How to Attach a Patio Roof to an Existing House and 10 Fantastic Patio Roof Ideas

how to attach a patio roof to an existing house

How to Attach a Patio Roof to an Existing House – Spending time by relaxing on a patio is a great idea. However, the glare of the sunlight or the pouring rain will ruin it. Therefore, you need to install a patio roof.

It does not only protect you from the heat and rain, but it also accentuates your house. Read on to find out how to attach a patio roof to an existing house.

Most Common Ways to Attach a Patio Roof to an Existing House

Attaching a patio roof entails intermediate carpentry skills and creativity because there are many ways that you can choose from.

All of them have their own advantages and drawbacks. When installed correctly, the patio roof will complement the house and provide an extra entertainment for you and your family for all year round.

Here are 7 different ways of attaching a patio roof to an existing house that you can apply.

1. Fix The Back Channel to The Fascia Boards Underneath The Gutter Directly

This method may be one of the most ubiquitous ways of attaching a patio roof. To do this method, you will have the back channel and fascia strengthened by reinforcing two rafters inside the roof.

It is quite easy and simple to do, but this method does not allow you to go high or low.

2. Make The Patio Roof a Little Bit Higher

It is almost similar to the first method, but to make the patio roof a little bit higher, you will need to remove the house gutter and place the back channel a bit higher.

Because the gutter is removed, you will need to install transfer flashing from the roof of the house to the patio. It allows you to add over a hundred millimeters of extra height.

3. Install Some Riser Brackets for More Height

If you wish to reach a specific height, you can lift the roof of the patio with some riser brackets. The patio roof which is raised with some brackets requires a custom barge cap.

It will not only allow you to raise the ceiling up to 2 feet, but also give various splendid options for the finishing look and relaxed ambiance.

You can go with opaque twin wall sheeting if you want to get some natural light for your patio.

Opaque twin wall sheeting that is installed between the roof of the patio and the barge cap allows natural light to pass through.

If you are not really into natural light and want to block it, you can infill the gap between the patio roof and barge cap, and seal the rear opening.

To get a cleaner and nicer look, you can add some extra flashing wall covering. After that, you can seal the brackets from the front.

4. Prevent The Splash of The Rain, Let The Air Flow

The ultimate goal of installing a patio roof is to protect you from the rain and the glare of the sunlight. Unfortunately, it requires you to block the air flow sometimes.

To prevent the splash of the rain, but let the air flow, you need to place the patio sheeting over the top of the roof about 300 millimeters so that it can perform shield from the rain without blocking the airflow.

It is your best bet especially if you have a fully-covered patio which do not have much airflow.

5. The Simplest Way to Get The Cleanest Look

To get the cleanest look without breaking a sweat, you can simply attach the back channel and the patio directly to the wall of the house.

It does not only give you a clean look, but also a better protection from the rain.

6. Raise The Roof by 500 Millimeters

You can raise the patio roof up to 500 millimeters by removing the eaves, fascia, and gutter. After that, cut the rafters back to the wall line.

The back channel is connected to the rafter directly and reinforced. By doing this method, you will have a clean finish that is connected to the wall line.

But, you may also need to install transfer flashings on top to complete the look.

7. Neat and Tidy Look

To create a neat and tidy look, extra height is required, eaves, fascia, and gutter are removed, and rafters are cut back.

Install FHS columns on top of the wall. After that, place and reinforce the patio to the rafters. The beam has to be placed on top of the desired height.

You are going to need to install a custom box gutter on the house and custom barge on top.

It will help you make sure that everything is watertight. You may also need some sort of cutting underneath to complete the job.

Some Steps on How to Attach a Patio Roof to an Existing House

Attaching a patio roof to an existing house is not a doddle, but it does not mean that you cannot do it. You just need some assistances of experts if you are not really good at carpentry.

Before attaching a patio roof to your home, you need to prepare some materials such as:

  • Nail gun
  • Nails
  • Wooden beams
  • Wooden planks
  • Wooden rafter
  • Roofing shingles
  • Black roofing felt
  • Screwdriver
  • Lag bolts
  • Oriented strand board
  • Utility knife
  • Ledger


  • Measure the sightline clearance height from the roof to the house, not the other way around.
  • Measure the size of the beam that you are going to use.
  • You can either remove the eave or just keep it.
  • Using lag bolts and a screwdriver, fasten the base of the posts to the ground. You have to make sure that they sit plumb.
  • Make a cutting on one of the sides of the horizontal roof beam on an angle. You have to do it thoroughly so that the rafters sit flush on it.
  • Attach the horizontal beam by using a nail gun. After that, to make it flush with the roof of the existing house, cut the two outer rafters.
  • Now you can begin assembling the outer rafters and attaching the rafter beam to the edge of the roof of the house.
  • Cut each of the house ends while continuing installing the rafters so that they fit the top of the rafter beam perfectly.
  • When all the rafters are installed correctly, form your patio roof by attaching the planks horizontally across the rafters.
  • If you are going to use shingles to cover the patio roof, do not forget to install black roofing felt along with a single layer of oriented strand board. When they are installed, you can begin attaching roofing shingles.

Once the patio roof is installed perfectly, you will be able to furnish it so that you can get your ultimate comfort. You will be ready for the rain and the glare of the sun.

But, you do not think that installing a patio roof is all about covering the patio from the splash of rain and the heat of the sun, do you?

A patio roof can do more than being a shield. It can add charm to your patio. Here are 10 patio roof ideas that you can apply to your house.

1. Japanese Style Patio Roof

Japanese Style Patio Roof
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This patio roof conjures up images of Japanese houses. The wooden posts support the exposed beams that overhang a little bit.

The latticework allows natural light to pass through so that you will be covered partially. The lanterns hanging over the green couches accentuate the Japanese style of this patio.

And to make it look like a Japanese traditional house, some bamboos are grown next to and in front of the patio.


  • The latticework does not completely block the natural light so that it can still pass through the patio roof.


  • The roof cannot protect you from the rain.

2. Modern Patio Roof

Modern Patio Roof
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This patio roof gives a modern touch to your house. The minimalist concept, just like any other modern houses, is what it is all about.

This roof looks like floating since it is only supported by a post and the wall of the house.

The tongue-and-groove ceiling complements the wooden fence very well. And so do the post and the frame of the ceiling.

They complement the wall and the furniture, making this patio look simple yet elegant.

3. Patio Roof with Sleek Design

Patio Roof with Sleek Design
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Sleek design has always provided clean and modern look to any buildings including a patio. Therefore, if you want your patio look modern, you need to install a sleek patio roof.

This patio roof is installed for the aesthetic purpose. It does not cover the patio completely which allows rain drops on this dining table. However, it does complement the house very well.

In the evening, the patio roof becomes the perfect place to relax on the day. If you want your patio roof to become more stylish and unique, you can decorate it with custom neon signs. Whether you choose to display a favorite quote, an inspirational word or a symbol that resonates with you, a neon sign can reflect your thoughts and personality.

Glittering neon lights not only illuminate your patio, but more importantly, they create a cheerful, welcoming atmosphere for your patio space!

4. Outdoor Pergola Style

Outdoor Pergola Style
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The rustic look of the distressed wooden posts and beams does not hinder it from looking stylish.

It even adds charm to the patio and complement the exposed brick wall. The exposed beams overhang a little bit and show the carved edges off.

The uneven edges give the touch of classic look to the patio.


  • To make the patio roof look more beautiful, you can add roses or any other vines on it.

5. Metal Patio Roof

Metal Patio Roof
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Metal is one of the most favorite roofing because it has many advantages. One of them is its durability.

Metal is well-known for its durability and resistance to high winds and snows. It also gives you the best protection from rains and snows.

Metal roofing is not as heavy as its counterparts. Since it is quite light, it will be easy for you to install it.

Although the initial cost could burn a hole in your pocket, it is still worth-installing since its durability will not make you to replace it soon, meaning you have the chance to salt away some money.

Also read:

6. Full Protection from The Sun, Snow, and Rain

Full Protection from The Sun, Snow, and Rain
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If you are looking for something that can give you the ultimate protection from the heat of the sun, rain, and snow, you need to take metal roofing to your consideration.

This metal roofing suits the style of the house very much. Besides accentuating the house, it gives you the protection that you need as it is attached directly to the wall.

7. Canvas Shade Sail for Patio Roof

Canvas Shade Sail for Patio Roof
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Simple yet elegant. This canvas shade makes a pretty good roof for the patio. It does not only accentuate the patio which gives it a more exquisite look, but also protect you when you feel like to enjoy the view of your backyard.

This patio roof features curtain tracks that are attached on each of the beams. They allow you to adjust the canvas shade as you please.

You can draw the canvas back to get natural light or close it so that the patio will be completely covered.

8. Stylish Beige Patio Roof

Stylish Beige Patio Roof
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This patio roof complements the exterior very well. The soft beige color provides a relaxed ambiance to the patio so that it can be a great place to call it a day.

The pergola style allows natural light pass through which makes the patio shaded partially. You will not miss the warm of the sun when sitting in the patio.

9. Translucent Fiberglass Patio Roof

Translucent Fiberglass Patio Roof
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Fiberglass is very versatile. Therefore, you can use it as the roof of your patio.

Fiberglass is pretty light and flexible. Its flexibility and weight make it quite favorable when it comes to patio roof.

Besides, fiberglass is quite cheap, but it can make your patio look more beautiful just like the one in this picture.

10. Tempered Glass Patio Roof

Tempered Glass Patio Roof
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If you are looking for patio roof that allows you to get natural light as well as protecting you from the rain and snow, tempered glass will be your greatest bet.

The transparency of the tempered glass allows you to stay in the patio while enjoying the view of the surrounding including what is over the roof. It is a bit pricey, though.

Also read: Floor to Ceiling Windows Cost and Ideas


Now you know how to attach a patio roof to an existing house and some patio roof ideas. Attaching a patio roof is not that hard, isn’t it?

But, you had better not install it by yourself. Having some assistance will be a terrific idea.

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