How to Stop Moss From Growing on Concrete

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In this article you will learn how to clean moss and help prolong the time that it takes to reapear

  • First if at all possible try removing any obstructions that can cause the loss of sun to shine on the concrete.then try scraping all the heavy build up with warm water in a light spraying motion, and a bristle brush to remove the moss

  • Some chemical solutions that can be used are laundry bleach and boiling water.You will want to use only a small amout of bleach as this can cause etching. The best thing to do is try it in an unconspicuous place thn move on to the other spots

  • Another method is to use a solution of 1 part sodium pentachlorophenate to 8 parts water by volume. It should be applied so that the moss or other growth is thoroughly saturated. If the surface is exposed to rain within 24 hours following the application, some of the solution will be lost and a further application may be necessary. About one week after the pentachlorophenate solution has been applied, all vegetable growth should have been killed and the residue can be removed by brushing. The surface will usually retain sufficient weed killer in inhibit further growth for some time

Tips & Warnings

  • For best results, the surface should be sealed after dirt and dead moss have been brushed off. There are a variety of paints or transparent sealers commercially available for this type of application. An effective sealer may consist of a mixture of 33% sodium silicate in water with the addition of 1% ammonium chloride as coagulator. This sealer allows growth to be washed off easily, but will not prevent its formation. Other sealers, such as 7 oz by weight of magnesium fluosilicate or zinc fluosilicate in 1 gal of water, are also helpful.

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