The Insulation Blog
Notes on Attics, Air Leaks & Comfort
Straight-talk guides from the crew — R-value without the sales pitch, the sealing-first rule, and how to read your own house.
R-Value, Explained: How Much Attic Insulation Does a Maryland Home Actually Need?The number on the bag is only the beginning. What R-value means, why the guidance for our climate zone is higher than most homes were built with, and why a thin spot undoes a thick average.Read →
Insulate First or Air Seal First? Why the Order Matters More Than the MaterialTwo jobs, one correct order. The stack effect, the dust-streak fingerprints that reveal your leaks, and why every Eagle insulation job starts with a foam gun, not a blower.Read →
Blown-In vs. Batt Insulation: Which Belongs in Your Attic?The right answer depends on your attic's shape, not on which material has the better brochure. Here's how we decide, home by home.Read →
7 Signs Your Home Is Telling You It Needs InsulationHomes rarely hide an insulation problem — they announce it in comfort complaints. Seven symptoms, what causes each, and which one should send you to the phone first.Read →
Ice Dams in Maryland: Your Attic Is the Cause — and the CureRoofers get the call, but the cause lives below the roof deck. How an ice dam is really born, what it does to your home, and the attic work that ends the cycle.Read →
Spray Foam Insulation: Where It's Worth Every Penny — and Where It Isn'tFoam is the most capable insulation we install and the most oversold. A straight account of its strengths, its limits, and how we decide where it belongs in a home.Read →
How to Check Your Attic Insulation Depth in 15 Minutes (Safely)A ruler, a flashlight and fifteen careful minutes. The safe way to measure your own attic — and how to read the lowest number, which is the one that matters.Read →Crawl Space Insulation: The Floor Above Your Head Nobody Thinks AboutCold floors and musty air usually start below. Walls or ceiling, foam or batt — how the crawl space decision actually gets made, and why moisture always goes first.Read →
Radiant Barriers: What They Actually Do (and When They Earn Their Keep)Foil is not insulation and does not pretend to be. What radiant heat is, why summer attics are its moment, and the Maryland homes it genuinely helps.Read →When Old Insulation Has to Come Out: 6 Findings That End the Top-Up TalkTopping up is our default advice — except for these six findings. Water, animals, smoke, suspect legacy fill and two more that end the top-up conversation.Read →
Insulation Is a Summer Upgrade Too: Why Your Upstairs Bakes in JulyThe attic that leaks heat in January cooks your top floor in July. Why the summer fixes are the winter fixes, plus the ductwork wildcard nobody checks.Read →Fiberglass vs. Cellulose vs. Mineral Wool: The Honest Material GuideThree material families, three personalities. R-value, fire, water, sound, settling and cost compared honestly — and why installation quality beats all of them.Read →Attic Ventilation and Insulation: The Partnership That Prevents MoldInsulation manages heat; ventilation manages moisture. How soffits, baffles and ridge vents are supposed to work together — and the breakdowns we find instead.Read →Basement Insulation: Rim Joists First, Walls Second, Regrets NeverThe leakiest band of your house is two feet tall and hides above your basement walls. Rim joists first, walls second — the order that prevents regrets.Read →Maryland Insulation Rebates and Energy Programs: What to Check Before You Pay Full PriceUtility rebates, home-performance audits and tax provisions can offset a real share of a Maryland insulation job. What exists, and why the audit must come first.Read →