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Insulation Experts You Trust

Upstate SC, Western NC, & Northern GA

Over 50 Years of Experience 

Product Warranties Are Available 

Free Estimates Within 24-Hours

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Revolutionize Your Home's Comfort With Glenco Foam & Insulation

Since 1976, Glenco Foam & Insulation has been the trusted name in insulation solutions across Upstate SC, Western NC, and Northern GA. We're not just insulation contractors; we're comfort creators, energy-saving experts, and your partners in building a more efficient home. With over 50 years of experience, our family-owned business has mastered the art of keeping homes cozy in winter and cool in summer, all while helping you save on energy bills.
At Glenco Foam & Insulation, we pride ourselves on our commitment to quality and customer satisfaction. Our team of certified Icynene installers uses only the highest-quality products, installed with precision by our hourly employees. We're licensed, bonded, and insured, giving you peace of mind with every project. Plus, we offer free estimates within 24 hours and can usually schedule services within 48 hours. Whether you're a homeowner looking to improve your living space or a contractor seeking reliable insulation services, we're here to exceed your expectations. Ready to transform your home's comfort and efficiency? Contact us today and experience the Glenco difference!

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Why Choose One of the Leading Insulation Companies in Greenville, SC

Free Estimates within 24-Hours

Over 50 Years of Experience

Product Warranties Are Available

Licensed, Bonded and Insured

Carries Liability Insurance

Military and Church Discounts 

Glenco Foam & Insulation

Crawlspace Insulation Services

Don't let your crawlspace be the forgotten area of your home. Our crawlspace insulation services create a barrier against moisture, pests, and energy loss. As one of the reliable insulation companies in Greenville, SC, we’ll assess your specific needs and recommend the best solution, whether it's spray foam, fiberglass, or another high-performance material.

Insulation Replacement Services

Is your old insulation letting you down? Our insulation replacement services breathe new life into your home's energy efficiency. We'll remove outdated or damaged insulation and install modern, high-performance materials that keep your home comfortable year-round while reducing energy costs.

Insulation Services

From attics to walls, basements to garages, our comprehensive insulation services cover every nook and cranny of your home. We offer a range of insulation types to suit your specific needs and budget, ensuring optimal thermal performance and sound reduction throughout your living spaces.

Spray Foam Installation

As certified Icynene installers, we specialize in state-of-the-art spray foam installation. This advanced insulation method creates an airtight seal, dramatically improving your home's energy efficiency. It's perfect for both new construction and retrofitting existing homes, offering superior insulation and moisture control in one application.

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Glenco Foam & Insulation
Military Heroes Save 10%
Glenco Foam & Insulation proudly offers a 10% discount to all active and veteran military personnel. Keep your home comfortable and energy-efficient while we honor your service.
Call Glenco today to claim your military discount!

Not valid with any other offers or promotions. Restrictions apply.

Must mention this coupon at the time of scheduling.

Glenco Foam & Insulation
Military Heroes Save 10%
Glenco Foam & Insulation proudly offers a 10% discount to all active and veteran military personnel. Keep your home comfortable and energy-efficient while we honor your service.
Call Glenco today to claim your military discount!

Not valid with any other offers or promotions. Restrictions apply.

Must mention this coupon at the time of scheduling.

Glenco Foam & Insulation
Churches Save 10% on Insulation
Glenco Foam & Insulation offers a 10% discount to churches in Upstate SC, Western NC, and Northern GA. Improve your congregation's comfort and reduce energy costs with our professional insulation services.
Contact Glenco now for your church's insulation needs!

Not valid with any other offers or promotions. Restrictions apply.

Must mention this coupon at the time of scheduling.

Recent Projects

Here's what our satisfied customers are saying...

At Glenco Foam & Insulation, we take pride in providing exceptional residential and commercial spray foam insulation services to our customers. We would be grateful if you could share your thoughts about our business with others. Your feedback helps us improve and helps others make informed decisions. Please take a moment to leave a review of residential and commercial spray foam insulation services and let others know what you think.

Frequently Asked Questions 

  • What signs indicate that my home may need new or upgraded insulation?

    As one of the leading insulation companies in Greenville, SC, we often tell homeowners that the biggest signs of insulation issues usually show up in comfort and energy use. If you notice uneven temperatures between rooms, drafts, rising utility bills, or rooms that feel unusually hot in summer or cold in winter, your insulation may no longer be performing the way it should. Older homes with original insulation typically struggle with moisture retention, sagging materials, or gaps created over time. When you work with Glenco Foam & Insulation, we examine the areas most commonly affected such as attics, crawlspaces, garages, and exterior walls to determine whether repair, replacement, or a full upgrade will deliver better comfort and efficiency.

  • How do I know which type of insulation is best for my home?

    Choosing the right insulation depends on your home’s structure, energy goals, and budget. As one of the most experienced insulation companies in Greenville, SC, we assess factors such as moisture exposure, air leakage, and thermal performance requirements. Spray foam may be ideal for homeowners seeking maximum efficiency and air sealing, while fiberglass or other materials may be suitable for specific areas of the home. We always guide you through the pros and cons of each option so you feel confident in the solution selected.

  • What should I expect during the insulation installation or replacement process?

    Our team handles every project with precision and care. When Glenco Foam & Insulation arrives, we begin by evaluating existing conditions, protecting your home’s surfaces, and preparing the work area. If old insulation needs removal, we do so safely and cleanly before installing the new material. Once installation begins, we focus on airtight coverage, proper thickness, and adherence to manufacturer guidelines. After completion, we inspect the area with you, review what was installed, and make sure your home is left clean and ready for use. Communication is a priority from start to finish.

  • Can insulation improve indoor air quality or reduce moisture issues?

    Absolutely. High-quality insulation plays a major role in limiting pollen, dust, and outdoor pollutants from entering your home. Spray foam helps create a tight seal that reduces drafts and airborne contaminants. Moisture problems often stem from poor insulation or ventilation, especially in crawlspaces and basements. As one of the knowledgeable insulation companies in Greenville, SC, we evaluate humidity levels, signs of condensation, and airflow patterns to ensure the materials we install help protect your home from mold, mildew, and moisture-related damage.

  • How does insulation affect overall energy efficiency in different seasons?

    Proper insulation is essential for reducing heating and cooling demands year-round. In winter, insulation keeps warm air inside and prevents heat loss through walls, roofs, and floors. In summer, it slows down heat transfer from outdoors, which helps your cooling system work less. When we evaluate a home, we look for areas where energy is being wasted and recommend solutions that maximize efficiency. Many homeowners notice immediate improvements in comfort and more stable utility bills after upgrading with Glenco Foam & Insulation.

  • Is it necessary to remove old insulation before installing new materials?

    In some cases, yes. If your existing insulation is contaminated with moisture, pests, mold, or severe deterioration, it should be removed to prevent long-term problems. However, not all replacement projects require full removal. We determine the best approach based on the condition of your insulation and the type of product being installed. Our goal is always to deliver a safe and long-lasting solution tailored to your home’s needs.

  • How long does insulation typically last before needing replacement?

    Most insulation materials, when properly installed, can last for decades. However, factors like moisture exposure, animal activity, settling, and aging construction can shorten the lifespan. Homes built several decades ago often lack the modern insulation standards that today’s materials provide. At Glenco Foam & Insulation, we evaluate not just the age of your insulation but also its performance indicators. If your home struggles with energy loss or inconsistent temperatures, your insulation may no longer be effective even if it appears intact.

  • What areas of a home benefit most from insulation upgrades?

    Areas such as attics, crawlspaces, basements, garages, and exterior walls are some of the most impactful places to improve insulation. These zones typically experience the highest energy loss and can create noticeable comfort issues if not properly sealed. As one of the reputable insulation companies in Greenville, SC, we focus on upgrading the spaces that produce the greatest improvements first. Whether it is reducing drafts, stabilizing indoor temperatures, or supporting long-term energy savings, strategic insulation upgrades make a significant difference throughout your home. Our team also evaluates how each insulated area interacts with your entire home so we can ensure maximum performance, consistent comfort, and long-lasting energy efficiency.