Framing Gable and Shed Dormers Spring Valley NY

Whenever adding any type of dormer in Spring Valley, 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

J Salvatore & Sons Inc.
(914) 237-2943
1187 Yonkers Ave
New York, NY
DOVCON Inc.
201-935-6679
P.O. Box 366
Carlstadt, NJ
First Housing Management, Inc.
(973) 340-1616
106 Route 46 East
Saddle Brook, NJ
Accomplished Chimney, Inc.
(973) 423-5933
960 Belmont ave
North Haledon, NJ
Bdw Roofing Llc
(914) 218-8820
153 E Main St # D5
Mt Kisco, NY
Carlson Bros Inc
201-796-7374
5-02 Banta Pl
Fair Lawn, NJ
C.C.ROOFING CO INC.
(914) 592-3427
137 S. SAW MILL RIVER RD.
ELMSFORD, NY
American Eagle Exteriors Llc
973-838-4505
284 Hamburg Tpke
Riverdale, NJ
Mms Moving Service
201-282-5051
17 Dora Ave
Waldwick, NJ
Kovach Roofing Co
(973) 785-2175
225 Boulevard
Pompton Plains, NJ
Data Provided by:
    

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.

Click here to read full article from Tools of the Trade