Upgrading to Class 4 shingles in Calgary is generally worth the extra cost, because the city gets frequent and severe hailstorms. The upgrade pays off most if you plan to stay in your home for eight years or more. Research from the Institute for Catastrophic Loss Reduction found that these shingles make hail damage about 15 times less likely in Calgary.
But it is not right for everyone. The payoff depends on your insurer, your budget and how long you will own the house. This guide covers what the upgrade really costs, what these shingles really do, and when you should skip them.
What Makes a Shingle “Class 4”?
Class 4 is the top score in a lab test called UL 2218. Testers drop a 2-inch steel ball onto the shingle, twice in the same spot. If the shingle shows no cracks or damage, it earns the rating. Most Class 4 impact resistant shingles are made with a rubber-like asphalt. That rubbery feel helps the shingle absorb a hit instead of splitting.
The next step down, Class 3, uses a slightly smaller steel ball (1.75 inches). Class 3 shingles are decent and cost less. Our full guide to Class 3 vs Class 4 shingles breaks down the difference in more detail. For now, just know that Class 4 is the highest rating you can buy.
One thing to be clear about. Class 4 does not mean hail-proof. A steel ball in a lab is not the same as a real storm. Very large hail, strong wind or repeated storms can still damage any roof.
How Much Protection Do You Really Get?
The Institute for Catastrophic Loss Reduction (ICLR) is an insurance-industry research group. It has studied impact-resistant shingles in Calgary twice, and both studies point the same way.
The newest numbers came out in June 2025. The City of Calgary asked ICLR to review its Resilient Roofing Rebate Program, which paid homeowners $3,000 to install Class 4 roofs. ICLR found that those upgraded roofs avoided about $13 million in hail damage, and the program cost the city about $5.25 million. That is nearly three dollars saved for every dollar spent. ICLR’s range for the savings was wide, from $7 million to $33 million.
Its earlier 2022 study looked at an average Calgary home and found:
- Damage is about 15 times less likely with these shingles.
- When damage does happen, the average repair cost drops by about half.
- The benefits were about three times the extra cost.
The 2022 study used models and the 2025 review used real Calgary roofs, and both reach the same conclusion. Class 4 is not a promise, but a hail resistant roof in Calgary is much less likely to need repairs after a bad summer.
What Does the Class 4 Shingles Upgrade Cost?
Class 4 shingles cost more than standard shingles, usually about 10% to 20% more. On a typical Calgary roof, that works out to roughly $1,500 to $3,500 extra, depending on the roof size and the product you pick. Malarkey Vista is a Class 4 shingle in the middle of the range. Malarkey Legacy is Class 4 too, but it costs a little more because it is the top line. Both cost only slightly more than Malarkey’s Class 3 Highlander, so inside one brand the gap is small.
Prices move, so treat that as a rough guide and not a quote. When you compare roof replacement Calgary quotes, ask each company to name the exact product an
Will Class 4 Shingles Lower Your Insurance in Alberta?
Possibly, but it depends on the insurer. A 2026 study by MNP for the Insurance Bureau of Canada found that homeowners in the highest-risk parts of Alberta can cut their premiums by up to 50% with hail-resistant roofing and siding. They may also get lower deductibles and better access to full replacement cost cover. But “up to 50%” is the best case, and it covers roofing and siding together. Some insurers give a discount for impact resistant shingles in Alberta, and some give none.
So call your broker before you buy and ask:
- Is there a Class 4 shingles insurance discount, and how much?
- Will it change my hail deductible?
- Will my roof be paid at full replacement cost?
- Will you help pay for the upgrade after a hail claim?
That last question can matter. One Sunwest customer said in a review that they got $2,500 back from their insurer for upgrading to Class 4 shingles after a hail storm. Every policy is different, so ask yours. And do not count on the City of Calgary’s old $3,000 rebate for Class 4 roofs. It ended in 2022 and is not coming back.
When Class 4 Is Not Worth It
Class 4 shingles in Calgary are not for everyone. Think twice if any of these sound like you:
- You plan to sell in two or three years. You may not be around long enough to see the savings.
- Your insurer gives no credit. If your deductible and coverage stay the same, the only payoff is lower hail risk.
- Your budget is tight. A well-installed Class 3 roof beats a badly installed Class 4 roof every time. Our Class 3 vs Class 4 shingles guide can help you weigh it up.
The upgrade makes the most sense if you plan to stay 10 years or more, have a high hail deductible, live in a part of the city that gets hit often, or have an older roof that your insurer would pay for at a depreciated value.
5 Things to Check Before You Pay for Class 4
- Is that exact product really Class 4? Many brands sell a Class 3 line and a Class 4 line with similar names. Malarkey Vista and Malarkey Legacy are Class 4. Malarkey’s Highlander line is Class 3. Ask for the data sheet.
- Do the ridge caps match? Some makers, Owens Corning for one, require matching impact-rated hip and ridge shingles to complete the Class 4 system for warranty.
- Will you get proof for your insurer? Ask for an invoice or certificate that names the product and its rating.
- Will the crew check the deck? New shingles on a soft or rotten deck waste your money.
- Is the upgrade a separate line on your quote? A roofing company in Calgary that is open about pricing will show it.
How Sunwest Roofing Handles Class 4 Upgrades
Sunwest Roofing has replaced more than 4,000 roofs in Calgary since 2011. Our own trained crews do the roofing work, and most roofs are finished in about a day. We are an Owens Corning Preferred Contractor and Malarkey Certified, and we back our work with a 10-year workmanship warranty plus applicable manufacturer warranties. Our Google rating is 4.9 from 268 reviews.
Here is how we handle Class 4 shingles in Calgary. Our Class 4 shingle installation in Calgary uses Malarkey Vista and Legacy, both Class 4 impact resistant shingles. Alex Iglesias, our HAAG-certified inspector, can also document hail damage for your insurance claim.
Right now we offer 50% off the upgrade cost to Class 4 shingles when you choose them for your roof.
Ready to see what the Class 4 upgrade would cost on your roof? Call Sunwest Roofing at (587) 206-4736 or request a free, no-obligation roof replacement Calgary estimate at
FAQs
1. Do Class 4 Shingles in Calgary Cost More?
Yes. Class 4 shingles typically cost 10% to 20% more than standard shingles. For a typical Calgary roof, the additional cost is approximately $1,500 to $3,500, depending on roof size and product selection. Ask your roofing contractor for a written quote that lists the upgrade cost separately.
2. Will Class 4 Shingles Lower My Home Insurance in Alberta?
Possibly. A 2026 study by MNP for the Insurance Bureau of Canada found that homeowners in Alberta’s highest-risk areas could reduce premiums by up to 50% with hail-resistant roofing and siding. However, this is a best-case figure, and actual discounts depend on your insurer and policy. Contact your insurance broker before choosing an upgrade.
3. Are Class 4 Shingles Hail-Proof?
No. Class 4 shingles are impact-resistant, not hail-proof. They pass the UL 2218 test, which involves dropping a 2-inch steel ball onto the same spot twice without causing cracks or damage. ICLR research found that hail damage is about 15 times less likely with these shingles, but severe or repeated hailstorms can still cause damage.
4. Does Calgary Still Offer a Roofing Rebate for Class 4 Shingles?
No. The City of Calgary’s Resilient Roofing Rebate Program ended in 2022. The city confirmed in 2025 that the program would not return. Homeowners should not include the previous $3,000 rebate in their current roofing budget.
5. Do All Roofing Brands Offer Class 4 Impact-Resistant Shingles?
No. Not every shingle model has a Class 4 impact-resistance rating. Some manufacturers offer both Class 3 and Class 4 products. For example, Malarkey Vista and Legacy are Class 4, while Highlander is Class 3. Always check the exact product name and manufacturer data sheet before approving your roofing quote.
