--- title: Air-Sealing | South Central Services Insulation description: Does your home need an airtight seal? Discover why air-sealing means better air quality and lower energy costs for homes in and around Greencastle, PA. image: https://scsfoam.com/hubfs/assets/images/Air-Sealing%20Social%20Header.jpg --- [Skip to main content](https://scsfoam.com/air-sealing#maincontent) [(717) 895-3498](tel:7178953498) [![South Central Services Insulation](https://scsfoam.com/hs-fs/hubfs/branding/Website%20Logo%20Classic.png?width=900&height=300&name=Website%20Logo%20Classic.png) ![South Central Services Insulation](https://scsfoam.com/hs-fs/hubfs/branding/Website%20Logo%20White.png?width=900&height=300&name=Website%20Logo%20White.png)](https://scsfoam.com/) [Our Service Areas](https://scsfoam.com/our-services-areas) Pricing - [Our Rates](https://scsfoam.com/our-rates) - [Calculators](https://scsfoam.com/pricing-calculators) - [Financing](https://scsfoam.com/financing-options/) - [Rebates](https://scsfoam.com/rebates) [Our Team](https://scsfoam.com/our-team) Services - Residential Insulation - [Attic Insulation](https://scsfoam.com/attic-insulation) - [Basement Insulation](https://scsfoam.com/basement-insulation) - [Crawl Space Repair](https://scsfoam.com/crawl-space-encapsulation) - [Commercial Spray Foam](https://scsfoam.com/commercial-spray-foam/) - [New Construction Insulation](https://scsfoam.com/new-home-construction-insulation/) - [Pole Building Insulation](https://scsfoam.com/pole-building-insulation) - [Air-Sealing](https://scsfoam.com/air-sealing) - [Blower Door Tests](https://scsfoam.com/blower-door-tests) [Our Products](https://scsfoam.com/our-products) Learning Center - [Learning Center](https://scsfoam.com/learning-center) - [Downloadable Resources](https://scsfoam.com/downloadable-resources) - [FAQ](https://scsfoam.com/faq/) Open Search [Get A Quote](https://scsfoam.com/contact/) Search for topics or resources Enter your search below and hit enter or click the search icon. Search for topics or resources Close Search [Our Service Areas](https://scsfoam.com/our-services-areas) Pricing Pricing [Our Rates](https://scsfoam.com/our-rates) [Calculators](https://scsfoam.com/pricing-calculators) [Financing](https://scsfoam.com/financing-options/) [Rebates](https://scsfoam.com/rebates) [Our Team](https://scsfoam.com/our-team) Services Services Residential Insulation Residential Insulation [Attic Insulation](https://scsfoam.com/attic-insulation) [Basement Insulation](https://scsfoam.com/basement-insulation) [Crawl Space Repair](https://scsfoam.com/crawl-space-encapsulation) [Commercial Spray Foam](https://scsfoam.com/commercial-spray-foam/) [New Construction Insulation](https://scsfoam.com/new-home-construction-insulation/) [Pole Building Insulation](https://scsfoam.com/pole-building-insulation) [Air-Sealing](https://scsfoam.com/air-sealing) [Blower Door Tests](https://scsfoam.com/blower-door-tests) [Our Products](https://scsfoam.com/our-products) Learning Center Learning Center [Learning Center](https://scsfoam.com/learning-center) [Downloadable Resources](https://scsfoam.com/downloadable-resources) [FAQ](https://scsfoam.com/faq/) [(717) 895-3498](tel:7178953498) [Get A Quote](https://scsfoam.com/contact/) Air-Sealing # Stop Air Leakage To Boost Energy Efficiency Many homes in southern Pennsylvania face air leakage and drafts. By adding an airtight seal to key areas in your thermal envelope, you can lower your energy costs. [Request My Quote](https://scsfoam.com/air-sealing#quote) [Where To Air-Seal](https://scsfoam.com/air-sealing#locations) Air Leakage Problems ## Why Should I Invest In An Air-Seal? ### High Energy Bills When air leaks, so does heat. This leads to a hot house in the summer and a freezing home in the winter. Adding an air-seal supports your HVAC system. ### Poor Air Quality If air can leak, air pollution can leak with it. In southern PA, that means the smells of manure, factory pollution, and burnt trash can sneak into your home. ### Pest Infestations Insects and rodents often use areas of air leakage as pathways into your home. An airtight seal cuts off these entry points. ### Home Discomfort Air leakage contributes to fluctuating temperatures in your home. With an air-seal, you can more easily condition your air because it stays inside. Your Thermal Envelope ## Where To Add An Airtight Seal You can add an air-seal anywhere in your thermal envelope. The thermal envelope is the outer shell of your home, separating the conditioned space inside from the external environment.  [Request My Free Insulation Quote](https://scsfoam.com/air-sealing#quote) ### Your Attic Or Roof Air leakage in the attic causes problems in the summer and winter. In summer, hot air presses from your attic into your living space. In the winter, the heat you pay for escapes through the attic. An air-seal helps your home stay more comfortable all year long. ### Your Exterior Walls In a new construction home, you have the opportunity to add an airtight seal to your walls. Otherwise, air will exchange uncontrollably through your walls. It has a similar effect to leaving a door or window open. ### Your Basement Rim Joists The band boards of a basement are a common culprit for air leakage. Masonry meets wood. Without an airtight seal, cold air will be sucked into your home through the rim joists, especially during the winter. ### Your Crawl Space If your home has a crawl space, it faces similar air leakage as a basement. The biggest difference is that most crawl spaces are musty and moldy. You breathe crawl space air anytime there is air exchange. ## Benefits Of Air-Sealing Some benefits of air-sealing vary by application. ### Encapsulated Attic Spray Foam On Roof Deck Attic Air-Seal Lower energy bills Improved home comfort Improved indoor air quality Fewer pest infestations Reduced heat load on ductwork Reduced risk of ice damming ### Air-Sealed Rim Joists Spray Foam On Band Boards Basement Air-Seal Lower energy bills Improved home comfort Improved indoor air quality Fewer pest infestations Reduced cold air drafts ### Encapsulated Crawl Space Spray Foam On Walls Crawl Space Air-Seal Lower energy bills Improved home comfort Improved indoor air quality Fewer pest infestations Reduced cold air drafts [Request My Free Quote](https://scsfoam.com/air-sealing#quote) [Compare Air-Sealing Products](https://scsfoam.com/blog/best-air-sealing-products) Building Science Behind Air-Sealing ## Heat Travels Through The Air The goal of insulation is to stop heat transfer. R-value, or resistance value, is the measurement of how well a material can resist conductive heat transfer. All insulation materials need a high R-value. **But R-value doesn't tell us anything about how well a material resists convective and radiant heat transfer.** While heat does travel directly, like from a stovetop to a pan, it also travels through the air. Convection heat is how heat circulates through the air, and radiation is why you can feel the warmth of the sun when you stand outside in the winter. All insulations can combat conduction heat, but not all insulations can slow convection or radiation. Adding an air-seal makes your insulation more effective. [Learn More About Heat Transfer](https://scsfoam.com/blog/how-does-heat-travel-in-a-house) [Why Air-Sealing Matters](https://scsfoam.com/blog/why-is-air-sealing-a-home-important) ## Contact South Central Services Interested in air-sealing areas of your home? We'll visit your site at no charge to you. Use this form to contact us, and we'll give you a call in the next 2 to 3 business days. ### Make sure you live within our service area! [We service counties](https://scsfoam.com/our-services-areas) in Pennsylvania, Maryland, Virginia, and West Virginia. ![South Central Services' brothers and owners, Zeshan and Kilian Agha.](https://scsfoam.com/hs-fs/hubfs/Team%20Photos/Owners%20(2).jpg?width=1526&height=1145&name=Owners%20(2).jpg) ## Check Our Service Areas Use the map to see if your project is located within our service area. We work in areas of southern Pennsylvania and some counties in Maryland, Virginia, and West Virginia.   ## Air-Sealing FAQs ### What Services Include Air-Sealing? Air-sealing is included in all of our insulation services. When you have spray foam insulation installed, you automatically benefit from an airtight seal. [via GIPHY](https://giphy.com/gifs/open-cell-spray-foam-contractor-expanding-insulation-U7L6fA8M9EN2qUoVqX) Our team also includes an air-seal with blown-in insulation in attics. ### What Products Do You Use For Air-Sealing? South Central Services uses closed cell spray foam, open cell spray foam, can foam, and silicone caulking to create an airtight seal. Which product we use depends on your project. ### Does Air-Sealing Qualify For Tax Incentives? Air-sealing does qualify for a [federal tax credit called 25C](https://www.energystar.gov/about/federal-tax-credits/insulation). Air-sealing falls under the insulation section. Location 1574 Buchanan Trail East, Greencastle, PA 17225 Phone: [(717) 895-3498](tel:7178953498) Connect With Us - [Facebook](https://www.facebook.com/p/South-Central-Services-Insulation-100057064885687/) - [Instagram](https://www.instagram.com/scsfoam/) - [YouTube](https://www.youtube.com/@scsfoam) - [info@scsfoam.com](mailto:info@scsfoam.com) Services - [Attic Insulation](https://scsfoam.com/attic-insulation) - [Basement Insulation](https://scsfoam.com/basement-insulation) - [Crawl Space Repair](https://scsfoam.com/crawl-space-encapsulation) - [Commercial Spray Foam](https://scsfoam.com/commercial-spray-foam/) - [New Home Insulation](https://scsfoam.com/new-home-construction-insulation/) - [Pole Building Insulation](https://scsfoam.com/pole-building-insulation) - [Air-Sealing](https://scsfoam.com/air-sealing) - [Blower Door Tests](https://scsfoam.com/blower-door-tests) Pricing Information - [Our Rates](https://scsfoam.com/our-rates) - [Calculators](https://scsfoam.com/pricing-calculators) - [Financing Options](https://scsfoam.com/financing-options/) - [Rebate Information](https://scsfoam.com/rebates) - [Pricing Articles](https://scsfoam.com/blog/tag/product-pricing) Proud Member of Cumberland Valley Business Alliance     Company - [Our Service Areas](https://scsfoam.com/our-services-areas) - [Our Products](https://scsfoam.com/our-products) - [Our Team](https://scsfoam.com/our-team) - [Contact Us](https://scsfoam.com/contact/) - [Join Our Team](https://scsfoam.com/our-team#hiring) - [Privacy Policy](https://scsfoam.com/privacy-policy) Learn More - [FAQ](https://scsfoam.com/faq/) - [Learning Center](https://scsfoam.com/learning-center) - [Downloadable Resources](https://scsfoam.com/downloadable-resources) © 2026 South Central Services All Rights Reserved.