Description
The Dedra DED7767G16 abrasive disc is the coarse-grade first-pass face for the DED7767 power float: a 370 mm grit-16 sanding disc that strips thick paint, levels stepped substrates, and clears proud adhesive ridges at machine speed. Renders World stocks it as the aggressive opener of the Dedra preparation sequence — the disc that turns days of hand-stripping into hours of machine work.
Where the DED7767G16 Grit Disc Earns Its Place on UK Render Sites
Thick weathered paint on Victorian masonry, proud adhesive squeeze-out across an EPS elevation, or stepped substrates that finer abrasives cannot clear in reasonable time — grit 16 is the disc the trade reaches for when significant material has to come off before any refinement begins. Browse the wider Renders World power floats and sponges range for the complete preparation sequence that surrounds this disc.
The 370 mm grit-16 face cuts fast through layered paint, weathered render and contaminated substrate, opening up a working surface that finer pads cannot reach until the coarse work is done. Trade applicators who treat the disc as the aggressive first stage of a two-grade sequence consistently produce preparation work that downstream pads close in fewer total passes — and the visible scoring grit 16 leaves is what grit 24 is engineered to refine away.
Why This Grit 16 Disc Saves Time on Site
- Coarse grit-16 abrasive: the aggressive cutter that thick paint, heavy levelling and proud adhesive demand — finer grades cannot match its first-pass speed.
- True 370 mm working diameter: covers more square metres per pass than smaller-class machines, accelerating heavy preparation on full elevations.
- Multi-substrate capable: strips paint from masonry, removes adhesive ridges from EPS board joints, levels stepped substrates, and abrades back unsound render or basecoat.
- Hours instead of days: machine stripping at 370 mm contact reduces hand-sanding labour on heavy preparation work to a fraction of the manual time.
- Direct fit DED7767 platform: attaches via the four-point Velcro on the standard mounting disc — no adapter or modification required.
Technical Specifications — DED7767G16 Abrasive Disc Data
| Property | Value |
|---|---|
| Disc type | Coated abrasive disc |
| Gradation | Grit 16 (coarse) |
| Working diameter | 370 mm |
| Mounting system | Hook-and-loop (Velcro), four-point |
| Host machine | Dedra DED7767 power float |
| Workflow position | First-pass abrasive stripping — before grit 24 refinement |
| Compatible substrates | Thick paint · adhesive ridges · stepped masonry · unsound render |
| Manufacturer reference | DED7767G16 (Dedra, Poland) |
The values above are confirmed against the Dedra manufacturer specification for the DED7767G16 disc. The 370 mm diameter is intentionally smaller than the 400 mm wear-pad family because aggressive abrasive cutting is most controlled at a slightly tighter footprint — a wider coarse face would be harder to keep flat against the substrate, with predictable consequences for finish quality on downstream stages.
How to Use the DED7767G16 Effectively on UK Sites
The disc cuts hard, and that property is the reason for the discipline it demands. Pausing in one spot leaves a visible depression that the rest of the preparation sequence has to flatten back out; tilting onto an edge produces gouges that take significant time to recover. The technique that consistently works is light, even pressure across the full 370 mm contact face, with the machine moving in steady overlapping passes.
Approach a heavy paint-stripping pass in this sequence: clear loose flaking material by hand first so the disc engages a continuous bonded layer, engage all four Velcro corners onto the mounting pad, then sand the elevation in overlapping straight passes. Two slow passes typically clear more bonded paint than one forced pass — heat builds quickly in the abrasive face under high pressure, and a hot disc cuts more slowly than a moving one.
For the full preparation-to-finishing sequence on UK projects, the power floats for render finishing guide covers each stage with technique notes from UK installers, including the grit-16-to-grit-24 transition and the substrate condition checks worth running before fitting either disc.
Installation Notes — Mounting, Pressure, Replacement
Engage all four Velcro corners onto the DED776701 mounting disc before powering up the machine. A coarse abrasive disc that walks under load cuts unevenly within seconds and prints scoring patterns that the grit 24 pass struggles to remove fully. A brush-down of the Velcro on both faces between elevations keeps grip at full strength — embedded paint dust and adhesive fines accumulate quickly on coarse-grade work.
Eye protection and a particulate-rated dust mask are non-negotiable for grit 16 work. Aggressive abrasion lifts more airborne material than finer grades, and stripping painted surfaces compounds the risk — pre-1992 coatings may contain regulated materials, so check substrate history before starting and apply current site safety practice for the specific paint type identified. Site extraction or wet methods are worth considering on heavily contaminated substrates.
Replace the disc once the abrasive grit loads with paint residue or adhesive. A loaded disc cuts noticeably slower, runs hot, and on EPS faces the heat softens the polystyrene into a glazed surface rather than abrading it cleanly. Finishing trades typically rotate two grit-16 discs across heavy stripping days, since the time recovered by fitting a fresh disc considerably exceeds the cost of the disc itself.
How the DED7767G16 Compares to the Grit 24 Sibling Disc
The DED7767G16 pairs with one direct sibling in the Dedra abrasive range. The table below shows the relationship between the two grit grades on a typical preparation job.
| Variant | Key Spec | When to Choose |
|---|---|---|
| DED7767G16 grit 16 disc | Coarse abrasive, 370 mm | First-pass stripping and aggressive levelling |
| DED7767G24 grit 24 disc | Medium-coarse abrasive, 370 mm | Second-pass refinement and EPS smoothing |
The two grades are sequential on most heavy preparation jobs: grit 16 cuts fast through thick paint and proud material, and grit 24 follows to refine the surface and remove the scoring before the plastic flattening stage. Running grit 16 alone is the most common avoidable mistake on this category — the visible scoring it leaves costs more time at downstream stages than the grit 24 refinement pass takes to complete.
How Pros Get the Best Result From This Grit 16 Disc
Experienced operators treat the DED7767G16 as the aggressive opener — not the whole solution. The pattern below is what consistently delivers a stripped substrate that the rest of the preparation sequence can work with.
- I stop grit 16 sooner than instinct suggests: the disc feels productive long after the substrate has had enough — switch to grit 24 before scoring becomes the new problem.
- I keep light pressure across the full disc face: grit 16 cuts hardest when held flat — loading one edge gouges the substrate without speeding the work.
- I work overlapping passes in straight lines: stationary contact cuts a visible depression in seconds, and curved or wandering passes are harder to flatten back.
- I retire loaded discs immediately: a clogged grit face cuts slowly, runs hot, and on EPS the heat damages the substrate.
- I plan grit 16 and grit 24 as a single workflow: the two grades are stages of one preparation pass, not alternatives — running both is what makes the work clean.
Is the DED7767G16 Grit Disc Right for Your Job?
The disc is an aggressive first-pass tool with a specific workflow position. The bullets below help confirm where it fits.
- Heavy paint stripping or aggressive substrate levelling on the DED7767: a strong fit — the grit 16 grade clears in minutes what finer abrasives need an hour for.
- Initial roughing of EPS faces or proud adhesive removal: well suited — pair with EPS adhesive and basecoat preparation on the same day to maintain working window on EWI installations.
- Second-pass refinement after coarse work is complete: use the DED7767G24 grit-24 disc for the refinement stage that follows this disc.
- Flattening pass after both abrasive stages: the DED77670 plastic float pad takes the surface from stripped-and-refined to flat-and-ready for the texture pads.
- Light surface refinement only, or projects outside the DED7767 platform: grit 16 is more aggressive than light work demands, and the disc geometry will not fit non-DED7767 machines.
Order the DED7767G16 alongside the matching grit 24 disc for the complete two-stage abrasive set, or contact the Renders World technical desk for advice on building the full preparation-to-finishing pad sequence for a specific stripping or EWI programme.
FAQ — DED7767G16 Use, Compatibility, Replacement
Which machine does the DED7767G16 fit?
The Dedra DED7767 power float exclusively. The 370 mm working diameter and four-point Velcro pattern match the DED7767 mounting plate through the standard carrier — no adapter required. Smaller Dedra machines in the 375 mm class and other manufacturers' power floats use different geometry and will not match reliably.
How long does one DED7767G16 disc typically last in heavy stripping service?
Working life varies sharply with substrate condition. Stripping thick weathered paint consumes the abrasive significantly faster than EPS roughing or adhesive clearance, where the disc lasts considerably longer. As a working guide, a single disc covers a substantial elevation of paint-stripping work before cutting speed noticeably drops; lighter applications stretch life much further.
When should grit 16 be used rather than grit 24?
Grit 16 is the correct first-pass choice when there is significant material to remove — thick paint layers, stepped substrates, or proud adhesive ridges that finer grades cannot clear in reasonable time. The grit 24 disc takes over for the refinement pass that follows. For light surface preparation only, starting on grit 24 alone is often sufficient and avoids the scoring that grit 16 leaves behind.
Can the disc be used to rough down EPS insulation board faces?
Yes — grit 16 handles initial roughing of EPS faces where significant material removal is required, such as proud adhesive squeeze-out from board joints or stepped board faces. For lighter EPS smoothing where the face only needs final levelling, the grit 24 disc is the safer choice; it removes less material per pass and reduces the risk of cutting too deep into the polystyrene structure.
What if grit 16 leaves scoring deeper than expected?
Visible scoring after grit 16 work is normal and is removed by the grit 24 refinement pass. If scoring is unusually deep, ease pressure on subsequent passes — the disc cuts through weight rather than force, and lighter even passes leave a more uniform surface than aggressive loading. The power floats for render finishing guide covers technique adjustments and grit-progression sequencing in more detail.
How should the disc be handled to extend its working life?
Keep light, even pressure across the full 370 mm face — overloading one edge dulls the abrasive prematurely and produces uneven cutting. Brush off accumulated paint or adhesive residue periodically, since a loaded grit face cuts slowly and runs hot. Storing the disc flat in a dry container between sessions protects both the abrasive grit and the hook-and-loop backing from damage.