---
title: "Insulation & Air Sealing"
url: https://bkgreenstone.com/topics/insulation-and-air-sealing/
description: "How heat and air actually leave an older house, and what changes inside a wall or roof once you slow them down."
---

# Insulation & Air Sealing

## All topics

- IN[Insulation & Air Sealing](https://bkgreenstone.com/topics/insulation-and-air-sealing/)
  - [Where air leaks hide in an old house](https://bkgreenstone.com/articles/where-air-leaks-hide-in-an-old-house/)
  - [Insulating a brick wall from the inside](https://bkgreenstone.com/articles/insulating-a-brick-wall-from-the-inside/)
  - [Attic and roof insulation basics](https://bkgreenstone.com/articles/attic-and-roof-insulation-basics/)
- WD[Windows & Doors](https://bkgreenstone.com/topics/windows-and-doors/)
- HV[Heating & Ventilation](https://bkgreenstone.com/topics/heating-and-ventilation/)
- PW[Plumbing & Water](https://bkgreenstone.com/topics/plumbing-and-water/)
- ME[Masonry & Exterior](https://bkgreenstone.com/topics/masonry-and-exterior/)
- MF[Millwork & Finishes](https://bkgreenstone.com/topics/millwork-and-finishes/)

## Reference sheets

- [Nominal lumber sizes](https://bkgreenstone.com/reference/nominal-lumber-sizes/)
- [Fastener and pilot sizes](https://bkgreenstone.com/reference/fastener-and-pilot-sizes/)
- [Insulation material guide](https://bkgreenstone.com/reference/insulation-material-guide/)

How heat and air actually leave an older house, and what changes inside a wall or roof once you slow them down.

A wall section read from outside in: outer masonry, the batten zone, the insulation, the continuous air barrier, and the internal finish.

## Notes filed under this topic

- [Where air leaks hide in an old house](https://bkgreenstone.com/articles/where-air-leaks-hide-in-an-old-house/) last worked on 2015-03-11
- [Insulating a brick wall from the inside](https://bkgreenstone.com/articles/insulating-a-brick-wall-from-the-inside/) last worked on 2015-02-02
- [Attic and roof insulation basics](https://bkgreenstone.com/articles/attic-and-roof-insulation-basics/) last worked on 2014-11-19

[Back to all topics](https://bkgreenstone.com/topics/)