Roofing
Roof Replacement in Calgary
Axion Roofing replaces Calgary roofs to the deck: rotted sheathing swapped, ventilation corrected to code, ice and water membrane extended, and impact-rated shingles installed.
Axion Roofing replaces Calgary roofs down to the sheathing, corrects the attic ventilation to code, and installs an impact-rated shingle system sized for Hailstorm Alley. Flori, the owner of Axion Roofing, inspects the deck himself once the tear-off exposes it, so rotted sheathing gets found before the new roof covers it.
A roof replacement in Calgary is a hail decision before it is a cosmetic decision. The City of Calgary states in its Climate Ready measures for roofs that Class 4 impact-resistant shingles reduce the chance of damage by 15 times compared with standard asphalt shingles, pay for themselves in roughly 5 years, and return about $3 for every $1 in added cost.
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When a Calgary roof needs replacement instead of repair
Replace the roof when one of these conditions applies:
- Hail has bruised the shingle mat across multiple slopes rather than at one impact point.
- Granule loss exposes the asphalt mat over more than roughly a third of a slope.
- The roof carries two or more layers and the deck cannot be assessed without tear-off.
- Shingles have reached the end of a 20 to 25 year Calgary service life and have started to curl or crack at the keyways.
- An insurance adjuster has scoped a full replacement after a storm.
Repair the roof instead when damage stays local to one valley, one flashing, one vent stack or one storm-lifted section. Emergency roof repair in Calgary covers that scope.
Down to the deck
What a full tear-off actually exposes
01The slope stripped to bare sheathing. Nothing about the deck can be assessed until this point.
02Delaminated and water-damaged panels replaced by the sheet, counted and reported before install.
03Ice and water membrane run at the open eave, ahead of underlayment and the first shingle course.
02 / 05
What Axion Roofing includes in a Calgary roof replacement
- 01
Full tear-off to the deck
Axion Roofing strips every layer. Shingling over an existing roof hides sheathing rot and voids most manufacturer warranties. - 02
Sheathing replacement
The crew replaces delaminated or water-damaged plywood and OSB by the sheet and reports the count before installing. - 03
Ice and water membrane at the vulnerable planes
Eaves, valleys, sidewalls, chimneys and skylight curbs get self-adhered membrane. Calgary freeze-thaw cycling drives meltwater backward under shingles, and membrane is the only layer that stops it. - 04
Ventilation corrected to the National Building Code, Alberta Edition
Section 9.19 requires an unobstructed vent area of at least 1/300 of the insulated ceiling area on standard slopes, with at least 25% of the openings at the top of the space and at least 25% at the bottom. Axion Roofing counts the existing intake and exhaust, then adds soffit intake or ridge exhaust to close the gap. - 05
Impact-rated shingles
UL 2218 Class 4 shingles survive two strikes from a 2.00 inch steel ball at the same location without tearing, fracturing or cracking through the back of the shingle. Class 1 through Class 3 shingles are tested with 1.25, 1.50 and 1.75 inch balls respectively. - 06
Flashing rebuilt, not resealed
Step flashing, counter-flashing, apron flashing and valley metal get replaced during the tear-off.
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How long a roof replacement takes in Calgary
Most detached Calgary homes take one to two working days from tear-off to cleanup. Steep-slope homes, cut-up roofs with multiple dormers, and homes with cedar shake removal take longer because the tear-off volume roughly doubles. Axion Roofing schedules the tear-off and the install on the same day so the deck is never left open overnight in a rain window.
04 / 05
What drives roof replacement cost in Calgary
Five variables move a Calgary roof quote more than anything else: total squares, roof pitch, the number of layers being removed, the count of penetrations and valleys, and the shingle class you choose. A Class 4 upgrade adds material cost at install and removes the risk of a second replacement after the next hail event. Owners who already carry hail damage should read how roof insurance claims work in Calgary before signing anything.
From the jobsite
From stripped deck to finished field
Underlayment, starter course, ridge venting and the completed elevation on Calgary replacements.
Click any photo to enlarge
Synthetic underlayment covering hip roof deck 
Roofer installing starter course over underlayment 
Ridge vent installed along shingle ridge with tools 
Aerial view finished charcoal shingles and valley
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Book the inspection first
Axion Roofing quotes a Calgary roof replacement only after inspecting the roof surface, the flashing details and the attic. Request a free roof estimate in Calgary and you receive a written scope listing membrane coverage, vent count, flashing detail and shingle rating.
Axion Roofing offers the rest of its Calgary roofing and exterior services from the same crew, including hail restoration and eavestrough replacement on the same mobilization.
Sources
- The City of Calgary, Climate Ready measures: Roofs.
- UL 2218 Standard for Impact Resistance of Prepared Roof Covering Materials, as summarized by the Insurance Institute for Business & Home Safety.
- National Building Code, Alberta Edition, Division B, Section 9.19 Roof Spaces.
Free estimate
Book the inspection before the quote
Flori inspects the roof, the flashing and the attic, then issues a written scope. No deposit before the scope is agreed.