Lath

Question 1

What is the tolerance for level and plumb on weep screed, casing, and J-metal?

Answer 1

No tolerance

Question 2

What is to be done on the outside corners of all weep screed?

Answer 2

Mitered and clipped to match the corner aid.

Question 3

What type of weep screed is installed at all shear walls?

Answer 3

FHA #9

Question 4

What type of weep is installed at non-shear wall locations?

Answer 4

FHA #7

Question 5

What size casing is installed at gable vents?

And what is the Stucco Tradepartner to do around the entire perimeter of the gable vent?

Answer 5

3/8” casing

Caulk the perimeter

Question 6

What size of casing is installed at garage return walls?

Answer 6

3/8” casing

Question 7

What size casing is installed at all exterior doors?

Answer 7

1 3/8” casing

Question 8

What should be done with the header piece of casing when installing it on exterior doors?

Answer 8

The header piece is to extend 1” past both legs

Question 9

Who installs batt insulation behind all non-accessible (tub/shower/fireplace) locations?

Who provides the insulation?

Answer 9

The lath Tradepartner installs the batts.

The Shea field manager provides the insulation to the lather.

Question 10

What type of vapor barrier does the lather install?

Answer 10

60 minute grade “D” vapor barrier

Question 11

How many layers of vapor barrier are installed over OSB?

Answer 11

2 layers

Question 12

What is the minimum head lap for the vapor barrier?

Answer 12

6”

Question 13

What is the minimum end lap on the vapor barrier?

Answer 13

12”

Question 14

At windows, the first two rows of vapor barrier (from the bottom) are to be installed how?

Answer 14

Behind the window moist stop

Question 15

What is to be installed on top of all parapet walls?

And how far should it wrap down all sides?

Answer 15

Bituthane.

Wrap a minimum of 4”

Question 16

What is to be installed at all recessed windows and ledges 6” or deeper?

And how far up and down the sides should it wrap?

Answer 16

Bituthane.

It should wrap up and down all sides a minimum of 4”

Question 17

At all recessed windows and ledge locations the moist stop, bituthane, and grade D vapor barrier should be installed how?

Answer 17

Tightly into the corners

Question 18

What gauge and size wire should the lather use?

Answer 18

1” - 20 gauge wire

Question 19

What type of foam board should the lather use?

Answer 19

1.5 lb. tongue and groove foam

Question 20

How should the foam be installed?

Answer 20

• Tightly utilizing the interlocking tongue and groove.
• Horizontally, with the sheets staggered at the joints.

Question 21

Foam should be installed tightly to widow frames and eave blocks with a maximum gap of _______ ?

Answer 21

1/4”

Question 22

At all mopboard locations the foam is to terminate where?

Answer 22

It is to terminate directly on top of the Z-bar metal.

Question 23

What should be done to all the joints in the foam board?

Answer 23

They are to be taped, caulked or covered per the local municipality guidelines.

Question 24

What does the lather install at all attic areas?

Answer 24

1” R-tech foam (or Star-R Guard). Standard foam is not acceptable at these locations.

Question 25

How is R-tech or Star-R Guard installed?

Answer 25

All joints are to have solid backing, all non-tongue and groove seams and gaps that exceed 1/4” (including gaps at barge blocks) are to be sealed with R-tech or Star-R Guard tape.

Question 26

Lath wire is to have a minimum _____ inch head lap. And a minimum _____ inch end lap.

Answer 26

3” 6”

Question 27

All lath wire is to be stapled off every ____ inches at the perimeter and ____ inches in the field.

Answer 27

6” 6”.

Question 28

Lath staples should not be set deeper than _____ below the surface of the foam.

Answer 28

3/8”

Question 29

There should be no lath staples closer than ____ inches to the edge of the window frame.

Answer 29

2”

Question 30

Lath nails/staples are to have a minimum ____ inch penetration into solid wood.

Answer 30

3/4”

Question 31

Is OSB or plywood considered solid lath backing?

Answer 31

NO. Solid backing is 2X material only.

Question 32

What is an expanded metal butterfly?

Answer 32

A minimum 4” X 4” diamond mesh metal.

Question 33

Where does the lather install expanded metal butterflies?

Answer 33

At the top corners of all doors, and at all corners of window openings.

Question 34

Is a metal butterfly required if a window gets popouts?

Answer 34

No

Question 35

What is the tolerance for plumb, level and square for popouts?

Answer 35

No tolerance

Question 36

What does the lather install on all outside edges?

Answer 36

Corner aid

Question 37

What do soffits 12” or wider receive?

Answer 37

Diamond mesh metal on the entire horizontal surface

Question 38

What does the lather install at all stone locations?

Answer 38

Minimum 18 gauge diamond mesh metal

Question 39

After the completion of the lath, what is the lather required to do at all “recessed” windows?

Answer 39

They are required to water test all “recessed” windows.

Question 40

How should corner aid be secured?

Answer 40

It should be secured every 18” OC on both sides.

Question 41

The lather is to caulk all gaps and penetrations in the foam and vapor barrier (inside and out) with what?

Answer 41

An approved polyurethane caulking

Question 42

What is the lather required to do on the inside of the weep screed?

Answer 42

Caulk the weep screed to the bottom plate with an approved caulking.

Question 43

What is the lather required to do at all nails/staples that miss the backing?

Answer 43

Remove or clip them, and caulk the penetration in the vapor barrier with an approved polyurethane caulking.

Question 44

What is the lather required to do with any torn, or damaged vapor barrier?

Answer 44

Repair it and seal it with an approved polyurethane caulking (no painters caulk).

Question 45

What is the final inspection the lather is required to do upon completion of a job? And what should they do if they find any items?

Answer 45

They are to inspect all electrical wires, plumbing lines and Freon lines for staple penetrations. If a water line is hit, the water is to be turned off. They are to mark the location on the floor and then notify the Shea field manager.

Question 46

Why is the weep screed at shear walls a different size?

Answer 46

So the weep can plane out evenly with the weep at non-shear walls.

Question 47

How far should all corner aid be held out and why?

Answer 47

3/8" from the lath to allow consolidation of the stucco behind the metal.