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Exterior Insulation Added While Your Siding Is Off

Continuous rigid insulation and a taped, sealed weather barrier, installed from the outside so you don't lose a single room to the work.

4Ever exterior insulation work in Massachusetts

A lot of Massachusetts homes were built long before anyone worried about drafts. Walls in a 1920s colonial or a 1950s cape often have little or nothing in the cavities, and old sheathing boards leave gaps you can feel when the wind picks up in January. You turn the thermostat up and the front room still feels cold.

The easiest time to fix that is when your old siding is already coming off. With the walls opened to the sheathing, we can add a layer of continuous rigid insulation across the whole house, then wrap it in DuPont Tyvek HomeWrap with every seam and lap taped and sealed.

You get a tighter house without tearing up a single wall inside. There's no drywall dust to clean up, no furniture to drag into the garage and no painting to do afterward. The new siding goes on over the top, and your family lives in the house the whole time we're working outside.

What's included

  • Old siding torn off down to the sheathing
  • Substrate inspected and photographed before it's covered
  • Damaged sheathing flagged and addressed in writing
  • Continuous rigid insulation fastened across your walls
  • DuPont Tyvek HomeWrap installed over the insulation
  • Every seam and lap taped and sealed
  • Window and door openings flashed so water is turned back out
  • New siding installed per the manufacturer manual

Signs it's time

  • You feel cold air near outlets and baseboards on exterior walls
  • Some rooms never warm up in the winter
  • Your heating bills climb every year with no change in habits
  • Your house has old siding with little or no insulation behind it
  • You're already planning to replace your siding

Why Insulation and Re-Siding Belong Together

Re-siding is the one moment your exterior walls are wide open. The old vinyl, aluminum or cedar comes off, staging is already up and the crew is already there. Adding a layer of rigid insulation at that point costs far less than doing it as its own project later, because the hardest part of the work is already happening.

On a lot of older homes we strip, we find layers. Vinyl over cedar shingle, sometimes asbestos siding in between, and plain board sheathing with gaps behind all of it. We photograph what we find before anything new covers it, so you have a record of your walls and you know what's going back on.

Then the wrap goes on. DuPont Tyvek HomeWrap covers the insulation, every seam and lap gets taped and sealed, and each window and door gets flashed so water heads back out. We can't promise a number on your bills, and we won't. What you will notice is fewer drafts and rooms that hold heat longer.

What we install

  • Continuous rigid insulation over the sheathing
  • DuPont Tyvek HomeWrap weather barrier
  • Seams and laps taped and sealed
  • Flashing at every window and door opening
  • Gentek vinyl or James Hardie fiber cement siding over the top

Pick the job you actually have

Each one gets its own written scope. If your house needs more than one, we sequence them so nothing gets torn up twice.

Why our insulation work holds up

01

Done from the outside

We add insulation over your sheathing, so nothing inside the house gets touched. Your kitchen, bedrooms and finished walls stay exactly as they are.

02

Continuous coverage

Rigid insulation runs across studs, plates and headers in one layer. That covers the framing that cavity insulation can't reach.

03

Seams taped and sealed

Every seam and lap in the Tyvek gets taped and sealed by hand. A weather barrier with open seams lets air and water through, so we don't leave any.

04

Paired with your new siding

Since the siding is coming off anyway, you only pay for one tear-off and one set of staging. Ask us to price it alongside your re-side at the free estimate.

5 years on our work. In writing.

If something fails because of how we installed it, we come back and fix it at no cost. Manufacturer warranties pass straight to you.

How the warranty works

Questions about insulation

Can you add exterior insulation without replacing my siding?

Not really. Continuous rigid insulation goes on over the sheathing, so whatever siding is on your house has to come off first. That's why we recommend it as part of a re-siding project. If your siding still has years left, we'll tell you that instead of selling you a tear-off.

How much will exterior insulation save on my energy bills?

We don't put a percentage on it, because every house is different and honest numbers depend on your heating system, windows, attic and habits. What we can say is that continuous insulation and a taped, sealed weather barrier cut the air leaks and cold spots you feel in winter.

What is DuPont Tyvek HomeWrap?

It's a weather barrier that goes on over your sheathing or insulation, under the siding. It sheds water that gets behind your siding and slows air moving through the wall. We tape and seal every seam and lap, because an open seam lets wind and water straight through.

Will exterior insulation change how my trim looks?

It adds some thickness to your walls, so trim around windows and doors has to be detailed to match. We plan for that in your written estimate, including how openings get extended and flashed, so the finished house looks right and the windows stay watertight.

Is exterior insulation covered by your warranty?

Yes. Like every other job we install, the insulation and weather barrier carry our 5 year workmanship warranty. If something fails because of how we installed it, we come back and correct it at no cost. Manufacturer warranties on the materials pass directly to you.

Brazilian roots.New England weather.

4Ever has Brazilian roots. The jaguar, the biggest cat in the Americas, carries that origin onto every truck, shirt and yard sign. Yellow is its coat. Black is its spots.

It stands for what we want on every wall we close: strength that holds for decades and precision you can check with a level.

  • StrengthMaterials and fastening that last decades.
  • PrecisionMeasured, flashed, taped and sealed.
  • ResilienceBuilt for wind, snow and freeze thaw.
  • TrustWritten scope and insured crews.
  • BrazilWhere the jaguar comes from.

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New England colonial home with charcoal siding, white trim and a composite deck at sunset Multifamily building in progress with 4Ever crews on site

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