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4100 Skylark Lane - re: Installation of Norandex Sterling Vinyl Siding U tJ -it NORANDEX BUILDING MATERIALS DISTRIBUTION, INC. 2360 W. County Road C, Roseville, MN 55113 Re: Norandex Sterling Vinyl Siding To Whom It May Concern, This letter is in regards to the installation on Norandex Sterling Vinyl Siding. It is our opinion that proper installation of inside corners, using 1-channel, DOES NOT require the use of a caulking. Vinyl siding is not a "water tight" cladding option and requires the use of a house wrap to manage proper water drainage on the wall. Installation instructions published by VSI (Vinyl Siding Institute) and Norandex do not require the use of caulking in this method. Sincerely, Aire4 76-cletelaIr Mitch Turgeon Norandex Building Materials Distribution Area Sales Leader 612-308-2057