Roof replacement cost in Calgary

What a roof replacement involves

A roof replacement takes a roof down to the deck and builds it back up. Here are the steps, in order.

1. 1.Inspection

   We inspect and give one written price.

2. 2.Tear-off

   The old shingles come off, down to the roof deck. The deck is the wood base the roof sits on.

3. 3.Deck check and repairs

   After tear-off, the roof deck is inspected before new materials go down. A damaged board under the old shingles needs repair before anything goes on top of it.

4. 4.Underlayment

   Underlayment is a layer that goes over the deck and under the shingles. Ice and water shield is a sticky membrane that is used along the eaves.

5. 5.Ventilation

   Attic ventilation lets air move through the attic, in low and out high. It is part of planning a replacement. Read more about roof and attic ventilation.

6. 6.Shingles

   New shingles go over the underlayment. Flashing is thin metal that seals the roof where it meets a wall or a pipe.

7. 7.Cleanup

   Bins and nail magnets for cleanup.

What changes the cost of a roof replacement

Every roof is different. Six things shape the roofing cost in Calgary for any house.

• Roof size. A bigger roof needs more material and more time.
• Shingle type. Asphalt and metal are both options. The one you pick changes the cost.
• Pitch and complexity. A steep roof, or one with many valleys, dormers and vents, takes more work.
• Deck repairs. Damaged boards under the old shingles have to be repaired.
• Ventilation. Ventilation is part of planning a replacement, and every attic is different.
• Access. Tight access, steep ground or a long carry for materials adds time.

You cannot read any of this from the street. The new roof cost in Calgary comes down to the roof itself.

For a longer read, see how much does a roof cost in Calgary.

Repair or replace?

A repair fixes one problem. A replacement gives the whole roof new shingles.

These are common signs that a roof needs replacing:

• Shingles curling, cracking or shedding granules past about 20 years.
• Repeat leaks, or a repair quote close to a replacement.

Weigh any repair against the cost to replace a roof in Calgary. If you are not sure, read signs a Calgary roof needs replacing, or look at roof repair.

Timing is a common question too. Read can you replace a roof in winter in Calgary.

Shingle options: asphalt and metal

Asphalt shingles and metal roofing are common options for a roof. Asphalt shingles are made in many colours and styles. Metal roofing comes as panels or as shingles.

A roof is the largest part of a house that you see from the street. The colour and style are worth a look before you decide.

A new roof is also a good time to look at the rest of the outside of the house. See siding, fibre cement siding and gutters and eavestroughs.

How the DG quote works

The new roof cost in Calgary comes from the instant estimate, which takes the size of the roof from aerial imagery.

1. 1.Instant estimate

   The instant estimate measures your roof from aerial imagery and shows a range, plus GST.

2. 2.Inspection

   A free inspection confirms it. The cost to replace a roof in Calgary is confirmed after an inspection of the roof.

3. 3.One written price

   We check the roof, confirm the measurements and give you one written price.

Roof replacement questions