Description
Renders World stocks the Dedra DED7767 as the host platform for the full DED7767 pad ecosystem — a 710 W direct-drive plastering trowel running a 390 mm head at 110 rpm, supplied with three starter discs covering basic floating, primary smoothing, and Velcro mounting.
Where DED7767 Earns Its Place on UK Render Sites
The Dedra DED7767 is a 710 W single-head power float that runs a 390 mm disc at 110 rpm, designed to strip, sand, and finish lime cement, gypsum, and thin-coat render surfaces on UK plastering and rendering projects. It is stocked in the power floats and sponges range at Renders World as the host machine for the seven-pad DED7767 system. The case for adopting the tool is straightforward: one machine, one mounting interface, and pad swaps that take seconds replace three separate hand operations across the same job, so the time saved on bulk prep and finishing is what justifies the kit on a working site.
The 4.3 kg working weight matters because UK render work happens almost entirely on vertical substrates. A heavier machine fatigues quickly when held against a wall; a lighter machine skates and chatters under load. The DED7767 sits in the middle of that band, which is why it serves on both floor screed finishing and external thin-coat render passes without needing two tools.
Why This Power Float Saves Time on Site
- Direct-drive 710 W motor — sealed gearbox runs the head without belts, clutches, or slip points that need annual replacement on rental-spec machines.
- Velcro four-strap mounting — pad changes between strip, sand, and float stages take under thirty seconds, which is the productivity case for owning the kit rather than hiring a single-function machine.
- 110 rpm controlled head speed — fast enough to work continuous areas efficiently, slow enough that the machine stays controllable in one hand on vertical render.
- 4.3 kg working weight — light enough for sustained wall use, balanced enough to resist skating under moderate hand pressure.
- Full starter pad set included — sponge disc, PVC primary floating disc, and Velcro mounting disc supplied in the box, so first-day floating work needs no additional purchase.
Technical Specifications — DED7767 Data Sheet Highlights
| Property | Value |
|---|---|
| Voltage | 230 V (UK mains) |
| Power | 710 W |
| Drive type | Direct (sealed gearbox, no belt) |
| Head rotational speed | 110 rpm |
| Head diameter | 390 mm (400 mm pad envelope) |
| Working weight | 4.3 kg |
| Mounting system | Velcro, four-strap |
| Motor type | Brushed, electrographite brushes (replaceable) |
| Power supply | Mains corded |
| Manufacturer warranty | 3 years (Dedra factory) |
The combination of moderate rotational speed and direct drive is what distinguishes this class of machine from variable-speed sanders or polishers. A finishing operation needs consistent rpm under load; 110 rpm holds steady under the back-pressure of float work, where a variable-speed tool would dip and need throttle adjustment every few seconds.
How to Use DED7767 Effectively on UK Sites
Fit the Velcro mounting disc first and confirm all four straps are fully engaged before attaching any working pad — a half-seated strap shifts the centre of rotation and chatters the head against the surface. Power up the machine before contacting the wall or floor. Starting under load draws excessive current through the carbon brushes and shortens their service life noticeably over a few jobs.
Work in overlapping circular passes at moderate pressure. The disc does the cutting, sanding, or floating action; forcing the machine into the surface only loads the motor and degrades finish quality. On vertical wall work, support the body with the off hand on the secondary grip — the rotational reaction torque needs counter-bracing to keep the head flat against the substrate.
The standard sequence on a render strip-and-refinish job runs stripping pad first, then coarse sanding, then fine sanding, then float. The power floats for render finishing guide from Renders World covers full pad selection logic across the workflow stages and the technique adjustments each one needs.
Pad Compatibility — Building a Full Workflow With DED7767
The machine ships with three starter discs, but the productivity case for the kit only fully opens up once the surface-preparation and grit pads are added. Each pad mounts to the same Velcro disc and swaps in seconds, which is the workflow benefit the machine is designed around.
- Surface preparation: the DED77675 steel-blade stripping pad removes paint, wallpaper, plaster nibs, and bonded coatings before any new render or plaster goes on.
- Coarse refinement: the grid 16 sanding pad takes down stripped or rough surfaces in the first sanding pass.
- Fine refinement: the grid 24 sanding pad follows the grid 16 pass and leaves a surface ready for floating or priming.
- Internal floating: the DED77671 polyurethane foam pad floats and smooths internal lime cement and gypsum plaster, giving a closed, even surface texture.
- External render finishing: the DED77674 polystyrene pad opens up the texture on external thin-coat silicone render and acrylic surfaces, working the grain to a consistent finish.
- Primary floating (supplied): the DED77670 PVC primary floating disc is the same pad as the one in the box, available separately as a replacement when the original wears.
How Pros Get the Best Result From This Power Float
Installers consistently report that the difference between a clean finished surface and a chattered one comes down to two habits. First, change pads between stages rather than trying to push a single pad across two grit ranges. The PVC starter disc is a primary float, not a finishing pad; the grid 24 is a fine sander, not a stripper. Matching the pad to the stage is what the Velcro system exists to make easy. Second, walk the machine across the surface in slow, overlapping circles rather than long straight passes. Circular work blends the edges of each pass and produces a uniform finish; straight passes leave visible bands that take extra time to dress out.
On EPS basecoat surfaces being prepared for thin-coat render, the grid 16 pad does the bulk of the refinement work after the basecoat has cured. Keep pressure light at this stage — the basecoat is the reinforcement layer, and aggressive sanding can expose mesh. Renders World ships the full pad family from UK stock alongside the machine, so the kit can be built up by stage rather than all at once.
After each substantial job, clean residue from the head and Velcro disc, and inspect the carbon brushes through the access caps on the housing. The machine ships with a replacement electrographite brush set in the box — once the originals wear down to the point that the motor sounds different under load or sparking becomes visible at the access caps, swap them in through the access caps with the included screwdriver. No disassembly is needed, and the swap takes around five minutes.
Is DED7767 Right for Your Project?
- Internal plaster finishing on lime cement or gypsum walls: well suited — supplied pads handle basic floating, with the polyurethane foam pad available for fine finishing.
- External thin-coat render finishing: ideal with the polystyrene pad — the different friction profile suits silicone and acrylic textures.
- Surface preparation and stripping work: add the steel-blade stripping pad for paint, wallpaper, and bonded coating removal on refurbishment projects.
- Battery-only sites with no mains access: the DED7767 is a 230 V mains tool, so cordless-only sites need an alternative machine outside this pad system.
FAQ — DED7767 Use, Maintenance, Coverage
What is included in the DED7767 box?
The machine ships with a sponge disc, a PVC primary floating disc, a Velcro four-strap mounting disc, a screwdriver for brush access, and a replacement electrographite brush set. Add-on pads — stripping disc, grid 16, grid 24, polyurethane foam, polystyrene — are sold separately as part of the wider Dedra range stocked by Renders World.
Can DED7767 be used on walls as well as floors?
Yes. At 4.3 kg the machine is light enough for sustained vertical use, and the 110 rpm head speed stays controllable on wall surfaces. Counter-brace the rotational torque with the off hand on the secondary grip for fine control, and let the disc cut at moderate pressure rather than forcing the head against the substrate.
Which pads work with DED7767?
The full Dedra DED7767 pad family attaches via the same four-strap Velcro mounting disc supplied in the box: stripping disc, grid 16 and grid 24 sanding pads, polyurethane foam pad for internal plaster, polystyrene pad for external render, and the included PVC and sponge primary floating discs. Each is stocked individually so the kit can be built stage by stage.
When should the carbon brushes be replaced?
Replace once the original brushes wear down to the point that the motor sounds different under load, or sparking becomes visible through the access caps. The replacement electrographite brush set supplied in the box is the direct swap-in — fit through the access caps with the included screwdriver. No machine disassembly is needed and the swap takes around five minutes.
How much surface can DED7767 cover in a working day?
Coverage depends on the stage of work and the operator, but as a working benchmark a single operator running stripping, sanding, and floating sequentially with quick pad changes typically covers two to three times the surface area achievable by hand methods over the same shift. The time saving comes from the Velcro pad changes rather than from the head speed, so the kit pays back fastest on jobs with multiple workflow stages on the same wall.
Technical Documentation — DED7767 TDS