ADDENDUM FOR ACRYLIC RECOAT SPECIFICATION

 

1)

ADDENDUM:

  1. It will be necessary to change the specification, if it is deemed necessary to increase the structural or tensile strength of the acrylic coating with the addition of Tietex 272 over the entire roof surface.
  2. If the intent is to retrofit an existing roofing system with polyester membrane and acrylic coatings, it will be the contractor or consultants responsibility to make certain the existing roof substrate is sound enough for application.
  3. Any areas of wet insulation or badly deteriorated existing roofing system must be removed and replace to water tight status.
   
2)

SURFACE PREPARATION:

  1. All surfaces that are to receive the polyester membrane and acrylic coatings must be cleaned thoroughly to remove any contaminants. I.E. dirt, oil, leaves, debris, etc. by whatever means necessary to insure the surface is clean. I.E. power wash or broom and blow.
   
3)

APPLICATION:

  1. Field areas shall utilize 40” wide polyester with 1 gallon of AMP surface conditioner under the fabric and 1 gallon of AMP surface conditioner over the fabric in on continuous motion, working out all bubbles and wrinkles. Insure the edges do not fish mouth.
  2. All over laps on seams shall be a minimum of 4” overlap on the start of a new run of coating and fabric over the adjacent run.
  3. Once all field areas have been fully fitted with polyester membrane and acrylic coating, it will then be necessary to complete all penetration, curb, and cant area or flashing details using the three course method polyester membrane and AMP surface conditioner. Do not buck water or any voids or fish mouths are visible.
  4. Allow this to cure for 24 hours prior to the application of the grey or white acrylic coatings
   
4)

INSTALLATION OF ACRYLIC COATINGS:

  1. The acrylic coatings will be applied to the entire roof surface area in three coats achieving a total rate of 4 gallons per 100 square feet.
  2. The initial basecoat will be grey and applied at the rate of 1 gallon per 100 square feet the dry film thickness shall be 8-10 dry mils.
  3. The second coat shall be white and applied at the rate of 1.5 gallons per square feet at the dry film thickness shall be 13-15 dry mils.
  4. The third coat shall be white and applied at the rate of 1.5 gallons per 100 square feet, the dry film thickness shall be 13-15 dry mils.
  5. The other dry film thickness inclusive of the polyester membrane, AMP surface conditioner and acrylic topcoats shall be 60+ dry mils.
   
5)

WARRANY

  1. This system shall qualify for a 10 year manufacturer warranty for materials against defects in manufacturer.