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Best Insulation Contractors in Festus, MO (2026)

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

The short answer

  1. 1

    Best overall in Festus: Buckingham Pest Control, CR Score 59/100; 5.0★ from 278 Google reviews; open Saturdays until 12 PM.

  2. 2

    Most-reviewed: Koala Insulation of St. Louis, 430 Google reviews at 4.9★, the most of 9 ranked; ranked #2.

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

9 Festus insulation contractors are ranked here by CR Score, from ten published factors. 3 open Saturdays, based on posted hours. The median Google rating is 4.9★ across 9 rated businesses.

Top 9 insulation contractors in Festus at a glance

Top 9 insulation contractors in Festus at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Buckingham Pest Control595.0★ (278)Wildwood, 22 mi awaySatOverall
2Koala Insulation of St. Louis584.9★ (430)St. Louis, 21 mi away—Most reviews
3Foam Engineers - Insulation Experts574.9★ (175)Valley Park, 23 mi awaySat—
4Goley, Inc.564.9★ (240)Columbia, 22 mi away——
5Spray Foam Insulation St. Louis534.9★ (38)Affton, 21 mi away——
6Extreme Spray Foam of St. Louis525.0★ (25)Saint Peters, 22 mi away——
7Con-Tech Insulation LLC483.5★ (19)Eureka, 24 mi away——
8Gateway Home Services484.8★ (131)St. Louis, 23 mi away——
9Greenmark Home Performance474.4★ (14)St. Louis, 17 mi awaySat · Evenings—

The 9 best insulation contractors in Festus, ranked

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

Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.

  4. #4 Goley, Inc.

    Based in Columbia, 22 mi away

    56/100CR Score

    Ranked #4 because of its Google rating and trade focus: 4.9★ from 240 Google reviews, listed on Google as “Insulation contractor”.

    • 4.9★ from 240 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    1707 Bluffview Dr, Dupo, IL 62239
    View profile for Goley, Inc.(618) 286-3355

  9. #9 Greenmark Home Performance

    Based in St. Louis, 17 mi away

    47/100CR Score

    Ranked #9 because of its Google rating and trade focus: 4.4★ from 14 Google reviews, listed on Google as “Window installation service”.

    • 4.4★ from 14 Google reviews
    Hours
    Mon–Fri 8 AM–7 PM · Sat 8 AM–2 PM · Sun closed
    Address
    4324 Meadowgreen Trails Dr, St. Louis, MO 63129
    View profile for Greenmark Home Performance(314) 845-9144

How much do insulation contractors cost in Festus?

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

How much do insulation contractors cost in Festus?
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 Festus insulation contractors

We scored 9 Festus insulation contractors on ten 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. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, 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 Festus data
Reputation25%Google star rating, adjusted for how many reviews back itMeasured
Credentials15%Active state license, bond and workers’ comp on fileNot yet collected
Review volume10%Number of Google reviews, compared with the most-reviewed business on the listMeasured
Recency5%Share of reviews from the last 12 monthsNot yet collected
Availability5%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%How clearly the business does this trade (its Google category and name)Measured
Proximity5%Based in the city scores highest, less the farther away it isMeasured
Claimed profile10%The business has claimed its ContractorsRanked profile (free or paid earn the same)Measured
Partnered5%The business links to ContractorsRanked from its own website with our badge, checked periodicallyMeasured
ContractorsRanked reviews10%Verified customer reviews collected by ContractorsRanked: their rating and how many there areMeasured

Insulation contractors in Festus: frequently asked questions

Who is the best insulation contractor in Festus?

By CR Score, the highest-ranked insulation contractor in Festus, MO is Buckingham Pest Control with a CR Score of 59/100. It has 5.0★ from 278 Google reviews. It is open Saturdays until 12 PM. Koala Insulation of St. Louis (#2) and Foam Engineers - Insulation Experts (#3) follow. We ranked 9 insulation contractors on ten factors, last updated October 22, 2026.

Which insulation contractors in Festus work on weekends?

3 of 9 ranked insulation contractors post Saturday hours. The highest-ranked open Saturdays are Buckingham Pest Control (#1), Foam Engineers - Insulation Experts (#3) and Greenmark Home Performance (#9). Posted hours are office hours; crews may book weekend jobs separately.

How much does attic insulation cost in Festus?

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 Festus. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Festus insulation contractors have?

The median Google rating among 9 rated insulation contractors in Festus is 4.9★, with a median of 131 reviews. Koala Insulation of St. Louis has the most, 430 reviews, and ranks #2. 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 ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.

Do insulation contractors outside Festus count in this ranking?

Yes, if they are within 25 mi of the Festus 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.

Can insulation contractors pay to rank higher on ContractorsRanked?

No. The CR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured businesses may appear above the list, labelled Featured and showing their honest rank.

Update log for Festus

  1. October 2026: CR Scores recalculated for 9 insulation contractors serving Festus.

More insulation contractors and Festus pages

Other trades in Festus