Framing Gable and Shed Dormers Riverhead NY

Whenever adding any type of dormer in Riverhead, 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

AA Home Improvements
(631) 591-2516
29 Rabbit Run
Riverhead, NY
Profile Sales
(631) 727-7721
33 Woodroad Trl
Riverhead, NY
Earth Building & Supplies
(845) 258-1335
25 Mountainside Rd
Pine Island, NY
Upright Builders Inc
(607) 771-5496
1507 Teed Hill Rd
Masonville, NY
Cis Account
(914) 968-2624
292 Sarles Ln
Pleasantville, NY
Commercial Roof Service@1800FLATROOF
(800) 352-8766
800 Burman Blvd PO Box816
Calverton, NY
Home Depot Inc the
(631) 284-2530
1550 Old Country Rd
Riverhead, NY
Folk Gregory
(631) 208-1414
460 Pleasure Dr
Riverhead, NY
Skillcraft
(516) 897-8500
12 Quebec Rd
Island Park, NY
Combria Quality Remodeling Corp
(718) 759-0466
545 8th St
Brooklyn, 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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