Can you clean render on an insulated system?

Yes, with extra care around bead edges where water should not be driven in.

How often does this need doing?

It depends entirely on shade and exposure. An open elevation holds a long time; a permanently shaded one comes back sooner.

How long before I can repaint?

Several dry days after the wall has been treated and rinsed.

What if I only want the front done?

That is the most common request on this kind of job.

What about air bricks and vents?

Covered for the duration, uncovered before we leave.

Is it safe around pets?

Keep them indoors during application and for a couple of hours after, and there is nothing to worry about.

Can the whole outside be planned in one go?

Yes, and getting the order right matters more than doing it all at once.

What if the render is hollow in places?

It is tapped and mapped first, and hollow sections are treated dry-side only rather than soaked.

PL9 - Devon - 6.6 miles from PL3

Green walls in Worswell? Start here

Worswell property owners usually call about colour rather than dirt. Growth flattens the tone of a painted render and stone finish long before anyone would call the wall unclean.

The wall finishes we meet around PL9

Cracks in render change the staining pattern, because water then sits behind the face as well as on it.
A rendered wall under a failed drip detail restains within a season however well it was cleaned.
Where a painted wall has been patch-repainted, the patches clean at a different rate.
A weaker mix and a longer wait suits paint better than anything stronger and faster.
Copings on stone boundary walls take the worst of the weather and the worst of the growth.
Lime mortar in a stone wall is softer than the stone by design, and that design is worth respecting.

Conditions around Worswell that feed growth

Concrete render plinths wick moisture upward from the ground more readily than the face above them.
North and east elevations dry last and green first, in that order, on nearly every property.
Sheltered gable ends collect airborne spores because there is no wind to move them along.
A path that slopes towards a house rather than away from it keeps the base of the wall wet after every shower.
Where a wall sits below a bank or a raised garden, water arrives at it sideways rather than from above.
Shading from a neighbouring building can matter more than the aspect of the wall itself.
A wall that never takes direct sun stays damp for hours after everything else has dried, and that extra time is the whole story.
Growth on a painted wall often sits on top of a paint film that has already begun to chalk.
Ivy pulled off a wall leaves suckers and a shaded, damp face that greens quickly afterwards.

Checks made before anything is applied

01Hollow-sounding render is checked by tapping before any water is put onto it.
02The age of the finish is estimated before a strength of mix is chosen.
03Weep holes are counted and checked for blockage while the wall is being read.
04Efflorescence is distinguished from lichen before anything is applied, since one is salt and one is alive.
05A short section of hose test shows whether run-off drains away or ponds at the base.
06The elevation is read from the pavement first and from a metre away second.
07A damp meter reading inside a stained corner separates a cleaning job from a building problem.
08The presence of moss rather than algae suggests standing water rather than damp air.

What happens on the day

1.Old paint flakes are removed by hand before treatment rather than blown around by water.
2.Where the growth sits mostly in the lower metre, that band is treated twice and the rest once.
3.Rainwater goods are checked while the elevation is being worked, since a blocked hopper explains most single-strip staining.
4.Where a wall has been previously jet washed, the damaged band is treated at a reduced strength.
5.Cills, frames and glass are wiped down as the masking comes off, so nothing dries as a film on the joinery.
6.Anything applied is applied once and given time, rather than applied twice in a hurry to look busy.
7.Any electric meter box, alarm bell or external socket is bagged before the lance comes out.
8.Painted elevations get a small test patch first, low down and out of sight, so failing paint is found deliberately rather than by accident.
9.Vents serving a boiler or flue are checked and left uncovered, with the elevation around them worked dry.
10.Work stops if a wall turns out to be wetter inside than out, because cleaning is not the answer to that.

Access and preparation

If a security light or camera covers the elevation, tell us so it can be isolated.
Mention whether the drive drains to a soakaway that already struggles in heavy rain.
Let us know if the property is listed or in a conservation area, as it affects method choice.
Note where hoses can be run without crossing a doorway.
Flag any recent repair or repaint, because fresh work is treated more gently.
Warn us about a soft lawn or an unmade drive so boards come on the van.
Note where the electricity meter and consumer unit sit relative to the wall.
Tell us about pets in the garden before the day rather than on it.

Coverage and travel

Typical wall finish here is painted render and stone, which sets the cleaning method.
Postcode district: PL9. County: Devon. Approx 6.6 miles from the PL3 base.
Access is usually via Wembury Road.
Typical roof covering here is slate, which affects what washes down onto the walls.
Wembury sits about 0.6 miles from Worswell on our round, so visits are often shared.

See everywhere we cover in PL9

Practical questions answered

Can you clean render on an insulated system?: Yes, with extra care around bead edges where water should not be driven in.
How often does this need doing?: It depends entirely on shade and exposure. An open elevation holds a long time; a permanently shaded one comes back sooner.
How long before I can repaint?: Several dry days after the wall has been treated and rinsed.
What if I only want the front done?: That is the most common request on this kind of job.
What about air bricks and vents?: Covered for the duration, uncovered before we leave.
Is it safe around pets?: Keep them indoors during application and for a couple of hours after, and there is nothing to worry about.
Can the whole outside be planned in one go?: Yes, and getting the order right matters more than doing it all at once.
What if the render is hollow in places?: It is tapped and mapped first, and hollow sections are treated dry-side only rather than soaked.

Neighbouring places we work

Ask about doing it in stages

Front now, the rest later is a perfectly sensible way to do it.

Ask about stages 07830 242403

Summary

The wall is nearly always sound. What has changed is what is living on it. Read the staining pattern first and the answer usually names itself. The mortar is the weakest link on most walls, so the mortar sets the pressure. Monday to Saturday, 8am to 7pm.

Quote for a Worswell property

Monday to Saturday, 8am – 7pm