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Homeowner Forum / Construction / March 2006Does gypcrete rot wood?
Hi All, I ordered some 2x4s the other day to use as sleepers for a hydronic heat/gypcrete/bamboo floor system in our new house. I told the salesman what I was going to use the 2x4s for and he asked if I wanted treated ones. I asked why and he said that the lime in the gypcrete would eat the untreated wood. I have not heard of this before. (I am not a contractor) The subfloor sheathing and bottom plates are not treated. What are your opinions on this? Thank you, Jim I am not aware of any problems between lime and wood. Treated wood is used for wet, mold, mildew, rot. ______________________________ Keep the whole world singing . . . . DanG (remove the sevens) dgriff237@7cox.net > Hi All, > I ordered some 2x4s the other day to use as sleepers for a [quoted text clipped - 7 lines] > Thank you, > Jim >I am not aware of any problems between lime and wood. Treated wood is used >for wet, mold, mildew, rot. [quoted text clipped - 13 lines] >> Thank you, >> Jim In the UK treated timber is the norm,but our climate is should we say "damp". From the gypcrete website it appears that using untreated timber is not detremental----ask your gypcrete supplier for confirmation http://www.maxxon.com/product_detail.asp?ID=1 >>I am not aware of any problems between lime and wood. Treated wood is >>used for wet, mold, mildew, rot. [quoted text clipped - 19 lines] > detremental----ask your gypcrete supplier for confirmation > http://www.maxxon.com/product_detail.asp?ID=1 Thank you, DanG and Budweiser - I'll give the supplier a call tomorrow. Jim > I am not aware of any problems between lime and wood. Treated > wood is used for wet, mold, mildew, rot. > ______________________________ > Keep the whole world singing . . . . > DanG (remove the sevens) > dgriff237@7cox.net ...and ground or concrete contact. >>Hi All, >>I ordered some 2x4s the other day to use as sleepers for a [quoted text clipped - 7 lines] >>Thank you, >>Jim  SignatureRobert Allison Rimshot, Inc. Georgetown, TX The treatment in treated wood is an insecticide. It does not prevent wet rot or dry rot, it merely repels insects. It will have no effect on lime which shouldn't do any significant damage to the wood by itself. > > I am not aware of any problems between lime and wood. Treated > > wood is used for wet, mold, mildew, rot. [quoted text clipped - 16 lines] > >>Thank you, > >>Jim > The treatment in treated wood is an insecticide. It does not prevent > wet rot or dry rot, it merely repels insects. It will have no effect on > lime which shouldn't do any significant damage to the wood by itself. That is totally incorrect. From Wikipedia: "Timber treatment in forestry describes the intensive treatment of timber with chemical agents to increase its durability and ability to be used in an otherwise inappropriate situation like inground use. Timber or lumber may be treated with a preservative that protects it from being destroyed by insects, fungus or exposure to moisture." And from the forestry products site: "ACQ Pressure-Treated Lumber – FAQ Answers to common questions about pressure-treated lumber. ACQ Pressure-Treated Lumber– A Wood Preservation Lumber’s greatest enemy is biological attack — destruction by termites, fungi, marine borers and bacteria. After more than a half century of scientific tests and practical experience with various treating chemicals, there is a variety of weapons that have been formulated to protect wood against insects, rot and decay." From my experience with construction, I know that any wood in contact with concrete or concrete type products must be treated. It is code here (All lumber in contact with ground or concrete must be treated). You would be advised to gain a greater understanding of the uses of treated wood. SignatureRobert Allison Rimshot, Inc. Georgetown, TX >> The treatment in treated wood is an insecticide. It does not prevent wet >> rot or dry rot, it merely repels insects. It will have no effect on lime [quoted text clipped - 27 lines] > lumber in contact with ground or concrete must be treated). You would be > advised to gain a greater understanding of the uses of treated wood. Thanks to everyone for their responses. I talked with my gypcrete supplier and they don't require the wood to be treated. However, I found this information from Maxxon: http://www.gypcrete.net/documents/2000%2Dsf%2Edoc which says that they have a primer that goes down before the gypcrete. I'll keep searching for info.... Jim |
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