WATERPROOFING MEMBRANE
PART 1 GENERAL
1.1SECTION INCLUDES
A.Waterproofing membrane for concrete surfaces.
1.2RELATED SECTIONS Not Used
1.3REFERENCES
A.ASTM D 146: Sampling and Testing Bitumen-Saturated Felts and Woven
Fabrics for Roofing and Waterproofing
B.ASTM D 882: Tensile Properties of Thin Plastic Sheeting
C.ASTM D 4632: Grab Breaking Load and Elongation of Geotextiles
D.ASTM E 96: Water Vapor Transmission of Materials
E.ASTM E 154: Water Vapor Retarders Used in Contact with Earth Under
Concrete Slabs, on Walls, or as Ground Cover
1.4DEFINITIONS Not Used
1.5SUBMITTALS
A.Manufacturer’s product data sheets for review.
1.Include installation instructions for information.
PART 2 PRODUCTS
2.1PREFORMED SHEET MEMBRANE SYSTEM
A.Use a sheet-type membrane system with a self-adhesive surface suitable
for use under hot asphalt overlays. Membrane system includes:
1.Preformed sheet membrane
2.Primer when recommended by the manufacturer
3.Mastic for overlap seams as required by the manufacturer
Waterproofing Membrane
4.Non-working joint/crack sealer as recommended by the
manufacturer.
B.Meet the mechanical properties listed in Table 1.
Table 1 Mechanical Properties of Membrane Property Value Method Thickness, inch 0.065 min. ASTM E 96, Water Permeance, perms 0.10 max. method Strip Tensile Strength: ASTM D 882 Strip Tensile Strength 80 lb/inch (1230 psi) min. or Grab Tensile Strength: Grab Tensile Strength ASTM D 4632 200 lb. min. ASTM D 882 or Elongation, percent 15 min. ASTM D 4632 Puncture Resistance (Mesh), lb 200 min. ASTM E 154 No cracks in mesh or ASTM D 146 rubberized asphalt Pliability, at -15 degrees F when bent 180 degrees over a ¼ inch mandrel
PART 3 EXECUTION
3.1LIMITATIONS
A.Do not work during wet conditions or when the concrete surface or
ambient air temperatures are below 50 degrees F.
B.Do not apply the membrane if it has rained or is expected to rain within
12 hours of application.
C.Do not begin asphalt overlay surface preparation or backfill until the
Engineer has inspected the membrane.
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3.2PREPARATION
A.Concrete Surface
1.Do not place the waterproofing membrane until concrete repairs are
complete.
2.Allow concrete to dry for 48 hours after wet curing is complete and
curing materials have been removed.
3.Remove all sharp ridges and projections that can puncture the
membrane.
4.Sandblast to remove asphalt, curing compounds, and other foreign
material from the entire concrete surface.
a.Sandblast the bottom four inches of curbs or parapets.
5.Vacuum or sweep and use compressed air to remove all dust and
loose material from the concrete surface.
B.Joints and Cracks
1.Follow membrane manufacturer’s recommendations to seal cracks
and cold joints greater than 3/16 inch wide.
3.3APPLICATION
A.Follow membrane manufacturer’s recommendations for application
procedures.
B.Apply primer recommended by the manufacturer of the membrane
material.
C.Place the membrane starting at the low point and working to the high
point.
1.Overlap preformed membrane strips at least 4 inch or as required
by the Manufacturer, whichever is larger.
D.Place the membrane on the vertical face of the concrete parapet or curb to
one inch above the surface of the overlay shown.
E.Patch torn and cut areas and narrow overlaps.
1.Extend the patch at least 4 inch or as required by the Manufacturer,
whichever is larger, beyond deficient areas.
2.Bond the patch firmly to the surface.
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F.Seal all transverse and longitudinal seams and terminations of
waterproofing membrane sheets with mastic as required by the Manufacturer.
1.Longitudinal seams designed to be self-adhering overlaps do not
need to be sealed with mastic.
G.Allow only rubber tire vehicles on the membrane.
1.Do not allow public traffic.
END OF SECTION
Waterproofing Membrane
Waterproofing Membrane in other states
Utah revises spec sections through supplementals and new editions. We check this one every week and email you the day it changes. Free, no account.
Source: Utah Standard Specifications for Road and Bridge Construction, 2026 Edition. Pages 1182–1185 of 1,331.
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