2017-00271 - new house - Laserfiche WebLink

Home Browse Search

TBS. For smooth surface poured concrete walls, the proper thickness application will yieid ' a coverage rate not to exceed 25 square feet per gallon (sf/gal). For brick pattern (decorative) poured walls, the proper thickness application will yield a maximum coverage rate of 18 sf/gal. � The maximum coverage rate on block walls should not exceed 20 sf/gal. Coverage rates may be lower depending on the porosity of the block, parged block, or poured concrete walls. It is the contractor's responsibility to ensure that 40 cured mils are on the exterior of the vertical wall ' when the waterproofing is completed. 5. Careful attention must be taken during the application process to ensure a consistent, ' homogeneous membrane. For best results, apply TUFF-N-DRI Membrane using a two-coat technique utilizing a tack coat on an entire wall and a second coat to build up to the required wet mil thickness. A tack coat will reduce bubbling and pin holing caused by poured concrete ' walis curing and out-gassing. An applicator may choose to spray the TUFF-N-DRI Membrane in one coat. This type of application must be carefully completed to ensure no thin spots. A one-coat application will be more prone to bubbling and pin holing on poured concrete walls. � 6. Inspect the sprayed wall thoroughly for pin holing, voids or thin spots. Lightly re-spray any areas ' requiring additional milage to the correct thickness for the substrate. 7. After application, applicator must verify that: , a.Adequate foundation drainage system is installed (See Drainage Requirements) b. All penetrations (water, sewer, etc) have been properly sealed. c. Backfill does not exceed the level of the waterproofing membrane. � d.Grade slopes away from the foundation. e. 40 cured mils are on the wall. f. Backfill does not occur until the TUFF-N-DRI Membrane is fully cured. ' 8. The waterproofing contractor or applicator may pass the responsibilities in number 7 on to the builder or general contractor, and ensure that the builder or general contractor is aware of these , responsibilities, should they da so. 9. To waterproof penetrations, the voids around the penetration must be filled with hydraulic � cement, non-shrinking grout or vinyl concrete patch. The penetration area must then be sealed with an additional coating of TUFF-N-DRI Membrane or a urethane liquid membrane. WARM-N-DRI / TUFF-N-DRI Barrier Board Installation ' 1. Applying the board at the correct time is essential to ensure good adhesion to the TUFF-N-DRI ' Membrane. The board must be set as the membrane begins to cure. The proper timing for this will vary. 2. To install the board, place the bottom of the board on the footing at the footing/wall joint and , press firmly. Slowly work your way up to the top of the board carefully pressing the board onto the membrane. Take special care not to slide the board. The board may appear to be loose, but ' as the membrane cures, it will draw the board in resulting in excellent adhesion between the board and the membrane. If the board falls off, check the integrity of the membrane and re-spray to 60 mils wet if needed. It may be necessary to spray a mist of TUFF-N-DRI membrane on the ' wall to increase adhesion. 3. Place the board around the foundation in the same direction as the membrane was applied. All ' boards should be checked before leaving the job site. When the WARM-N-DRI Board or '