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White rendered house wall part way through softwashing, with green and red algae streaks cleared from one half and still visible on the other, of the kind we carry out around Sabden
Sabden, BB7

Render Cleaning in Sabden

Low pressure softwashing that kills green and red algae at root level without opening up the render.

Family-run

Justin and the team do the work. No call centres, no subcontractors.

Fully insured

Full public liability cover on every job, domestic or commercial.

Safe methods

Biodegradable products and low pressure, matched to the surface.

Free quotes

No obligation, and no charge for coming out to look at the job.

Render Cleaning for Sabden property

We are about 12 minutes from Sabden, so a quote visit does not need to wait for a gap in the diary. Rendered walls green up first on the shaded north and west elevations, and the streaks almost always start at a sill, a gutter joint or a wall head where rainwater runs the same line. Housing across BB7 covers older stone cottages and converted farm buildings, which is why we look at the actual surface before quoting rather than pricing off a photograph.

Growth comes back fastest on the north and west facing walls, and around Sabden that is most of what we get called out to.

Render cleaning is a softwash: low pressure water, no stronger than a garden hose, carrying a biodegradable biocide that kills algae, mould and lichen in the surface of the render. The wall is wetted down, treated, given proper dwell time and then rinsed gently. The growth dies at root level and the discolouration lifts over the following days and weeks. No lance, no rotary head, and no pressure that could open the render or push water behind it.

While we are in Sabden we regularly pick up work in Read, Padiham, Barrow and Whalley, so if a neighbour wants the same job doing we can usually do both in one visit.

Suitable for

  • K-Rend and other through-coloured silicone renders
  • Monocouche render on newer housing and extensions
  • Painted render and pebbledash on older Lancashire property
  • Rendered gables, dormers and chimney stacks
  • Rendered garden, boundary and retaining walls
  • External wall insulation systems where the surface must not be opened

Problems it solves

  • Green algae streaking down from sills, window heads and gutter joints
  • Red or pink algae patches that look like the wall is staining from inside
  • Black spotting and mould on shaded north and west elevations
  • White render gone a uniform grey so it no longer matches the trim
  • Being told the wall needs repainting or re-rendering when it only needs cleaning
  • Damage risk from a general cleaner turning up with a pressure lance

How a Sabden job runs

  1. Identify the render system

    We establish what the wall actually is: K-Rend, another silicone render, monocouche, sand and cement with paint, or an insulated system. The system dictates dilution, dwell time and how the elevation is rinsed.

  2. Protect the surroundings

    Planting, lawns, block paving, glazing, timber and garden furniture below the work area are wetted down and sheeted. Wetting plants first is what stops any solution being taken up by the roots.

  3. Test patch where needed

    On an older coating, an unusual finish or a colour we have not treated before, we do a small area out of sight first and let it react fully before committing to a whole elevation.

  4. Low pressure application

    Biocide is applied at garden hose pressure from the top down, in sections, so no part of the wall dries out before it has had its dwell time. Coverage is even from edge to edge and corner to corner.

  5. Dwell and gentle rinse

    The solution is left to work and then rinsed off gently. Some discolouration lifts on the day. Red algae and heavy lichen keep fading for days or weeks afterwards as the dead growth weathers away.

  6. Final walk round

    We check the elevation from the ground in daylight, rinse down everything below it, and flag what we noticed: a cracked bead, a blocked weep hole, the leaking gutter joint that caused the streak.

Got Questions?

Render Cleaning in Sabden: your questions

Render Cleaning in Sabden

Free quote, no obligation. We are 12 minutes away, so it is no trouble to come and look at the job.