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Self-draining Sill Pans Sealing Wire and Plumbing Penetrations

Even these small holes can add up to serious energy losses in the average home. See what sealants work best, and learn some good tips in for plugging them up tight.

Sill Pan Flashing Options Sealing a Ceiling Electrical Box

Even though light fixtures fasten tight to the ceiling, there's enough of a gap to let air flow through the many holes in a typical electrical box.

Sill Pan With Flexible Peel-and-Stick Sealing Wall Intersections

Conditioned air moving through light switches and other wall penetrations can find its way into the attic too. Seal where the drywall meets the top plates to solve this problem.

Materials overview Bonus: Materials Overview

Get a quick review of the most common sealants — plus a few uncommon options — for sealing up holes big and small.

Flashing Pre-Cased Jambs Sealing Ductwork

It's a good idea to keep all ducts in conditioned space, but if you can't, you should at least stop them from pulling dirty air from your attic into your living space.

Head Flashing Windows/Doors Sealing Soffits and Chases

Soffits and other large ceiling penetrations are essentially unintentional air ducts. Learn how to fit and seal foam to close up even the biggest holes in your attic.

Insulation Ventilation in Rafter Bay Better Insulation Ventilation in Rafter Bays

See two ways to keep air flowing from your soffit vents to your vented attic if you're planning to add blown-in insulation between your ceiling joists.

Improving Attic Knee-Wall Insulation Improving Attic Knee-Wall Insulation

Learn how to enclose the back side of a knee wall with an air barrier to make batt insulation perform better.

Mike Guertin

Mike Guertin
Mike Guertin has been a Fine Homebuilding contributing editor since 1996. A builder and remodeler from East Greenwich, R.I., Mike is constantly testing new ideas and writing about his experience to help make our homes better and our jobs easier.





FURTHER RESOURCES ON FineHomebuilding.com

install blown-in insulationVIDEO: Adding Blown-In Fiberglass Insulation
Less dusty than cellulose, blown-in fiberglass increases R-value and installs quickly

Airtight Attic Access
Hot air rises. And where does it go? It could be going right out the attic access in your house.

Making Sense of Caulks and SealantsMaking Sense of Caulks and Sealants
Today's products adhere better, stretch farther, and last longer, but choosing the best one is harder than ever

Does Fiberglass Still Make Sense?
Maybe, but other types of insulation offer installation advantages that make them more reliable

insulation cost calculator Payback Estimator:
Insulation Upgrade

Find out how long it will take to payback your investment in terms of savings in energy costs.

The Inspector Game:
Spray-foam Slip Ups

Find ways to improve prep, process, and personal protection, for this insulation installation

FROM GREEN BUILDING ADVISOR

Air Leaks Waste Energy and Rot Houses
stop air leaks and save energy One third of the energy you pay for probably leaks through holes in your house. Air leaks can also cause moisture and indoor air quality problems.

Insulation Options
Batts, blown-in, spray foam, or rigid foam — the right choice depends on the job at hand.

Air-Sealing Tapes and Gaskets
Which products stay sticky and flexible?

Sealing Ducts: What’s Better, Tape or Mastic?
Make sure you choose products that provide durable sealing


Cut Your Energy Bills NowInsulate and Weatherize

 In this completely revised and expanded edition, the advances in science and technology shine brightly to walk homeowners through the many solutions for basic energy, air-flow problems, heating and cooling systems, appliances and lights, mixed climate issues, and alternative energy strategies that are doable and extremely efficient

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