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How to Build a Gable Porch Roof on Your Own in 7 Steps

how to build a gable porch roof on your own in 7 steps

The gable porch roof is a popular design for homes and is built on your own gable porch roof in 7 steps.

This post will show you how to set up the foundation, frame the exterior walls, attach the rafters to the top of each wall, install shingles or siding material on the roof’s exterior surface, add gutters and downspouts at various points along its perimeter.

Finally we’ll talk about how to maintain your new home improvement project by periodically checking for signs of wear and tear.

What is a Gable Porch Roof?

The gable porch roof is a very simple design. This type of porch roof is basically a triangular structure that covers one or more porches. 

The building materials used to construct the gable porch roof are usually pre-fabricated, which means they have been cut and shaped to fit together at right angles, but there may be instances where you may need to use an angle grinder or other tools to cut and shape your own pieces.

Gable porch roofs are typically supported by walls on two sides, with the roof extending over one open side. Because of their simplicity, gable porch roof designs can be easily altered to suit your needs.

gable roof over porch contractor

Things to consider before building a Gable Porch Roof

People have different reasons for building a Gable Porch Roof on their own.

Some of them need it for adding space to the house, while some simply want to save money by doing it themselves.

Whatever be your purpose, you must keep these few things in mind before starting the work:

  • Draw up plans – A lot can go wrong if you do not plan things before executing them.
    • Therefore, it is essential to take out some time and draw up plans for the construction.
    • You can also hire an architect for this purpose; however, your effort will be wasted if the design does not suit your house.
  • Work with quality materials– If you are spending time and money on building a Gable Porch Roof, do not compromise with the quality.
    • You cannot expect the roof to last for years if you use low-grade materials and shoddy workmanship in its construction.
  • Look for additional features– Many homeowners include features like skylights, lofts, etc. in their porch roofs so that they can serve as an extra bedroom or seating area.
    • If you want to build such a roof for your house, look for roofing contractors in Baltimore who can give you additional information on this.
  • Look at the total cost- Unless you are ready to spend $10,000 or more on building a Gable Porch Roof , it is advisable to stick to the basics.
    • Remember, the more features you add on, the more you will have to shell out money.
  • Schedule your work– If you are doing this project during summer or winter when it is very hot or cold outside respectively, do not start working immediately after thinking about it.
    • It is best to schedule things around your own comfort.
  • Keep the kids and pets indoors– If you have young children or pets at home, it is best to keep them indoors during this project.
    • While no construction work is completely accident-proof, this one needs special attention as kids can get hurt by falling tools or getting trapped in piles of debris.
    • Pets can also get hurt or lost if they wander into a construction site.
  • Follow safety guidelines– If you want to bring down the risks associated with this project, do not compromise on safety rules.
    • Work with a roofing company that installs roofs according to local building codes and has an excellent safety record so that your kids, pets and visitors can enjoy the Gable Porch Roof for years to come.
Typical Dutch gable house

How to Build a Gable Porch Roof on Your Own in 7 Steps

1) Preparing the foundation –  First, make sure to prepare the groundwork for your gable porch roof. Set up strong support beams on the ground with screws and metal plates.

The foundation should be strong enough to withstand heavy winds or even earthquakes.

2) Frame – Once your foundation is set up, you can now start framing out your porch roof using 4″ x 4″ wooden beams.

Make sure to frame them in a triangular shape and to secure them with screws.

3) Rafters – After the porch’s foundation has been set up, you may now start building its rafters.

You can make your rafter beams using wooden boards of 2″ x 6″ size. Join the rafter beams at their ends using a triangular-shaped connection. Remember to leave a gap of 2″ between the rafters.

4) Supporting beams – The porch roof’s supporting beams should be made from strong wooden boards.

Make sure to join these with metal plates and screws so they’ll be as good as new after heavy winds or earthquakes.

5) Placing your rafters – Now, you can now place the rafters on top of the supporting beams. Join them with strong screws and make sure to leave a 1/2″ gap between the rafters.

6) The roof’s sheathing – You may now install thin wooden boards as your gable porch roof’s sheathing . Leave a 1/2″ gap between each of the boards.

7) The roofing – Lastly, your gable porch roof can already be covered with any waterproof material that you desire.

You may use aluminum sheets for this purpose. Aluminum is also sturdy enough to handle most weather conditions without easily being destroyed or damaged.


If you are still unsure how to build a gable porch roof on your own, then you can always hire an expert to do the job for you.

If that’s not an option, you can always check out videos or books that show step-by-step instructions on how to do it correctly.

But if this is your first time doing it, then it’s best to get some help from an expert. 

Medieval gabled roof