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H R D C CONSTRUCTION <br /> • 1001 E. 24TH STREET . <br /> .MINNEAPOLIS. MN 55404 <br /> PHONE: 16 1 21 874-01 00 <br /> 874.0748 - <br /> April 29, 1987 <br /> Proposal No. : 10930 <br /> JOB ADDRESS: City Off.i.ces <br /> Silver Lake Road <br /> -------------------------------------------------------------------- <br /> Upon inspection of the roofs above the City Hall Buildings, <br /> (approx. 37,500 sq. ft. ) , I found most of the pitch and gravel <br /> roofs have been repaired many times before. Some of the repairs <br /> have been done with asphalt base materials which is not compatible <br /> with pitch. There are many low areas which allow water to pond. <br /> There are two roof sections which appear to be in fairly decent <br /> shape as of yet. However, after seeing the rest of the roofs . <br /> I 'm sure it won 't be long before they would be in the same condition. <br /> My recommendations for a substantial roof, with out any extras to <br /> push the cost out of site are as follows : <br /> Remove perimeter metal . Power broom all loose gravel from roof <br /> areas , haul away. Build up low area 's on roof sections . Install <br /> 1 " expanded -polystrene insulation over field of roof sections. <br /> Install 45 Mil EPDM' ballasted single ply roof system over entire <br /> roof area, flash up parapet walls and around all protrusions. <br /> EPDM roof system to be- ballasted with washed river rock 3/4" to <br /> 12" at a rate of 10 lbs. per sq. ft. Reinstall existing metal . <br /> 15 Year Manufacturers Warranty on EPDM Roof System <br />