Never aim your pressure washer up the roof as it can push water under the shingles.
How to power wash a torch down roof.
Always safety first please.
Combine approximately 1 pound 455 kilograms of a non phosphate concentrated cleaner for every 4 gallons 15 4 liters of washing water.
Torch down techniques and details.
Spraying water under your shingles can both tear off the shingles and force water under them and into your home.
Pressure cleaning a roof when done properly using rotary cleaning equipment is safe cost effective and will not force water through or under tiles as the jet angle is controlled and always points away and down the roof rather than into or all over the place which is the case when blasting with a lance or wand is used.
This little video it s about torch down technique hopefully you like it and becomes helpful if you run across a job like this.
Its been about 10 years and still doing alright on original coat.
It is applied almost like paint so all you would need to is power wash your existing flat roof and apply another coat.
This environmentally friendly method has become increasingly popular as no chemicals are required.
Always stand on a dry area of the roof as wet shingles can be very slippery.
4 mix the cleaning solution and fill the pressure washer s detergent dispenser.
Aim the pressure washer down the roof toward the gutters and keep the tip of the wand at least a foot away from the surface when starting.
I took mother nature half of a century to build the green moss on the tile roof and it took me 4 hours to get rid of it sad.
The coating protects the roof from elements specially the sun which degrades roofing material so that is how it extends the life of roof.
Constant maintenance is not required and moreover both moisture and heat effects can be prevented well for long.
I liked the green look but.
You may want to use a pressure washer to clean your flat roof.
Autumn is always a good time to clean your flat roof as this is the season when the leaves fall from the trees.
Modified bitumen can be used for creating the most durable roofing called torch down roofing.
Low roofs can be now easily lifted up to a certain height by means of the bitumen coats.