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Dr. Fixit Samshield

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Dr. Fixit Samshield XL is a self adhesive waterproofing membrane based on a tropical grade of polymer modified
bitumen. The bitumen compound is laminated onto an impervious, non-perforated, cross laminated HDPE film.
The membrane is protected on the self adhesive side with a silicone coated release film. Dr. Fixit Samshield XL
conforms to the requirement of BS 8102.


 Areas of Application
Dr. Fixit Samshield XL used as waterproofing and damp proofing intended for concrete protection. It may be
used for horizontal and vertical application and as a damp proofing course for tanking below ground structures,
subways and retaining walls..
Features & Benefits
1. Specially formulated for tropical climate grade.
2.Provides protection against water and vapour.
3. Self adhesive, requires just peeling off the silicone film and sticking to the surface.
4.Excellent adhesion to vertical and horizontal surfaces.
5.Excellent resistance to chlorides, sulphates, alkalis and acids.
6. Good tear and puncture resistance.
7.Excellent tensile strength.

Method of Application
The application temperature should be between 40C to 450C. Application procedure may vary slightly depending
upon site conditions. The general recommended guidelines for the application of the self adhesive waterproofing
system are as follows:

The surface shall be cleaned thoroughly of all contaminants like dust, traces of curing compound, oil and grease.
All surface imperfections, protrusions, structurally unsound and friable concrete must be removed and repaired
with a suitable concrete repair mortar.
Apply Dr. Fixit Bitushield Primer SB @ 4-6 sq.mtrs./litre to a clean, smooth and dry surface by brush or roller.
Allow the primer to dry prior to the application of the membrane. As the viscosity of the primer is low, it easily
penetrates into the concrete pores which promote the adhesion between the membrane and the concrete
surface. In addition to that the primer also acts as a binder for the dust which gets accumulated on the concrete
surface even after cleaning.
Start the installation of all membrane plies from the low point or drain, so that the flow of water is over or parallel
to the plies, but never against the laps. All overlaps at the membrane seams shall be installed so as to have “up”
slope laps over “down” slope laps. Begin membrane application by unrolling the roll of Dr. Fixit Samshield XL
membrane and aligning the side laps.

Peel off the release film from the self adhesive side and start unrolling the membrane and press it to the surface.
Smoothen the membrane from the center to the edges with a wooden press in order to remove entrapped air.
Furthermore, an iron roller shall be used for rolling on top of the applied membrane to ensure a proper and strong
adhesion of the bitumen compound with the base surface. Side overlaps shall be a minimum of 50mm on the
selvedge and end overlaps 100mm.

The membrane shall be protected immediately after application from damage, due to ongoing site activities or
from sharp aggregates during backfilling by a tough, weather, warp and rot proof asphaltic protection board.
Alternatively, on horizontal areas the membrane can also be protected by laying a cement sand screed (50 mm).

Thickness (mm) (XL 1500/2100) 1.6     |  2.1 DIN EN 1849-1
Mass per unit area, (kg/m2) (XL
1.6     |  2.1 DIN EN 1849-1
Top Surfacing Cross Laminated HDPE film  
Softening Point, (R&B) (oC) > 105 ASTM D 36
Tensile Strength (L/T), (N/mm2) 42/48 ASTM D 882
Elongation (L/T), (%) Film


Trans 180

ASTM D 882
Tear Resistance (L/T), (N) Film 340/310 ASTM D 1004
Adhesion Strength, (L/T), (N/ mm) Primed Substrate Self



ASTM D 1000
Puncture Resistance, (N) > 220 ASTM E 154
Hydrostatic pressure > 50 m (5BAR) No leakage BS EN 12390 (Part 8)
Water Absorption, (%) Film 0.14 @ 24 hrs (g/m2) ASTM D 570
Water vapour transmission, (G/m2 /24 hours) < 0.1 ASTM E 96
Chemical Resistance (pH) 2.5-11.5 ASTM D 543
Low temperature Flexibility - 15oC ASTM D 1970
Crack Bridging Ability, (mm) > 1.5 ASTM C 836