Houzz
ProvenExpert
Tripadvisor
Chamber of Commerce
Bark
Manta★★★★★
"They photographed rodent damage in the old insulation that we had no idea about, and priced the exclusion work separately so we could decide."
365-Day Done Right PromiseLearn More
Nationwide network of local experts
Insulation Design, Installation
Insulation Design, Installation
& Repair, Nationwide.
Priced Upfront, Built to Last.
Plan it with a local expert, priced upfront, installed by trained crews, and backed nationally. No pressure, no surprises on the bill.
525+ Happy Customers
4.8/5 Rating
Free Estimate on SiteCalls Answered by a Live Person, 24/7Background-Checked TechniciansProudly serving local communities 10+ years
What we do
Expert Insulation Repair and Installation Services
Every job on this list is handled by trained, background-checked technicians working to one national standard, priced upfront from a free estimate.
Attic Insulation
Air-seal the attic floor first, then blow or lay insulation to the code depth for your climate zone. The depth ruler gets photographed before the hatch closes.
Learn More →
Free Insulation Estimates
A technician measures what you have, tells you the depth you need in inches, and prices the whole job in writing before a bag is opened.
Learn More →
Crawl Space Encapsulation & Vapor Barrier
A sealed liner up the foundation walls, taped seams, sealed vents and a dehumidifier sized for the space. Cold floors and musty air stop at the source.
Learn More →
Spray Foam Insulation
Open- or closed-cell foam on rim joists, roof decks and garage ceilings. The one insulation that air-seals and insulates in a single pass.
Learn More →Why us
Why Choose Topside?
The same four answers in every market we serve.
One Standard, Every Location
Every Topside team works to the same written standard, the same pricing practice, and the same checklist. The town changes; the job does not.
You Approve the Price First
A free estimate, itemized and in writing, before a tool comes out of the truck. No hourly meter, no discovering the real number at the end.
Licensed, Insured, Background-Checked
Uniformed technicians, licensed for the work in their own state, insured, and background-checked before they ever knock on a door.
Backed by a 365-Day Written Promise
If the work is not right, we come back and make it right. That is the whole promise, and it is on paper, not just on the website.
Our code: H.A.V.E.N.
The Topside Way
The standard every Topside team is held to, on every job, in every town.
Have it in writing
flat price, written scope, written warranty, before anyone starts
Arrive on schedule
a real window, a named tech, a text when they are on the way
Verified crews
licensed, insured, background-checked, license number on the page
Evidence on every job
photos and readings of what we actually found
No surprises
no door upsell, no scope creep, no "while we are in here"
Our Promise, In Writing
The Haven Standard delivered by Topside, a proud Haven company.
365-Day Written Promise“9,000+ homes sealed and insulated since 2016 - every one with a written price before we started, and a documented record when we left. Every insulation job is quoted in writing before it starts and leaves a documented record, under The Haven Standard.”
Read the full promise →On the job
The Work, Up Close
What the work looks like, service by service.
Materials we install
Materials That Hold the Line for Decades
Insulation is only as good as the material and the prep underneath it. Here is what we put into an attic, a crawl space or a wall, and what the cheap bid puts in instead.
Blown-In Insulation
Loose-fill is most of what goes into an attic. The material and the depth it is blown to decide whether the attic holds R-38 in ten years or has settled to half of it.
What we install
We blow dense, borate-treated cellulose or premium fiberglass to the full code depth with a depth marker in every bay, over an air-sealed floor. Cellulose settles less than 15% and the borate keeps insects and mold out.
What the cheap bid installs
A cheap bid blows the thinnest bag count that reads "insulated" from the hatch, over a floor nobody sealed. It settles a third within a few winters, and the gaps around every can light and top plate keep leaking conditioned air.
Spray Foam
Closed-cell and open-cell foam are different products for different places. Applying the wrong one, or applying it thin, is the most expensive mistake in the trade.
What we install
We use closed-cell foam where moisture and structure matter: rim joists, roof decks, crawl walls: sprayed in passes to the rated thickness, and open-cell only where its vapor-open behavior is the right call.
What the cheap bid installs
A cheap bid sprays one thin pass of whatever is on the truck, leaves voids behind wiring and plumbing, and puts open-cell against a roof deck where it can trap moisture in the sheathing.
Radiant Barrier
In a hot-climate attic the radiant barrier is what keeps the roof deck from cooking the insulation below it. The foil grade and how it is hung decide whether it works.
What we install
We staple perforated, tear-resistant reflective foil to the underside of the rafters with an air gap on the shiny side, so radiant heat bounces before it reaches the attic floor and moisture can still escape.
What the cheap bid installs
A cheap bid lays a thin foil-faced bubble wrap flat on top of the insulation, where dust kills its reflectivity in a season and it traps moisture against the batts.
Crawl Space Vapor Barrier
The liner is the crawl space job. Thickness, seam treatment and how far it climbs the wall decide whether the moisture reading drops or the liner is a puddle in two years.
What we install
We lay 12- to 20-mil reinforced polyethylene, overlap every seam by a foot and tape it, run it up the foundation wall and mechanically fasten it, then seal the vents so the space can dry.
What the cheap bid installs
A cheap bid rolls out 6-mil builder plastic, leaves the seams loose and stops at the footing. Ground moisture wicks around every edge and the plastic tears the first time anyone crawls on it.
Air Sealing
Insulation slows heat; only air sealing stops the air that carries it. The sealing products used on the attic floor are the difference between a comfortable house and an insulated leaky one.
What we install
We foam every top plate, plumbing and wiring penetration, fit fire-rated covers over recessed lights and gasket the attic hatch before any insulation goes down: the blower-door number proves it.
What the cheap bid installs
A cheap bid skips sealing entirely, or squirts a little foam where it is visible from the hatch, then buries the open can lights and gaps under new insulation where they leak for good.
Our story
Doing It This Way Since 2016.
Envelope was founded in 2016 by a blower-door technician who kept being sent to top up insulation in attics that were leaking air through unsealed top plates and can lights. It refuses to blow insulation over an unsealed attic floor, and it publishes the before-and-after blower-door number on every job so the customer can see what they bought.
The building envelope is the term an energy auditor uses for the boundary between inside and outside. Naming the company after the system rather than the material is the point: insulation on top of unsealed penetrations is money in the attic.
Current Offers
Bring these savings to your next appointment.
10%
10% Off Your First Service Visit
Valid on your first completed service visit with us.
Expires Mar 31, 2027
Always
Written Price Before Any Work Starts
Expires Mar 31, 2027
Free
Free Second Opinion on Any Written Estimate
Expires Mar 31, 2027
Included
Documented Photo Record on Every Visit
Expires Mar 31, 2027
What Our Customers Say
Homeowners in every market we serve, in their own words.
★★★★★
"They air-sealed the attic floor before insulating and showed me the blower-door number before and after. The upstairs is finally the same temperature as downstairs."
★★★★★
"Crawl space encapsulation done properly. Photographs of the vapour barrier at every seam, and the damp smell in the hallway is gone."
★★★★★
"The winter gas bill dropped by about a third. They had estimated a quarter, so they under-promised."
★★★★★
"Two other companies quoted to blow more insulation on top of what was there. These were the only ones who said the existing material had to come out first, and explained why."
★★★★☆
"Fixed price, clean work, and they hauled the old material away as agreed."
Frequently Asked Questions
Everything you need to know about our insulation services.
Enter your ZIP code in the form at the top of this page, or browse the map. Every pin is a community we serve, and your request goes to the team that covers that area.
Yes. Every technician working under our name is licensed for insulation work in their state, insured, background-checked, and uniformed.
Always. You get an upfront, itemized price and you approve it before anything begins. No hourly surprises, and no discovering the real cost at the end.
Same-day and after-hours appointments are available across our network. Your local team confirms the arrival window when you book.
Yes, in writing. Parts and labor are covered, and if a job isn't right we come back and make it right.
Each location is independently owned and operated, and every one of them is held to the same standard, the same pricing practice, and the same written promise.
Tips & Resources
Insulation guides, maintenance tips, and straight answers from our experts.
Sep 19, 2026
How to Choose the Right Insulation Company in Chicago
How to Choose the Right Insulation Company in Chicago The right insulation contractor in Chicago is the one who hands you three...
Read More →Sep 18, 2026
Emergency Attic Insulation Near Me: What Chicago Homeowners Should Do First
Emergency Attic Insulation Near Me: What Chicago Homeowners Should Do First If you’re searching “emergency attic insulation near me” in Chicago, here’s...
Read More →Sep 18, 2026
GreenFiber Attic Insulation in Chicago: A Homeowner’s Guide
GreenFiber Attic Insulation in Chicago: A Homeowner’s Guide A Chicago attic insulated to R-49 with fiberglass batts can lose 30 to 40...
Read More →Join our team
Good Work Deserves a Good Place to Do It.
We are hiring technicians, apprentices, and office staff across the country. Real training, real tools, and a company that backs you the same way it backs the customer. If you take pride in doing the job right the first time, you will fit in here.
View All Open PositionsOwn a franchise
Own a Topside Franchise.
Protected territories, real training, national brand backing, and systems that are already working in towns like yours. Territories are open now.
Areas We Serve