Framing Gable and Shed Dormers Canandaigua NY

Whenever adding any type of dormer in Canandaigua, it's essential to determine the roof load and design the load path transfer to the existing floor joists or roof rafters. Then you can ensure adequate bearing points, or add framing and install beams to carry the loads through the walls down to the foundation. It wouldn't be a bad idea to consult a structural engineer for guidance, especially on larger dormers.

Local Companies

United Gc Inc
(718) 273-7771
52 Castleton Ave
Staten Island, NY
Secon Inc
(631) 754-5290
52 N Creek Rd
Northport, NY
Tru-Tek Construction
(516) 796-5409
3300 Merrick Rd
Wantagh, NY
Reliable Home Improvements Inc
(631) 732-4064
1 Donna Ct
Selden, NY
Sanjon Inc
(212) 692-0611
420 Lexington Ave Rm 258
New York, NY
National Association of the Remodeling Indstry
(585) 396-9370

Canandaigua, NY
Marshall Dave Inc
(585) 671-2550
816 Maple Dr
Webster, NY
Fisher Fence Co
(718) 356-4354
6 Muriel St
Staten Island, NY
Home Restoration and Construction Corp
(631) 392-0232
62 Seneca Ave
Dix Hills, NY
Cobrapro Inc
(845) 561-5669
244 N Plank Rd
Newburgh, NY

Provided By:

Source: TOOLS OF THE TRADE Magazine
Publication date: July 11, 2006

By TOOLS OF THE TRADE Editors

Whenever adding any type of dormer, it's essential to determine the roof load and design the load path transfer to the existing floor joists or roof rafters. Then you can ensure adequate bearing points, or add framing and install beams to carry the loads through the walls down to the foundation. It wouldn't be a bad idea to consult a structural engineer for guidance, especially on larger dormers.

Gable Dormers

Gable dormers get their name from the gable roof covering them. These dormers are built perpendicular to the existing roof plane, with their ridges extending out from the existing roof. This means the sidewalls of the dormer bear and transfer the weight of the dormer rafters to the existing main roof rafters or the existing floor joists in the room/attic below. Which way you decide to support the dormer loads depends on the interior layout you're shooting for.

Bearing on the Rafters. My first choice is to install double or triple roof rafters on either side of the new dormer for the sidewalls to rest on. This eliminates the need to remove attic subflooring to insert additional joists. It also leaves the area beneath the common rafters uncluttered without any walls to interfere with open space and provides freedom to lay out partition walls later.

I locate the position of the dormer and do as much work as possible inside the attic before opening up the roof.

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