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ContractorsRanked

Emergency Roofers in Alliston, ON (2026)

Top 50 of 568 roofers, in emergency orderUpdated 0 paid placements in this rankingHow we rank

25 of the 50 roofers on this list post 24/7 hours. 24/7 businesses come first, then same-day, each ranked by CR Score with availability weighted higher.

Active leak after a storm: move valuables, catch water and stay off the roof. Report storm damage to your insurer.

The short answer

  1. 1

    #1 for emergency roofing in Alliston: Ainger Group Roofing and Exteriors, open 24/7.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

Top emergency roofers in Alliston at a glance

Top emergency roofers in Alliston at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1Ainger Group Roofing and Exteriors934.9★ (476)Barrie, 31 km away24/7
2RonOvations914.9★ (97)Angus, 19 km away24/7
3JN Roofing and Contracting904.8★ (172)Barrie, 28 km away24/7
4Strong Arm Roofing904.7★ (46)Alliston24/7
5C Plus Roofing904.9★ (573)Markham, 60 km away24/7
6Ainger Group Roofing and Exteriors904.8★ (317)Collingwood, 46 km away24/7
7D.C United Roofing904.8★ (151)Barrie, 32 km away24/7
8Peak Performance Roofing & Exteriors894.6★ (47)Barrie, 6 km away24/7
9Tiltop Roofers - Roof Repairs & Replacement894.8★ (224)Burlington, 50 km away24/7
10Green Leaf Roofing Inc.894.8★ (50)East Gwillimbury, 22 km away24/7

Call an emergency roofer in Alliston now

24/7 hours mean the business says its phone is answered around the clock. Arrival time depends on where the crew is. Ask for an arrival window when you call.

The 50 emergency roofers in Alliston, ranked

24/7 first, then same-day service, then the rest. Each group is in CR Score order on emergency weights. The full ranking of all 568 is on the roofers page.

Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.

  2. #2 RonOvations

    Based in Angus, 19 km away

    91/100CR Score

    Ranked #2 because of its Google rating and availability: 4.9★ from 97 Google reviews, open 24/7.

    • 4.9★ from 97 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    31 Bank St, Angus, ON L3W 0M5
    View profile for RonOvations(705) 996-6622

  5. #5 C Plus Roofing

    Based in Markham, 60 km away

    90/100CR Score

    Ranked #5 because of its Google rating and availability: 4.9★ from 573 Google reviews, open 24/7.

    • 4.9★ from 573 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    66 Norbury Dr, Markham, ON L3S 3V2
    View profile for C Plus Roofing(416) 917-9622

  13. #13 Luso Roofing & Contracting Inc. | North York | Roof Ice Dam Removal | Roof Snow Removal | Roof Leak Repair

    Based in North York, 59 km away

    88/100CR Score

    Ranked #13 because of its Google rating and availability: 4.9★ from 212 Google reviews, open 24/7.

    • 4.9★ from 212 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    41 Arrowsmith Ave, North York, ON M6M 2W9
    View profile for Luso Roofing & Contracting Inc. | North York | Roof Ice Dam Removal | Roof Snow Removal | Roof Leak Repair(647) 866-6213

  22. #22 BNS Roofing

    Based in North York, 61 km away

    87/100CR Score

    Ranked #22 because of its Google rating and availability: 4.9★ from 135 Google reviews, open 24/7.

    • 4.9★ from 135 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1202 York Mills Rd, North York, ON M3A 1Y1
    View profile for BNS Roofing(647) 767-1447

  23. #23 Roofing Monkeys

    Based in Toronto, 63 km away

    87/100CR Score

    Ranked #23 because of its Google rating and availability: 4.9★ from 143 Google reviews, open 24/7.

    • 4.9★ from 143 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1224 Dupont St, Toronto, ON M6H 2A4, Toronto, ON M6G 1M2
    View profile for Roofing Monkeys(647) 916-9562

Top 50 of 568 roofers by emergency score

#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile.

roofers in Alliston, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Evergreen Roofing864.9★ (58)50 km
27Local Roofing Services865.0★ (68)60 km
28Taminka Metal Roofing865.0★ (625)60 km
29D'Angelo and Sons | Eavestrough and Roofing Vaughan864.9★ (33)42 km
30ROOF FOR LIFE INC.864.8★ (82)58 km
31Outstanding roofing864.9★ (80)64 km
32Roof.to864.9★ (49)53 km
33Home Star Roofing LTD854.9★ (76)64 km
34Swan Roofing Services854.8★ (39)51 km
35Sasquatch Roofing855.0★ (12)32 km
36Marco's Roofing854.8★ (58)60 km
37Stroud’s Gutter Medic854.7★ (14)19 km
38Alba Tech Roofing854.9★ (51)63 km
39Armour Shield Roofing GTA854.9★ (48)61 km
40Trevor's Roof Repairs854.9★ (51)10 km
41Luso Roofing & Contracting Inc | Toronto854.9★ (51)64 km
42TRW Roofworx Inc855.0★ (18)43 km
43HomeVision Roofing & Siding855.0★ (243)63 km
44911 Roofer844.3★ (15)31 km
45RENO BUILDING CANADA INC., Newmarket Branch1844.9★ (11)35 km
46Divine roofing inc845.0★ (43)53 km
47Innovative Roofing Systems845.0★ (31)59 km
48YS Roofing844.8★ (40)59 km
49Genesis Roofing & Contracting844.5★ (78)62 km
50Certified Roof Repairs844.7★ (45)61 km

How we ranked emergency roofers in Alliston

Emergency lists move 10 points of the CR Score from reputation to availability: 25% and 20%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 roofers are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.

Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed from
Reputation25%Bayesian-adjusted Google star rating
Credentials15%Active state license 0.6, bond 0.2, workers’ comp 0.2
Review volume10%log10(reviews + 1) against the list maximum
Recency10%Share of reviews from the last 12 months
Availability20%Weekly open hours, Saturday, Sunday, 24/7 or same-day
Trade focus10%Google main category 1.0, business name 0.7, additional category 0.5
Proximity5%1.0 when based in the city, falling to 0 at the trade’s radius
Completeness5%Website, photos, description, hours, claimed profile (0.2 each)

Emergency roofers in Alliston: questions

Which roofers in Alliston are open 24/7?

25 on this list post 24/7 hours, including Ainger Group Roofing and Exteriors, RonOvations, JN Roofing and Contracting, Strong Arm Roofing and C Plus Roofing.

Who is ranked #1 for emergency roofing in Alliston, ON?

Ainger Group Roofing and Exteriors is #1, with a CR Score of 93 out of 100 on emergency weights.

How are emergency roofers in Alliston ranked?

Emergency lists move 10 points of the CR Score from reputation to availability: 25% and 20%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 roofers are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.

What should I do before the roofer arrives?

Active leak after a storm: move valuables, catch water and stay off the roof. Report storm damage to your insurer.

How many emergency roofers here list a phone number?

25 of the 25 businesses ranked in full list a phone number. Tap Call to dial it.

Update log for Alliston

  1. October 2026: CR Scores recalculated for 568 roofers serving Alliston.
  2. October 2026: 3 duplicate listings merged.

More emergency and roofing pages