Framing Gable and Shed Dormers Liverpool NY

Whenever adding any type of dormer in Liverpool, 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

American Roofing
6984 Old Quarry Road
Fayetteville, NY
Affordable Quality Constr
(315) 395-6168
8477 Grandview Dr
Cicero, NY
Chase-Pitkin Home & Garden
(315) 622-4896
3965 State Route 31
Liverpool, NY
Chase-Pitkin Home & Garden
(315) 701-3270
4999 W Taft Rd
Liverpool, NY
New Way Remodeling
(718) 805-3900
1318 Hempstead Tpke
Elmont, NY
Roofman
315-263-1000
2533 Lafayette Road
Lafayette, NY
Regal Roofing Co
(315) 263-1800
PO Box 182
Camillus, NY
Over The Top Roofing
(315) 564-6938
400 County Route 7
Hannibal, NY
Bay Builders
(315) 475-1070
7550 Elmcrest Rd
Liverpool, NY
E-Mac Enterprises
(315) 451-1254
111 Green Acres Dr
Liverpool, NY
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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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