Description
Clearing a weathered painted render for re-coat starts with the DED77675 stripping disc — the 400 mm six-bladed steel preparation tool in the Dedra DED7767 system that shears bonded paint, wallpaper residue, and surface deposits at machine speed, ahead of the sanding and finishing pads that follow.
Where the DED77675 Stripping Pad Performs Best on UK Render Sites
The DED77675 is a 400 mm six-bladed steel scraping disc that fits the Dedra DED7767 power float and removes bonded surface material at machine speed, where hand scraping or chemical stripping would take hours. It is stocked in the Renders World power floats and sponges range as the surface-preparation stage of the seven-pad system. The disc earns its keep on refurbishment work where an old painted render needs a full re-coat: the steel blades shear weathered paint and lining-paper residue cleanly from the substrate rather than loading up against it, which is exactly where abrasive pads stall.
The disc sits first in the workflow, ahead of the grid sanding pads. Running the full Dedra sequence from this disc through to the finishing sponge is what turns surface preparation from the time-bottleneck of a refurbishment job into a single machine operation — one operator clearing a surface that would otherwise need hand scraping across a whole trade.
Why Trade Specifiers Choose This Stripping Disc
- Six steel cutting blades: a mechanical shearing action that removes bonded material abrasive pads cannot touch.
- 400 mm working diameter: useful coverage per pass for full-wall preparation rather than spot work.
- Four-strap Velcro mounting: swaps between the stripping disc and finishing pads in seconds on the same machine.
- Replaces hand or chemical stripping: a single machine operator clears the surface that would otherwise need two trades.
Technical Specifications — DED77675 Stripping Disc Data
| Property | Value |
|---|---|
| Working diameter | 400 mm |
| Cutting elements | 6 × steel blades |
| Mounting system | Velcro, four-strap fitting |
| Host machine | Dedra DED7767 power float |
| Required carrier | DED77670 mounting pad |
| Primary function | Surface preparation: paint stripping, wallpaper removal, render levelling |
| Workflow position | Stage 1 (preparation) — ahead of grid 16 and grid 24 sanding pads |
The disc is a system component rather than a standalone tool. Renders World stocks it alongside the matching DED77670 mounting pad, so a single order covers both items needed to put the disc on the machine — the carrier is the Velcro interface between the machine head and the stripping disc.
How to Apply the DED77675 — Sequence, Pressure, Passes
The disc works best at moderate machine pressure with overlapping passes rather than forced contact, because the cutting happens at the leading edge of each blade — the blades need to shear material, not scrape along it, so pressing harder usually slows the work rather than speeding it up. Two slow passes typically clear more bonded coating than one forced pass in the same total time.
Approach an old painted render in sequence: clear loose flaking material by hand first so the disc engages a continuous surface, fit the disc to the DED77670 mounting pad with all four straps fully engaged, then work in straight overlapping passes across the wall. Work top-to-bottom on vertical surfaces so falling debris does not re-deposit on cleared sections. For the full sequence from strip through to finish — which grit follows the strip stage, and how the foam pads close the surface — the Renders World guide to power floats for render finishing covers the complete Dedra pad workflow.
Installation Notes — Mounting, PPE, Replacement
Fit the disc with all four Velcro straps fully engaged before powering up, and confirm engagement visually after a short test pass — the disc should sit flat against the mounting pad with no visible gap, because partial engagement lets the disc lift under load and damages the edge. Eye protection and a particulate-rated dust mask keep the operator safe throughout stripping work, since the blade action lifts flying debris, especially on weathered paint and aged lining-paper where the bonded layer breaks into airborne fragments.
Where the substrate history is unknown, confirm the coating type before stripping and apply current site safety practice for the coating identified — pre-1992 painted surfaces may carry regulated coatings, and matching PPE to the substrate is the standard discipline for this stage. Inspect the blade edges after each substantial job: a sharp disc cuts at moderate pressure, and once edges show visible wear the disc starts scraping rather than cutting, so replacing it at that point protects both the surface finish and the working pace.
How Pros Get the Best Result From This Stripping Pad
Experienced operators treat the DED77675 as the first move on any refurbishment where the existing finish has to come off, and the pattern that delivers the cleanest result follows a short discipline. Renderers consistently report that the difference between a clean strip and a chattered surface comes down to blade condition and machine movement rather than pressure.
- Pre-clear loose material by hand before the first pass, so the disc engages a continuous bonded layer rather than chasing flakes.
- Keep the machine moving in straight overlapping passes — stationary contact polishes the blade rather than cutting the substrate.
- Work top-to-bottom on vertical surfaces so falling debris does not re-deposit on cleared wall.
- Check blade wear at every break on long jobs, since a single worn blade out of six skews the cut and shows as a chatter mark.
- Follow the strip with the grid 16 sanding pad on the same machine for the first abrasive pass before moving to finer grit.
Is the DED77675 Stripping Pad Right for Your Project?
- Paint and wallpaper stripping on rendered or plastered walls: a strong fit — the steel blade action removes bonded coatings at machine speed.
- Initial preparation before a fresh silicone render coat: well suited as the first stage before primer goes on.
- Final-coat sanding and refinement: the grid 24 sanding pad is the right tool at the finish stage — abrasive refinement, not blade stripping.
- Operators without the DED7767 host machine: the disc requires the Dedra power float, so confirm host machine availability before ordering.
FAQ — DED77675 Use, Compatibility, Replacement
Which machine does the DED77675 fit?
The Dedra DED7767 power float, attached via the DED77670 mounting pad — the Velcro carrier between the machine head and the disc. Both the host machine and the mounting pad are required for use, since the disc does not fit the machine head directly. Renders World stocks all three items together.
How much wall area does one pass cover?
At 400 mm working diameter the disc covers a useful area per pass, well beyond hand scraping. The realistic site rate depends on the bonded layer — weathered paint clears faster than thick wallpaper residue — and a single operator on continuous wall clears several square metres per minute at moderate pressure. The technical desk can give project-specific estimates on request.
How does the stripping disc differ from the sanding pads in the same range?
The DED77675 uses six steel blades to cut and lift bonded material — paint, wallpaper, render nibs — while the grid 16 and grid 24 sanding pads use abrasive grids to refine the surface once stripping is complete. The two pad types are sequential rather than alternative: a refurbishment uses the stripping disc first, then a sanding pad, then a finishing pad on the same machine.
Can the stripping pad be used on freshly applied render?
No — the steel blade action is too aggressive for fresh or curing render and would damage the finish. The disc is built for prepared substrates where bonded material needs removing, not for working fresh coatings. Once a new render has cured fully and a refurbishment cycle is due years later, the disc becomes appropriate again at that point.
When should the disc be replaced?
Once edge wear is visible on the steel blades. Sharp blades cut at moderate pressure; worn blades scrape, which marks the surface and slows the work. Inspect the edges after every substantial job and replace once wear becomes obvious — a sharp disc also cuts safely at lower machine pressure, so replacement supports both finish quality and safe operation.