FAQs

Pressure washing uses high-pressure water for hard surfaces like concrete and driveways. Soft washing uses low pressure with specialized solutions for delicate surfaces like roofs and siding.

Most homes in New Hampshire benefit from annual pressure washing. Coastal properties near Portsmouth may need cleaning every 8-10 months due to salt air exposure.

No, soft washing is specifically designed to be safe for asphalt shingles. The low-pressure technique with biodegradable solutions removes algae and moss without causing shingle damage or granule loss.

Black streaks are caused by algae growth called Gloeocapsa Magma. This algae feeds on limestone in shingles and thrives in New Hampshire's humid climate, especially on north-facing roof sections.

Most residential house washing takes 3-5 hours depending on home size and condition. This includes pre-treatment, washing, and final rinse for both siding and windows if included.

Yes, hot water pressure washing with appropriate degreasers effectively removes most oil stains from driveways and concrete surfaces. Older, set-in stains may require specialized treatment solutions.

Late spring through early fall offers ideal conditions in New Hampshire. Avoid winter months when temperatures drop below freezing, as water can freeze on surfaces and equipment.

Yes, please remove or cover outdoor furniture, decorations, and plants near cleaning areas. This protects your belongings and allows complete access to all surfaces requiring cleaning.

Cost depends on square footage, surface condition, accessibility, and service type. Multi-story homes, heavily stained surfaces, and additional services like window cleaning increase the overall investment.

Soft washing results typically last 4-6 times longer than pressure washing alone. Roof treatments can maintain clean appearance for 2-4 years, while house siding stays clean 12-18 months.

Most NH homeowners benefit from professional pressure washing once per year, typically in spring after winter salt and debris accumulation, or in fall before the season closes. Properties with heavy tree coverage or north-facing surfaces may need cleaning more frequently due to accelerated algae and moss growth.

When done by a trained professional using the correct pressure settings and solutions, pressure washing is completely safe. We assess every surface before cleaning and adjust our equipment accordingly. Certain surfaces — like asphalt shingles or older wood — are better suited to our soft washing service, which uses low pressure and specialized solutions. We'll always recommend the right approach for your specific surfaces.

Pressure washing uses high-pressure water to physically remove surface contaminants — ideal for concrete, brick, and stone. Soft washing uses low-pressure water combined with professional-grade cleaning solutions to kill and remove biological growth like mold, algae, and mildew — better suited for roofing, painted siding, and more delicate surfaces. Soft Spray Solutions offers both. Learn more on our Soft Washing page.

Not necessarily. As long as we have access to the areas being cleaned and a water source, many jobs can be completed while you're away. We'll discuss access and any specific instructions during your estimate appointment.

A typical residential driveway takes 1–2 hours. A full house exterior can take 3–5 hours depending on size and level of soiling. We'll give you a time estimate when we provide your free quote.

Yes. We serve communities throughout Rockingham County and the Seacoast NH region, including Rye, Portsmouth, Epping, Hampstead, Plaistow, Stratham, Seabrook, Hampton Falls, North Hampton, Greenland, Danville, Newton, East Kingston, Fremont, Brentwood, Newfields, New Castle, South Hampton, and Newburyport, MA.

Yes — soft washing is actually the manufacturer-recommended cleaning method for asphalt shingle roofs. The Asphalt Roofing Manufacturers Association (ARMA) explicitly recommends low-pressure washing with appropriate cleaning solutions over high-pressure methods, which strip protective granules and shorten roof life. Soft washing cleans effectively while protecting your investment.

Soft washing results typically last 2-4 times longer than pressure washing alone, because the cleaning solutions kill the biological organisms at their source rather than just removing surface staining. Most Kingston, NH homeowners find their roofs and siding stay clean for 2-3 years after a professional soft wash treatment.

We take precautions to protect your landscaping during every soft washing job. This includes pre-wetting surrounding plants before application, using carefully controlled solution concentrations, and rinsing landscaping thoroughly after cleaning. We'll discuss any specific concerns about your plantings during the estimate walkthrough.

Yes. Those black streaks are almost always caused by Gloeocapsa magma, a hardy algae that feeds on the limestone filler in asphalt shingles. Soft washing's cleaning solutions kill this organism completely, and the staining rinses away. Results are typically dramatic — roofs can look years younger after a single soft wash treatment.

A garden hose can rinse loose debris, but it cannot penetrate or kill biological growth embedded in your roof, siding, or wood surfaces. Professional soft washing uses commercial-grade cleaning solutions formulated specifically for exterior biological staining — the same organisms that cause damage over time if left untreated. It's the difference between rinsing a wound and actually treating it.

Yes. We provide soft washing for commercial building exteriors, storefronts, and multi-unit properties throughout the Seacoast NH region. Visit our Commercial page or call us directly to discuss your project.

Most Kingston, NH homeowners benefit from professional deck cleaning once per year, ideally in spring before outdoor season begins. Decks with heavy tree coverage, north-facing exposure, or pool-adjacent locations may benefit from cleaning twice per year — spring and fall — due to accelerated biological growth. Annual cleaning is also the recommended maintenance interval to keep most deck stain and sealant warranties valid.

It can — if done incorrectly. High-pressure washing above manufacturer-recommended PSI levels can damage composite deck surfaces, leaving visible surface marks or driving moisture into the board structure. We never use high pressure on composite decking. We use soft wash methods with appropriate cleaning solutions, which clean composite boards thoroughly and safely within manufacturer guidelines.

Yes. We use controlled pressure levels and appropriate nozzle attachments when cleaning paver surfaces to clean effectively without blasting joint sand out of the gaps. We discuss any specific concerns about your paver installation during the estimate walkthrough, and we'll flag any areas where joint sand is already compromised before cleaning begins.

Often, yes — dramatically so. The grey, weathered appearance of aged wood decking is frequently caused by a combination of surface dirt, biological staining, and UV graying of the wood surface. Professional cleaning removes the biological layer and embedded contamination, revealing the natural wood tone underneath. Results vary depending on the wood species and the depth of UV weathering, but most homeowners are genuinely surprised by how much color comes back. If the deck still looks dull after cleaning, that's the ideal time for a stain or sealant application.

It helps, but it's not always necessary. We can work around furniture in most cases, though moving items off the deck surface gives us full access and the best possible result. We'll discuss the setup during your estimate so you know exactly what to expect on the day of service.

A standard residential deck takes 1-3 hours depending on size and condition. A combined deck and patio job typically takes 2-4 hours. We provide a time estimate along with your quote so you can plan your day accordingly.

Yes. We clean commercial outdoor spaces including restaurant patios, retail entrance areas, and multi-unit property common areas throughout the Seacoast NH region. Visit our Commercial page or call us directly to discuss your project.

The most obvious signs are dark streaks running down your shingles (black algae), green or fuzzy patches (moss), and crusty grey-green growth that appears to be bonded to the surface (lichen). Less obvious signs include a general darkening or discoloration of the roof surface, especially on north-facing sections, and increased energy bills that may indicate heat absorption from a heavily stained roof. If you're unsure, call us — we'll come out and take a look at no charge.

Yes — it is specifically designed to be. Soft washing is the cleaning method recommended by the Asphalt Roofing Manufacturers Association (ARMA) and by most major roofing material manufacturers. High-pressure washing is not. We never use high pressure on any roofing surface. Our low-pressure application protects your shingles, preserves granule coverage, and keeps your manufacturer warranty intact.

We take specific precautions on every roof treatment job to protect your gutters, landscaping, and the surfaces below the work area. This includes pre-wetting plants before and after treatment, using controlled solution concentrations, and flushing gutters and downspouts after the job is complete. We'll discuss any specific concerns about your property during the estimate walkthrough.

Most Kingston, NH homeowners see results lasting 2-4 years after a professional soft wash roof treatment. This varies based on the amount of tree coverage and shade over the roof, proximity to moisture sources, and the specific organisms treated. We can discuss expected maintenance intervals for your specific roof during your free estimate.

We perform a thorough inspection before every roof treatment. If we identify existing damage — cracked shingles, compromised flashing, areas of missing granules — we'll document it and bring it to your attention before any cleaning begins. We won't apply treatment over areas where it could cause additional harm, and we'll recommend you address any structural issues with a roofing contractor first.

Yes. We provide roof treatment services for commercial buildings, multi-unit properties, and flat roof systems throughout the Seacoast, NH region. Visit our Commercial page or call us to discuss your commercial roof treatment needs.

Roof treatment cleans and protects a roof that is structurally sound but affected by biological growth and staining. It extends the life of your existing roof and maintains its warranted condition. Roof replacement is a structural project required when roofing materials have degraded beyond the point where cleaning or treatment can restore them. Regular professional treatment is one of the most effective ways to delay or avoid early replacement.

Most communities benefit from quarterly cleaning of high-traffic areas like entrances and mailbox zones, with full property cleaning once or twice per year. Frequency depends on tree cover, weather exposure, and foot traffic volume.

You provide access to water sources, gate codes or lockbox combinations, and a map showing which areas to prioritize. We handle equipment, cleaning agents, and coordination with any onsite staff.

Porous materials like exposed aggregate or unsealed concrete absorb moisture and hold organic matter, which allows algae and mildew to return faster. Sealed or smooth surfaces shed water and stay cleaner between treatments.

Rain does not undo the cleaning once surfaces are dry, which typically takes two to four hours depending on temperature and airflow. We check the forecast and avoid scheduling before heavy rain when possible.

We work around parked cars and return to clean missed sections during a second pass if needed. For best results, you can notify residents in advance and request temporary relocation of vehicles from specific zones.

Most storefront cleaning happens early morning before opening or late evening after closing to avoid interfering with foot traffic. We adjust timing based on your hours and peak customer periods.

We use lower pressure near door thresholds and window seals, angle spray away from gaps, and place absorbent mats at entryways. Proper technique prevents water intrusion while still removing dirt effectively.

Gum bonds to concrete and asphalt when it dries, and pressure alone often smears it rather than removing it. We apply heat first to soften the gum, then lift it with a scraper and flush residue with a focused stream.

A single storefront with standard sidewalk frontage usually takes one to two hours depending on the level of soiling and surface complexity. Multi-unit retail strips require longer windows and may be completed over several visits.

We avoid unsealed wood, delicate signage with vinyl graphics, and aging mortar joints that are already crumbling. You point out any concerns during the walkthrough, and we adjust methods or recommend alternative cleaning approaches.

The streaks are colonies of algae that feed on moisture and organic material. They grow fastest on north-facing slopes and shaded areas where roofs stay damp longer after rain.

We use soft wash techniques with algaecide and surfactant solutions applied at low pressure, avoiding the high-pressure spray that can tear membranes, dislodge granules, or force water under seams. The solution does the work instead of mechanical force.

Spring and fall offer moderate temperatures that help cleaning agents work effectively without evaporating too quickly. We avoid cleaning during freezing conditions or extreme heat that can stress roofing materials.

A typical commercial building with a roof area between ten and twenty thousand square feet takes four to eight hours depending on access points, surface complexity, and the extent of buildup. Multi-story buildings may require staged work over several days.

High pressure strips protective granules from shingles, damages rubber membranes, and forces water under flashings where it causes leaks. Soft washing preserves the roof while still removing growth and staining effectively.

We schedule work during off-hours, weekends, or low-traffic periods based on your needs. Larger properties are divided into sections so cleaning happens in phases without closing your entire facility.

You provide access to water hookups, identify any sensitive areas like electrical panels or vents, and notify staff about the cleaning schedule. We handle all equipment, cleaning agents, and containment measures.

Cold water alone does not break the bond between petroleum-based stains and concrete. Hot water at temperatures above 200 degrees liquefies the oil so it can be flushed away along with a degreasing agent.

High-traffic areas like entryways and loading zones benefit from quarterly cleaning, while full property washing is typically done once or twice per year. Frequency depends on weather exposure, foot traffic, and industry-specific soiling.

Aging mortar, soft wood, and painted surfaces with poor adhesion can be damaged by high pressure. We inspect surfaces beforehand and adjust methods to avoid causing harm while still achieving effective cleaning.

Soft washing uses low-pressure chemical application to kill and remove organic growth, while pressure washing relies on high-pressure water to physically blast away dirt. Soft washing is safer for painted and textured surfaces.

Soft washing kills algae and mold spores at the root, so results typically last one to two years depending on shade, moisture exposure, and organic debris accumulation. Pressure washing alone removes surface growth but does not prevent immediate regrowth.

We pre-wet plants and cover sensitive areas with tarps to prevent chemical contact. The cleaning solutions are diluted and rinsed thoroughly to minimize impact on surrounding vegetation.

Algae thrives in moisture and shade, so north-facing walls, areas under eaves, and buildings surrounded by trees develop growth faster. Buildings near bodies of water or in humid climates also see more frequent buildup.

We use low-pressure application and avoid angling spray upward into seams or behind trim. The solution is applied in a controlled manner that cleans the surface without creating the water intrusion risk associated with high-pressure washing.

We use water-fed poles that extend up to several stories, delivering purified water through brush heads that scrub and rinse glass without leaving mineral spots. Taller buildings may require lift equipment or rope access depending on structure and site conditions.

Purified water has minerals and impurities removed through filtration, so it dries without leaving the white spots that hard water causes. This allows windows to be rinsed and left to air dry with a streak-free finish.

Retail storefronts benefit from monthly or biweekly cleaning to maintain curb appeal, while office buildings are typically cleaned quarterly or seasonally. Frequency depends on location, exposure to dust and pollen, and visibility standards.

We move blinds and curtains aside carefully to access glass and return them to their original position after cleaning. You notify us in advance if any treatments are delicate or should not be touched.

Streaking usually results from dirty squeegee blades, improper drying technique, or mineral deposits in the rinse water. We replace blades regularly and use purified water systems to avoid these issues.