Painters Slanghoek

Painters treating damp on a house in the Slanghoek Valley

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Damp diagnosed before anything is painted, because coating over it just buys you one season
Roughly 15 minutes from our Rawsonville base, so follow-up visits are easy to arrange

Damp, Mould and Repainting in the Slanghoek Valley

Slanghoek catches noticeably more rain than the open valley floor and its mountain-facing slopes hold shade for much of the day in winter. The practical result is that south and mountain-facing walls stay damp long after a wet spell, and that is where you see black spotting, green algae growth and coatings breaking down from underneath. It is not a paint quality problem, it is a moisture problem, and painting over it changes nothing.

The sequence that actually works is fungicidal wash, dwell time, rinse, then a proper dry-out before any coating goes near the wall. Skipping the dwell time is the usual shortcut. Spores survive a quick scrub and push straight back through a new coat within a season, which is why so many valley houses look like they need repainting eighteen months after they were painted.

Slanghoek Painting and Damp Prices

Job	What is included	Indicative price
Exterior repaint, single-storey house	Wash, treatment, repairs, two coats	R22 000 – R38 000
Guest cottage exterior	Per unit, prepared and two coats	R9 000 – R18 000
Fungicidal wash and mould treatment	Per m², applied, dwelled and rinsed	R35 – R70
Interior repaint, three bedrooms	Walls and ceilings, two coats	R15 000 – R25 000
Roof waterproofing, flat or parapet section	Per m², prepared and membrane applied	R290 – R480
Damp proofing to an internal wall	Per linear metre, strip, treat, replaster and coat	R500 – R950
Timber deck or pergola resealing	Per m², cleaned and two coats of sealer	R120 – R220
Gutter and fascia repaint	Per linear metre	R110 – R190

Damp work is the one line item worth being fussy about. A quote that lists damp proofing as a single figure with no method attached is a guess. Ask which type of damp was identified, what the treatment is, and what happens if it returns. Wall painting prices assume the surface is dry when work starts, which in this valley is a scheduling question as much as a pricing one.

When the Valley Is Dry Enough to Paint

Slanghoek has a shorter usable exterior season than the towns out on the valley floor, so timing matters more here.

October to April is the working window. Outside it, walls simply do not dry through between rain events.
The wall has to be dry all the way through, not dry to the touch. After a wet week, allow three to five dry days before coating. A moisture meter reading under about 15% is the practical go-ahead.
Work south and mountain-facing walls in the middle of the day when they get whatever direct sun they are going to get. Save north walls for early morning or late afternoon.
Stop exterior application by around three in the afternoon in autumn. The valley cools quickly and dew forms early, which ruins a film that has not set.
Guest cottages are easiest to schedule in the shoulder weeks either side of peak season, and a cottage exterior is usually a two to three day job.
Interior work carries on through winter without difficulty, provided the room can be ventilated on dry days.

Damp proofing and mould treatment on a Slanghoek wall

Coatings That Resist Mould and Algae

In a shaded, higher-rainfall valley, the difference between a coating that lasts and one that does not is mostly about breathability and biocide.

Exterior walls: an acrylic with a biocide in the film, such as Dulux Weathershield or Plascon Wall & All. Understand what the biocide does though. It slows regrowth on the new film; it does not kill what is already in the wall, which is why the fungicidal wash comes first.
Older solid walls: a breathable or mineral-type coating so moisture inside the wall can escape. This is the opposite of what most people assume, which is that a wetter area needs a more waterproof paint.
Never apply a high-build waterproofing membrane to a damp solid wall. It traps water behind the film, and the film lifts off in sheets along with the plaster face.
Bathrooms and kitchens in cooler cottages: a mould-resistant low-sheen such as Plascon Kitchens & Bathrooms. Matt PVA in a cold, poorly ventilated bathroom will spot within a year.
Roofs and parapets: acrylic membranes work well on most details, torch-on where the junction demands it. Leaks in this valley almost always start at flashings, parapet junctions and around chimneys rather than in the open field of the roof.
Exposed timber: a penetrating oil sealer, recoated every twelve to eighteen months on the faces that take direct sun and rain.

Painting Services We Cover in Slanghoek

Slanghoek Damp and Painting Questions

The mould came back within a year. Why?

Almost always because the wall was washed rather than treated. A fungicidal wash needs time on the surface to work, then a rinse, then a genuine dry-out. If it was scrubbed and painted the same day, the growth was still alive under the new coat. The other common cause is a moisture source nobody dealt with, such as a leaking gutter or ground level sitting above the damp course.

Should I waterproof the whole wall to stop damp?

Usually not. Sealing the outside of a wall that is wet from below or from inside traps the moisture and makes the damage worse. The right answer depends on which type of damp it is, and rising, penetrating and condensation damp each need a different fix. Diagnosis first, then a method.

How do you know when a wall is dry enough to paint?

A moisture meter, plus judgement about what the weather has done in the previous week. Surface dryness means very little in this valley; a wall can feel dry and still be holding water 20 mm in.

What does damp proofing cost?

Internal wall treatment runs roughly R500 to R950 per linear metre depending on how much plaster has to come off and go back. Getting a fixed figure requires seeing it, because the cost is driven by the extent of failed plaster rather than the wall length.

Can you paint a guest cottage between bookings?

Yes. A cottage exterior is generally two to three days, and interiors can be done room by room. Water-based products mean the room is usable again quickly rather than smelling of solvent for a week.

Planning a paint job in Slanghoek? Contact Painters Rawsonville for a free, no-obligation quote with the preparation, coats and products written into it.

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