Cost To Build A Gable Porch Roof

A gable porch roof is a very popular choice for homeowners who want to add more space to their homes. This type of roof has many advantages over other types of roofs and can be built on almost any structure. The cost-effectiveness and ease of construction make this type of roofing an attractive option for anyone looking to improve their home’s appearance or functionality. In this article, we will discuss the average cost of building a gable porch roof and how much each step will cost you as well as what materials you will need in order to complete your project successfully.

Gable roofs are one of the most common roof types found on U.S. homes. You can find gable roofs on many architecture types, ranging from ranches to colonials. A gable porch is a type of porch that has two sides and a gable roof. It is a common feature on houses in the United States and it’s usually used as an addition to the front of the house. The side posts are usually made from wood, but sometimes they’re made from stone or metal instead.

The walls of your gable porch should be built at the same height as your main house so that you can easily walk through them without having to duck down or climb up stairs. A gable can be built using rafters or trusses, meaning it is suitable for many housing styles, including those with open floor plans. It is easy to install roofing materials on gable roofs because they typically have moderate pitches. They can also use nearly any roofing material available, from asphalt shingles to metal and slate.

The national average cost to install new roofing on an existing gable roof is $7,000 to $20,000, with most people paying around $9,000 to install 1,500 sq.ft. of standard architectural shingles on a gable roof. This project’s low cost is $4,750 for installing 3-tab asphalt shingles on a 1,500 sq.ft. gable roof. The high cost is $45,000 for an installed 1,500 sq.ft. natural slate cross gable roof.

Building a gable porch roof requires attention to details.

Gable roofs are one of the most common types of porch roofs. A gable porch roof has two sides and a peak that rises in the center, forming three triangular sections. These triangular sections can be flat or sloped and have different angles.

The good news is that, unlike some other types of porches, a gable porch has many variations and they’re all simple to construct. However, there are still certain things to consider when planning this type of structure:

  • First and foremost, make sure you have a solid foundation before beginning construction. A poorly built foundation will cause problems down the road—and not just on your new porch.

How much is a gable roof?

The cost of a gable roof depends on its size, materials, and complexity. The size of the gable is one of the most important factors in determining its cost. A small gable roof can cost you around $500, while large ones can go up to $1,000 or more.

Material costs also play an important role when determining how much it will cost to build a gable porch roof. You should expect to pay around $350-$500 per square foot for shingles or asphalt tiles depending on your choice of material. If you go with metal sheets or zinc-coated steel panels then your average material costs would be closer to $300-$400 per square foot because these materials are cheaper than asphalt tiles or shingles but still provide adequate protection for your home against rainwater leakage and other weather elements like strong winds and sun exposure which could cause damage to your house if left unprotected by proper sealing techniques used during construction such as caulking between joints/seams where two pieces join together such as rafters/trusses forming diagonal patterns with siding boards installed horizontally along trusses; drywall being screwed directly onto studs (vertical) rather than lath boards installed horizontally across studs providing support needed before installing drywall directly onto those studs only after installing sheathing paper over top these first two layers then finally adding 1″ thick insulation batts between layers within walls so radiant heat stays trapped inside instead outside where wind chills temperatures drop quickly leading.

What are the disadvantages of gable roof?

Gable roofs are not as strong as hip roofs, and therefore are not recommended for any application that requires a high wind rating. A gable roof is also less energy efficient than a hip roof because it does not have the same amount of surface area on the interior of your home to absorb heat from sunlight during the day and release that heat into the air at night. Finally, gable roofs have a lower fire resistance rating than some other types of roofs.


Lumber is the backbone of your gable roof. It’s what holds the frame together and lifts it up into the air, so you’re going to want to think carefully about which lumber you use. The most common type of wood used in a gable roof is pine boards because they are affordable, easy to work with, and durable enough for the job at hand.

But how do you know how much lumber to buy? Well, there’s an easy way: math. You can calculate exactly how much lumber you need by taking into account two things: the length and width of your porch (or any other structure that requires a gabled roof). We’ll call these measurements “Depth” and “Width,” respectively. Once we have those two numbers figured out, we can use simple geometry—and a bit more math—to find out exactly how much material we’ll need.


Framing is the most important part of any structure, and it’s also the most expensive. Framing consists of 2×4 or 2×6 pieces of lumber that are nailed together to create a box shape. This can then be used to support the roof rafters and walls in your gable porch.

The framing will act as a base for your roof, and when combined with shingles, you’ll have yourself an awesome new room to enjoy. Remember: if you’re going to do this project right, make sure all your materials are high quality so your home remains strong and durable through all weather conditions.


When you’re building a gable porch roof, you’ll need to consider what kind of decking material you want. The decking is the floor of your gable porch and it can be made from wood, composite or PVC. Wood decking is more expensive than composite or PVC and requires maintenance to keep it looking good. Composite and PVC decks are also more expensive than conventional timber decks, but they require less maintenance over time because they don’t rot or warp like wood does.


Most shingles are held in place by an underlayment, which is a layer of protection between the roof deck and the shingles. Underlayment can be made of asphalt, fiberglass or tar paper. Underlayment is usually installed before any other materials are added to the roof surface, such as shingles or ice and water shield (if needed).


Flashing is a sheet of material that is used to prevent water from getting into the house. It can be made out of many different materials, but the most common are metal, rubber and plastic.

Flashing is placed around the edge of a roof to prevent water from getting in. Flashings also cover gaps between siding and walls to prevent leaks.

Asphalt shingles

Asphalt shingles cost between $1 and $8 per square foot. These numbers are an average of what you can expect to pay for this type of roofing material. The cost will vary depending on the brand, color, thickness and quality of the shingles you choose.

The process of installing asphalt shingles is pretty simple: all you need is a hammer, tape measure and step ladder. If you have any gaps between your rafters in your gable roof structure (for example if it’s a shed-style roof), then you’ll need another set of tools—a nail gun and some furring strips (which are like thin boards). You’ll also need some roofing nails or screws to hold everything together once it’s installed on top of those furring strips.


Nails can be used to attach the roofing materials to the framing. Galvanized nails are preferred for this purpose because they resist rusting and are more expensive than standard nails. Nails should be driven into the framing at a 90-degree angle in order to prevent splitting wood.

The cost of nails depends on their type and size, but on average you can expect to pay about $6 per pound for galvanized box nails, about $4 per pound for galvanized d ring shank common nails and about $5 per pound for galvanized cut nail stock (commonly used in framing).

Labor and Contractor Fees

Labor costs are one of the first expenses you will incur when building a gable porch roof. Labor costs include labor for construction, engineering and architecture, surveying, equipment rental and maintenance, and cleanup after the job is complete.

Contractor fees are another major expense associated with building a gable porch roof. Contractor fees cover all aspects of workmanship performed by subcontractors or in-house employees including material procurement and delivery; project coordination; supervision; installation; testing; cleaning up upon completion of work on site; transportation to/from jobsite (if applicable); disposal of waste materials (composting).

Permits may also be required depending on where you live and plan to build your porch roof. In some areas, permits are not necessary if certain conditions apply but it is best practice to check with local authorities before beginning any construction project as different rules apply depending on who owns the land that will be built upon.

An average gable porch roof can range between $1800 and $9000.

A typical gable porch roof can cost between $1800 and $9000, depending on the complexity of your project. The materials involved in building this type of porch include:

  • Planks for siding and trimming – Cost: $150 to $300 per plank (depending on type)
  • Trim boards for windows, doors and corners – Cost: $0.15 per square foot (approximately)
  • Roofing paper to cover the roof – Cost: Varies by brand but averages around $1 per square foot
  • Gable trim boards that add support to the structure of your porch – Cost: Varies depending on size but averages around $1 per linear foot

In conclusion,

Gable roofs are an affordable and attractive way to add value to your home. They give you the option of making a covered porch or building an extension that you can use for entertaining or even as another room in the house. You can also install skylights on top of a gable roof to let in more natural light and increase your energy efficiency. Building a gable porch roof requires attention to details like underlayment and flashing, but if done properly this type of roof will last for decades without any problems.

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