut, don't force it: light flat pressure across the full face out-cuts heavy edge-loaded pressure.
- Watch for loading on EPS: a clogged face generates heat and glazes the board — clear it before it melts rather than smooths.
- Refine, don't strip, on EPS joints: grit 24 takes down proud joints cleanly where a coarser disc damages the face.
- Keep the surface dry: cutting drops and the abrasive loads faster on damp substrate.
Applicators consistently report that EPS smoothing is where the grit 24 disc earns its keep — hand-sanding board joints across a full elevation is slow, a coarser disc damages the EPS face, and grit 24 hits the balance that leaves a face taking basecoat cleanly without filling.
How the DED7767G24 Compares to the Grit-16 Sanding Disc
The same-stage decision in the abrasive range is grit 24 versus grit 16, and it is settled by how much material has to come off rather than by preference — the two discs work the same sanding stage on the same machine, chosen by grade. Most full preparation jobs use both in sequence, the coarse grade first and the finer grade to refine.
| Variant | Key Spec | When to Choose |
|---|---|---|
| DED7767G24 grit-24 disc (this) | Grit 24 · 370 mm · medium-coarse | Second-pass refinement, EPS smoothing |
| DED7767G16 grit-16 disc | Grit 16 · coarse | First-pass heavy stripping, aggressive levelling |
After the abrasive stages, the plastic flattening pad sets wall flatness before the texture-setting wear pads take over. The grit discs prepare; the plastic and finishing pads refine and close.
Is the DED7767G24 Grit-24 Pad Right for Your Project?
- Second-pass surface preparation, paint refinement, or EPS smoothing: a strong fit — the medium-coarse grade refines without deep scoring.
- Heavy stripping of thick paint or aggressive levelling: the DED7767G16 grit-16 disc is the correct first stage, and this grit-24 disc follows it.
- Flattening after the abrasive stages: the DED77670 plastic pad sets wall flatness before texture-setting wear pads.
- Power floats outside the DED7767 platform: disc geometry and the Velcro pattern will not match — confirm the machine model first.
FAQ — DED7767G24 Use, Grit Choice, Longevity
How long does one DED7767G24 disc typically last in service?
Working life varies sharply with substrate. Stripping painted masonry consumes the abrasive faster than smoothing EPS boards, where the disc lasts considerably longer. As a working guide, a single disc covers a full elevation of paint refinement or several elevations of EPS smoothing before cutting speed noticeably drops.
Will this abrasive disc fit power floats other than the Dedra DED7767?
The DED7767G24 is sized for the DED7767 platform — 370 mm diameter and a four-point hook-and-loop pattern matched to the mounting disc. It is not reliably compatible with the smaller DED7769 (375 mm class) or with other manufacturers' machines, so confirming the model before ordering avoids fitment issues.
When should I use grit 24 rather than grit 16?
Grit 16 is the aggressive first-pass disc for heavy paint stripping or significant levelling — it cuts fast but leaves visible scoring. Grit 24 follows as the refinement pass, removing that scoring and leaving a cleaner platform for the plastic and polystyrene wear pads. Most full preparation jobs use both in sequence.
Can the disc smooth EPS insulation boards on EWI installations?
Yes — grit 24 is the recommended grade for smoothing EPS face surfaces and taking down minor board-joint steps before basecoat, since coarser grades risk damaging the EPS structure. Keep the pressure light and the face clear of loading, as a clogged disc generates heat that softens the thermoplastic surface rather than smoothing it.
How should the disc be handled during work to extend its life?
Keep light, even pressure across the full 370 mm face, since loading one edge dulls the abrasive prematurely. Brush off accumulated residue periodically, because a loaded grit face cuts slowly and generates excess heat, and store the disc flat in a dry container between sessions to protect both the abrasive and the hook-and-loop backing.