Is air sealing necessary, or can I just add insulation?

Air sealing is often essential. If leaks stay open, air can bypass insulation. Sealing first usually delivers the best comfort improvement.

Insulation

Insulation & Air Sealing

Stop drafts and hot/cold rooms with targeted insulation and air sealing. We find where your home is leaking air, then seal and insulate the right areas for real comfort and better efficiency.

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Step-by-Step

Herts Insulation Process

Step-by-Step

Every project includes:

This process is how we deliver results that last.

You’ll receive a clear written scope with material options, before-and-after photo documentation, and warranty details with simple maintenance tips.

What Our Customers Are Saying

From roofs to windows, we protect your home with premium materials and expert craftsmanship.

      EXCELLENT  
   Based on 115 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Jake Levine 
 
 
 
 Trustindex verifies that the original source of the review is Google. Jimmy was our rep and I couldn’t speak more highly of Jimmy and the Herts team. I had a leak in my house which stemmed from the snow building up on the roof and leaking into the insulation in my house. With the service I also have a 2 month guarantee and if there is another snow storm they will come remove any build up. Highly recommend Herts as the customer service was a 10/10 as well as the job.
  
 
      Posted on Google  
   
   Angelica Johnson 
 
 
 
 Trustindex verifies that the original source of the review is Google. Thanks you Herts Roofing for an awesome job on my home.. my Roof looks great... it was hard to find a good reputable company, your process was seamless and to the point....
  
 
      Posted on Google  
   
   Daniel Baron 
 
 
 
 Trustindex verifies that the original source of the review is Google. I had a minor leak during a rainstorm today and herts, specifically Joshua was an absolute pleasure to work with. They came out same day to assist and explained the whole process and what to expect. Herts has earned my business going forward and my referrals to all who ask.
  
 
      Posted on Google  
   
   Nii Dior 
 
 
 
 Trustindex verifies that the original source of the review is Google. I had the pleasure of obtaining services from Herts Roofing! They were reliable, skilled, and efficient. Herts Roofing exceeded my expectations!
  
 
      Posted on Google  
   
   Lisa Giamella 
 
 
 
 Trustindex verifies that the original source of the review is Google. Everyone I dealt with at Herts was extremely accommodating and professional. My roof repair was done quickly and when it fit in best in my schedule.
  
 
      Posted on Google  
   
   supahot beastytv 
 
 
 
 Trustindex verifies that the original source of the review is Google. Herts Roofing was a referral from a family member. I’m so glad I decided to go with this company. From start to finish they provided excellent communication and professionalism.
  
 
      Posted on Google  
   
   Larry Ashley 
 
 
 
 Trustindex verifies that the original source of the review is Google. My daughter  referred  me to this company because they have a great experience and very professional and attentive  to my concerns
  
 
      Posted on Google  
   
   Ashley Bethea 
 
 
 
 Trustindex verifies that the original source of the review is Google. Herts Roofing did an awesome job! Super professional and easy to work with. I highly recommend them!
  
 
      Posted on Google  
   
   jaden 
 
 
 
 Trustindex verifies that the original source of the review is Google. Super impressed with the quality of work and attention to detail. Herts Roofing was punctual, professional, and communicated clearly throughout the process. Highly recommend their services!
  
 
      Posted on Google  
   
   Daniel Manuel 
 
 
 
 Trustindex verifies that the original source of the review is Google. Herts Construction was very professional and informative with every step of the way of my project. Very reliable and I will utilize this company for future projects.
  
 
  
  
 
     Verified by Trustindex  Trustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more

Insulation & Air Sealing

Stop drafts, reduce hot/cold rooms, and make your home feel steady year-round. We inspect where air is leaking, then insulate and seal the right areas for real comfort—not just “adding more fluff.”

Call/Text: (908) 206-4240 Get a Free Insulation Quote Financing Options

Draft & Comfort Focus
Fix the cause, not symptoms

Clean Work
Protect floors + tidy cleanup

Attics • Walls • Crawlspaces
Target the right areas

Honest Recommendations
No upsell pressure

Signs Your Home Needs Better Insulation

Most insulation problems show up as comfort issues first. If any of these sound familiar, it’s time for an inspection.

Rooms that are always hotter/colder than the rest of the house
Drafts near windows, baseboards, outlets, or attic access
High heating/cooling usage even when systems are working fine
Cold floors over a crawlspace or unconditioned basement
Condensation issues (especially around colder exterior surfaces)
Ice dam concerns (often tied to attic heat loss + air leaks)

What We Improve (Most Common Areas)

Area	Why it matters	Typical improvements
Attic	Biggest heat loss/gain zone	Air sealing + blown-in/batt upgrades + hatch sealing
Rim Joist	Major draft pathway	Seal gaps + insulate for comfort at floors
Crawlspace	Cold floors + moisture risk	Insulate/seal as appropriate + ventilation/moisture strategy
Walls	Hard-to-fix hot/cold rooms	Blown-in insulation where possible
Duct/Chase leaks	Pulls attic air into the home	Seal penetrations + improve pathway barriers

Insulation Basics (Simple Explanation)

R-ValueHow well insulation resists heat flow (higher generally insulates better).

Air SealingStopping leaks often matters as much as adding insulation.

Moisture ControlInsulation works best when the area stays dry and properly managed.

Tip: If air leaks are left open, insulation alone can underperform—especially in attics and rim joists.

Cost & What Affects Pricing

Pricing depends on: square footage, access, removal of old material, air-sealing needs, moisture issues, and the insulation type used.

Attic size + depth needed
Number of penetrations to seal (lights, pipes, chases)
Existing insulation condition (dirty, compressed, wet)
Crawlspace conditions (access + moisture)
Material choice (batt, blown-in, spray foam)

Free Insulation Quote

Call/text (908) 206-4240 or request a quote online. We’ll explain options and focus on what actually improves comfort.

Call/Text Now Request Quote

Insulation Quote Checklist Reference-Worthy

Use this checklist to compare estimates fairly:

Areas included (attic, walls, crawlspace, rim joist)
Air sealing scope (what leaks get sealed and how)
Insulation type (blown-in, batt, spray foam) and where it will be used
Target depth/coverage (clear plan, not vague “add insulation”)
Old material (is removal included if needed?)
Moisture plan (how damp areas are handled)
Ventilation plan (especially in attics/crawlspaces)
Cleanup & disposal (bagging, haul-away, dust control)
Warranty (workmanship + material handling)
Timeline (start date + how long the job takes)

Quick rule: If the quote doesn’t clearly include air sealing + coverage plan, you’re not comparing the same job.

Insulation Types Comparison (Quick Guide)

Type	Best For	Pros	Watch-outs
Blown-In (Cellulose/Fiberglass)	Attics + topping off existing insulation	Great coverage around obstacles; fast installation	Needs correct depth; air sealing should be done first
Fiberglass Batts	Open wall/ceiling cavities during remodel	Affordable; straightforward when cavities are open	Gaps/compression reduce performance if installed poorly
Spray Foam	Rim joists + tricky leak zones	Excellent air sealing + insulation in one step	Higher cost; must be applied correctly and safely

The 3 Things That Decide Insulation Results Cite-able

1) Air sealing first If leaks stay open, insulation can’t perform the way it should—especially in attics and rim joists.

2) Full, even coverage Gaps, thin spots, and compressed insulation create comfort problems and wasted energy.

3) Moisture control Wet insulation underperforms. The right moisture/ventilation strategy protects your investment.

Our Insulation Process (What to Expect)

Inspection
We identify drafts, weak spots, and the best target areas.

Air Sealing
Seal penetrations and leaks before adding insulation.

Insulation Upgrade
Install the right material to the planned coverage depth.

Walkthrough
Review improvements, photos (if taken), and next steps.

Insulation FAQ (Top Homeowner Questions)

How do I know if my home needs more insulation?

Drafts, uneven temperatures, cold floors, and high HVAC usage are common signs. A quick inspection can confirm where the biggest losses are (often attics and rim joists).

Is air sealing really necessary, or can I just add insulation?

Air sealing is usually the “multiplier.” If leaks stay open, warm/cool air can bypass insulation. Sealing first often delivers the best comfort improvement.

What insulation type is best for an attic?

Many homes do well with blown-in insulation in the attic, especially after proper air sealing. The best choice depends on access, existing conditions, and your goals.

How much does insulation cost?

Cost depends on the areas included, square footage, access, material type, and whether old insulation removal or moisture work is needed. We provide a clear scope so you can compare fairly.

Will insulation help with ice dams?

It can—ice dams often relate to heat escaping into the attic. Air sealing and proper attic insulation can reduce heat loss that contributes to uneven roof melting.

How long does an insulation job take?

Many insulation projects can be completed quickly depending on scope and access. Larger homes or jobs involving removal/repairs take longer.

Ready to Fix Drafts and Hot/Cold Rooms?

Call/text (908) 206-4240 or request a quote online. We’ll focus on the areas that deliver the biggest comfort improvement.

Call/Text: (908) 206-4240 Request a Quote See Reviews

Herts Roofing & Construction • YOUR_ADDRESS, YOUR_CITY, YOUR_STATE YOUR_ZIP • (908) 206-4240 • YOUR_EMAIL

Our Exterior Services

Everything your home needs—handled by one experienced, local team.

Roofing:

Repairs, replacements and storm damage solutions.

Learn More

Siding:

Vinyl& fiber cement siding installation and repair.

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Gutters:

Seamless gutters, replacements and cleaning.

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Decking:

Wood & composite decking, inspections and rebuilds.

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Insulation:

Protect your home & improve energy efficiency.

Learn More

Windows:

Energy-efficient replacements for improved insulation.

Learn More

Why Homeowners Choose Herts Roofing NJ

Working with us means less stress, faster service, and long-term peace of mind.

Fully licensed & insured NJ exterior team

Fast response times & reliable scheduling

Clear pricing with no surprise add-ons

Premium materials from trusted manufacturers

Strong labor & manufacturer warranties

One contractor for all exterior needs

Proven Results
Across New Jersey

Herts Roofing NJ combines experience, skill, and customer-first service to deliver consistent results.

Completed Projects

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Average Google Rating

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Years In Business

Insulation

Insulation & Air Sealing

Get a new roof now& delay the payments!

Siding Replacement in New Jersey Built for Harsh Weather

Signs you need siding replacement NJ homeowners should not ignore

Step-by-Step

Herts Insulation Process

Step-by-Step

This process is how we deliver results that last.

What Our Customers Are Saying

Insulation & Air Sealing

Signs Your Home Needs Better Insulation

What We Improve (Most Common Areas)

Insulation Basics (Simple Explanation)

Insulation Types Comparison (Quick Guide)

The 3 Things That Decide Insulation Results Cite-able

Our Insulation Process (What to Expect)

Insulation FAQ (Top Homeowner Questions)

Ready to Fix Drafts and Hot/Cold Rooms?

Our Exterior Services

Roofing:

Siding:

Gutters:

Decking:

Insulation:

Windows:

Why Homeowners Choose Herts Roofing NJ

Fully licensed & insured NJ exterior team

Fast response times & reliable scheduling

Clear pricing with no surprise add-ons

Premium materials from trusted manufacturers

Strong labor & manufacturer warranties

One contractor for all exterior needs

Proven Results Across New Jersey

Need Exterior Work Done Right?

Licensed & Insured NJ Contractor

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Get a new roof now
& delay the payments!

Proven Results
Across New Jersey