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Displaying Frequently Asked Questions i am soon to build in ellenbrook and am looking to get a quote to treat the pine roof timbers against the EHB. our house is a basic 4 by 2, we are building the (platinum) through blue print homes. We do not normally carry out treatment of pine timbers for EHB. We always recommend that you install pre-treated pine timbers in your roof. This is advised by the WA Department of Agriculture and Food, on their EHB website: www.ehb.wa.gov.au . According to this website: “EHB only attacks untreated, dry (seasoned) pine. Treated pine and other roofing materials are not at risk from EHB. The building advice from the Department of Housing and Works is not to use untreated pine for structural purposes in affected areas. You should seek advice from your builder about the most suitable option for your home, or contact the Department of Housing and Works Building Codes and Regulations Branch on (08) 9440 2349.” The Department of Consumer and Employment Protection has a webpage you can read for recommended treatment: http://www.docep.wa.gov.au/consumerprotection/ehb/pages/EHB_Treatments.html The DCEP state that: “Some pest treatment companies offer an additional boron spray treatment applied directly to pine framing and roof timbers as protection against EHB. The treatment consists of an initial treatment with mandatory yearly inspection. The service can coincide with termite spray treatment.” We have no confidence that borates or boron sprays will stop EHB from infesting seasoned pine timbers. We therefore recommend that you install pre-treated pine timbers rather than having untreated pine timbers sprayed with these applications after installation. Date Listed: 2010-01-25 Back

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