The Best Insulation Contractors in Michigan

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1Premier Roofing & Exteriors★ 5.00 on this job19 jobs reviewedusually $20,000+iHow Job match is calculatedBuilt only from reviews Google tagged “Skylight installation”:Stars on this job 55%5.00★Number of such jobs 25%19Overall Experts Score 20%89Job match= 95Stars are pulled toward the category average (4.89★) when a company has few tagged jobs, so 3 perfect reviews don’t beat 80 great ones. 4.3★ scores 0, 5.0★ scores full. Volume is compared with the busiest company for this job.95

2The Roof Dr.★ 5.00 on this job5 jobs reviewedusually $8,000–10,000iHow Job match is calculatedBuilt only from reviews Google tagged “Skylight installation”:Stars on this job 55%5.00★Number of such jobs 25%5Overall Experts Score 20%85Job match= 82Stars are pulled toward the category average (4.89★) when a company has few tagged jobs, so 3 perfect reviews don’t beat 80 great ones. 4.3★ scores 0, 5.0★ scores full. Volume is compared with the busiest company for this job.82

3Melvin Belk Roofing★ 4.75 on this job4 jobs reviewediHow Job match is calculatedBuilt only from reviews Google tagged “Skylight installation”:Stars on this job 55%4.75★Number of such jobs 25%4Overall Experts Score 20%92Job match= 75Stars are pulled toward the category average (4.89★) when a company has few tagged jobs, so 3 perfect reviews don’t beat 80 great ones. 4.3★ scores 0, 5.0★ scores full. Volume is compared with the busiest company for this job.75

Job match = this company’s ★ on reviews Google tagged “Skylight installation” (shrunk toward the category average when there are few), how many such jobs it has done, and its overall Experts Score.

What customers said about skylight installation

SStaceyLocal Guide · 43 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 2 months ago★★★★★

The Roof Dr.

We honestly couldn’t have asked for a better experience! From beginning to end, everything was so easy and stress-free. We worked with Matt throughout the process, and he was absolutely wonderful. He was so kind, patient, and helpful, and his communication was amazing. Anytime we had a question, he was quick to… Read full review

Reasonable priceRoof inspectionRoof repairSkylight installation

MMarie2 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 5 months ago★★★★★

Premier Roofing & Exteriors

After the huge hailstorm and significant damage, we were glad to talk with Premier about the options and needs for our home. They replaced our roof, did some gutter repairs and installed skylights(better than the ones we had!). The team doing the work under Clay were very hard-working, efficient and responsive to… Read full review

Paid $20,000+Reasonable priceGutter installationSkylight installationRoof installation

TTAMMY6 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 4 years ago★★★★★

Melvin Belk Roofing

Roof and skylights replaced in one day. Crew was respectful and cleaned up the entire property not leaving anything behind.

Roof installationSkylight installation+ Responsiveness+ Punctuality+ Quality

PPatrick10 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 6 months ago★★★★★

Premier Roofing & Exteriors

Tim Sunberg and his crew did an excellent job! Added sky lights, decking and shingles,all in one day! And with the threat of rain any minute! Thank you Premier Roofing!

Reasonable priceSkylight installationRoof installation

DDanya3 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 8 months ago★★★★★

The Roof Dr.

We’ve had a really great experience with this company. They’re always quick to respond and never make us feel like our concerns are a bother. If we call, they show up, check everything carefully, and do exactly what they say they’re going to do. What we really appreciate is that they take the time to walk us through… Read full review

Paid $8,000–10,000Reasonable priceSkylight installationRoof installationService not listed

LLennyLocal Guide · 157 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · a year ago★★★★★

Premier Roofing & Exteriors

I am the president of our condo association and I would like to say how completely satisfied we are with Premier Roofing. We acquired multiple bids. Not only were they the most thorough in their presentation, they were the lowest bid. The job was done in a timely manner and the attention to detail was outstanding.… Read full review

Reasonable priceGutter installationAttic ventingSkylight installation

Overall ratings

Experts Score 0–100iExperts Score (0–100)Absolute quality first: recency-weighted star average (≈54%), share of 1–2★ reviews (≈24%), customers’ price verdicts (≈14%), owner replies to critical reviews (≈7%); minus up to 10 points each for complaints flagged in Google review highlights and for a real slide in recent ratings. Hover a company’s score on its page for the full breakdown. and a letter grade per factor (A = top 20% of insulation contractors).

#	Company	ScoreiExperts Score (0–100)Absolute quality first: recency-weighted star average (≈54%), share of 1–2★ reviews (≈24%), customers’ price verdicts (≈14%), owner replies to critical reviews (≈7%); minus up to 10 points each for complaints flagged in Google review highlights and for a real slide in recent ratings. Hover a company’s score on its page for the full breakdown.	FactorsiFactor grades, in orderSatisfaction (54%): Recency-weighted star average (2-year half-life), shrunk toward the category mean by review volume; the company’s own lifetime average as the prior; absolute: 4.0★ = 0, 5★ = 100.Reliability (24%): How rarely jobs go badly: share of 1–2★ reviews — 60% the last 24 months (or the 20 newest if fewer), 40% all-time; 0% = 100, 15%+ = 0; the category percentile can only raise it.Craft & service (0%): Google review highlights: Quality, Professionalism, Responsiveness, Punctuality — how rarely reviewers flag them as a negative, per review since highlights began; 0% = 100, 5%+ = 0. Subtracted from the score (up to −10), never averaged in — clean highlights are the norm, not a bonus.Value (14%): Customers’ own price verdicts (Great / Reasonable vs Overpriced) and Value highlights; 65% absolute (all “reasonable” ≈ 80, “great” = 100), the category percentile can only raise it.Momentum (0%): Penalises only a real slide: last-12-month average below lifetime (−0.5★ = 0). Still 4.8★+ over the last year, or steady/improving = 100. Subtracted from the score (up to −10), never averaged in.Replies to reviews (7%): How often the owner publicly replies to reviews under 5★ (1–4★). Needs 3+ such reviews, otherwise not counted; 65% absolute (80%+ replied = 100), the category percentile can only raise it.One letter per factor score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = below 20.	★iGoogle star rating as shown on Google Maps.	Typical billiMedian bill customers of this company reported in their reviews (needs 3+ priced reviews).
1	Michigan Spray Foam InsulationGrandville, MI	A 95iHow the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 69%94+65.1Reliability 31%96+29.5Experts Score= 95Not enough data for value, replies to reviews; its weight is shared by the others.Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.	AA––––	4.93	—
2	Grandville Roofing and SidingGrandville, MI	A 94iHow the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 59%93+54.6Reliability 26%95+24.8Value 15%100+15.2Craft & service penalty97−0.3Experts Score= 94Not enough data for replies to reviews; its weight is shared by the others.Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.	AAAAA–	4.95	$17k
3	Melvin Belk RoofingGrandville, MI	A 92iHow the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 55%91+49.6Reliability 24%88+21.3Value 14%100+14.1Replies to reviews 7%100+7.1Experts Score= 92Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.	AAAAAA	4.89	$7.1k
4	Gutter Helmet Of Michigan and IllinoisGrandville, MI	A 92iHow the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 55%96+52.4Reliability 24%91+22.1Value 14%100+14.1Replies to reviews 7%45+3.2Experts Score= 92Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.	AA–AAC	4.90	—
5	Premier Roofing & ExteriorsGrandville, MI	A 89iHow the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 55%92+50.2Reliability 24%87+21.1Value 14%100+14.1Replies to reviews 7%61+4.3Craft & service penalty95−0.5Experts Score= 89Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.	AAAAAB	4.91	$16k
6	The Roof Dr.Grandville, MI	A 85iHow the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 55%90+49.1Reliability 24%82+19.9Value 14%100+14.1Replies to reviews 7%54+3.8Craft & service penalty79−2.1Experts Score= 85Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.	AABAAC	4.89	$4.1k
7	Michigan Spray Foam InsulationGrandville, MI	A 85iHow the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 69%84+58.2Reliability 31%88+27.1Experts Score= 85Not enough data for value, replies to reviews; its weight is shared by the others.Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.	AA––A–	4.80	—
8	WMGB Home Improvement (Formerly West Michigan Glass Block)Grandville, MI	B 78iHow the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 55%81+44.2Reliability 24%72+17.5Value 14%100+14.1Replies to reviews 7%100+7.1Craft & service penalty86−1.4Momentum penalty62−3.8Experts Score= 78Grade B: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.	ABAABA	4.85	—
9	Koala Insulation of Grand RapidsGrandville, MI	B 78iHow the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 55%82+44.7Reliability 24%73+17.7Value 14%99+14Replies to reviews 7%100+7.1Momentum penalty43−5.7Experts Score= 78Grade B: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.	ABAACA	4.85	—
10	Georgetown Waterproofing IncGrandville, MI	B 60iHow the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 59%68+39.9Reliability 26%57+14.9Value 15%93+14.2Craft & service penalty98−0.2Momentum penalty15−8.5Experts Score= 60Not enough data for replies to reviews; its weight is shared by the others.Grade B: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.	BCAAF–	4.77	—

What jobs cost

What customers paid, from the price Google asks reviewers to report.

Insulation Contractors in Michigan at a glance

How the 10 insulation contractors we rated in Michigan compare, and what customers praise most.

How we grade

Satisfaction (54%) — Recency-weighted star average (2-year half-life), shrunk toward the category mean by review volume; the company’s own lifetime average as the prior; absolute: 4.0★ = 0, 5★ = 100.

Reliability (24%) — How rarely jobs go badly: share of 1–2★ reviews — 60% the last 24 months (or the 20 newest if fewer), 40% all-time; 0% = 100, 15%+ = 0; the category percentile can only raise it.

Craft & service (penalty, up to −10) — Google review highlights: Quality, Professionalism, Responsiveness, Punctuality — how rarely reviewers flag them as a negative, per review since highlights began; 0% = 100, 5%+ = 0. Subtracted from the score (up to −10), never averaged in — clean highlights are the norm, not a bonus.

Value (14%) — Customers’ own price verdicts (Great / Reasonable vs Overpriced) and Value highlights; 65% absolute (all “reasonable” ≈ 80, “great” = 100), the category percentile can only raise it.

Momentum (penalty, up to −10) — Penalises only a real slide: last-12-month average below lifetime (−0.5★ = 0). Still 4.8★+ over the last year, or steady/improving = 100. Subtracted from the score (up to −10), never averaged in.

Replies to reviews (7%) — How often the owner publicly replies to reviews under 5★ (1–4★). Needs 3+ such reviews, otherwise not counted; 65% absolute (80%+ replied = 100), the category percentile can only raise it.