| Corrosion
Resistance:
Freshly prepared concrete specimens were prepared employing
a mixture of Portland cement, sand, water, aggregate
and admixtures. A strip of Fiberweb sheeting was placed
between the freshly prepared specimens and already existing,
plain and air entrained concrete slabs. This combination
remained at ambient temperature for a period of 14 days
and 28 days and then evaluated for adverse effects.
Results: No changes in 14 days
No changes in 28 days
Installation:
Fiberweb is designed to be a protective membrane flashing
against surfaces of structural steel beams, steel lintels
and other structural steel elements buried in masonry
that needs protection from corrosion caused by penetrating
moisture.
Thru-Wall Flashing:
Starting 1/2" from face, bend flashing to form
drip. Extend through veneer and turn up a minimum of
8".
For C.M.U. backup wall, bed flashing in the mortar joint
closest to cavity and seal with a mastic. For wood,
steel stud or framed back-up, seal into sheathing. Lap
flashings around corners and at end joints a minimum
of 6 inches and' seal with an approved mastic.
Concealed Flasing:
Install at windows and doors as specified in spec plans
using a minimum of 6 inch strips of flashing at jambs
and extend¬ing 4" above the head. At head,
apply a 6" inch strips of flashing over jamb flashings.
At sills, flash as for thru-wall installation instructions.
Seal all laps with an approved mastic.
Outside Corners:
(Mitres- left to right): Wrap flashing around the corner,
and starting 1/8" from the right side of the corner,
cut flashing at crease to end of flashing. Secure Flashing
into wall. Wrap the adjoin¬ing flashing from right
of wall back around the flashing making the same incision
as above and lap 6" over the left side.
Apply Fiberweb tape at all laps and cut area and then
a coating of an approved mastic to ensure a long term
seal.
Inside Corners (Mitres):
Wrap flashing around into corner. Starting 1/8"
from innermost point of corner, make an incision in
the flashing that extends to the outer edge. Wrap the
left side of the incision back over the right up to
the bend and press a piece of the Fiberweb tape over
the entire length of the lap, ensuring thatan approved
mastic over the entire taped area to ensure a long term
seal.
End Dams:
Where masonry meets another wall system, form
an end dam by turning flashing up at least 6".
Apply an approved mastic over the entire taped area
and seal to end masonry units.
Maintanance:
None required.
Technical
Services
Technical advice and information may be obtainE'd by
calling or writ¬ing either the manufacturer or its
dis¬tributors.
Filing
Systems
SPEC-DATA® II
Sweets Architectural File 07650
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