Public Services and Procurement Canada on behalf of the Department of Fisheries and Oceans –Northwest Atlantic Fisheries Centrehas a requirement for thereplacement of the roof of module G10 at White Hills, St. John's,NL. The Contractor must perform and complete the work within 20 weeks of award. Invited Firms: This ITT is only open to the pre-qualified firms who qualified under the Invitation to Qualify process that was posted publicly on CanadaBuys.Site Visit: No site visit has been scheduled. Before submitting a bid, it is recommended that bidders visit the site.Enquiries: All enquiries are to be submitted to the Contracting Authority using the Messages function in SAP Ariba. All enquiries should be received no less than seven calendar days prior to the closing date. General Information: The estimated cost of this procurement is between $100,001 to $500,000. Proposals must be submitted only via SAP Ariba by the date and time indicated. The RFP issuing office is: Atlantic Region Acquisitions. This office provides services in English. Proposals may be submitted in either official language of Canada.