Roof Extension

[BLOG] Published: 2022-03-12 - Updated: 2023-05-31

Roof Designs For Extensions


Roof Extension Roof Extension Cost Roof Extension Materials & Design Roof Extension Contractor Roof Designs For Extensions

Roof Extension: From A TO Z

A roof extension is a great method to create a new space in your home. It gives you several options depending on your specific needs. It also allows you to add height and character to your home.

Take a look at different roof extension ideas below if you're seeking roof extension done professionally. If you already know what you want, contact Smart Remodeling LLC for a roof extension consultant in Houston, Texas.

A beautiful and substantial mansion

Roof Designs For Extensions

Many flat roof designs may be found in books, magazines, and online to help you with your extension project. A flat roof, when done correctly, looks modern as well as being dependable. 

Here are a few of the most popular roof extension trends:

Shed Roof 

The simplest approach is a single slope that connects to the old house at its highest point and slants down to the addition's exterior wall. It's simple for the contractor to construct and affordable for the homeowner. The downside is that it makes the extra room appear to be an obvious addition. 

This can lower the value of your home renovation, especially if it's visible from the street. Shed roofs over living rooms are now prohibited in an increasing number of affluent towns.

Gable Roof

A gable roof expansion consists of both a new roof and a first-floor addition. The pitch is steeper here, and the hips are converted to gable ends, resulting in a large amount of additional floor space upstairs. Your gable roof will add visual appeal and character to the home. This is if it is matched to the angle and proportions of other rooflines on the house, making the addition look like an asset that fits with the house.


Flat Roof Extension

Flat roofs don't have to be perfectly horizontal; they can be at any angle. They're simple to install and offer extra features like the possibility to add solar panels or air conditioning to your roof. Some homeowners even go so far as to build an extra living space up there.

Pitched Roof Extension

A pitched roof gives you more height without making your home look boxy or oppressive. It can be made to complement your home's current appeal while also altering it from its prior appearance. These angled ceilings can also make room for new, beautiful windows and more glazing.

First Floor Extension

Many modern homes have hipped roofs with a short pitch, leaving little space for a loft or storage. Depending on your goals and needs, Smart Remodeling LLC can help you do two things here. We can either create a loft extension within the existing roof space or entirely remove the old roof and replace it with a new first story.


A dormer is a small gable roof that protrudes from the main roof at a 90-degree angle, usually to house one or more windows. A dormer effectively raises the ceiling where you would otherwise have low eaves. 

This is handy if you're increasing the top level of your home. And one or more dormers can be used to dress up and connect the roofs of a house and its addition together. (Designing a Roof Addition, 2020)


Glazed Roof Extensions 

Glazed roofs are made up of a large expanse of glass. They are a wonderful way to flood your expansion with natural light and create a sunroom-style environment. These areas can be used as a second kitchen, studio, or home office.

Garden Roof Extension

The green roof, which allows homeowners to create a garden on their roof, is perhaps the most modern of all roof designs. Green roofs are becoming a more popular choice among homeowners who want to stand out. This is because they are both ecologically responsible and aesthetically beautiful.

First Floor Over Ground Floor Roof Extension

By extending your home's first floor over the ground floor, you can add more living space upstairs. This can be accomplished by extending the first floor beyond the existing external wall. The result will be a covered patio and entrance porch that greatly expands the floor area of the room above. (Refresh Renovations, 2021)

Things To Consider Before A Roof Extension

Depending on your home renovation needs, a roof extension onto your home can provide you with more space. Room additions such as a dining room or a home office are possible to achieve. You can also create big additional rooms or enhance existing floor living space, such as enlarging a kitchen.

Here are some pointers to help you decide which solutions are best for your expansion project.


The price of your chosen roof extension ideas and materials will undoubtedly consume a significant chunk of your money. You must be open and honest about the amount of money you have set aside for this extension project. It's an important discussion to have before you start working on your extension.

ProTip Takeaway: Architectural fees, builder's fees, materials, and building control fees are all included in your budget. They will vary depending on the quality and complexity of the work.


Is the roof you're installing practical? Consider things like durability, resistance, and suitability. You'll want something that will last a long time, is durable, weatherproof, and light in weight.


When you spend thousands of dollars on anything, you clearly want it to look great as well as function. However, as with most things, the most expensive options, such as slate or clay tiles, often appear to be the best. For many people, though, a roof is a roof, and unless you can see it all the time, it shouldn't matter too much because you'll be below it rather than peering up at it.

Quality Roof Extension

Understand why you want to extend your home and how it will benefit you, your family, and your property. Because of the rising costs and hassles of moving, as well as the uncertainties in the housing market, more people are opting to stay put.

If the goal of the project is to increase the property value, it's a good idea to consult an estate agent to determine the value potential of your home. Inevitably, there will be a glass ceiling in the region, and your hard work and money may not yield the results you desire.

ProTip Takeaway: Many homes have hidden potentials, and home renovation can improve a home's comfort while also increasing its market value.

Materials & Design

Now is the time to start thinking about some ideas for your roof extension design. Begin to consider the materials and effects you'd like to use in your creations. Consider your windows, doors, radiators, insulation, and, above all, your roof.

Flat roofs are so sturdy and they're great for your extension. They are also advantageous as they don't have any seams, joints, or welds that allow water to sneak in and damage or degrade components.

A durable topcoat is rolled over the top of the strong fiberglass layer to create a fully sealed surface. Water cannot infiltrate the roof if it is installed correctly since there are no weak places or probable failure points. (Canova Roof, 2021) 


Roof Extension Cost

This sort of home renovation requires a budget for the job. The cost will vary depending on the roof extension design. You will find that a flat roof costs less than a pitched roof which is good news in this case.

This is due to the fact that a flat roof requires less structural engineering. It also allows for the use of less expensive materials than a pitched roof.

What pricing to expect depends on a number of factors, including:

  • Location - The costs of living in a big metropolis will be higher than in a small town.
  • Accessibility - How high is the roof extension and how easy is it to get there?
  • Materials - The better the quality of the materials, the higher the price.
  • Size - A small roof will be less expensive than a huge one.

For a single-story expansion, you may expect to pay between $1,500 and $2,000 USD per m2, based on the four factors indicated above.

Meanwhile, a double-story extension is expected to cost nearly twice as much as a single-story extension. If your design idea is complex, you can add another 10% to 15% to your cost. Architect, structural engineer, and other professional costs are required for high-quality construction. (My Roof, 2020)

ProTip Takeaway: If you don't have a choice, you may have to erect a more expensive pitched roof. Whether it is the less expensive flat roof expansion or not, the design ideas that deliver the best long-term solution are perfect.

Focus on the roofline if you want your addition to appear as an original component of the house rather than an afterthought. Unless you get the right contractor to build the roof right, your addition will look like a tacked-on addition to the side of the house. This will be the case no matter how nicely the rest of the design fits and the materials complement the house.

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Ready To Extend Your Roof

Are you looking for a professional roof extension expert in Houston, Texas? Smart Remodeling is the best company for the job. We have years of experience in home renovation and roofs extension.

 Our roofs are built to the highest quality standards and provide homeowners with peace of mind that no other product can equal. They're the ideal complement to any home improvement. To learn more about our services, please visit our website or call us on 832 800 8889.


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