203bA-bB: Exterior Finishes Flashcards
Is cladding a wall finish?
Yes that’s NBC terminology
Clap board
Bevel siding
Rabbeted siding
Shiplap siding
Drop siding
5 main wood exterior siding styles
Board and batten
T+G
Channel
3 main VERTICAL siding styles
Can I install blocking between studs to mail vertical siding?
Yes
This wood siding is usually rough and “split”
Shakes
This wood siding is often sawn and ALWAYS tapered
Shingles
Can I use indoor nails for siding?
No, corrosion resistant, galvanized, stainless steel
Aluminum and steel
Main metal siding materials
Why is my metal siding corrugated?
Expansion and contraction
How do we I protect vertical panel siding joints?
Batten strips or caulking
How do I start a new course of full panel siding?
Lap it or flash the joint
Do the brick on my house exterior hold anything up?
Non load bearing
Benefits to masonry siding
Don’t let water in but CAN let moisture out through weeping
Cement, limestone and sand
3 main components of stucco
Why is acrylic stucco better than traditional?
Can handle building movement without cracking
Can my brick veneer just float there?
No, had to be tied into the structure or supported by extension in the foundation wall
MUST do after papering building
Tape joints
Can I use any material for building sheathing?
Must be BREATHABLE
SHEDS WATER at horizontal joints or changes in material
FLASHING
Why does my drip cap need a 6% slope?
She’d water downwards
Why can’t my drip cap be less then 5mm away from the surface it’s overhanging?
Needs to shed water WAY from the vertical surface below
Can my end damn on my flashing be lower than 1” (25mm)?
No
If my roof overhang is 4 feet and the top of my window is 1 foot away from the soffit, do I need to flash it?
No. 1:4 ratio
Windows top distance to eaves: roof overhang
If I start vinyl siding above my stucco, what do I need to separate it?
Flashing
2 main parts of eaves
Soffit and finished fascia
Material from wall to truss tail
Soffit
Where does air in my roof go to move through the house?
Vented soffit
Can I leave my exterior wall finishes out in the rain?
Keep them weather protected before installation
Install siding from eaves to foundations?
No. Always bottom to top workflow
1” overhang + floor height + wall height to soffit
Wall height for siding calculations
What is the VISIBLE dimension of siding after installing?
Exposure
How do we keep the bottom courses of cladding safe from moisture?
50mm (2”) from roof finish (such as intersecting roofs)
200mm (8”) above finished grade (at ground level)
VINYL and METAL siding exposure (constant)
Wall height/siding exposure
Take decimal x siding exposure to determine last row width
100mm (4”) overlap
Sheathing membrane
Flashing
Sheathing membrane
Trim, dividers, corner pieces
Siding
Materials to be installed for siding finish
Wall to soffit joints
Vinyl siding meets another finish
Sometimes window flashing
J trim main uses
What do we do with all pieces of flashing and siding and building membrane?
Lap things for a shingling effect ALWAYS
Can I butt my siding panels together?
No, always need a 1” (25mm) overlap at vertical joints
What does my first row of vinyl siding need that none of the others need?
Starter strip to fasten to
When I have slotted nail holes can I nail into the edges of it?
No. Nail into the centers to allow for movement
Be careful cutting siding in the cold
It can crack because it’s more brittle
Never do this one thing when installing horizontal siding
Line up vertical joints
Do i need to not be 2 pieces of siding to get around hose bibs?
No, notch one and lap it over the other piece
How do we secure siding underneath windows?
Install j channel then under sill trim then punch a lug into the siding that clips into the under sill trim
Can i have solid j channel along the bottom of my wall?
Needs drilled holes for draining water
Something important when installing multiple metal siding materials
Reactions with one another that can cause deteriorating or discolouring
1) siding height - 25mm overlap = exposure
2) wall height / exposure = theoretical rows
3) round UP decimals so your rows are full width pieces
4) wall height / ACTUAL rows = ACTUAL EXPOSURE
Wood siding exposure and row calculation
Metal caps
Mitred joint
Corner post
3 options for dealing with wood siding outside corners
Why do I need a starter strip at the top of my first row of vinyl but at the bottom of my first row of wood?
Vinyl = attach top to strip
Wood = strip pushes bottom out for shingling effect away from house
With board and batten, what needs to be 12mm?
Both the batten OVERHANG
AND
The space between boards
Why does my rabbet siding need 3mm between rows?
For expansion and contraction into the joint it’s butting into from the bottom
32mm overlap for calculating siding exposure?
Fibre cement
50mm (2”) clearance
Space between fibre cement siding and other finishes and surfaces such as the ground or steps
How do we “kick” water away from a house wall when it’s traveling down a lower roof next to it?
Kick out flashing?
Whats the strip above my window for?
Cap flashing with a shim behind the top of it
Can i nail my siding at the thinnest part of it closest to the building?
No, aim for the thickest part or overlap
When do I need a frieze board?
Close cornice (no overhang)
When do I need a NOTCHED frieze board?
Yo notch around rafter tails at the building in an open cornice where soffit won’t be installed
What is soffit attached to generally?
Fascia at tail end, j channel at wall
With all siding, can anything come in contact?
Better safe than sorry. Keep separation between material changes via clearances and flashing
Wire mesh
Scratch coat: scratched for next coat adhesion (1)
Brown coat: rough and damp (2)
Finish coat (3)
Main components to install stucco
Stuccco mesh corner joint acceptable if it’s 3” overlap?
No. Must be 6” (150mm)
5/8” thick….
Final thickness of stucco
1/4” each scratch and brown
1/8” finish
8” from finished grade for stucco?
Tes
How do we tie stone veneer into a building wall without foundation support underneath?
Metal ties
Way to support masonry that looks like it just floats
Angle iron
Widen the foundation wall
Crib a ledge in the foundation
2 ways to support masonry from existing building
Do my lowest row of bricks need to be different?
Require weep holes every 32” for moisture and air movement
1 storey:65mm
Ratio of house floors to FOOTING width when masonry must be supported
Something ALL masonry needs between its backside and the house wall
1” AIR SPACE
