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Functional Louvers

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round louvers with keystone
louvers with keystone
Round Louvers with Keystone functional full round louvers
functional round louvers
Full Round Louvers
available in 2 sizes:

FLG730 - 30"Dia
FLG736 - 36"Dia
available in 7 sizes:

FLG716 - 16"Dia
FLG719 - 19"Dia
FLG722 - 22"Dia
FLG724 - 24"Dia
FLG725 - 28"Dia
FLG726 - 30"Dia
FLG727 - 36"Dia
functional round top louvers Round Top Louver octagonal louvers Octagonal Louvers
louvers FLG2436


24"W x 36"H x 1-3/4"D


round top louvers functional
available in 2 sizes:

FLG819 - 19"W x 19"H
FLG820 - 20-1/4"W x 20-1/4"H


round louvers decorative
oval louver Oval Louver oval louver with keystones Oval Louver with Keystones
louvers FLG334


22-5/8" x 34-3/4"H x 1-3/4"D


oval louvers functional
louvers FLG335


31" x 38"H x 2-5/8"D


functional oval louvers with keystone
functional peak louvers Peak Louvers functional  rectangular louvers Rectangular Louvers
louvers FLG1830PK


18"W x 30"H x 2"D


peak louvers
louvers FLG528


19-3/4"W x 28-5/8"H x 1-3/4"D


rectangular louvers
vented louvers Vented Louvers functional vented louver Vented Louver
available in 2 sizes:

FLG936 - 10"W x 35-5/8"H
FLG928 - 19-5/8"W x 28-5/8"H


vented louvers
louvers FLRT1036


10"W x 36"H x 1-1/4"D


vented louver
keystone for functional louvers Keystone half round louvers
louvers half round
Half Round Louvers
keystones G901

3"W x 2-7/8"H x 2-5/8"D


keystone
available in 2 sizes:

FLG624
23-15/16"W x 11-15/16"H

FLG648
48-5/16"W x 28"H
rough sawn louvers

Rough Sawn Louvers

rough-sawn rectangular louvers Rectangular Louvers rough-sawn round top louvers Round Top Louvers
louvers RLG580/RLG590

20"W x 29-3/4"H x 2-1/8"D


round louvers rough-sawn
louvers RLG980/RLG990

21-7/8"W x 30-3/4"H x 2-1/8"D


round louvers rough-sawn
round louvers Round Louvers half round rough-sawn louvers Half Round Louvers
louvers RLG780/RLG790

22"Dia x 1-3/4"D


round louvers rough-sawn
louvers RLG680/RLG690

31-3/4"W x 15-7/8"H x 2-1/8"D


round louvers rough-sawn
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VENTILATION LOUVERS
louvers
functional louvers

Functional Ventilation Louvers and Roof-Venting Trim

A roof has to breath, which means that it has to allow air to pass through the attic and under the roof sheathing to keep the sheathing and the framing members from rotting. Without this air movement, condensation alone could cause serious damage. In the old days, house construction was much looser than it is today. As a result, more air could move through the structure and keep everything reasonably dry. As soon as houses started to tighten up, they started to have trouble. When fastidious use of caulk, vapor barriers, and insulation became the fashions of the day, people began to understand that tighter is not always better.

The only trim components that regularly involve ventilation are gable vents and soffit vents. Gable ventilation louvers come in round, triangular, and rectangular units that are made of high density exterior grade polyurethane. These ventilation louvers are installed in the gable ends, just below the roof ridge. Air moving across one louver will pull air from the attic. The air that leaves is replaced with new air coming in through the ventilation louver on the opposite gable end. You can either paint louvers to blend in with the house's siding or make it stand out as a decorative element.

As mentioned earlier, in an old house ventilation louvers usually provide enough ventilation. But in newer, tight houses, soffit ventilation is also required. Soffit vents are installed in the eave overhangs and allow air to wash under the sheathing. These vents have to be used in conjunction with other vents, such as gable, roof, or continuous ridge vents, or they won't work.

LOUVERS