A storm panel added to a single or double pane window can cut energy costs in winter by reducing heat loss by as much as 50%. They are also less expensive than low-E, argon filled windows. You can add them to the exterior or interior side of windows.

Exterior Panels

There are two types of exterior storm window panels: single and combination. Single storm panels are made of glass, rigid plastic, or plastic sheeting. You typically put them up in the fall and take them down in the spring. A combination panel consists of two window panes and a permanent screen over the window. In the summer, you can slide one of the panes up and the screen down for ventilation.

Exterior storm window panels need to be custom-made.

Interior Panels

Interior storm window panels consist of flexible (like polyethylene) or rigid plastic. Rigid plastic panels are typically mounted using Velcro, magnetic, or snap-in seals. You can easily install the flexible type in window frames using snap-in retainer seals or double-faced tape. Despite their ease of installation, interior panels are usually not as clear as their rigid counterparts. Flexible panels may also wrinkle or sag after installation.

Heat-shrink film, however, doesn’t wrinkle. This type of flexible film adheres tightly against the seal as it’s heated using a hair dryer.

Interior storm window panels should go up before the heating season and come down before the cooling season. They are more useful for windows with awnings or for those that crank-out, where it’s difficult to use an exterior storm window panel.

Unlike exterior storm window panels, interior panels don’t have to be custom-made to fit windows, though custom-made ones are available from some window suppliers. Therefore, interior panels usually cost less. You can purchase interior panel kits from building suppliers or hardware stores.

Shop at homedepot.ca!

• Awnings

• Blinds

• Draperies

• Solar Films

• Solar Screens

• Overhangs

• Shades

• Shutters

• Storm Panels

• Home

Window Shutters

Window shutters—both interior and exterior—can help cut energy costs by reducing heat gain and loss in your home.

Interior shutters need a clear space to the side of the window when they’re opened. They also require hardware that is fastened to the window jams or trim. Properly designed exterior shutters may provide the best possible window insulation system. They offer several advantages:

• Weather protection
• Added security
• No use of interior space
• No thermal shock to windows if left closed.

Exterior shutters must be integrated into your home’s architecture. Their mounting, drainage, and hinging will require special consideration; it’s easier to address these design issues in new construction.

Most exterior shutter systems include a mechanical crank, rod, or motor to allow operation from indoors. This can help encourage daily use of the shutters, and may be required by local fire codes.

Roll-down metal exterior shutters are often used as protection against storms and/or vandalism. While metal shutters provide protection against these hazards, they don’t provide much of a barrier against air infiltration and heat.

Like window blinds, louvered shutters work best for summer shading. Movable or fixed louvers allow ventilation and natural daylight to enter a room while blocking some direct radiation. However, they won’t provide much insulation against heat loss in the winter.

Solid shutters will decrease both heat loss and summer heat gain. These insulating shutters consist of wood panels, a vapor barrier, and sometimes a decorative covering. If you fit them tightly against a window frame, they’ll provide an insulating air space between the shutter and the window.

You can combine shutters with other window treatments, such as draperies, for greater insulating ability.

Shop at homedepot.ca!

• Awnings

• Blinds

• Draperies

• Solar Films

• Solar Screens

• Overhangs

• Shades

• Shutters

• Storm Panels

• Home

When properly installed, window shades can be one of the simplest and most effective window treatments to cut energy costs.

Shades should be mounted as close to the glass as possible with the sides of the shade held close to the wall to establish a sealed air space. You should lower shades on sunlit windows in the summer. Shades on the south side of a house should be raised in the winter during the day, then lowered during the night.

For greater efficiency, use dual shades—highly reflective (white) on one side and heat absorbing (dark) on the other side—that can be reversed with the seasons. The reflective side should always face the warmest side: outward during the cooling season and inward during the heating season. They need to be drawn all day to be effective.

Quilted roller shades, and some types of Roman shades, feature several layers of fiber batting and sealed edges. These shades act as both insulation and air barrier. They control air infiltration more effectively than other soft window treatments.

Pleated or Cellular Shades

Several manufacturers have designed two- or three-cell pleated or cellular shades with dead air spaces, which increase their insulating value. These shades, however, provide only slight control of air infiltration.

Shop at homedepot.ca!

• Awnings

• Blinds

• Draperies

• Solar Films

• Solar Screens

• Overhangs

• Shades

• Shutters

• Storm Panels

• Home

Properly sized and installed roof overhangs can most effectively shade south-facing windows from the summer heat. If oriented properly, overhangs will allow the sunlight in through the windows during the winter, providing more warmth to a house.

Construction and orientation of an overhang can be tricky since it involves many passive solar design factors:

• Latitude
• Climate
• Solar radiation transmittance
• Illuminance levels
• Window size and type.

It’s easy to incorporate overhangs into a home design before or while it’s under construction. Adding an overhang to an existing home, however, can be quite difficult and sometimes impossible. Window awnings, louvered patio covers, or lattice-type panels can be considered as alternatives for existing homes.

Shop at homedepot.ca!

• Awnings

• Blinds

• Draperies

• Solar Films

• Solar Screens

• Overhangs

• Shades

• Shutters

• Home

• Storm Panels

Solar screen are a thicker and closer webbed than a bug screen. The size of the holes in the webbing determines the amount of solar heat rejection. You cut energy costs because outside screens can reject 80% to 90% of the solar heat. Interior screens can reject 50% to 80% of the solar heat.

Interior screens come in a verity of designs. They can be like a web blind or a roller blind. Roller screens can be motorized and can be controlled either by a wall switch or by remote control. The advantage of the screens over blinds, drapes or curtains, is that you can see through them. Both exterior and interior screens give you daytime privacy.

The screens come in a verity of colors. The best color for exterior screens is black. You can see better through black screens because they reflect less light when looking through them from inside the house.

Interior screens reflect more solar heat if they are a lighter color.

Shop at homedepot.ca!

• Awnings

• Blinds

• Draperies

• Solar Films

• Solar Screens

• Overhangs

• Shades

• Shutters

• Storm Panels

• Home

Solar Window Films

Solar window films help block summer heat gain.

The effectiveness of cutting energy costs by using  reflective films depends on many factors:

• Size of window glazing area
• Window orientation
• Climate
• Building orientation

Silver, mirror-like films typically are more effective than the colored, more transparent ones. East, south and west-facing windows, because of their greater potential for heat gain, can benefit more from these films.

North-facing windows won’t really benefit from reducing solar heat gain. However solar film reduces 99.9% of harmful UV rays from light which in turn reduces fading of furniture and furnishings. They also give you daytime privacy.

Solar film also acts like a low-emissivity film which will reduce about 15% of the radiant heat from escaping through the windows in the winter time

These films have some overall disadvantages:

• Some loss of interior light
  
• Extra care required for cleaning
• Reflections.

These reflective films are available to apply yourself over existing windows. The installation can be very tricky. It is recommended an expert install the film.

Shop at homedepot.ca!

• Awnings

• Blinds

• Draperies

• Solar Films

• Solar Screens

• Overhangs

• Shades

• Shutters

• Storm Panels

• Home

A drapery’s ability to reduce heat loss and gain depends on several factors, including fabric type (closed or open weave) and color. With such a wide variety of draperies available, it’s difficult to generalize about their energy performance.

In the summer during the day, you should close draperies on windows receiving direct sunlight to prevent heat gain. According to the University of Florida, medium-colored draperies with white-plastic backings have been found to reduce heat gains by 33%. Draperies also stay cooler in the summer than some other window treatments because their pleats and folds lose heat through convection.

When drawn during cold weather, most conventional draperies can reduce heat loss from a warm room up to 10%. Therefore, in winter, you should close all draperies at night, as well as draperies that don’t receive sunlight during the day.

To reduce heat exchange or convection, draperies should be hung as close to windows as possible. Also let them fall onto a windowsill or floor. For maximum effectiveness, you should install a cornice at the top of a drapery or place the drapery against the ceiling. Then seal the drapery at both sides and overlap it in the center. You can use Velcro or magnetic tape to attach drapes to the wall at the sides and bottom. If you do these things, you may reduce heat loss up to 25%.

Two draperies hung together will create a tighter air space than just one drapery. One advantage is that the room-side drapery will maintain around the same temperature as the interior space, adding to a room’s comfort.

Shop at homedepot.ca!

• Awnings

• Blinds

• Draperies

• Solar Films

• Solar Screens

• Overhangs

• Shades

• Shutters

• Storm Panels

• Home

Window blinds—vertical or horizontal slat-type—are more effective at reducing summer heat gain than winter heat loss.

Interior Blinds

Because of the numerous openings between the slats, it’s difficult to control heat loss through interior window blinds, but the slats offer flexibility in the summer. Unlike shades you can adjust the slats to control light and ventilation. For example, when completely closed and lowered on a sunny window, highly reflective blinds can reduce heat gain by around 45%. They can also be adjusted to block and reflect direct sunlight onto a light-colored ceiling. A light-colored ceiling will diffuse the light without much heat or glare.

Exterior Blinds

Exterior roller blinds are usually made of wood, steel, aluminum, or vinyl. They’re mounted above the window. Side channels guide them as they’re lowered and raised. When you lower these blinds completely, their slats meet and provide shade. If partially raised, the blinds allow some air and daylight to enter through windows.

Shop at homedepot.ca!

• Awnings

• Blinds

• Draperies

• Solar Films

• Solar Screens

• Overhangs

• Shades

• Shutters

• Storm Panels

• Home

Window awnings can cut energy costs by reducing  solar heat gain in the summer by up to 65% on south-facing windows and 77% on west-facing windows. You can use an awning to shade one window or have an awning custom-made to shade the entire side of your house.

In the past, most awnings were made of metal or canvas, which need to be re-covered every five to seven years. Today, awnings are made from synthetic fabrics—such as acrylic and polyvinyl laminates—that are water-repellent and treated to resist mildew and fading. Whatever the fabric, you should choose one that is opaque and tightly woven. A light-colored awning will reflect more sunlight.

Awnings require ventilation to keep hot air from becoming trapped around the window. Grommets (eyelets) or other openings along the tops and sides of an awning can provide ventilation. The awning may also open to the sides or top to vent hot air.

A small, horizontal awning will completely shade a south-facing window during the summer. An east- or west-facing window needs an awning that extends down to cover a large percentage of the window. Sideless awnings, called Venetian awnings, can be adjusted as the angle of the sun changes. Venetian awnings, however, are usually not effective at blocking direct sunlight on south-facing windows. Hood awnings with sides added to block out additional sun are more effective. Hip awnings project out and down to accommodate casement windows that open outwards.

You can roll up adjustable or retractable awnings in the winter to let the sun warm the house. New hardware, such as lateral arms, makes the rolling up process quite easy.

Shop at homedepot.ca!

• Awnings

• Blinds

• Draperies

• Solar Films

• Solar Screens

• Overhangs

• Shades

• Shutters

• Storm Panels

• Home

You can choose window treatments or coverings not only for decoration but also for saving energy. Some carefully selected window treatments can reduce heat loss in the winter and heat gain in the summer. They include the following:

• Awnings

• Blinds

• Draperies

• Solar Films

• Solar Screens

• Overhangs

• Shades

• Shutters

• Storm Panels

Window treatments, however, aren’t effective at reducing air leakage or infiltration. You need to caulk and weatherstrip around windows to reduce air leakage.

Shop at homedepot.ca!

• Home

• Back