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Welcome to 1st State Insulation!

Since 2015, 1st State Insulation LLC has been providing our customers with insulation services – and education – that make a difference. Whether it’s spray foam, fiberglass or mineral batts, we work closely with builders, homeowners and commercial contractors to identify the best solutions for their needs. Not only are we helping them to cut down energy consumptions and cost, but we are giving them the confidence of protection against moisture and heat damage.

The core value that drives our business is customer education. When a builder wants to invest in preventative energy measures, or when a homeowner wants to increase his home’s efficiency and safety, we treat each customer with honesty and respect by educating them on what they do – and don’t – need for their project.

In 2019, we joined the Installed Building Products Family of Companies, which has supported us as we continue to provide superior insulation products and personalized, on-demand support to builders and homeowners in Delaware, Southern New Jersey, Eastern Pennsylvania and Maryland’s Eastern Shore.

Whether you’re looking to invest in comfort and savings for your home, for outstanding thermal and acoustical performance that maximizes LEED ® credits for your building, or need answers on what insulation is best for each part of your new build, 1st State Insulation is ready to deliver what you need.

Greenwood City Insulation Contractors
We Are
We are partners on the job – educating our customers about their insulation needs with honesty, integrity and unmatched service.
We Do
From reducing air leaks, to preventing moisture damage to mitigating fire hazards, we deliver insulation solutions for every building.
We are Delaware’s leading insulation contractor, taking pride in the work we do for our corner of the Eastern Shore.
Interested in a sales or installation career? See our current job openings.
Quality Services You Can Trust
Air Sealing Services
Air Sealing

Along with insulating your home, checking for air leaks is an important step in saving energy and money, especially in older homes and buildings.

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Ventilation Services
Air Venting

Natural ventilation isn’t just required by most building codes, it also reduces the use of your AC by allowing for the release of warm air.

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Loose-Fill and Blown-In Insulation Installation
Loose Fill and
Blow-In Insulation

Made of fiberglass or mineral wool, loose-fill insulation is best for filling hard-to-reach areas that often get missed.

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Crawl Space Insulation Installers
Crawl Space

Insulating a crawl space – with mineral wool or fiberglass batts and rolls – is one of the most efficient ways to reduce air leakage in homes and buildings.

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Fiberglass Insulation Installation

This lightweight and cost-effective option can improve thermal insulation and sound-proofing measures in residential homes or in commercial buildings.

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Temperature control isn’t just about energy efficiency. If there is a fire or other heat-related hazard, intumescent coating can protect a structure from severe damage.

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Commercial Products

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Insulation Services

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Residential Products

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