Maryland Insulation FAQ: 29 Questions Answered

Maryland sits in DOE Climate Zone 4. The DOE-recommended attic insulation R-value for Zone 4 is R-49 minimum, with R-60 recommended for cold-climate-leaning northern MD counties. Maryland code allows R-38 as the minimum for new construction, but R-49 is the practical target for existing-home upgrades because the lifetime energy savings cover the upgrade cost in 3 to 7 years. JDH defaults every quote to R-49 with R-38 and R-60 as documented options.

JDH defaults to R-49 attic insulation on every Maryland project, the DOE-recommended level for Climate Zone 4. R-38 is offered as a lower-cost option for tighter budgets; R-60 is offered for energy-focused customers and northern MD homes. JDH always installs soffit baffles at every rafter bay (critical for ventilation; commonly skipped by lower-bid contractors) and verifies R-value-at-install per Owens Corning specifications.

JDH installs Owens Corning PINK Fiberglas as the default attic insulation across Maryland and Virginia. PINK is industry-standard, ENERGY STAR certified, GREENGUARD Gold certified for low chemical emissions, and carries a Limited Lifetime warranty on the material. JDH also installs cellulose blown-in (recycled denim fiber) when customers prefer it over fiberglass for environmental reasons or specific cavity conditions. We do not install spray foam at this time.

Both work; the right answer depends on attic geometry. Fiberglass batt (rolls cut to fit between rafters) is faster on open attics with regular rafter spacing and easier to remove if needed. Blown-in cellulose (loose fill applied with a blower) is better on attics with irregular framing, lots of penetrations (HVAC ducts, recessed lights, plumbing vents), or knee-wall spaces. JDH's Design Specialist inspects the attic during the free consultation and recommends the approach that gives the best continuous R-value coverage for your specific framing.

Not at this time. JDH installs attic insulation (Owens Corning PINK fiberglass batt or cellulose blown-in) only. We do not install closed-cell or open-cell spray foam, do not do wall cavity insulation in existing homes (drill-and-fill), and do not do basement or crawlspace insulation. For these scopes, JDH refers to MD-licensed specialty insulation contractors. We focus on attic insulation because it is the highest-ROI insulation upgrade for almost every Maryland home.

Achieved R-value at install is the actual measured R-value in your attic after the insulation is placed, NOT the manufacturer label rating. Fiberglass batt and blown-in cellulose both compress over time and lose effective R-value if installed incorrectly (too thin, gaps around penetrations, compressed against rafters, blocking soffit ventilation). JDH measures the achieved R-value at every install and documents it in writing. Owens Corning's warranty requires achieved R-value verification, so this measurement is also the warranty-trigger document.

Yes, when the existing insulation is contaminated. JDH removes and disposes of insulation that shows rodent damage (droppings, urine staining, tunneling), water damage (saturation, visible mold), or asbestos contamination (vintage homes pre-1980 may have vermiculite). Clean dry existing insulation is typically left in place and topped with fresh fill to reach the target R-value. Removal adds $1.50 to $2.50 per square foot and is itemized on every quote.

A typical 1,500 to 2,500 sq ft Maryland attic is a 1-day install with a JDH 2-person crew, including soffit baffle installation, air sealing of penetrations, and R-value verification. Larger custom homes (3,500+ sq ft) or projects with significant existing insulation removal can take 2 to 3 days. The crew works through your attic access, no living-space disruption beyond the access point, and we leave the attic floor cleaner than we found it.

Yes, almost always. Bundling insulation with a roof replacement captures the open eave access that's already exposed during the roof tear-off, which makes soffit baffle installation faster + better. The bundled financing usually delivers a better APR on the larger consolidated balance, and the warranty start dates synchronize. Sequence: insulation crew goes in immediately AFTER the roof underlayment is installed but BEFORE the new shingles go on, so the attic is dry and accessible.

Yes. JDH Remodeling carries six vetted lenders that finance insulation projects from $2,500 single-attic jobs up to $20,000 whole-home envelope projects. One soft-pull application returns offers from all six lenders without affecting your credit. Most insulation tickets land between $3,000 and $11,000, and over 90 percent of applicants approve on the first soft pull. The headline plan is 12 months no interest, no payments.

Yes. Owens Corning PINK Fiberglas is the default attic insulation JDH installs across Maryland and Virginia. We are not a certified Owens Corning preferred contractor at the insulation-specific level (Owens Corning's Preferred designation is primarily for roofing). For insulation, we install the PINK material because it is the industry standard, ENERGY STAR certified, GREENGUARD Gold certified, and carries the Limited Lifetime material warranty.

Yes. JDH's lender platform serves a wider credit range than most banks. Service Finance Company approves insulation financing as low as 550 FICO. Foundation Finance has a second-look program for the 580 to 620 band. FinanceIt approves down to 620 with longer terms. The APR is higher at the lower end of the range, but the path exists. The soft pull surfaces your actual qualified offer in 60 to 90 seconds without affecting your score.

Yes, but the term gets used two different ways. A true 0% APR loan, like Wisetack offers on qualifying short-term plans up to $25,000, charges zero interest no matter when you pay it off. A deferred-interest promo, like the 12-month no-interest plan we run through Service Finance Company, charges zero interest only if the balance is paid in full before the promo window ends. Both are useful for insulation projects, but the mechanics are different. JDH presents the exact terms in writing before any signature.

The lenders we carry offer insulation-replacement loan terms from 24 months up to 15 years. Service Finance Company and FinanceIt both go to 15 years on qualified loans, which gives the lowest monthly payment but the highest total interest paid. Synchrony and GreenSky run 3 to 12 years. The right term is whichever monthly payment fits your budget without stretching past the expected service life: PINK Fiberglas carries a Limited Lifetime warranty, so 10 to 15 years is a sensible cap.

Yes. JDH carries Maryland MHIC #137491 and Virginia Class A contractor license #2705192986. Both are verifiable on the state licensing portals: the Maryland DLLR portal for MHIC and the Virginia DPOR portal for Class A. We have been licensed and family-owned since 1986.

Verify three credentials before any insulation contract in Maryland. First, an active MHIC license (Maryland Home Improvement Commission; JDH is #137491) is legally required for any project over $500. Second, a manufacturer authorization for the insulation brand they install (Owens Corning, Johns Manville, CertainTeed, Knauf). Third, an explicit written commitment to verify achieved R-value at install (NOT just label R-value), to install soffit baffles at every rafter bay, and to air-seal penetrations before placing insulation. Avoid contractors who quote based on label R-value without measurement, who skip baffle installation, or who do not document air-sealing.