Roofing Applications
Alberta Prestige works with all
manufacturer specifications
to ensure peace of mind.
Chimney Flashing
Its primary function is to bridge the gap between the roof decking and the chimney
preventing water from getting in your home. Proper flashing is essential to avoid damage.
Base Flashing
Chimney base flashing covers the base of a
chimney. Overlapping individual L-shaped
metal along the bottom of the chimney.
Step Flashing
Used for the vertical sides of the chimney.
Step flashing consists of multiple L-shaped
pieces of metal. They are installed one by
one per shingle up the chimney.
Backpan Flashing
A chimney backpan is a specialized piece of
flashing installed on the top side of a chimney.
Its primary job is diverting rain and melting
snow away 4 inches past either side.
Counter Flashing
Installed directly over the base and step flashing.
On masonry chimneys, counter is embedded
and mortared directly in the brick to prevent
water from running behind the flashing.
Valley Installation
Three methods with asphalt roofs:
Open, closed cut, and woven valleys.​
For all methods, valley flashing must
be in place before installing shingles.
Underlay is required before valleys.
Open Valley
Open valley roof is a roofing design where the
shingles from both intersecting roof planes stop
short 3 inches of the valley centerline, exposing
metal flashing. This visible metal channel directs
heavy water and snow quickly off the roof.
Closed Cut Valley
In a closed-cut valley, shingles from the roof
that is smaller or lower run into the bigger or
steeper side running across the valley and up
the intersecting slope. The shingles overlap
and are cut 1-2 inches from the centerline.
Woven/Weaved Valley
Woven valleys involve Weaving shingles
up both intersecting roof planes directly
across the valley interlacing shingles
from alternating sides back and forth.
Ventilation
Having proper ventilation at the eaves
and ridge will help optimize your roof.
To eliminate moisture. You want a equal
balance of 50% intake and 50% exhaust.
Proper Insulation Prevent Ice Dams
By keeping the roof deck cold and ventilated
in the winter this prevents snow from melting
and freezing at the eaves, which helps
stop ice dams causing damage.
Roofing Baffles
Roof baffles (also known as rafter vents)
create an unobstructed air channel between
your roof's insulation and the roof deck.
They allow fresh air to travel from the
soffit preventing moisture ice dams.
Overlaping Layers
If your attic is long, overlap the baffles by about
1 to 2 inches (with the upper baffle resting on top
of the lower one) so that moist air cannot escape.
Cardboard Insulation Stops
Insulation Stops help hold blown-in insulation
securely in place while maintaining a clear
ventilation pathway for improved airflow.
Intake & Exhaust
