Blown Cellulose Insulation in Old Tappan, NJ

Dense-Pack Coverage for Every Cavity and Attic

Blown cellulose is a dense-pack, high-recycled-content insulation solution that conforms to irregular spaces, existing wall cavities, and attic floors where batts cannot fully cover. Treated with borate fire retardant, it provides excellent thermal resistance and reduces air infiltration when properly dense-packed.

For GCs and developers working in Old Tappan, blown cellulose is an ideal specification for attic floor applications, retrofit projects in occupied buildings, and dense-pack wall cavity insulation where opening walls is not practical.

JB Insulation & Drywall installs blown cellulose as part of a full insulation scope — open and closed cell spray foam, fiberglass batt, and drywall — giving GCs and developers a single sub for the entire envelope package.

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R-3.7

R-value per inch — dense-pack performance

80%+

Recycled content — sustainable specification

Retrofit

Ideal for existing wall and attic applications

5+

Insulation services for any GC scope

What Blown Cellulose Insulation Delivers

Dense-pack performance, sustainability, and retrofit versatility that batts can't match in every application.

Dense-Pack Cavity Fill

Blown cellulose fills irregular cavities, existing wall cavities, and attic floors completely — including areas around wiring, pipes, and blocking that batts leave partially uncovered.

High Recycled Content

Made primarily from recycled paper fiber, cellulose carries one of the highest recycled content percentages of any insulation product — a sustainability credential that matters on green building projects.

Fire Resistance

Treated with borate compounds, blown cellulose is fire-resistant and meets Class I fire rating requirements — an important code compliance factor in commercial and multifamily construction.

Effective Air Infiltration Reduction

Dense-pack cellulose reduces air infiltration when installed at the correct density — improving blower door test results and energy code compliance.

Retrofit-Friendly

Cellulose can be installed in existing wall cavities through small drilled holes without opening walls — making it ideal for occupied building retrofits and energy upgrade projects.

Cost-Effective Attic Coverage

Blown cellulose on attic floors is one of the most cost-effective ways to bring existing buildings up to current energy code R-values quickly and with minimal disruption.

Common Applications in Old Tappan & Bergen County

Attic FloorsOpen-Blow Attic ApplicationsDense-Pack Wall CavitiesRetrofit ProjectsExisting BuildingsCathedral CeilingsFloor AssembliesRim Joists

The Cellulose Sub GCs in Bergen County Trust

JB Insulation & Drywall is a B2B insulation and drywall subcontractor. Our clients are general contractors, developers, and project managers. Here's why they keep coming back.

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Veteran-Owned & OperatedAccountability, professionalism, and zero excuses on every job site.
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Walls & Ceilings Top 25 Insulation ContractorNationally recognized among the top insulation contractors in the country.
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NJ Energy Code CurrentWe stay current on 2021 IECC requirements so your project closes out clean.
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Scaled for Developer & GC VolumesCrew depth and scheduling discipline for large multifamily and commercial projects.
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Full-Scope Sub — Insulation + DrywallOne sub for both scopes means fewer handoffs and fewer schedule conflicts.

JB Insulation & Drywall — At a Glance

Base:56 Spruce St, Oakland, NJ 07436

Service Area:Bergen, Passaic & Morris Counties, NJ; Hudson Valley, NY

Services:Open & Closed Cell Spray Foam, Fiberglass, Blown Cellulose, Drywall, Firestopping, Coatings

Recognition:Walls & Ceilings Top 25 Insulation Contractors

Ownership:Veteran-Owned Business

Clients:General Contractors, Developers, Project Managers — B2B only

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Frequently Asked Questions

Answers to what GCs and developers ask most about blown cellulose insulation in New Jersey.

What is blown cellulose insulation made from?

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Blown cellulose is made primarily from recycled paper fiber — typically newsprint — treated with borate compounds for fire resistance and pest deterrence. It carries a high recycled content percentage and is one of the most environmentally sustainable insulation options available.

Is blown cellulose good for attic retrofit projects in Bergen County?

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Yes — attic blown cellulose is one of the most cost-effective energy upgrades for existing buildings. JB installs cellulose on attic floors to bring buildings up to current NJ energy code R-values quickly and with minimal disruption to the occupied space below.

Can blown cellulose be used in existing wall cavities?

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Yes. Dense-pack cellulose is a proven method for insulating existing wall cavities without opening walls. Small holes are drilled in the sheathing, the cavity is packed to the correct density, and the holes are patched — a practical retrofit solution for occupied buildings.

How does cellulose compare to spray foam for attic applications?

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For attic floor open-blow applications, blown cellulose is typically more cost-effective than spray foam and achieves excellent R-values. Spray foam is preferred for unvented roof deck assemblies. JB installs both and can recommend the right product based on your assembly and budget.

Does JB install blown cellulose on large multifamily projects in Bergen County?

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Yes. JB Insulation & Drywall handles commercial volume blown cellulose installation for GCs and developers across Bergen County and the Hudson Valley. Call (201) 485-8990 or visit jb-insulation.com/contact to discuss your project.