Monday, July 15, 2024
HomeBuildHow To Attach Patio Cover To House

How To Attach Patio Cover To House

Two Videos Cover The Design Questions And Construction Process Of A Post And Beam Patio Roof Structure


Video 1: Design a Roof extension over an existing patio

Existing patio is outside the dining room on the west side of the house. the patio is essentially unusable on a sunny afternoon in the summer.

This video looks at a couple of design options, including attaching the roof ledger below that of the existing eaves and setting the patio roof atop the existing roof.

The latter option was chosen because the low roof and roof beam would have blocked the view from the dining area. Did we say that the house is in Bozeman, MT, where the view is worth viewing?

Work from the view back, not from the house, out.

  • Calculate the sightline clearance height, about 6 feet, 2 inches, in this case.
  • Determine the beam size: 8 inches in this case.
  • Choose a roof pitch and roof structure

This places the new roof on top of the existing roof. The next question is what to do with the existing eave under the new roof: kick it or keep it?

To tie the design together, Peter chose to cut the rafter tails off the extend the exterior wall up to the underside of the new roof. As it turned out, the existing roof structure is a truss system, but they were able to contact the original truss manufacturer to verify that cutting the tails off would not jeopardize the structural integrity of the trusses. 

From the we-hope-this-is-obvious desk: Never alter engineered trusses without the approval of a licensed professional engineer. Ever.

The next design decision: material selection

Video 2: Construction process



How Much Do I Have To Pay For A Professional Installation Of Ledger Boards

The cost for professional installation of ledger boards changes between cases but you have to pay around $1,000 for a simple project. If the project involves complicated procedures such as the removal of parts of the roof, the cost would go up to $5,000. Hence, assuming that you have what it takes to install the ledger board, do it by yourself instead of hiring the pros. Of course, if you lack confidence and don�t want to mess up the framing, contact a qualified contractor.

Zspmed Patio Cover Attached House Zspmed Patio Cover Attached House 14

How to build patio roof attached to house. The technique we’re going to share with you shows you how to use your home’s structure by supporting one end of the patio roof on a ledger that is mounted horizontally to the. When you are building a patio cover off of an existing roof or wall, you must take all of your measurements from the point at which the patio roof will attach to the existing structure, not the outside of the slab. Patio roof covers can be constructed of wood, plastic, vinyl, and fabric.

The very first thing you will need to know is that if you can build a roof directly on the slab. This method may be one of the most ubiquitous ways of attaching a patio roof. Install some riser brackets for more height.

There are a few things that you will need to consider before building a patio roof in your house. For you who build the patio close to your house, of course, choosing the one which is attached to its exterior wall is a wiser idea. Wood roof covers are the easiest to build as you can easily find the materials needed at any home improvement center.

Read How To Use A Dog Whistle

In general, retrofitting anything onto anything brings up problems. Most common ways to attach a patio roof to an existing house. See how we built our patio pergola to help define the perfect gathering space for our family.

Read How To Paint Digitally Clip StudioRead How To Hang Gutters On A Shed

Pergola Plans attached to House Beautiful Gable Roof Patio

Pin on Remodel Covered Porch

How To Attach A Ledger Board To A House For A Patio Cover: Breakdowns


  • 3.3 What is the lifespan of ledger boards? 
  • Different homeowners have different preferences but the consensus is that it’s nice to have outdoor spaces like patios around. Being able to relax on the patios after a long day would have positive effects on the body and mind of people. Still, due to exposure to elements, patios require patio covers to stay in top shape and the setup of patio covers usually involve ledger boards. Thus, those that care about their patios must learn how to attach a ledger board to a house for a patio cover.

    Ending Thoughts On How To Attach A Patio Roof To An Existing House

    How to Attach a Patio Roof to an Existing House

    Once you’ve learned how to attach a patio roof to an existing house, you can get creative. Leave the beams exposed if it fits your home’s aesthetics. Use decorative trim or flashing to make the roof look premium.

    Hide the nails and metal caps for a neat look. There are no limits once you get a grip on how to build the structure. Plus, once you’re done, you can enjoy the outside and recharge your batteries with a dose of nature, regardless of the weather conditions, from the comfort of your home patio.

    I hope you enjoyed reading this article about how to attach a patio roof to an existing house that we created with the help of Tidewater Roofing.

    If you liked this article, you can also check out these:

    • Contemporary Sofa Designs For Small and Large Spaces

    Pay Attention To Flashing And Roofing Details For A Watertight Job

    Building the tie-in framing on top of the existing shingles is a good way to keep the house waterproof as you construct the porch, but when it comes time to install the roofing you’ll have to cut the shingles along each of the valleys with a hook-blade utility knife. Then pry loose the cut shingles to make a wide path for the valley flashing.

    Cover the tie-in framing with 3/4-in. plywood. Add blocking as needed and fill in the triangular areas between the existing roof and the new roof.

    How To Attach A Patio Roof To An Existing House With Only 5 Steps

    Basically, when you want to have a patio, you have to build the base first which can be made of various materials like pavers, bricks, gravels, etc. Then, some pieces of furniture like chairs and tables are obligatory decor items that you have to add.

    Well, there are so many ways that you can do to enhance the beauty and comfort of your patio, and installing a roof is one of the good options that you can consider. Of course, the main goal of installing a roof is to enable you to use the patio when the weather seems too harsh. It can block the sunlight and protect the patio from the rain, so you can do some activities on the patio as you wish.

    Basically, you can choose between two types of patio roof which is the stand-alone design or attaching it to your house. For you who build the patio close to your house, of course, choosing the one which is attached to its exterior wall is a wiser idea.

    Below, we share a complete tutorial on how to attach a patio roof to an existing house that you can easily follow.

    How To Build A Covered Patio Attached To A House 21 Photo Gallery

    21 Photos

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    Build The Deck Square And Level And Assemble The Perimeter Joists

    Install the ledger board.

    Start by marking the ledger board location on the house wall. We located the top of the ledger board 90 in. below the bottom of the soffit. On our house, this left a 6-in. step down from the patio door to the deck surface. Remove the siding and attach the ledger with 1/2 x 4-in. galvanized lag screws . Make sure it’s perfectly level. If the ledger attaches to concrete, predrill holes and insert lead shield lag screw anchors before installing the lags.

    Outline deck frame and set beams. 

    After you mount the ledger, use stakes and string lines to outline the deck frame according to the dimensions in Figure B and mark the footing locations. A few days before you plan to dig the footings, call 411 to have underground utilities marked in the vicinity of the porch. Your local building department will specify how large and deep the footings should be for your climate and soil conditions. Pour a concrete pad in the bottom of each footing hole after they’ve been inspected. Let the concrete set overnight.

    Assemble Frame.

    Next, choose the six straightest 2x10s for the perimeter beams. Cut the 2x10s for the two side beams to length and nail the pairs together. Use 16d stainless steel or double-dipped galvanized nails for all of the joist framings and to attach the joist hangers to the ledger board. Rest one end of each side beam in the double joist hangers and prop them up until level with a stack of wood.

    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
    • 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.

    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.

    What Youll Need To Attach A Patio Roof To An Existing House:

    • Wooden Beams
    • Ledger
    • Utility Knife
  • Beginning from the roof to the house , calculate the sightline clearance height.
  • After that, determine the beam size you’ll want to use.
  • Then, choose a roof pitch and roof structure.
  • Because you’re installing your roof on top of your existing roof, you’ll want to consider whether to remove the existing eave or keep it.
  • Next, determine how many beams, rafters, and roofing planks you’ll need for your design.
  • Stain your wood pieces to protect them from outdoor elements.
  • Then, fasten the post bases to the ground using lag bolts and a screwdriver and make sure they sit plumb.
  • Cut one side of the horizontal roof beam on an angle so that the rafters sit flush on it.
  • Using your nail gun, attach the horizontal beam and cut the two outer rafters to sit flush on top of the existing house roof.
  • Install the two outer rafters and attach a plain rafter beam to the very edge of the existing roof.
  • As you continue to install your rafters, cut the house end of each one so that it fits over top of the plain rafter beam.
  • Once all of the rafters are in place, attach your planks horizontally across the rafters to form your patio roof.
  • If you’re covering the patio roof with shingles that match your existing roof, install black roofing felt and a layer of oriented strand board.
  • After that, you can attach your roofing shingles.
  • *Photo courtesy of

    Cut Away The Overhang And Siding To Make Way For The Porch

    How To Build A Patio Cover Attached To The House

    You’ll have to decide whether to cut a slot where the porch walls meet the siding. If your siding is stucco, brick or stone, you may want to butt the walls to the siding.

    Make a mark 1-5/8 in. out from the deck on both sides. Then make another mark 5-1/8 in. inside the first mark. Draw plumb lines up from these marks and cut a 5-1/8-in. slot through the siding but not the sheathing. Set the saw blade just deep enough to cut through the siding only. Remove the siding. Waterproof the slot with No. 15 building paper.

    How To Attach A Ledger Board To A House For A Patio Cover

    Patio spaces are great for relaxing and spending time outdoors. However, the same cannot be said if your patio lacks a cover, as you’ll not be protected from the elements. A great way to improve your patio is by attaching a ledger board for a patio cover. Not only does it offer shelter from sunlight and rain, but it also adds aesthetic appeal and value to your home. It’s not a complicated process either to attach a ledger board to your house. 

    You will need to know what is required when attaching the ledger board to your house and how the entire process works, which you will learn if you read on. 

    Method 1 Of 2:installing Different Types Of Patio Covers

  • 1Purchase a patio umbrella for a cheap premade option that is easy to set up. This is the most basic and economic option to cover your patio. Get a patio umbrella that fits on your patio and is mobile so you can adjust it to block the sun as it moves, or shelter against light rain.XResearch source
  • An advantage of patio umbrellas is that you can include them as part of an outdoor furniture set to complete your patio decor.
  • 2Use some poles and a tarp or canvas to create an affordable outdoor canopy. Cover your patio with a tarp attached to 4 poles if it is located away from your home. Use only 2 poles and a tarp attached to the wall of your home .XResearch source
  • Get a tarp or canvas that already has grommets in the corners to easily tie it to the poles. Use a sturdy cord to tie everything together.
  • You can use ropes and stakes, or buckets weighed down with sand or water, to secure the canopy in place. Stakes anchor the ropes that support the canopy’s poles in place, or buckets act as weights to hold the rope and poles in place.
  • 3Buy a sail shade and tie it above your patio with the provided accessories. Look for secure points you can tie the sail shade to such as posts, trees, or secure parts of your home. Install wooden or steel posts at the corners of your patio if there are not enough existing points to tie the sail shade to.XResearch source
  • If you do attach the sail shade to trees, this should be for temporary use only so you don’t damage the trees.
  • Options For Attaching An Aluminum Patio Cover To My Home

    • January 4, 2019


    Mounting to the house wall

    First of all, let’s discuss the money savings when attaching a patio cover to your house wall, which can be considerable. If you are budget-minded and wanting to minimize costs, you should always attach your patio cover to your house wall. Keeping in mind the height of the cover should be a minimum of eight feet.

    Freestanding covers can be up to 2 to 3 times more expensive than attached patio covers, so try to be mindful. Remember, the cost saving of bolting and installing your posts directly to your existing concrete can save you hundreds of dollars and from costly, unnecessary work. One of the many benefits when designing your new Alumawood Tm. Aluminum patio cover structure. Footings can be expensive. The further you build your cover in projection, the closer your post becomes to one another. We have a solid top patio cover on our promotion page that offers just that. Our Promotion page 

    Mounting to your fascia board

    Secondly, when attaching to your fascia board, you must consider height limitations, the fascia board’s size, and rainwater runoff onto your cover. You do not want other roofs draining onto your patio cover. Open top lattice structures do not need to be sloped.

    Mounting to your rooftop

    Step 5 Ditch The Splash While Maintaining The Air Flow

    The main goal of installing a patio roof is because you want to enjoy hanging out in your patio despite the weather. However, in some cases, you will not only block the splash but also the airflow.

    To prevent it from happening, you need to place the patio sheeting about 300 millimeters over the top of the roof. This technique allows the patio roof to perform a shield from the rain without blocking the airflow.

    Tips For Joining The Screened In Porch And House Roofs

    If you’re not sure how to neatly join the screened in porch and house roofs:

    • We recommend hiring an architect to help work out the details.
    • Another option is to build a full-size mockup of a roof truss out of inexpensive and lightweight 1x4s. Figure out where the top of the wall plate would be if you built the porch according to our plans . Then support the mocked-up truss at this height to see how the porch overhang meets the roof.
    • If you don’t like the way the overhangs intersect, adjust the level of the deck slightly, alter the wall height or change the width of the overhang.
    • Contact your local building inspections department to find out what’s required to obtain a building permit.
    • Start this process at least a month before you plan to build. This will allow enough time to work through potential problems.

    Finding The Right Tools For Installing A Patio Roof

    Image source: Michelle Walker architects

    Attaching a patio roof to an existing house is no easy job. It is doable, but it takes a lot of motivation and attention. Besides strong morale, you’ll also need the appropriate tools to get this project completed. Patio roofs can be dangerous if they are not installed properly, especially if the area in which you live in is known for harsh weather conditions that often cause roof damage. In order to avoid any risk and to keep yourself and the ones around you safe, make sure you use tools correctly. You’ll need:

    • Carpenter’s pencil to mark spots
    • Level
    • Ledger

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    24 Photos

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    Shipping container houses can be totally kitted out with beautiful interiors that includes trendy designs leading to a actually stunning finish. However with rising prices of house ownership it can be out of attain for a lot of. Whether you want to buy your first dwelling or one for retirement, select something reasonably priced, like manufactured housing, the next time you search for a spot to reside in. Nowadays, manufactured housing is much totally different than the one most individuals know of. Though you could have come throughout the words “manufactured housing”, you might not be too positive of what it means. A few of these properties can also be found in manufactured housing communities. At current time, you’ll discover that the finishes outdoors are additionally similar to conventional houses.

    How Do You Attach A Patio Roof To An Existing Roof


    Most Common Ways to Attach A Patio Roof to An Existing House

  • Fix The Back Channel to The Fascia Boards Underneath The Gutter Directly.
  • Make The Patio Roof A Little Bit Higher.
  • Install Some Riser Brackets for More Height.
  • Prevent The Splash Of The Rain, Let The Air Flow.
  • The Simplest Way To Get The Cleanest Look.
  • Step 3 Go To The Same Height As The Existing Roof

    If you want to have a clean look and make the patio cover flush with the existing roof, you need to strengthen the fascia and back channel by reinforcing the rafters inside the existing roof.

    Then, fix the back channel to the fascia boards underneath the gutter directly. This might be one of the common ways of attaching a patio cover to an existing home.

    It is simple and easy to do. However, by using this method, your patio cover cannot go high or low.

    How Do You Build A Pergola On The Side Of A House

  • Mark the Pergola Elevation and Width on the House. …
  • Cut and Notch Three Beams for the First Roof Layer. …
  • Level, Pre-drill and Attach the Pergola Ledger to the House. …
  • Drill Patio for Post Brackets and Attach with Expansion Anchors. …
  • Install Post Supports and Posts to Brackets with Heavy-gauge Nails.
  • Attached Patio Roof Vs Free Standing Patio Cover

    A freestanding patio cover is still a big project, but it’s usually easier to build than a patio roof that attaches to your house. In general, retrofitting anything onto anything brings up problems. Whenever possible, it’s pretty much always better to put new things onto other new things.

    And so, if any significant portion of your patio’s square footage is at least a few yards away from your house, a freestanding patio cover will probably be your best bet, at least when it comes to construction. Maybe when it comes to using it, too–there’s a certain feeling of luxury that comes up when you walk from the domain of inside your home to the outdoors and then into another protected, not to mention beautiful, area which is still outdoors.

    In fact, a freestanding patio cover affords virtually unlimited style options. By contrast, a patio roof attached to your house depends largely on what’s going on with your siding and existing roof. This is true both in terms of technicals and style. Whereas any freestanding patio cover can look natural away from the house, one that grows directly out of the side of the house but deviates from the house’s color scheme, shingle and siding style can look strange and awkward.

    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.

    How To Attach A Patio Roof To An Existing House


    Patios are an absolute must if you like spending time in the sunlight and just relaxing in your own comfortable space. Even so, the weather won’t always be on your side and there’s an upgrade that can give you the chance to spend time outside regardless of the conditions – a patio roof. If you’re here to learn how to attach a patio roof to an existing house, it’s probably the most straightforward guide you will get to read. Patio roofs don’t require expert planning and proficient skills. Following each step mentioned here should be enough to put together a patio roof on your own.

    Vertical End Beam And Rafters Checked For Level

    Attach the Rafters

    Attach 2×6 rafters to the house with joist hangers and/or supported by the ledger board. If necessary, use a sliding bevel to determine angles needed where the rafters will meet the ledger board. Rafters are placed on 24″ centers, and attached to the beams and settle joists are attached as needed . The rafters should be added from each end working toward the center. Check each rafter for level as they are installed. Attach to ledger first, then settle joists. The vertical end beam is checked for level as the end rafters are positioned and secured. If the rafters extend over a beam, do not extend more than 1/3 of overall rafter length.

    Retractable Canopies Offer Maximum Versatility

    Retractable canopies are large shading structures built over the deck and mounted to the house and decking. The best time to choose these systems is when you’re planning a new deck, so you can incorporate the support posts into the design.

    • They provide one of the most customizable patio shade ideas.
    • The shading fabric slides open and closed along overhead tracks.
    • You can retract each canopy independently of the others.

    Pros: With structures up to 21 feet long and nearly 27 feet wide, the wooden canopy systems will cover almost any size deck. Each canopy is retractable, and it’s the only system that allows the canopies to be partially retracted, giving you more control over your shade. More than 40 fabric colors are available to match your home’s decor. Block sun along the sides by fastening vertical blinds to the overhead structure.

    Cons: You can install the canopies on existing decks, but the support posts may not look consistent with your current decking materials and could become obstructions. The overhead structure and posts stay in place even when the canopy is retracted.

    Frame The Walls Accurately For Smooth Assembly

    Covered Patio Roof Designs » Looking for Patio Pergola ...

    Since the wall framing for this screened in porch is the finished surface, it’s worth taking a little extra time to make the framing material look good. We chose the nicest cedar 2x6s we could find and ripped them into 3-1/2-in. and 1-1/2-in. boards. We did this to create sharp, clean edges .

    Cut the studs and crosspieces to length and screw the walls together . We used a power miter saw for clean, square cuts, but a circular saw will work too. Use a crosspiece as a spacer when you’re attaching the studs to the top and bottom plates. Then cut a 10-in. spacer block to position the crosspieces for assembly.

    Placement Of Header Determines Level Of Roof

    Start With Ledger Board

    A ledger/header board is the first step if you are attaching the patio roof to an existing structure. The placement of the ledger/header determines the level of the roof, so be sure it is positioned at the correct height and is horizontal. When fastening ledger/header boards to wood, the ledger should be held securely with bolts through the wall or lag screws.

    Construct A Jig To Assemble The Roof Trusses

    Prime Before Painting. 

    Prime and paint the truss parts, wall frame and screen stops before assembly. Prime the wood with a special stain-blocking primer such as Zinsser’s oil-based Cover-Stain. Then brush on a coat of acrylic exterior house paint. Make sure to prime every cut end as you work; otherwise, these areas will absorb moisture and cause staining. We prefinished the roof boards with an oil finish .

    How to construct the roof truss jig: 

    It’s easiest to assemble the roof trusses first, using the deck platform as a work surface. Screw two sheets of plywood to the decking and use the dimensions in Figure J to chalk lines indicating the top of the rafters and the bottom of the 2×6 crosstie. Cut triangular blocks and screw them to the plywood to hold the rafters in alignment as you assemble the trusses.


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