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Frequently Asked Pressure Washing Questions - Answered By T&P Cleaning Exterior Cleaning Services


What Type Of Contamination is Growing on My Roof?

When your roof is infested with algae, mildew, or bacteria it can look as if it’s covered in dirt. Contaminants like algae destroy and decompose surfaces once they’ve become attached to a surface and when they continue to grow, these microorganisms begin attacking your property. Algae is known as Gloeocapsa magma and they feed on the limestone granules embedded in your roof’s shingles. Roofs that are shaded are susceptible to algae due to limited exposure to sunlight, and when algae begin to flourish; moss and mildew often follow. Our soft washing technique is the perfect solution to keep the roof of your home in Sammamish, Issaquah, Redmond, and the greater eastside safe.

How Does The Soft Wash Process Work?

Our pressure washing technicians will complete a full inspection to assess the overall condition of your roof. The initial coat of cleaner is applied to the dirtiest area of the roof and left for 10-15 minutes. The second coat is a full application to every area where contamination is present. This coat gets rid of all bacteria on the roof and revives the roof of its natural appearance and condition. Our expert soft washing technicians are fully trained to identify the earliest signs of algae development, so all areas of the roof are treated no matter what stage of growth.

Is Soft Washing Safe And Will It Work On My Roof?

Our soft wash system is effective and has been approved by shingles manufacturers including ARMA, the Asphalt Roofing Manufacturers Association. Our process is recommended by insurance companies due to its ability to safely clean and sanitize while maintaining the integrity of the roof. We use a solution specifically designed to kill the bacteria growing on the roof to extend it's life.

How Often Should I Get My Windows Cleaned?

Generally we suggest that you have your windows cleaned at least once every 6 months. While your windows might not look dirty, the main threat is the corrosive impact of salt and other contaminants. While they typically won’t do much to your windows themselves, it can cause a great deal of damage to your frames, sills, and molding, as well as any moving parts like your hinges and locks. A great deal of damaging buildup can occur in just a few months, so it’s important to stay on top of it.

How Often Should I Get My Driveway Cleaned?

To keep your driveway looking its best, we advise getting it washed or cleaned at least once a year. If it's been a year or longer since you've had your driveway cleaned, give us a call at 360-477-1254 to schedule your appointment today!

Will I Be Able To Notice The Difference Of My Roof Right Away?

Our soft wash treatment is sprayed onto the roof and has similar effects to a weed control agent. The moss immediately dies, but then turns into little balls of white cotton. These balls naturally release themselves from the roof over time, and naturally fall. This typically takes about a month in our climate. The stains on your roof are instantly removed and evidence of a clean roof is almost immediate.

Is The Treatment Long Lasting?

Our treatment not only kills the moss on your roof but also destroys the algae and bacteria that are allowing the moss to flourish. When there is no food source for the moss, it takes longer for it to return. Ask us about a maintenance plan for your home.

Is Soft Washing Harmful For My Kids, Pets Or Plants?

The soft wash process includes a mixture of bleach and water which isn't harmful to animals and children due to the low amount of bleach used. Our technicians are careful when it comes to safeguarding the environment and inspect your property to note any greenery or areas that may need protection before soft washing.

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Contact T & P Cleaning

If you are looking for more answers to your pressure washing questions in Sammamish, ask us today with a phone call to 360-477-1254 or complete our online request form.