"We seal what others miss."
CoreSeal delivers professional air sealing, blown insulation, basement blanket, and energy efficiency upgrades for homeowners, builders, and contractors across Pennsylvania — backed by 12+ years of hands-on experience and a price-beat guarantee.
From air sealing hidden gaps to full insulation upgrades — CoreSeal handles every part of your building envelope with precision and professionalism.
Air Sealing
We identify and seal the hidden gaps, cracks, and penetrations that let conditioned air escape — improving comfort and cutting energy waste where others simply overlook.
Blown Insulation
Blown-in insulation fills every corner and void with a seamless thermal barrier — ideal for attics, walls, and hard-to-reach spaces that standard batts simply can't cover.
Basement Blanket
Our basement blanket system insulates foundation walls and crawlspaces, stopping cold floors, moisture problems, and energy loss from the ground up.
Batt Fiberglass
Properly installed fiberglass batt insulation delivers reliable thermal performance in walls, floors, and ceilings — installed with precision for a complete, consistent thermal envelope.
Energy Efficiency
We go beyond insulation to assess and improve your building's overall energy performance — helping you achieve real savings, improve comfort, and reduce utility bills long-term.
We're not just installers — we're experts who take pride in quality, accountability, and giving every customer a real advantage over the competition.
Watch CoreSeal professionals at work — real projects, real results. This is the quality and attention to detail you can expect on every job.
A full walkthrough showing how CoreSeal transforms a home with professional insulation coverage — from walls to attic, every inch properly sealed and insulated.
Electrical outlets are one of the most overlooked sources of air leakage in homes. Watch how our technicians properly seal them — a small detail that makes a real difference.
Most homeowners don't realize how much energy — and money — escapes through invisible gaps and under-insulated spaces every single day.
Getting your home sealed and insulated by CoreSeal is straightforward. Here's exactly what to expect from first contact to finished installation.
Fill out our quick form or give us a call. Tell us about your home or project and we'll be in touch fast — no waiting, no runaround.
Our team evaluates your space, identifies problem areas, and puts together a clear, detailed estimate with zero hidden fees or surprises.
We work around your schedule and show up on time. No vague timelines, no cancellations — just reliable, professional service when you need it.
Our crew completes the work with precision and care. We clean up after ourselves and leave you with a noticeably more comfortable, efficient home.
We've built our reputation one job at a time — with consistent quality, honest pricing, and workmanship you can count on.
Fill out the form and our team will reach out promptly to review your project. Already have a quote? Bring it — we'll beat it.
We'll review your project and respond promptly — usually within 24 hours.
