The Home Envelope | Insulation, Air Sealing and More

A 1-inch hole in your drywall can push 14 pints of water into your walls in a single winter. Here are 5 ways moisture rots walls from the inside out.Learn why air leaks carry nearly 10x more moisture than vapor diffusion, how sun on wet brick forces vapor inward at 270 lbs per square foot, and why a double vapor barrier traps water in your walls for years. Plus, why mold can grow inside your walls even when your house feels dry, and how exterior insulation, rain screens and smart vapor retarders keep walls drying.Brought to you by Nealon Insulation, Connecticut's insulation contractor since 1977. Based in Clinton, Connecticut, and serving homeowners statewide. Keep moisture out of your walls with air and vapor barriers: https://www.nealoninsulation.com/air-vapor-barrier#MoistureInWalls #VaporBarrier #MoldPrevention #BuildingScience #Insulation #Connecticut #HomeImprovement

Your house is still drafty after new windows, and the glass is rarely to blame. Here's where the cold air is really getting in.Learn why the chill across your ankles is often a fake draft off cold glass, how the stack effect turns your home into a chimney, and why 1 recessed can light can leak 9 CFM50 into your attic. We break down the top plate gap that equals a window left open 4 to 5 inches all winter, how leaky ducts and closed bedroom doors pull cold air through your walls, and the attic-first air sealing order to follow before you replace another window.Nealon Insulation has kept Connecticut homes warm since 1977. Based in Clinton, Connecticut, we serve homeowners across the state. Book a free air sealing estimate at https://www.nealoninsulation.com/air-sealing#DraftyHouse #AirSealing #StackEffect #EnergyEfficiency #Insulation #Connecticut #HomeImprovement

Insulate your old plaster walls the wrong way and you can rot the framing—or send hundreds of pounds of plaster crashing to the floor.Pre-1950s homes hide empty wall cavities that bleed heat through a constant convective loop. This episode breaks down the fix: why dense pack cellulose packed to 3.5 lbs per cubic foot is the gold standard for historic walls, cutting cavity air leakage up to 90% and reaching R-13 in a 2x4 wall. You'll learn the "knuckle tap" test that keeps your plaster from pillowing off the lath, why burying live knob-and-tube wiring is a fire hazard, how insulating without air sealing is a sweater with no windbreaker, and why the right retrofit can trim heating bills 30-50%.Brought to you by Nealon Insulation, Connecticut's trusted insulation contractor since 1977. Based in Clinton, Connecticut, and serving homeowners across the state. Get a free estimate for your older home at https://www.nealoninsulation.com/historic-home#DensePackCellulose #PlasterWalls #HistoricHomeInsulation #CTHomeowners #HomeImprovement #Insulation #Connecticut

Ice dams aren't a roof problem — they start in your warm attic. Here's why Connecticut homeowners get them every winter and how to stop them for good.We break down the physics: a foot of snow acts like an R10–R15 blanket, your warm attic melts it from below, and it refreezes into a wall of ice at your cold eaves. You'll hear why your gutters are innocent, why hacking at the ice with a hammer or running electric heat cables only makes it worse, and the 3-step permanent fix — air sealing, R-49 to R-60 attic insulation, and balanced ventilation. Plus the weird pantyhose-and-calcium-chloride trick for emergency relief (never rock salt).Brought to you by Nealon Insulation, Connecticut's trusted insulation contractor since 1977. Based in Clinton, Connecticut, and serving homeowners across the shoreline and statewide. Get a free attic insulation estimate at https://www.nealoninsulation.com/attic-insulation#IceDams #AtticInsulation #AirSealing #CTHomeowners #Insulation #Connecticut #HomeImprovement

Why is your upstairs 10 degrees hotter than the rest of your house, even with the AC running nonstop?The culprit usually isn't your air conditioner. It's airflow, air leaks, attic insulation and ventilation working against each other. You'll learn how your home works as one system, why closing supply vents or installing a bigger AC unit can make a hot second floor worse, and the fixes that actually make your upstairs comfortable all summer.Brought to you by Nealon Insulation, fixing temperature imbalances in Connecticut homes since 1977. Based in Clinton, Connecticut, and serving homeowners across the state. Get a free attic insulation estimate at https://www.nealoninsulation.com/attic-insulation#HotUpstairs #AtticInsulation #AirSealing #CTHomeowners #Insulation #Connecticut #HomeImprovement

Even the best ceiling insulation fails if hidden bypasses above your ceiling stay unsealed. Here's what really matters up there.We cover Connecticut's R-60 attic standard, why air sealing comes first, and how winter heat loss, the stack effect, attic moisture and ice dams connect. You'll hear how cellulose, fiberglass, spray foam and rigid foam compare, how vented attics differ from unvented roofs and cathedral ceilings, and the hazards that stop a job before it starts: live knob-and-tube wiring, asbestos-containing vermiculite, mold and roof leaks.Nealon Insulation has kept Connecticut homes comfortable since 1977. Based in Clinton, Connecticut, we serve homeowners across the state. Get a free ceiling insulation estimate at https://www.nealoninsulation.com/ceiling-insulation#CeilingInsulation #AtticInsulation #AirSealing #CTHomeowners #Insulation #Connecticut #HomeImprovement

Up to 60% of the air you breathe indoors can rise from your crawl space. Here's how to stop that damp, musty space from costing you.We break down the shift from vented crawl spaces to encapsulation, and why traditional vents invite humid summer air into your foundation. You'll learn how encapsulation works — a heavy-duty vapor barrier, sealed vents and a dehumidifier — how insulation materials compare, and how proper crawl space work can cut heating and cooling costs 15–20%. Plus the safety and code checks to know first: termite inspection gaps, fire ratings and radon.Brought to you by Nealon Insulation, Connecticut's insulation contractor since 1977. Based in Clinton, Connecticut, and serving homeowners statewide. Get a free crawl space encapsulation estimate at https://www.nealoninsulation.com/crawl-space-encapsulation#CrawlSpaceEncapsulation #CrawlSpace #MoistureControl #CTHomeowners #Insulation #Connecticut #HomeImprovement

Is the room above your garage freezing? Garage insulation is where the fix starts — here's what actually works.We cover what building codes require for attached garages, why condensation drips off garage doors, and how spray foam, fiberglass, cellulose and mineral wool compare for heated, attached and storage-only garages. You'll hear when a "flash and batt" hybrid makes sense, low-cost fixes that stop winter condensation, and how an insulated garage becomes a thermal buffer that cuts HVAC strain and warms the rooms you live in.Nealon Insulation has kept Connecticut homes comfortable since 1977. Based in Clinton, Connecticut, we serve homeowners across the state. Get a free garage insulation estimate at https://www.nealoninsulation.com/garage-insulation#GarageInsulation #SprayFoam #MoistureControl #CTHomeowners #Insulation #Connecticut #HomeImprovement

Your wall studs carry heat right past your insulation. Continuous insulation stops that thermal bridging — here's how it works in Connecticut homes.We break down the 2022 Connecticut State Building Code for Climate Zone 5A, including the shift to continuous insulation and the R-60 attic standard. You'll learn how drill-and-fill insulates existing walls without removing drywall or siding, how closed-cell spray foam and dense-pack cellulose compare, how to insulate a 200-year-old home without rot or spalling brick, and why DIY vermiculite removal can spread asbestos. Plus Energize CT rebates of up to $2.00 per square foot.Brought to you by Nealon Insulation, Connecticut's trusted insulation contractor since 1977. Based in Clinton, Connecticut, and serving homeowners statewide. Get a free wall insulation estimate at https://www.nealoninsulation.com/wall-insulation#WallInsulation #ThermalBridging #ContinuousInsulation #EnergizeCT #Insulation #Connecticut #HomeImprovement

A 1/4-inch gap is an open door for a house mouse — and your home's air leaks lead rodents straight to it.The stack effect turns tiny air leaks into scent highways to your rim joists, attic top plates and basement penetrations. You'll hear why fiberglass often becomes a "mouse hotel," how borate-treated cellulose, spray foam and mineral wool compare on gnaw resistance, and the real cost of an infestation: lost R-value, higher heating bills, and remediation that can top $5,000 that standard homeowner's insurance often won't cover. Plus the layered exclusion that works: sheet metal, hardware cloth, Xcluder fabric and proper air sealing.Nealon Insulation has protected Connecticut homes since 1977. Based in Clinton, Connecticut, we serve homeowners across the state. Get a free estimate on pest and rodent barriers at https://www.nealoninsulation.com/pest-rodent-barriers#RodentProofing #PestControl #AirSealing #CTHomeowners #Insulation #Connecticut #HomeImprovement