House washing in Wahroonga
The exterior cleaning job in Wahroonga is a careful one. Federation and interwar houses in timber and brick have painted weatherboards, shingled gables, deep verandahs with timber fretwork, and roofs of slate or terracotta, all shaded by big trees. Mould and algae grey the south side, lichen and moss settle on roofs, and gutters overflow with leaves and stain the fascias beneath. Sandstone front walls, steps and garden edging darken and grow moss. Modernist houses add flat roofs, big eaves and expanses of glass. Owners book a soft wash of walls and verandahs, gutter clearing, a roof treatment and a sandstone clean, usually before repainting or a sale.
A vetted tradie soft washes timber: a low-pressure biocide and detergent application and a gentle rinse, which cleans without driving water behind boards or lifting old paint. That matters because paint applied before about 1970 may contain lead, so there is no high pressure and no dry sanding; where paint is flaking, the tradie says so and a painter with lead-safe methods takes over. Slate and terracotta get a treatment rather than scrubbing, applied from an elevated platform or with fall protection under the WHS Regulation. Sandstone is cleaned at low pressure. Run-off is directed to lawn and kept out of stormwater, as NSW pollution law requires, and pre-1990 asbestos cement is left alone.
Post the job with the house materials, roof type, storeys and whether it is a heritage item or in one of the conservation areas, and attach photos. Vetted, independent tradies who already wash houses in Wahroonga get in touch and give you a written quote. It should name a soft-wash method for timber and render, how the roof and sandstone will be treated, gutter clearing, access equipment and wash water handling. Homeowners are not charged and need not accept a quote. If you are preparing to repaint or sell, say so, because the sequence of wash, repairs and paint matters.
Exterior cleaning services you can post
Frequently asked questions
No. The pressure is low and the cleaning solution does the work, so sound paint is unaffected. Paint that is already flaking will show more after cleaning, which is useful to know before a painter quotes.
On pre-1970 houses, yes, which is why high pressure and dry sanding are avoided. Soft washing does not disturb intact paint, and the tradie keeps run-off off garden beds where children play and out of stormwater.
Cleaning is not an alteration, so normally no. Changing colours, roofing or external details is different; check with Ku-ring-gai Council, or Hornsby Shire if your property is on that side.
With a water-fed pole or soft-wash lance from the ground, or an elevated platform where the garden allows. Ladders against shingles are avoided.
