Converting Screen Porch To Sunroom: Process & Benefits

As summer approaches, there’s nothing quite like enjoying the great outdoors from the comfort of your own porch.

But what if your screened-in porch could be transformed into an all-season sunroom, allowing you to soak up the sun’s warmth year-round?

A screen porch is a wonderful space for enjoying the fresh air and outdoor views while being protected from the elements. However, it has limitations regarding temperature control and comfort during extreme weather conditions. On the other hand, a sunroom provides all the benefits of a screened porch but with added insulation and weatherproofing that make it a year-round living space.

In this blog post, I will guide you through the process of converting your screen porch to a sunroom, sharing tips and benefits along the way. From cost considerations to design ideas, I’ll cover everything you need to know to create your dream sunroom.

So, if you’re ready to take your outdoor living to the next level, keep reading to learn more about converting screen porch to sunroom.

Screen Porch Vs. Sunroom: What Are The Differences?

Whether you’re looking for year-round comfort or seasonal enjoyment, the temperature control factor weighs in heavily when comparing screen porches and sunrooms. Explore the complete comparison with me to make an informed decision for your home.

Comparison FactorScreen PorchSunroom
Temperature ControlLimited. Unheated during winter and can be too hot during summerAll-season comfort with insulated walls and often equipped with heating and cooling systems
Natural LightAbundant. Natural light can easily flow in from the open screensDepends on the number of windows, skylights, and other light sources installed
Protection from ElementsProvides limited protection against rain, wind, and bugsFully weatherproofed and provides protection against elements all year-round
Use as Living SpaceLimited to three seasons due to weather conditionsCan be used as a year-round living space
InsulationNot insulated, resulting in less energy efficiencyInsulated walls and roofing, offering increased energy efficiency
Pest ControlScreens can keep out some pests, but not allFully enclosed walls keep out all pests
MaintenanceScreens need to be cleaned and replaced more frequently, especially in areas with high wind or rainRequires less maintenance due to fully enclosed walls
Noise ReductionOffers little to no noise reductionCan offer moderate noise reduction
PrivacyOffers limited privacy from neighbors and passersbyProvides greater privacy due to enclosed walls
Home ValueIncreases home value, but not as much as a sunroomCan increase home value significantly due to increased living space
Natural VentilationScreens allow for natural ventilationWindows and doors provide natural ventilation with added control over temperature and airflow
Screen Porch

Temperature Control

Screen porches offer a comfortable place to relax and enjoy nature during mild weather conditions, but they are not designed to provide warmth during colder months or cool air during summer.

On the other hand, sunrooms offer a year-round living space with insulated walls and are often equipped with heating and cooling systems, allowing you to maintain a comfortable temperature regardless of the season.

Natural Light

Screen Porches offer abundant natural light, allowing you to bask in the sun’s warmth and enjoy nature’s beauty.

Sunrooms, on the other hand, depend on the number of windows, skylights, and other light sources installed, which can offer more natural light with added control over sunlight and heat.

Protection from Elements

Screen porches provide limited protection against elements such as rain, wind, and bugs. However, sunrooms are fully weatherproofed and provide protection against elements all year-round.

This feature is beneficial in regions with extreme weather conditions, as you can enjoy the comfort of your living space without worrying about outside elements.

Use as Living Space

Screen porches are designed to be used as a three-season living space due to their limited protection against elements.

Sunrooms, on the other hand, provide a year-round living space that may be utilized for a variety of activities, including a family room, dining room, or office.

A sunroom can be just as cozy as any other room in your house with the right insulation and heating/cooling equipment.


Screen porches are not insulated, resulting in less energy efficiency, and can be uncomfortable during extreme temperatures.

However, sunrooms have insulated walls and roofing, which offers increased energy efficiency, keeping your living space comfortable throughout the year.

Pest Control

Screen porches can keep out some pests, but not all.

However, sunrooms are fully enclosed with walls, making them the perfect living space for those who want to enjoy nature without worrying about pests.


Screen porches require more maintenance than sunrooms. Screens must be cleaned and replaced more frequently, especially in areas with high wind or rain.

Sunrooms, on the other hand, require less maintenance due to their fully enclosed walls.

Noise Reduction

Screen porches offer little to no noise reduction.

Conversely, Sunrooms can offer moderate noise reduction, making them a perfect space for relaxation and work.


Screen porches offer limited privacy from neighbors and passersby.

However, sunrooms provide greater privacy due to their enclosed walls, allowing you to enjoy your living space without worrying about unwanted attention.

Home Value

While screen porches can increase home value, they may add less value than a sunroom.

A sunroom can increase the home value significantly due to the added living space and year-round usability.

Natural Ventilation

Screen porches allow for natural ventilation, providing a refreshing breeze and a cool living space.

Sunrooms offer ventilation with added control over temperature and airflow, allowing you to maintain a comfortable living space regardless of outside weather conditions.

By considering these factors, you can decide whether a screen porch or sunroom is right for your home and lifestyle.

Glass elegant chandelier in creative conservatory or sunroom

How To Transform Your Screen Porch Into A Sunroom?

Your screen porch can be converted into a sunroom for year-round outdoor enjoyment. You can simply transform your existing porch into a lovely and useful living space with careful planning and implementation.

In this guide, I’ll walk you through every step of the process, from selecting the right windows to finishing the interior.

Step 1: Use Existing Screen Frames to Guide Window Selection

  • Before you begin measuring for new windows, make sure you have a measuring tape, a window catalog, and a calculator.
  • Use a measuring tape to measure the width and height of each screen frame that you plan to replace with a new window.
  • Measure from the inside edge of the frame to the inside edge of the opposite frame to get an accurate measurement.
  • Once you have your measurements, check the available window sizes from the manufacturer or supplier.
  • Look for windows that are the same size or slightly smaller than your screen frames to avoid modifying the openings.
  • Choose windows that fit the screen frames without needing to modify the openings.
  • If the available sizes don’t match your measurements, look for windows that can be customized to fit your specific measurements.
  • Once you have chosen the appropriate window size, calculate the number of windows needed to cover all the screen areas.
  • This will depend on the number of screen frames you have and whether you plan to install single or multiple windows in each frame.
  • Double-check your dimensions to guarantee correctness before making any orders.

Tools Required

  • Measuring tape
  • Window catalog
  • Calculator

Step 2: Add Framing for New Windows

  • Use a screwdriver or pry bar to remove the screws or nails that hold the screen frames in place.
  • Take off the screens and any other framing elements that do not hold up the roof structure, like spacers or extra framing.
  • Consider the size and placement of the existing structural elements like posts, beams, and rafters.
  • Decide on the best locations for the new windows based on the available space, ventilation needs, and aesthetic preferences.
  • Mark the positions of the windows on the porch framing using a pencil or chalk.
  • Measure the size of the window openings and calculate the dimensions of the new framing needed.
  • Use a circular saw to cut the pressure-treated lumber to the right size and angles.
  • Make sure to wear safety goggles and ear protection when using power tools.
  • Use a framing hammer and nails or a drill and screws to attach the new framing to the porch framing.
  • Start with the bottom plate and then add the header and studs.
  • Make sure that the framing is level, plumb, and square using a level and a framing square.
  • Use shims if necessary to adjust the framing for any uneven surfaces.
  • Use pressure-treated lumber for better durability against moisture and insect damage.
  • This makes it a more suitable option for outdoor structures like a sunroom that will be exposed to the elements.
  • Once the new framing is installed, measure again to make sure the window openings are the correct size and shape.
  • Check the angles and corners of the framing to ensure that they are square and level.
  • Make any necessary adjustments before proceeding to the next step.
  • Inspect the new framing carefully to make sure there are no gaps or holes in the structure.
  • Use a caulk gun and sealant to fill in any gaps or holes to prevent drafts, moisture, or insects from entering the structure.
  • Use a broom or a vacuum to clean up any debris, sawdust, or leftover materials from the framing and the work area.
  • This will help keep the work area safe and prevent any potential hazards during the next steps.
  • Before moving on to the next step, ensure the new framing is secure, level, plumb, square, and free of gaps or holes.
  • Check again to make sure that the measurements and angles are correct.
  • The new framing is now ready for the installation of the new windows.

Tools Required

  • Circular saw
  • Framing hammer
  • Measuring tape
  • Level
  • Nails or screws
  • Framing square
  • Caulk gun
  • Broom or vacuum

Step 3: Insulate the Walls and Roof

  • If your sunroom already has insulation, check if it is in good condition and if it meets the current energy code requirements.
  • If it doesn’t meet the requirements or is damaged, remove it before installing new insulation.
  • Wear a respirator mask and safety goggles to avoid inhaling insulation fibers.
  • A high R-value insulating material is recommended since it is more effective at preventing heat transmission.
  • Measure the walls and ceiling of the sunroom to determine how much insulation you will need.
  • Make sure to account for any gaps or areas that may need additional insulation.
  • Cut the insulation to fit the size of the space, and then use insulation supports to keep it in place.
  • Install insulation according to the local energy code requirements.
  • Be careful not to compress the insulation, as this will reduce its effectiveness.
  • Use insulation tape or spray foam to seal any gaps or cracks in the insulation.
  • This will prevent air leakage and improve the insulation’s effectiveness.
  • After installing the insulation, clean up any debris or insulation fibers left behind. Dispose of any waste material properly.

Tools Required

  • Insulation material
  • Putty knife
  • Safety goggles
  • Respirator mask
  • Insulation supports
  • Insulation tape
Screen Porch

Step 4: Install New Windows

  • Carefully place the windows into their respective openings.
  • Check that the windows are level and square using a spirit level and a framing square.
  • Use the provided hardware or screws and nails to secure the windows to the framing.
  • Follow the manufacturer’s instructions for proper installation.
  • Cut a piece of drip cap or sill flashing to fit the window’s width.
  • Install it over the top of the window to prevent water infiltration.
  • Make sure the drip cap or sill flashing overlaps the sides of the window by a few inches.
  • Apply a bead of caulk around the perimeter of the window frame where it meets the framing.
  • Use a caulking gun to apply an even, continuous bead of caulk.
  • Using your finger or a caulk smoothing tool, smooth the caulk.
  • Check that the windows open and close smoothly. Make sure they latch properly and lock securely.
  • Test the windows for air leaks by holding a lit candle or lighter near the edges of the window frame.
  • If the flame flickers, there may be a draft. Apply more caulk as needed to seal any gaps.
  • To close the space between the window frame and the siding or sheathing, install outside trim around the window’s perimeter.
  • Use a saw to cut the trim to fit. Secure the trim with nails or screws.
  • Remove any debris or excess caulking from the window installation. Dispose of all materials properly.

Tools Required

  • Window installation kit
  • Drill
  • Caulking gun
  • Sealant
  • Drip cap or sill flashing
  • Framing square
  • Spirit level
  • Saw
  • Nails or screws

Step 5: Flash the Windows

  • Measure the length and width of the window frame and cut the flashing material to fit around the frame.
  • Make sure the flashing extends beyond the edge of the frame by at least 1 inch.
  • Starting at the bottom of the window, press the flashing against the sheathing, overlapping it with the window sill.
  • Continue to wrap the flashing around the window’s sides, ensuring it overlaps the window frame by at least 2 inches.
  • Finish at the top of the window, ensuring the flashing overlaps the top of the frame.
  • Use scissors to trim any excess flashing material, leaving a 1-inch overhang beyond the edge of the window frame.
  • Apply flashing tape or sealant to seal the flashing to the window frame and the framing.
  • Make sure to seal any gaps or overlaps in the flashing.
  • Follow the manufacturer’s instructions for the proper installation of the flashing material and any associated products.
  • This will ensure that your sunroom is properly sealed and waterproofed.

Tools Required

  • Flashing
  • Flashing tape
  • Scissors
  • Sealant

Step 6: Expand the Electrical System

  • Determine where you need electrical outlets, switches, and lighting in your new sunroom.
  • Decide where you will place the new electrical panel or subpanel if required.
  • To guarantee that the work is completed safely and correctly, you must obtain permits and hire a licensed electrician because electrical work must adhere to local building codes.
  • Depending on your local building code, you may need to run a conduit or armored cable to protect the electrical wiring.
  • Consult your electrician to determine the best type of wiring to use for your sunroom.
  • Install new electrical boxes for outlets, switches, and lighting.
  • Make sure they are securely attached to the wall or ceiling.
  • Run new electrical wires from the existing electrical panel or subpanel to the new electrical boxes.
  • Follow local building codes and ensure that the wiring is protected by conduit or armored cable if required.
  • Connect the new electrical wires to the existing electrical panel or subpanel, following the manufacturer’s instructions or your electrician’s guidance.
  • Make sure all connections are secure and properly grounded.
  • Install new outlets, switches, and lighting fixtures in the sunroom, ensuring they are properly grounded and connected to the wiring.
  • Test the new electrical system to ensure that everything is working properly and there are no electrical faults.

Tools Required

  • Wire
  • Electrical boxes
  • Switches
  • Outlets
  • Wire cutters
  • Wire strippers
  • Conduit
  • Electrical tape

Step 7: Install HVAC System for Temperature Control

  • The first step is to select an HVAC system that is the right size for your sunroom.
  • This will depend on the size of your sunroom and your heating and cooling needs.
  • Consult with an HVAC contractor or a local home improvement store specialist to find the best system for your needs.
  • If you are not experienced in HVAC installation, it is best to hire a licensed contractor to install the system for you.
  • They will be able to assess your needs and install the system correctly and safely.
  • Be sure to check your local building codes and energy efficiency standards to ensure your system meets all requirements.
  • This is especially important if you are installing a new system, as it may need to meet higher efficiency standards than an existing system.
  • Once you have selected and installed your HVAC system, you will need to install ductwork and registers to connect it to the sunroom.
  • This will allow warm or cool air to flow into the space.
  • Follow the manufacturer’s instructions for installing the ductwork and registers, and make sure they are properly sealed to prevent air leaks.
  • Finally, install a thermostat to control the temperature in the sunroom and an air filter to help keep the air clean.
  • Follow the manufacturer’s instructions for installing these components, and ensure they are properly wired and installed.

Tools Required

  • HVAC system
  • Ductwork
  • Thermostat
  • Air filter
  • Screws or nails

Step 8: Extend Ventilation to the HVAC System

  • Plan where to install vents or registers to connect the HVAC system to the sunroom.
  • Place them in a location that allows for optimal airflow and distribution of heated or cooled air.
  • Determine the size of the ductwork needed based on the size of the sunroom and the HVAC system’s output.
  • Choosing the right size ducts is essential to avoid problems with airflow and efficiency.
  • Cut the ductwork to the correct length and width using a duct cutter or a saw.
  • Ensure that the ductwork is smooth and even to reduce resistance and promote proper airflow.
  • Install the ductwork and secure it with screws or nails.
  • To prevent air leaks, use duct tape to seal the joints between the ducts and the vents or registers.
  • Connect the ductwork to the HVAC system using the appropriate connectors or adapters.
  • Use screws or clamps to secure the connections tightly.
  • Install air filters in the HVAC system to trap dust and other airborne particles that can affect the air quality in the sunroom.
  • Follow the manufacturer’s instructions for properly installing and replacing the air filters.
  • Test the HVAC system to ensure that it’s working correctly and providing adequate heating or cooling to the sunroom.
  • Adjust the thermostat as needed to achieve the desired temperature.

Tools Required

  • Vents or registers
  • Ductwork
  • Screws or nails
  • Duct tape

Step 9: Install a Ceiling Fan

  • Choose the right size and style of ceiling fan for your sunroom.
  • You want a fan that complements the design of the space and has an appropriate blade span for the room size.
  • At the breaker panel, switch off the electricity to the electrical circuit for the sunroom.
  • Double-check that the power is off by using a voltage tester on the wiring.
  • Locate the ceiling joists in the sunroom and mark the location of the electrical box where the ceiling fan will be installed.
  • Make sure the electrical box is rated for ceiling fan installation.
  • Install the mounting bracket onto the electrical box using the provided screws.
  • Make sure that the bracket is level and firmly attached.
  • Hang the ceiling fan onto the mounting bracket and secure it with the provided screws.
  • Follow the manufacturer’s instructions for wiring the fan, which will involve connecting the wires from the fan to the wiring in the electrical box.
  • Install the fan blades onto the motor housing, following the manufacturer’s instructions.
  • Make sure the blades are securely attached and balanced.
  • Attach the light kit (if included) to the bottom of the fan motor housing and connect the wiring according to the manufacturer’s instructions.
  • Turn the power back on at the breaker box and test the ceiling fan to make sure it’s working properly.
  • Finally, use a ladder to adjust the fan’s direction and speed settings as desired.

Tools Required

  • Ceiling fan
  • Ladder
  • Screwdriver
  • wire stripper.

Step 9: Finish the Interior

  • Consider the style, functionality, and maintenance of the materials.
  • Some popular sunroom flooring options are tile, hardwood, laminate, and vinyl.
  • For wall coverings, consider options like paint, wallpaper, or wainscoting.
  • You could choose to paint the ceiling or install a decorative ceiling tile.
  • Take accurate measurements of the sunroom to determine how much material you’ll need.
  • Remove any old flooring, wall coverings, or ceiling materials if necessary.
  • Make sure the surface is clean and dry before you begin installing new materials.
  • Follow the manufacturer’s instructions to install the flooring.
  • Verify that the subfloor is level and pristine. If you’re installing hardwood or tile, you may need to use adhesive or mortar.
  • Use a saw to cut the flooring to the appropriate size and shape.
  • If you’re painting the walls, apply a primer first and allow it to dry before painting.
  • Use painter’s tape to create clean edges around trim and windows.
  • If you’re installing wallpaper or wainscoting, follow the manufacturer’s instructions.
  • Use a saw to cut the wallpaper or wainscoting to size.
  • If you’re painting the ceiling, apply a primer first and allow it to dry before painting. Use a saw to cut the ceiling tiles to size.
  • Once the installation is complete, clean up any debris and remove any tools or equipment from the sunroom.

Tools Required

  • Saw (circular or hand saw)
  • Hammer or nail gun
  • Nails or screws
  • Adhesive
  • Measuring tape
  • Level
  • Paintbrushes and rollers
  • Putty knife or trowel
  • Sandpaper

Depending on the complexity of the project and your skill level, you may need to hire a contractor to help with the whole transformation process. A professional can ensure that the materials are installed properly and according to code.


Why Should You Consider Transforming Your Porch Into A Sunroom?

A porch is a great space to enjoy the outdoors, but sometimes the weather or bugs can make it less comfortable.

One solution is to transform your porch into a sunroom. Here are some reasons why you should consider this:

  • More usable space: Converting your porch into a sunroom gives you more usable space in your home. You can use it as a living room, dining room, or even an extra bedroom.
  • Protection from the elements: A sunroom protects you from the weather, whether it’s rain, wind, or snow. You don’t have to worry about being chilly or wet to enjoy the outdoors all year long.
  • Protection from bugs: If you live in an area with mosquitoes or other bugs, a sunroom is an excellent way to enjoy the outdoors without being bitten.
  • Increased home value: Adding sunroom to your home can increase its value, making it a wise investment for homeowners.
  • Energy efficiency: A well-built sunroom with proper insulation and energy-efficient windows can help reduce your energy bills. You can enjoy natural light and warmth without relying on artificial light or heating.
  • Versatility: A sunroom can be used for many purposes. You can use it as a family room, exercise room, greenhouse, or even a spa. It is a versatile space that can be adapted to your needs.
  • Improved health: Your mood and health can both be enhanced by exposure to natural light. It can assist with sleep arousal control and lower your chances of developing seasonal affective disorder (SAD).
  • Increased connection to nature: A sunroom allows you to connect with nature, even if you live in an urban area. You can enjoy the beauty of nature and the changing seasons from the comfort of your home.
  • Aesthetics: A sunroom adds beauty and elegance to your home. It is a great way to showcase your personal style and taste. You can decorate it with plants, furniture, and artwork to create a cozy and inviting space.

Final Verdict

As you can see, converting your screen porch into a sunroom can be a fantastic investment in your home.

It not only increases your usable living area but also makes your property seem better and work better.

By following the process and using the right tools and materials, you can transform your porch into a stunning sunroom that you and your family will enjoy for years to come.

So, take the leap, and turn your screen porch into the sunroom of your dreams!


How much does it cost to convert a screen porch to a sunroom?

On average, converting a screen porch to a sunroom starts at around $25,000 for a basic sunroom that involves enclosing an existing porch with a screen enclosure. However, the conversion cost can vary depending on various factors, such as the size of the porch, the materials used, and the project’s complexity.

Which type of sunroom is best?

When it comes to choosing a sunroom for a year-round living space, a four-season room is the best option.

These rooms offer affordable heating and cooling solutions thanks to the thermal breaks installed throughout the building and the double-pane, high-performance Comfort-Gard® insulated glass.

A four-season room should therefore be your first choice if you want to increase the amount of living space in your house.

What is the life expectancy of a sunroom?

According to industry experts, the average life expectancy of a well-maintained sunroom in the USA is around 30-50 years.

Regular maintenance and repairs can extend the lifespan of a sunroom, but eventually, all sunrooms will require replacement or major renovation to ensure they continue to function properly and look their best.