> Markdown version of https://sunnyvaletoprated.com/insulation for AI agents. You are welcome here, and welcome back anytime. What an agent can do: https://sunnyvaletoprated.com/agents . Leave a note for the team: https://sunnyvaletoprated.com/agents/guestbook.md # Best Insulation in Sunnyvale, CA - SunnyvaleTopRated.com [SunnyvaleTopRated.com](/) Proudly serving **Mountain View, Cupertino, Los Altos, Santa Clara, Palo Alto, Milpitas** and the greater Sunnyvale area. **Made for The Golden State.** [SunnyvaleTopRated](/) / Insulation # Best insulation companies in Sunnyvale, CA Verified Sunnyvale insulation companies for attic insulation, spray foam, and energy assessments - serving Mountain View, Cupertino, Los Altos, Santa Clara, Palo Alto, Milpitas and beyond. Rankings updated October 2026 from Google ratings and review volume - not paid placement Maya, the Top Rated AI concierge Maya is on now ## Have Maya call you. Pick your trade and Maya texts you from (813) 454-0813. Reply YES and the call comes in about a minute: you play the customer and hear how an AI answers the front desk for a Sunnyvale business like yours. It is a demo, and it also covers After Hours AI, the service behind these agents. Talk with Maya now [or text her at (813) 454-0813](sms:+18134540813) Your name Mobile Your industry Choose your industry Appliance Repair Carpet & Upholstery Cleaning Chimney & Fireplace Commercial & Janitorial Cleaning Concrete & Masonry Decks & Patios Drywall Electrical EV Charger Installation Fencing Flooring Foundation & Sinkhole Repair Garage Door Services Generator Installation Gutters Handyman Services Home Security & Alarms House Cleaning & Maid Service HVAC & Air Conditioning Insulation Junk Removal & Hauling Kitchen & Bath Remodeling Landscaping & Lawn Care Locksmith & Security Moving Companies Painting Paving & Asphalt Pest Control & Termites Plumbing Pond & Lake Restoration Pool Services Pressure Washing Roofing Screen Enclosures & Lanai Septic Services Siding Solar Installation Tree Service Water Damage & Mold Wildlife & Animal Removal Window Cleaning Windows & Doors Acupuncture Botox & Fillers Chiropractic Compounding Pharmacy Cryotherapy & Recovery Day Spas Dentists & Dental Care Float & Salt Therapy Functional Medicine Hair Restoration Hormone Therapy Hospice & Palliative Care IV Therapy & Infusions Massage Therapy Med Spas Med Spas & Aesthetics Medical Weight Loss Peptide Therapy Physical Therapy Primary & Family Care Regenerative Medicine Skin & Laser Treatments Veterinarians & Animal Hospitals Wellness Centers Women's Health Auto Body & Collision Auto Detailing Auto Repair & Mechanics Car Dealerships Car Washes Driving Schools Gas Stations Towing Truck Stops & Travel Centers Financial Advisors Funeral Homes Home Inspection IT & Technology Consultants Law Firms Legal Title & Escrow Companies Barbershops & Barbers Boutique Hotels & Inns Bubble Tea & Boba Shops Cannabis Dispensaries Florists & Flower Delivery Food Trucks Hair Salons & Stylists Restaurants Retail & Specialty Stores Smoke Shops Sporting Goods Apartments Boxing Gyms Daycare & Preschool Dog Boarding Gyms & Fitness Jiu-Jitsu & MMA Gyms Martial Arts Party Rentals Self-Storage Tutoring I agree that Top Rated may text and call me at this number, including with an automated or AI voice, about my request. Consent is not required to buy anything. Reply STOP to opt out. Have Maya call me To opt in here, pick your industry, enter your mobile number and tick the consent box above. Top Rated Cities and our assistant Maya may then text and call you about your request, including with an automated or AI voice. Consent is not a condition of any purchase. We do not share your mobile information with third parties or affiliates for marketing. Message frequency varies. Message and data rates may apply. Reply STOP to cancel, HELP for help. See our [privacy policy](https://topratedcities.com/privacy). ## How to pick an insulation company in Sunnyvale The right insulation contractor measures your current R-value, quotes the actual improvement, and is honest about payback. In Florida, attic insulation is one of the highest-return AC upgrades. In the heart of Silicon Valley, Sunnyvale's modest-looking ranch homes are worth millions - and their owners keep them dialed in. When you compare insulation companies in Sunnyvale, ask every one of them the same three questions: are you licensed and insured for this exact work, who is actually showing up (your crew or a sub), and what does the warranty cover in writing. Searching for insulation companies near me in Sunnyvale? Everyone ranked below serves Sunnyvale and the surrounding neighborhoods, including Mountain View, Cupertino, Los Altos, Santa Clara, Palo Alto, Milpitas. Check the address and service area on a listing before you call, because the closest one is not always the one a search engine puts first. How we rank these Sunnyvale businesses Today this order comes from public Google ratings and review volume, and nothing else. - **A quality floor.** At least a 4.0 rating and 15 or more reviews to be listed at all. - **Confidence, not just stars.** A thin rating gets pulled toward the typical rating for its own category, in proportion to how few reviews back it up; a well-reviewed rating is trusted almost entirely as is. A 4.9 from 7 reviews is a weaker claim than a 4.5 from 890, and the order says so. - **Recent counts for more.** A five star review from four years ago is not evidence about the crew working today. - **One customer, one voice,** and a burst of reviews in a single day counts for less than the same reviews earned over a month. - **Local means local.** A business has to actually serve Sunnyvale to be listed here. We measure the distance from the business to the city and drop the ones that are really in another market, which is why you will not see a clinic an hour away sitting above the one down the road. - **The ranked order is not for sale.** No business can pay to move up in the numbered list. Every position in it is earned on public ratings and review volume and nothing else. - **Featured is a labelled spotlight, not a rank.** The starred card above the rankings is reserved for businesses that have recently joined Top Rated. A new client can be excellent and still have a short review history, and the numbers alone would bury them for months, so the spotlight gives them visibility while that history builds. It carries no position number, it never moves anyone in the numbered list below it, and it is clearly marked every time it appears. We also rotate it: promotions and seasonal events cycle different clients through the slot, so it is a turn in the spotlight rather than a permanent purchase. **What is changing.** We are adding a second signal: reviews left here by customers whose job we can actually trace. It is built and published below so you can see it before it counts, and it is not part of the order yet. A review will count more when we can prove the job happened, not because it was left on our site. How much each kind of review counts - 1.6x**Verified job** A Top Rated review from a customer whose job we can trace: we brokered the lead, the work was booked, and the review came after the job. - 1.2x**Verified account** A Top Rated review from a real, signed-in account that we cannot tie to a specific job. - 1x**Google** A public Google review. This is the baseline and it is not discounted. - 0x**Unverified** Anything we cannot stand behind. Shown if we show it, counts for nothing. Still curious? [The full methodology](/methodology/) and [the FAQ](/faq/). ## The full Sunnyvale ranking Show independents only 1 [Ideal Attic Insulation Independent · Locally Owned](/biz/ideal-attic-insulation/) ★★★★★ 5 · 58 Google reviews · 1050 E Santa Clara St [View profile](/biz/ideal-attic-insulation/) [Call](tel:+14083669683) [Website](https://www.idealatticinsulationinc.com/?utm_source=topratedcities&utm_medium=referral) Unclaimed - is this yours? 2 [Premier Roofing & Retro-Fit Independent · Locally Owned](/biz/premier-roofing-retro-fit/) ★★★★★ 5 · 50 Google reviews · 3000 Scott Blvd #101 [View profile](/biz/premier-roofing-retro-fit/) [Call](tel:+14088729803) [Website](https://www.premierroofingretrofit.com/?utm_source=topratedcities&utm_medium=referral) Unclaimed - is this yours? 3 [Vortex Insulation Independent · Locally Owned](/biz/vortex-insulation/) ★★★★★ 5 · 47 Google reviews · 1273 Industrial Pkwy W #530 [View profile](/biz/vortex-insulation/) [Call](tel:+15109635713) [Website](https://www.vortexinsulation.com/?utm_source=topratedcities&utm_medium=referral) Unclaimed - is this yours? 4 [Delta Spray Foam Insulation Independent · Locally Owned](/biz/delta-spray-foam-insulation/) ★★★★★ 5 · 34 Google reviews · 472 Castro St [View profile](/biz/delta-spray-foam-insulation/) [Call](tel:+16504053454) [Website](https://insulationmountainviewca.com/?utm_source=topratedcities&utm_medium=referral) Unclaimed - is this yours? 5 [GADI Construction Independent · Locally Owned](/biz/gadi-construction/) ★★★★½ 4.9 · 154 Google reviews · 3205 Cabrillo Ave [View profile](/biz/gadi-construction/) [Call](tel:+14088891000) [Website](https://www.gadiconstruction.com/?utm_source=topratedcities&utm_medium=referral) Unclaimed - is this yours? 6 [Attic Bros Independent · Locally Owned](/biz/attic-bros/) ★★★★★ 5 · 25 Google reviews · 1150 Scott Blvd [View profile](/biz/attic-bros/) [Call](tel:+14089091699) [Website](http://attic-bros.com/?utm_source=topratedcities&utm_medium=referral) Unclaimed - is this yours? 7 [Greenshield Insulation Independent · Locally Owned](/biz/greenshield-insulation/) ★★★★★ 5 · 17 Google reviews · 3284 Edward Ave Unit a [View profile](/biz/greenshield-insulation/) [Call](tel:+14082910107) [Website](http://www.greenshieldinsulation.com/?utm_source=topratedcities&utm_medium=referral) Unclaimed - is this yours? 8 [Sanden Insulation Independent · Locally Owned](/biz/sanden-insulation/) ★★★★★ 5 · 15 Google reviews · 162 Mar Monte Ave [View profile](/biz/sanden-insulation/) [Call](tel:+18317082713) [Website](http://sandeninsulation.com/?utm_source=topratedcities&utm_medium=referral) Unclaimed - is this yours? 9 [Attic Bros of Mountain View Independent · Locally Owned](/biz/attic-bros-of-mountain-view/) ★★★★½ 4.9 · 46 Google reviews · 800 W El Camino Real Unit 310 [View profile](/biz/attic-bros-of-mountain-view/) [Call](tel:+16509667366) Unclaimed - is this yours? 10 [Attic Bros of Palo Alto Independent · Locally Owned](/biz/attic-bros-of-palo-alto/) ★★★★½ 4.9 · 39 Google reviews · 3000 El Camino Real #2 [View profile](/biz/attic-bros-of-palo-alto/) [Call](tel:+16509249042) [Website](http://attic-bros.com/?utm_source=topratedcities&utm_medium=referral) Unclaimed - is this yours? 11 [Lifetime Roofing & Renovation, Inc.](/biz/lifetime-roofing-renovation-inc/) ★★★★½ 4.8 · 161 Google reviews · 333 Cobalt Way Unit 103 #103 [View profile](/biz/lifetime-roofing-renovation-inc/) [Call](tel:+14086852177) [Website](http://lifetimeroofingrenovation.com/?utm_source=topratedcities&utm_medium=referral) Unclaimed - is this yours? 12 [Sigura Construction, Inc. Independent · Locally Owned](/biz/sigura-construction-inc/) ★★★★½ 4.8 · 46 Google reviews · 1290 Reamwood Ave Ste A [View profile](/biz/sigura-construction-inc/) [Call](tel:+14084921379) [Website](https://siguraconstruction.com/?utm_source=topratedcities&utm_medium=referral) Unclaimed - is this yours? 13 [Johnson's Insulation Independent · Locally Owned](/biz/johnson-s-insulation/) ★★★★½ 4.8 · 41 Google reviews · 1721 Broadway suit #201 [View profile](/biz/johnson-s-insulation/) [Call](tel:+15106600455) [Website](https://www.johnsonsinsulation.green/?utm_source=topratedcities&utm_medium=referral) Unclaimed - is this yours? 14 [Eagle Insulation Inc.](/biz/eagle-insulation-inc/) ★★★★½ 4.8 · 31 Google reviews · 689 Hammond Way [View profile](/biz/eagle-insulation-inc/) [Call](tel:+14083170195) [Website](https://insulationmilpitasca.com/?utm_source=topratedcities&utm_medium=referral) Unclaimed - is this yours? 15 [Level Up Home Builders Independent · Locally Owned](/biz/level-up-home-builders/) ★★★★½ 4.7 · 37 Google reviews · 569 Clyde Ave #550 [View profile](/biz/level-up-home-builders/) [Call](tel:+16509102320) [Website](http://leveluphomebuilders.com/?utm_source=topratedcities&utm_medium=referral) Unclaimed - is this yours? 16 [Reliance Construction Independent · Locally Owned](/biz/reliance-construction/) ★★★★½ 4.7 · 47 Google reviews · 1080 Wentworth St [View profile](/biz/reliance-construction/) [Call](tel:+16503479100) [Website](http://www.reliance-const.com/?utm_source=topratedcities&utm_medium=referral) Unclaimed - is this yours? 17 [Steady Craftsman CSteady Craftsman CA Independent · Locally Owned](/biz/steady-craftsman-csteady-craftsman-ca/) ★★★★½ 4.5 · 81 Google reviews · 662 Princeton Dr [View profile](/biz/steady-craftsman-csteady-craftsman-ca/) [Call](tel:+12092991465) [Website](https://steadycraftsman.com/?utm_source=topratedcities&utm_medium=referral) Unclaimed - is this yours? 18 [CONTRACTORS' WAREHOUSE Independent · Locally Owned](/biz/contractors-warehouse/) ★★★★ 4 · 216 Google reviews · 2800 Kifer Rd [View profile](/biz/contractors-warehouse/) [Call](tel:+14083300934) [Website](http://contractorswarehouse.com/?utm_source=topratedcities&utm_medium=referral) Unclaimed - is this yours? Ratings and review counts sourced from Google. Businesses shown are the highest-rated in Sunnyvale; owners can claim and verify their listing free. ## Insulation in Sunnyvale: common questions ### Who are the best insulation companies in Sunnyvale? Based on Google ratings and review volume as of October 2026, the top rated insulation companies in Sunnyvale are Ideal Attic Insulation, Premier Roofing & Retro-Fit, Vortex Insulation. See the live ranked list, ratings, and contact details on this page. ### How do I find insulation companies near me in Sunnyvale? Every company ranked on this page serves Sunnyvale and the surrounding area, including Mountain View, Cupertino, Los Altos, Santa Clara, Palo Alto, Milpitas. Open any listing for its address, phone number and service area, then call the two or three closest to you. Distance is worth checking yourself: the nearest insulation company is not automatically the best one, so this page ranks on rating and review volume first and leaves proximity to you. ### How do I choose an insulation company in Sunnyvale? The right insulation contractor measures your current R-value, quotes the actual improvement, and is honest about payback. In Florida, attic insulation is one of the highest-return AC upgrades. ## Are you a top-rated Sunnyvale pro? Listings and claims are free. Early claimants receive Premium at no charge, a $297 value, after confirmation. No purchase is required. [Claim your free listing](#) Prefer to talk? Call or text the Top Rated directory on [(813) 454-0813](tel:+18134540813). This is our number, not the number of any business listed here. Related in Sunnyvale: [Drywall](/drywall/) · [Wildlife & Animal Removal](/wildlife-removal/) · [Window Cleaning](/window-cleaning/) · [Decks & Patios](/decks/)