Cleaning tired walls in Galmpton (South Hams)
Rural hamlet inland from Hope Cove.
Where a Galmpton (South Hams) wall has gone patchy rather than evenly dirty, the cause is nearly always local: a downpipe, a hedge, a shaded corner. That is where we look first.
Working out what is wrong on a Galmpton (South Hams) wall
- 01Whether the render is thin-coat or traditional is checked at a bead or a reveal.
- 02A slow walk of the gutter line from the ground finds most of the causes worth fixing.
- 03The angle of morning sun on the elevation tells you how long it stays damp.
- 04The first question is whether the staining sits on the surface or has gone into the material, because only one of those cleans off.
- 05Previous cleaning is usually visible as a slightly different texture rather than a different colour.
- 06Where a wall meets a roof abutment, the flashing is looked at first.
- 07The condition of the cills tells you how much water has been running down the face.
- 08The mortar is tested with a key at a discreet point, since soft mortar sets the whole method.
Material first, method second
- A rendered plinth takes more water than the face above it and is usually the first band to look tired.
- A rendered wall under a failed drip detail restains within a season however well it was cleaned.
- A test patch low down and out of sight is how failing paint is found deliberately.
- Painted plinths take splash and are worked as a separate band from the main face.
- They need the gentlest approach available and a lot of care about how much water goes onto the surface.
- The safest outcome on cob is a lighter, slower improvement rather than an immediate transformation.
Why this keeps happening on TQ7 elevations
- Where a hose reel or water butt overflows against a wall, the staining follows the overflow path exactly.
- The lowest metre of any wall takes splash-back off the path and stains from the ground up, not the top down.
- The first sign is usually a faint grey cast rather than green, and grey is easier to ignore.
- Where a wall was cleaned without a biocide, the regrowth is often patchier and faster than the original.
- A textured coating applied over an already dirty surface holds that dirt as a feeding layer.
- Pebbledash holds water in the shadow of every stone, so it stays damp long after a flat render has dried.
- Driven rain sticks to a wall face rather than running off it, which keeps the surface wet long enough for spores to settle.
- Where a wall carries a heavy climbing plant, the fabric behind it is nearly always damper than the rest.
- Prevailing wind decides which elevation takes driven rain, and that elevation is nearly always the tired-looking one.
On site in Galmpton (South Hams)
- 1.Fence panels tight against a wall are wetted first so run-off does not sit on dry timber.
- 2.Every hose junction is checked before pressure goes on, because a burst at a coupling floods a border.
- 3.Vents, extractor terminals and trickle vents get taped, because water pushed into them is the one thing that turns an exterior job into an interior one.
- 4.Where a porch roof sits mid-elevation, it is sheeted and its own tiles cleared before the wall above is touched.
- 5.Sheeting comes off from the top down so nothing collected on it lands on cleaned work.
- 6.Mortar joints that have already lost material are pointed out and left alone rather than washed further open.
- 7.A final walk of each finished elevation happens with the property owner where they are home, and by photograph where they are not.
- 8.Fixings for hanging baskets and washing lines are unloaded before the elevation is worked, then put back.
- 9.Any window left open is closed, or that section is skipped and left for a second visit.
- 10.Cable clips, aerial brackets and old fixings are noted, and loose ones are left rather than pushed further.
Local detail that changes the job
- Thurlestone sits about 2.1 miles from Galmpton (South Hams) on our round, so visits are often shared.
- Nearest full coverage hub: Thurlestone (TQ7), South Hams District Council.
- Typical wall finish here is cob and painted render, which sets the cleaning method.
- Access is usually via local lanes off A381.
- Typical roof covering here is slate and thatch, which affects what washes down onto the walls.
Preparing a coastal hamlet property
- Tell us about any previous treatment that came back quickly, and how quickly.
- Close and latch every window on the elevations being worked, including any small top lights.
- Bring in washing, cushions and anything fabric that lives against the wall.
- Mention shared access or a right of way that we will be crossing.
- Warn us about a soft lawn or an unmade drive so boards come on the van.
- Say whether the elevation backs onto a public footpath.
- Say where the outside tap is, and whether it runs at any pressure.
- Note any external socket or garden power run near the base of the wall.
What to book before and after the walls
Where only walls are being done, the gutter line is still checked, because it is the usual culprit behind the worst staining.
Fascia and soffit cleaning is folded into the wall visit rather than being priced as a separate trip.
Patio joints are checked before the wall above them is treated, since loose sand washes into puddles.
Glass is done last on any multi-service visit, since it picks up whatever the earlier stages put in the air.
Straight answers before you book
- Do you need my electricity?
- No. Kit runs off the van.
- Do you clean stonework?
- Yes, with the method set by the softest part of the wall, which is almost always the mortar.
- Can lichen be removed completely?
- The organism is killed, and what is left weathers off. Deeply rooted lichen on stone can take a season to fade.
- Can you treat a wall that has already been jet washed?
- Yes. The damaged band is worked at a reduced strength because it is more open than the rest.
- Can you clean a wall before painting?
- Yes, and it should be done first. Paint over live growth fails from underneath.
- Can you tell from a photo whether it will clean up?
- Usually yes for surface growth. Staining that is in the material is harder to judge without seeing it.
- Will the drive get messy?
- Anything below the elevation is rinsed off before we finish.
- Do you have a minimum size of job?
- A single gable or a porch is still worth doing properly.
Other Devon places on the same round
The essentials
Anything that keeps a wall wet for longer will bring the growth back sooner, whatever product goes on it. Every visit ends with the elevation judged from where people actually see it. Getting the order of work right protects the money already spent on the parts that were cleaned first. Monday to Saturday, 8am to 7pm.
Ask what method we would use
Tell us what the wall is finished in and we will tell you exactly how we would approach it before any money is discussed.
Quote for a Galmpton (South Hams) property
Monday to Saturday, 8am – 7pm