Chemicals that Cause PVC Drain Pipes to Melt or Soften

Same-day drain cleaning in Oxnard, CA today by your friendly, neighborhood plumbers.One of the most common methods that homeowners use to clean drainpipes is pouring chemicals or very hot water down the drain. However, it is important to know that PVC pipes melt at 176 degrees F. Therefore, avoid cleaning your PVC drainpipes with hot water because it may cause the pipes to melt or soften. At Oxnard Plumbing and Rooter Pros, we know the safest way to clean all types of drainpipes including PVC, steel, and plastic among others. In addition, we provide quality drain cleaning services to residents of and surrounding counties at some of the best rates in the industry.


Oxidizers, acids, and caustics are examples of drain cleaners that can cause PVC pipes to melt or become soft. Sulfuric acid and hydrochloric acid are the active ingredients of acid cleaners. Oxidizers normally have sodium hypochlorite while acidic drain cleaners usually contain sodium hydroxide or lye.


Chemical reactions involving hydrochloric acid, sulfuric acid, and sodium hydroxide can generate significant amounts of heat. For example, reactions involving lye can generate heat that can reach boiling points. Chemicals contained in drain cleaners can be corrosive, but what really causes PVC pipes to melt or soften is the heat produced by the chemical reactions.

Most people worsen the problem by using more than one product to clean their drainpipes. Hydrochloric acid and sulfuric acid generate heat when mixed with water. Our trained experts know how to safely mix chemical cleaners and dilute them to minimize their effects on drainpipes.


Chemicals in chlorine bleach or sodium hypochlorite do not cause PVC pipes to soften or melt. This means that oxidizers and caustic soda can be used as drain cleaners without damaging your drainpipes. However, oxidizers can react with materials blocking your drainpipes when they come in contact. Enzymatic drain cleaners contain living organisms that can eat up all the materials blocking your drainpipe.

Oxnard Plumbing and Rooter Pros has been providing drain cleaning services to residents of Oxnard for many years. Visit our facilities today to learn more about our wide range of drain cleaners.

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