Pressure Washing in Seri Manjung

High-pressure washing damages most roof coverings — it strips granules from asphalt shingles, cracks and dislodges tiles, and can force water under the covering. Roof cleaning should be done by soft washing or manual moss removal plus a biocide treatment. If a company proposes blasting your roof at full pressure, choose someone else.

It is one of the cheapest kerb-appeal upgrades before selling or renting out a property. Estate agents consistently list exterior cleaning among the highest return-on-cost pre-sale jobs because it changes first impressions for a few hundred, not a few thousand. It will not fix structural issues, but it makes photos and viewings noticeably better.

Most pros charge either by the hour or by surface area. A single driveway or patio is typically a 1-3 hour job at the low end of a pro's minimum call-out, while a full house exterior wash costs several times more. Get the quote broken down by surface (driveway, walls, deck, roof) so you can drop items to fit your budget.

Safe at high pressure: concrete, block paving, natural stone (with care), brick in good condition, metal fences and gutter exteriors. Needs low pressure or soft washing: painted surfaces, render, timber decking, vinyl or fibre-cement siding, roofs, and old or repointed brickwork. Never pressure wash: single-glazed windows at close range, electrical fittings, or asbestos-containing materials.

A single driveway or small patio takes 1-3 hours. A full house exterior typically takes half a day to a full day depending on size, number of storeys, and how much pre-treatment the surfaces need. Add drying time of a few hours before you walk on sealed or treated surfaces.

Common products are sodium hypochlorite (bleach) solutions for organic growth, degreasers for oil, and biocides for moss and algae. Used properly they are rinsed off and diluted, but they can harm plants, pets, and ponds during application. Ask the pro how they protect garden beds and where the runoff drains — dirty water should not go into surface-water drains in many jurisdictions.

Expect roughly RM60-RM150 per hour for a crew with equipment, RM150-RM600 for a car porch and driveway, and RM500-RM2,500 for a full terrace-house or semi-D exterior. Klang Valley rates are the benchmark; other states run 20-30% lower.

Every 6-12 months for most homes. Year-round humidity plus daily wet-dry cycles grow black mould and algae on porch tiles and boundary walls quickly, and shaded north-facing surfaces may need attention every 6 months with an algaecide to hold results.