Framing Gable and Shed Dormers Mount Kisco NY

Whenever adding any type of dormer in Mount Kisco, 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

A&J Reliable Inc.
845-356-3886
39 South Central ave
Spring Valley, NY
Kael Roofing
203-531-8136
128 N. Water St
Greenwich, CT
ERM Home Improvement
(914) 752-5096
8 Rathbun Ave.
White Plains, NY
Fisher Brothers Roofing
(914) 968-2666
1280 Saw Mill River Rd
Yonkers, NY
On Time Remodeling, Corp
(845) 825-4470
94 lake st
Spring Valley, NY
Advanced roofing & contracting corp.
(845)362-5221
p.o. box 349
Pomona, NY
Maine Touch Roofing
(203) 855-1040 or (203) 943-5290
3 Holmes Street
Norwalk, CT
M. Gottfried, Inc.
203-323-8173
89 Research Drive
Stamford, CT
Mario Vitti Contracting Inc
(914) 698-6777
313 Halstead Ave
Mamaroneck, NY
K M Roofing & Siding
(203) 854-4714
18 Avenue B, # 2
Norwalk, CT
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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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