The Best Insulation Contractors in Grandville, MI

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1Premier Roofing & Exteriors★ 5.00 on this job36 jobs reviewedusually $12,000–14,000iHow Job match is calculatedBuilt only from reviews Google tagged “Roof damage repair”:Stars on this job 55%5.00★Number of such jobs 25%36Overall Experts Score 20%89Job match= 96Stars 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.96

2The Roof Dr.★ 5.00 on this job14 jobs reviewedusually $1–2,000iHow Job match is calculatedBuilt only from reviews Google tagged “Roof damage repair”:Stars on this job 55%5.00★Number of such jobs 25%14Overall Experts Score 20%85Job match= 88Stars 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.88

Job match = this company’s ★ on reviews Google tagged “Roof damage repair” (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 roof damage repair

DDonna7 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 month ago★★★★★

The Roof Dr.

We had great work done by The Roof Dr. at our residence. The first was a roof leak on the 3 season porch. It doesn't have a shingled roof but has panels across the top with seams. Workers came within a couple days of my calling and repaired it very efficiently and inexpensively. Six weeks later we had the shingled… Read full review

Paid $5,000–10,000Great priceRoof repair for storm & wind damageRoof inspectionRoof repair

WWooyoung2 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★★★★★

Premier Roofing & Exteriors

Outstanding service—responsive, thorough, and very professional. The repair work was high quality, and I was provided with clear explanations and helpful info throughout the process. Would definitely use again and recommend to others.

Reasonable priceRoof inspectionRoof damage repair

CCoPaCee12 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. · 3 months ago★★★★★

The Roof Dr.

From our initial meeting through the completion of work done, Roof Dr. was the epitome of professionalism, work ethic, and community. We appreciate your efforts, Matt, to help us choose the proper roofing for our home with no "sales pitch" but ensuring we were aware of everything to consider before deciding on… Read full review

Paid $20,000–25,000Reasonable priceRoof installationRoof damage repair

MMaryLocal Guide · 13 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.

The Roof Dr. provided beyond expectation service. I had a leak that needed to be looked at. Mike took the time to check other areas of my attic while he was up there because I’ve had small leaks over the years and I was curious what he saw. He found daylight in a spot that had leaked before but previous roofers told… Read full review

Paid $1–2,000Reasonable priceGutter repairsRoof damage repair

JJake5 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.

Connected with Zach through a mutual friend, within 2 hours of me reaching out to Zach, he had his team at my house cleaning off the roof with snow and ice! Great team and would recommend Roof Dr to anyone in West Mi!

Paid $1–2,000Great priceRoof repairRoof damage repair

LLinda12 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. · 11 months ago★★★★★

Premier Roofing & Exteriors

Sales-Jared, project manager-Clay, and workers, all were awesome! They were really nice and with great attention to detail before during and after. Their service and pleasant professional manner was impressive and appreciated. I highly recommend them!

Reasonable priceGutter installationRoof inspectionRoof repair

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 Grandville, MI at a glance

How the 10 insulation contractors we rated in Grandville, MI 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.