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NOTE: NO FURTHER DISCOUNT FOR THIS PRINT PRODUCT-- OVERSTOCK SALE -- Significantly reduced list price Wood preservatives are generally grouped into two categories: preservatives used for in-place field (remedial)treatment and preservatives used for pressure treatments.A limitation of in-place treatments is that they cannot beforced deeply into the wood under pressure. However, theycan be applied into the center of large wooden membersvia treatment holes. These preservatives may be availableas liquids, rods, or pastes. Pressure-treated wood has muchdeeper and more uniform preservative penetration thanwood treated with other methods. The type of pressuretreated wood is often dependent on the requirements of thespecific application. To guide selection of pressure-treatedwood, the American Wood Protection Association developedUse Category System standards. Other preservative characteristics, such as color, odor, and surface oiliness may alsobe relevant. Guidelines for selection and application of fieldtreatments and for selection and specification of pressure-treated wood are provided in this document. Related Products: Nondestructive Evaluation of Wood is available here: https: //bookstore.gpo.gov/products/sku/001-001-00704-8 New Exterior Additions to Historic Buildings: Preservation Concerns is available here: https: //bookstore.gpo.gov/products/sku/024-005-01280-0 Guide for In-Place Treatment of Wood in Historic Covered and Modern Bridges is available here: https: //bookstore.gpo.gov/products/sku/001-001-00695-5 Preserving Historic Wood Porches is available here: https: //bookstore.gpo.gov/products/sku/024-005-01240-1 Preservation Briefs: Recognizing and Resolving Common Preservation Problems, 1-14 is available here: https: //bookstore.gpo.gov/products/sku/024-005-01026-2 Preservation Briefs: 15-23 (2007) is avaiable here: https: //bookstore.gpo.gov/products/sku/024-005-01256-7 Preservation Briefs 24-34: Recognizing and Resolving Common Preservation and Repair Problems Prior to Working on Historic Buildings is available here: https: //bookstore.gpo.gov/products/sku/024-005-01147-1 Preservation Briefs 35-42: Recognizing and Resolving Common Preservation and Repair Problems Prior to Working on Historic Buildings is available here: https: //bookstore.gpo.gov/products/sku/024-005-01219-2 Renovation & Historic Preservation resources collection can be found here: https: //bookstore.gpo.gov/catalog/science-technology/construction-archit"
This document provides guidance on wood preservation options in the context of historic preservation. Preserving wooden building materials is critical to historic preservationpractitioners. Biodeterioration can be minimized through design, construction practices, maintenance, and, if necessary, by use of wood preservatives. Moisture is the primary cause of biodeterioration, and if exposure to moisture cannot be prevented, the application of preservatives or use of pressure-treated wood may be warranted. The Secretary of Interior's Standards for the Treatment of Historic Properties emphasize retaining the historic character of a property, including distinctive materials, features, and spatial relationships. Existing conditions should be carefully evaluated to determine the appropriate level of intervention. Wood preservatives are generally grouped into two categories: preservatives used for in-place field (remedial) treatment and preservatives used for pressure treatments.A limitation of in-place treatments is that they cannot be forced deeply into the wood under pressure. However, they can be applied into the center of large wooden members via treatment holes. These preservatives may be availableas liquids, rods, or pastes. Pressure-treated wood has much deeper and more uniform preservative penetration than wood treated with other methods. The type of pressure-treated wood is often dependent on the requirements of thespecific application. To guide selection of pressure-treated wood, the American Wood Protection Association developed use Category System standards. Other preservative characteristics, such as color, odor, and surface oiliness may alsobe relevant. Guidelines for selection and application of field treatments and for selection and specification of pressure-treated wood are provided in this document.
The purpose of this publication is to discuss the application of the results of numerous experiments and observations of the pressure treatment of wood and to present general information relating to the subject. Such information is of value to engineers, treating-plant operators, inspectors, and others interested in the preparation of specifications and in the application of pressure-treating processes.