Decks around Whatawhata can collect leaves, dirt and organic buildup, particularly where outdoor areas are shaded by trees or receive limited sunlight.
Damp boards may develop moss, algae and dark staining, making the surface look neglected or slippery after rain. Debris can also collect between boards, around stairs and beneath railings.
Timber, composite and coated decks respond differently to cleaning, which is why the surface should be checked before the work begins.
We clean timber, composite, painted and sealed decks using a method suited to the material, coating and condition of the surface.
Careful cleaning for painted, stained and uncoated timber decks. We adjust the pressure to suit the condition.
We remove dirt, algae and organic buildup using a method suited to the composite material.
Painted, stained and sealed decks are assessed first so the cleaning method does not unnecessarily damage the existing coating.
We check the material, surface condition and existing coating before choosing the cleaning method.
Moss, algae, mildew and lichen may be treated first to help loosen the buildup.
We adjust the pressure to suit timber, composite or coated decks and clean the boards, gaps and edges carefully.
Loose dirt, growth and debris are rinsed away from the deck and surrounding areas.
We inspect the finished surface and point out any visible soft timber, rot or damage.
| Deck size | Calculation | Before GST | Including GST |
|---|---|---|---|
| Minimum | N/A | $190 | $218.50 |
| 90 sqm | 90 × $3 | $270 | $310.50 |
| 120 sqm | 120 × $3 | $360 | $414 |
| 150 sqm | 150 × $3 | $450 | $517.50 |
| 200 sqm | 200 × $3 | $600 | $690 |
| 250 sqm | 250 × $3 | $750 | $862.50 |
| 300 sqm | 300 × $3 | $900 | $1,035 |
| 350 sqm | 350 × $3 | $1,050 | $1,207.50 |
| 400 sqm | 400 × $3 | $1,200 | $1,380 |
| 500 sqm | 500 × $3 | $1,500 | $1,725 |
Decks smaller than approximately 64 sqm use the minimum charge of $190 plus GST instead of the per-square-metre rate.
Pricing note: GST at 15% is included in the “Including GST” column. All residential quotes include the full GST amount.
Every deck is different. We check the material, coating and condition first, then choose a cleaning method suited to the surface.
Timber, composite and coated decks are cleaned differently. We adjust the approach to suit the material and condition.
We use appropriate pressure and treatment to remove moss, algae and dirt without applying unnecessary force.
Deck cleaning is generally priced at $3 per sqm plus GST, with a minimum standalone charge of $190 plus GST.
View real before-and-after results from deck and exterior-cleaning projects completed by Sun SoftWash.
Get answers to common questions about our deck cleaning service in Whatawhata
Sealed decks can be cleaned. We adjust pressure and technique to protect the sealant. If the sealant is peeling, failing, or incompatible with our cleaning method, we'll identify this.
Soft spots and rot are identified during cleaning. Structural repair (timber replacement) is separate from cleaning and quoted independently.
Annually or every 18 months depending on tree coverage and shade. Heavily shaded decks accumulate organic growth faster.
Yes. Composite is cleaned with appropriate pressure and technique matched to the material.
Surface dries within a few hours in normal conditions. Avoid using the deck for 2–3 hours after cleaning.
Rain and wind may require rescheduling. We reschedule at no extra cost and keep you informed of new timing.
Send us clear photos of your deck, the approximate size and any visible moss, algae, staining or damaged areas.
Straightforward jobs may be quoted from photos. Larger, multi-level or heavily weathered decks may require a site visit.
