Masonry Flashing Flashcards Preview

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Flashcards in Masonry Flashing Deck (16)
1

slope of the coping called

the wash

2

tops of walls/parapet flashed,
and capped w

coping

3

base flashing installed at bottom of exterior wythe,
extend ...

up 8-10” and set in joint in interior wythe.

4

weep holes located

24” OC horizontally,
in lowest course of brick.

and over windows,
+ shelf angles.

5

today openings are typ. spanned w:

steel lintels

6

alts to steel lintels

concrete beam,
or masonry bond beam.
(fully grouted/reinforced)

7

lintel carries load in triangular area w in __º from each side of opening

60

8

white deposit of salts

Efflorescence

9

efflorescence caused by

materials w soluble salts

10

efflorescence removed by

dry brushing,
or washing w 5% solution muriatic acid.

11

@ completion of a job, brick cleaned w

5-10% solution muriatic acid

12

problem w High Pressure Washing

may wash away mortar and create swirls

13

Water and Brush are best cleaners for

soft brick

14

used for cleaning stubborn dirt/stains

Acid Solutions

15

technique used if mortar has fallen out

mortar removed to about 2.5x width of the joint,

cleaned, wetted,
new mortar pressed in,
w special tool.

16

best mortar for tuckpointing (repointing)

high lime mortar is best, applied in layers.
(after previous is thumbprint hard)