WPA Code of Practice – Industrial Wood Preservation

WPA Code of Practice – Industrial Wood Preservation
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This WPA Code of Practice provides detailed guidance on industrial wood preservation for specifiers, wood treaters and those involved with using treated wood.
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Installing Treated Fence Posts
Installing Preservative Treated Timber Fence Posts
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The information in this Guidance Note applies to both ROUND and SQUARE sawn softwood posts, pre-treated with a preservative for fencing applications.
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WPA Benchmark Scheme for Preservative Treated Wood
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This document is a summary of the WPA Benchmark Quality Approval Scheme for preservative pre-treated wood.
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Biocidal Products Regulation
Brexit and the EU Biocidal Products Regulation (BPR)
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Biocidal Products Regulation (BPR) applies to a very wide range of chemical products used by industry, professionals and the general public throughout the EU. The common factor is that all incorporate biocides in their finished form. Wood preservatives are just one group of products within scope.
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Guidance for wood treatment
Guidance for Wood Treaters in the NTR Region
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Guidance for Wood Treaters in the NTR Region. Treatment Specifications used in the UK Market
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Timber frame: standard details for thermal performance enhanced design – Volume 2: Rigid foam insulation
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This publication explains what cold bridging is, how to calculate the PSI-value and how to demonstrate compliance when using the standard details with rigid foam insulation in the external walls.
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use class 4
Use Class 4 treated timber: specifying, buying and installing
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Preservative treatment provides wood with added durability (against decay and insect attack). But, it’s a mistake to assume that all treated wood is the same. The level of preservative protection required depends on where it is to be used.
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fire protection terms
Understanding Fire Protection Terms – Classification without further testing (CWFT)
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In some cases, it is possible to classify untreated wood-based products without further testing as long as these products meet the requirements set out in the relevant harmonised technical specification.
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Flame Retardant Treatments
Flame Retardant Treatments for Timber – An Overview
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Flame Retardant (FR) chemical treatments for timber work by reducing its ignitability, slowing down the surface spread of flame and, as a result, reducing the heat released. This allows more time for escape in a fire situation.
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Laminated veneer lumber LVL
Laminated veneer lumber (LVL) bulletin
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The European LVL industry (Metsä Wood, Pollmeier Massivholz GmbH & Co. KG, STEICO SE and Stora Enso) has decided to launch LVL strength classes. This bulletin introduces the classes along with other product and design provisions not yet covered in the respective standards.
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