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DocuSign Envelope ID:070B6BC7-CDE2-4AO8-BE62-07FA6BFDO53B <br /> 9/06/2020 <br /> Addendum #1 <br /> E. All parge coat to fully cure prior to application of primer and installation of the sheet <br /> waterproofing system. Provide protection during curing to prevent shrinkage cracking of the <br /> parge coat. <br /> 3.2 SHEET WATERPROOFING INSTALLATION <br /> A. Apply surface primer using roller type and the coverage rate recommended by the manufacturer. <br /> Allow primer to dry until it is tack-free unless otherwise required by the manufacturer.Re-prime <br /> areas that become contaminated with dust or other debris. Do not apply primer directly to water- <br /> proofing sheet membrane. <br /> B. Apply detailing tapes,liquid membrane,mastics,and sealants at transitions between vertical wall <br /> and top of footing, inside and outside corners, footing steps,penetrations through the wall, and <br /> at transitions to work not in scope in accordance with the design details and manufacturer's rec- <br /> ommendations. <br /> C. Install self-adhered waterproofing membrane on vertical surfaces. Overlap all seams a minimum <br /> of 2.5". Roll all membrane seams with a hand roller. Sheets should be oriented with vertical <br /> joints. If more than one course of membrane is required,the upper layer must overlap the lower <br /> by a minimum of 2.5". Extend the waterproofing onto the top of the footing enough to cover the <br /> transition strip by a minimum of 2". Apply mastic to the joints within 12"of a transition/change <br /> in direction.Install target patches and additional sealant/mastic at penetrations through the mem- <br /> brane. <br /> D. Terminate the top of the membrane approximately 1"-2"below the planned new grade level, to <br /> ensure that the waterproofing and top edge of the protection board will be covered and will not <br /> be exposed to UV or general landscaping activities. Secure the top of the membrane with a ter- <br /> mination bar fastened at a maximum of 8" o.c. Apply detailing sealant/mastic along the top of <br /> the termination bar and covering fasteners as required by the manufacturer before covering. <br /> E. Allow for the installed membrane to be inspected prior to covering. Make repairs to tears, cuts, <br /> and inadequately lapped seams. Fishmouths must be slit and repaired with a patch extending a <br /> minimum of 6"in all directions.Edges of the patch must be sealed with the manufacturer's liquid <br /> membrane. <br /> F. Place rigid protection board over the newly installed waterproofing membrane and adhere with <br /> adhesive or detail tape. Fit insulation neatly without large voids between the insulation and mem- <br /> brane or gaps between insulation boards. Boards shall be neatly cut at corners and transitions to <br /> prevent voids/gaps and to provide proper fit. <br /> G. Where the top of the waterproofing membrane follows a changing grade, the waterproofing and <br /> protection board should be stepped down to remain below grade. <br /> H. Place backfill as soon as practical.Use care during backfill to avoid damage to the protection board <br /> and waterproofing system components.Backfill directly adjacent to the waterproofing may need to <br /> be performed using hand tools to prevent damage to the new installation.New grade may be mod- <br /> ified as part of other project modifications and to slope away from the wall.Coordinate with grading <br /> plans to confirm waterproofing system heights prior to installation. <br /> 07 1300 BELOW GRADE WATERPROOFING Page 5 of 6 <br />