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ContractorsRanked

Best Insulation Contractors in Lancaster, PA (2026)

16 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Lancaster: Zimmerman's Roofing, CR Score 86/100; 4.9★ from 556 Google reviews; open 24/7.

  2. 8

    Best for emergencies (open 24/7): Schober Repair Services, posts 24/7 hours; ranked #8 of 16.

  3. 2

    Most-reviewed: King Conservation Group, 140 Google reviews at 5.0★, the most of 16 ranked after Zimmerman's Roofing; ranked #2.

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

16 Lancaster insulation contractors are ranked here by CR Score, from 8 published factors. 2 are open 24/7, 7 open Saturdays and 2 open Sundays, based on posted hours. The median Google rating is 4.5★ across 16 rated businesses.

Top 10 insulation contractors in Lancaster at a glance

Top 10 insulation contractors in Lancaster at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Zimmerman's Roofing864.9★ (556)New Holland, 12 mi away24/7Overall
2King Conservation Group835.0★ (140)Lancaster—Most reviews
3Irex Services LLC814.5★ (4)Lancaster——
4Robert Weaver Masonry795.0★ (5)Willow Street, 10 mi away——
5Keystone Spray Foam764.8★ (20)Red Lion, 17 mi awaySat—
6Lantz Insulation755.0★ (14)Leola, 7 mi away——
7Pro Desk at The Home Depot754.2★ (6)LancasterSat · Sun · Evenings—
8Schober Repair Services754.8★ (32)Mount Joy, 12 mi away24/7Emergencies
9Keener Insulating & Supply Inc743.7★ (17)Lancaster——
10Therm-All733.3★ (3)Lancaster——

The 16 best insulation contractors in Lancaster, ranked

Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.

  1. Ranked #1 in Lancaster

    #1 Zimmerman's Roofing

    Based in New Holland, 12 mi away

    86/100CR Score

    Ranked #1 because of its Google rating and review volume: 4.9★ from 556 Google reviews, the most Google reviews on this list (556).

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 4.9★ from 556 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    325B W Main St, New Holland, PA 17557
    View profile for Zimmerman's Roofing(717) 354-3737

  2. #2 King Conservation Group

    Based in Lancaster

    83/100CR Score

    Ranked #2 because of its Google rating and trade focus: 5.0★ from 140 Google reviews, listed on Google as “Insulation contractor”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 5.0★ from 140 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    667 Hartman Station Rd Suite D, Lancaster, PA 17601
    View profile for King Conservation Group(717) 205-3610

  3. #3 Irex Services LLC

    Based in Lancaster

    81/100CR Score

    Ranked #3 because of its Google rating and trade focus: 4.5★ from 4 Google reviews, listed on Google as “Insulation contractor”.

    Based on 5 of 8 factors; credentials, recency and availability not yet collected.

    • 4.5★ from 4 Google reviews
    Address
    120 N Lime St, Lancaster, PA 17602
    View profile for Irex Services LLC(717) 397-3633

  4. #4 Robert Weaver Masonry

    Based in Willow Street, 10 mi away

    79/100CR Score

    Ranked #4 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Insulation contractor”.

    Based on 5 of 8 factors; credentials, recency and availability not yet collected.

    • 5.0★ from 5 Google reviews
    Address
    44 Truce Rd, New Providence, PA 17560
    View profile for Robert Weaver Masonry(717) 786-1900

  5. #5 Keystone Spray Foam

    Based in Red Lion, 17 mi away

    76/100CR Score

    Ranked #5 because of its Google rating and trade focus: 4.8★ from 20 Google reviews, listed on Google as “Insulation contractor”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 4.8★ from 20 Google reviews
    Hours
    Mon–Sat 9 AM–5 PM · Sun closed
    Address
    8 Azalea Dr, Windsor, PA 17366
    View profile for Keystone Spray Foam(717) 876-8854

  6. #6 Lantz Insulation

    Based in Leola, 7 mi away

    75/100CR Score

    Ranked #6 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “Insulation contractor”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 5.0★ from 14 Google reviews
    Hours
    Mon–Fri 7 AM–5 PM · Sat–Sun closed
    Address
    306 Newport Rd, Leola, PA 17540
    View profile for Lantz Insulation(717) 656-7373

  7. #7 Pro Desk at The Home Depot

    Based in Lancaster

    75/100CR Score

    Ranked #7 because of its Google rating and availability: 4.2★ from 6 Google reviews, open 7 days a week.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 4.2★ from 6 Google reviews
    Hours
    Mon–Sat 6 AM–10 PM · Sun 8 AM–8 PM
    Address
    1700-D Fruitville Pike, Lancaster, PA 17601
    View profile for Pro Desk at The Home Depot(717) 239-3904

  8. #8 Schober Repair Services

    Based in Mount Joy, 12 mi away

    75/100CR Score

    Ranked #8 because of its Google rating and availability: 4.8★ from 32 Google reviews, open 24/7.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 4.8★ from 32 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1 E Main St #241, Mount Joy, PA 17552
    View profile for Schober Repair Services(717) 288-8764

  10. #10 Therm-All

    Based in Lancaster

    73/100CR Score

    Ranked #10 because of its Google rating and trade focus: 3.3★ from 3 Google reviews, listed on Google as “Insulation contractor”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 3.3★ from 3 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    2317 Norman Rd, Lancaster, PA 17601
    View profile for Therm-All(855) 836-0650

  15. #15 Liberty Insulation

    Based in York, 23 mi away

    68/100CR Score

    Ranked #15 because of its Google rating and trade focus: 3.4★ from 21 Google reviews, listed on Google as “Insulation contractor”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 3.4★ from 21 Google reviews
    Hours
    Mon–Fri 7 AM–4:30 PM · Sat–Sun closed
    Address
    3645 Board Rd, York, PA 17406
    View profile for Liberty Insulation(717) 767-9082

  16. #16 Happy Planet Home Solutions

    Based in Coatesville, 25 mi away

    65/100CR Score

    Ranked #16 because of its Google rating and trade focus: 4.0★ from 5 Google reviews, listed on Google as “Insulation contractor”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 4.0★ from 5 Google reviews
    Hours
    Mon–Fri 8:30 AM–7 PM · Sat–Sun closed
    Address
    55 Horizon Dr, Coatesville, PA 19320
    View profile for Happy Planet Home Solutions(610) 350-8822

Also serving Lancaster

20 more insulation contractors within 25 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.

Unranked insulation contractors serving Lancaster
BusinessGoogle ratingDistance
Anderson Roofing and Exteriors LLC4.9★ (85)In Lancaster
Armor Roofing and Renovations, LLC5.0★ (84)In Lancaster
Aspen Home Improvements4.7★ (1,824)In Lancaster
Chase Brother Construction5.0★ (40)In Lancaster
Core Value Duct Cleaning & Restoration5.0★ (69)In Lancaster
Fernandez Home Solutions4.9★ (27)In Lancaster
HAJOCA4.7★ (78)In Lancaster
Helm Construction Company4.8★ (219)In Lancaster
Keystone Custom Homes4.2★ (476)In Lancaster
Lezzer Lumber - Lancaster4.2★ (80)In Lancaster
McLennan Contracting, Inc5.0★ (70)In Lancaster
Moser Roofing Solutions4.9★ (221)In Lancaster
Prime Home Contracting5.0★ (30)In Lancaster
Quarry View Building Group4.7★ (27)In Lancaster
Ranck Plumbing, Heating, AC & Excavation4.8★ (930)In Lancaster
Scenic Ridge Company4.5★ (22)In Lancaster
Strasburg Masonry Supply4.6★ (51)In Lancaster
Weinstein Supply4.7★ (27)In Lancaster
Winter's Heating & Air Conditioning4.9★ (736)In Lancaster
Zen Windows Central PA4.9★ (127)In Lancaster

How much do insulation contractors cost in Lancaster?

National price ranges in USD, not adjusted for Lancaster. Each row names its basis and the month we checked it.

How much do insulation contractors cost in Lancaster?
JobLowTypicalHighBasisChecked
Attic insulation$1,700$2,100$2,500Per attic: typical range of customer-reported jobs (about $1 to $3 per sq ft). US national rangeOctober 2026

How we ranked Lancaster insulation contractors

We scored 16 Lancaster insulation contractors on 8 factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. Unknown factors are left out of the score, not counted as zero. Scores last refreshed October 22, 2026.

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 fromIn Lancaster data
Reputation35%Bayesian-adjusted Google star ratingMeasured
Credentials15%Active state license 0.6, bond 0.2, workers’ comp 0.2Not yet collected
Review volume10%log10(reviews + 1) against the list maximumMeasured
Recency10%Share of reviews from the last 12 monthsNot yet collected
Availability10%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%Google main category 1.0, business name 0.7, additional category 0.5Measured
Proximity5%1.0 when based in the city, falling to 0 at the trade’s radiusMeasured
Completeness5%Website, photos, description, hours, claimed profile (0.2 each)Measured

Insulation contractors in Lancaster: frequently asked questions

Who is the best insulation contractor in Lancaster?

By CR Score, the highest-ranked insulation contractor in Lancaster, PA is Zimmerman's Roofing with a CR Score of 86/100. It has 4.9★ from 556 Google reviews. It is open 24/7. King Conservation Group (#2) and Irex Services LLC (#3) follow. We ranked 16 insulation contractors on 8 factors, last updated October 22, 2026.

How many insulation contractors are there in Lancaster?

ContractorsRanked ranks 16 insulation contractors serving Lancaster, PA. 6 of them are based in Lancaster; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.

Which insulation contractors in Lancaster are open 24/7?

2 ranked insulation contractors in Lancaster post 24/7 hours. The highest-ranked are Zimmerman's Roofing (#1) and Schober Repair Services (#8). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which insulation contractors in Lancaster work on weekends?

7 of 16 ranked insulation contractors post Saturday hours and 2 post Sunday hours. The highest-ranked open Saturdays are Zimmerman's Roofing (#1), Keystone Spray Foam (#5) and Pro Desk at The Home Depot (#7). Posted hours are office hours; crews may book weekend jobs separately.

How much does attic insulation cost in Lancaster?

Attic insulation typically costs $1,700 to $2,500, with $2,100 typical (Per attic: typical range of customer-reported jobs (about $1 to $3 per sq ft). US national range). This is a national range, not adjusted for Lancaster. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Lancaster insulation contractors have?

The median Google rating among 16 rated insulation contractors in Lancaster is 4.5★, with a median of 9 reviews. Zimmerman's Roofing has the most, 556 reviews, and ranks #1. We adjust ratings for review count, so a few five-star reviews cannot top the list.

How does ContractorsRanked rank insulation contractors?

Each insulation contractor gets a 0–100 CR Score from 8 published factors, led by reputation (35%), credentials (15%), review volume (10%) and recency (10%). Factors we cannot measure are left out, not scored as zero. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.

Do insulation contractors outside Lancaster count in this ranking?

Yes, if they are within 25 mi of the Lancaster city center, our service radius for insulation contractors. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.

Update log for Lancaster

  1. October 2026: CR Scores recalculated for 16 insulation contractors serving Lancaster.

More insulation contractors and Lancaster pages

Other trades in Lancaster