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Energy Code - Module 4: Window and Insulation Tables (Climate Zones 6,7,8)

Presentation

Webinar that discusses code requirements found in the prescriptive window and insulation requirements for climate zones 6, 7 and 8.

Instead of solid timber headers over windows, insulated headers can be used consisting of prefabricated structural insulated panels or site-fabricated with two sheets of plywood sandwiching a layer of rigid foam.

Instead of solid timber headers over windows, insulated headers can be used consisting of prefabricated structural insulated panels or site-fabricated with two sheets of plywood sandwiching a layer of rigid foam.

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How To Strengthen Your Home for Under $10,000 – Insulated Concrete Forms

Video

Video interview explaining the benefits of installing insulated concrete forms for both energy efficiency and disaster resistance in either new or existing homes for under $10,000. Recommendations from FLASH Strong Homes.

The rough opening around this window is air sealed and insulated with nonexpanding spray foam.

The rough opening around this window is air sealed and insulated with nonexpanding spray foam.

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Single framed wall converted to double wall and insulated with closed-cell spray foam

Single framed wall converted to double wall and insulated with closed-cell spray foam

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The pulleys in this old window frame were once used for counterbalancing weights to help raise and lower the window; this window can be restored with new pulley ropes or the weight pockets can be insulated with caulk and rigid insulation.

The pulleys in this old window frame were once used for counterbalancing weights to help raise and lower the window; this window can be restored with new pulley ropes or the weight pockets can be insulated with caulk and rigid insulation.

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Wrong – Fibrous insulation is not an air barrier and cannot be used to air-seal openings.

Wrong – Fibrous insulation is not an air barrier and cannot be used to air-seal openings.

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DOE Siding and Windows Retrofit: Insulating Concrete Block Walls, Phoenix AZ

Case Study

Case study describing a wall and window retrofit of a 1940s home in Phoenix AZ that included adding 2 inches of rigid foam and new stucco siding and solar screens as part of a comprehensive retrofit of the concrete block home.

Insulated headers can be hung with metal hangers instead of jack studs to reduce lumber usage

Insulated headers can be hung with metal hangers instead of jack studs to reduce lumber usage

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Wrong - Insulation beneath window is compressed and there are more support studs than necessary to left of window.

Wrong - Insulation beneath window is compressed and there are more support studs than necessary to left of window.

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To get an average whole-wall R value of R-19 with double-pane windows, you’d need R-330 of wall insulation; triple-pane windows can achieve an R-19 total wall R Value with R-38 of insulation

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Extension boxes of plywood built around the windows on this wall retrofit will be flush with the outer layer of exterior rigid insulation

Extension boxes of plywood built around the windows on this wall retrofit will be flush with the outer layer of exterior rigid insulation

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Right – The flashing is properly installed to create a complete drainage system with continuous rigid insulation sheathing/siding

Right – The flashing is properly installed to create a complete drainage system with continuous rigid insulation sheathing/siding

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2021 IECC Window Detail: Framed Wall with Rigid Insulation and Siding (Wood, Fiber Cement, Aluminum or Vinyl)

2021 IECC Window Detail: Framed Wall with Rigid Insulation and Siding (Wood, Fiber Cement, Aluminum or Vinyl)

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Insulating cellular blinds purchased from a manufacturer should contain a blinds assembly, mounting brackets, and mounting screws.

Insulating cellular blinds purchased from a manufacturer should contain a blinds assembly, mounting brackets, and mounting screws.

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Windows are installed as “outies” in this wall assembly using a self-adhered membrane water and air control layer with continuous exterior insulation

Windows are installed as “outies” in this wall assembly using a self-adhered membrane water and air control layer with continuous exterior insulation

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2021 IECC Window Detail: Framed Wall with Thick Rigid Insulation and Siding (Wood, Fiber Cement, Aluminum or Vinyl)

2021 IECC Window Detail: Framed Wall with Thick Rigid Insulation and Siding (Wood, Fiber Cement, Aluminum or Vinyl)

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Triple-pane windows are highly insulating (U=0.18) to slow heat transfer while letting in plenty of sunlight.

Triple-pane windows are highly insulating (U=0.18) to slow heat transfer while letting in plenty of sunlight.

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Install insulating foam sheathing and tape all seams to serve as a continuous drainage plane behind the home’s cladding.

Install insulating foam sheathing and tape all seams to serve as a continuous drainage plane behind the home’s cladding.

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2021 IECC Window Detail: Framed Wall with a WRB, Rigid Insulation, and Siding (Wood, Fiber Cement, Aluminum or Vinyl) or Stucco

2021 IECC Window Detail: Framed Wall with a WRB, Rigid Insulation, and Siding (Wood, Fiber Cement, Aluminum or Vinyl) or Stucco

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When installing insulated vinyl siding around windows, flashing finials should be notched to allow for tabs and corner attachments at each window corner.

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Factory-made interior removable storm windows have a flexible silicon frame press into place to air seal and insulate the existing window.

Factory-made interior removable storm windows have a flexible silicon frame press into place to air seal and insulate the existing window.

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2021 IECC Window Detail: Framed Wall with Plywood or OSB Sheathing, a WRB, Thick Rigid Insulation, and Siding (Wood, Fiber Cement, Aluminum or Vinyl)

2021 IECC Window Detail: Framed Wall with Plywood or OSB Sheathing, a WRB, Thick Rigid Insulation, and Siding (Wood, Fiber Cement, Aluminum or Vinyl)

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Right - New flashing has been installed to complete the air and water control layers at the window openings of this wall retrofit that includes insulating the wall cavities with spray foam

Right - New flashing has been installed to complete the air and water control layers at the window openings of this wall retrofit that includes insulating the wall cavities with spray foam

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Window attachments like insulated blinds, solar screens, and low-e storm windows provide many benefits including heating and cooling savings at a low first cost

Window attachments like insulated blinds, solar screens, and low-e storm windows provide many benefits including heating and cooling savings at a low first cost

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Window coverings like insulated blinds, cellular shades, sun-blocking roller shades, and low-e storm windows can provide heating and cooling energy savings

Window coverings like insulated blinds, cellular shades, sun-blocking roller shades, and low-e storm windows can provide heating and cooling energy savings

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Ultra-efficient, R-9, triple-pane windows have insulated wood frames, argon gas between the panes, and low-emissivity coatings to slow heat transfer.

Ultra-efficient, R-9, triple-pane windows have insulated wood frames, argon gas between the panes, and low-emissivity coatings to slow heat transfer.

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Many older single- and double-hung windows have sash weights and pulleys, a counter-balancing system to help raise and lower windows but difficult to seal and insulate

Many older single- and double-hung windows have sash weights and pulleys, a counter-balancing system to help raise and lower windows but difficult to seal and insulate

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This drawing shows key head details for a window installation using a fluid-applied flashing on a wall with a mechanically attached water and air control layer and continuous insulation

This drawing shows key head details for a window installation using a fluid-applied flashing on a wall with a mechanically attached water and air control layer and continuous insulation

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This drawing shows key jamb details for a window installation using a fluid-applied flashing on a wall with a mechanically attached water and air control layer and continuous insulation

This drawing shows key jamb details for a window installation using a fluid-applied flashing on a wall with a mechanically attached water and air control layer and continuous insulation

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