Find Out The Vertical Distance This Is Critical
Measure the vertical distance between the roof and the ceiling if there is one. There are just a few situations that you will encounter on this step and you can determine whether to use a bottom side outlet roof drain:
How To Build A Shed Roof Over A Deck
Always try to match the house roof pitch angle and overhang for your shed roof. Some shed roofs are designed to be nearly flat. Flat roofs are more susceptible to leaking than pitched roofs. Shed roofs project as a single plane roof pitched away from the house. If you are tying the roof directly to a house wall, you can install a ledger board with flashing and install rafter ties to attach the rafters at the appropriate angles or use engineered trusses. The opposite side of the porch roof will be supported by a header beam that is installed parallel to the house on top of 6×6 support posts. Support posts should be spaced less than 8′ apart and be located on top of properly sized frost footings. Rafters should be attached to the header beam using hurricane ties. If you are tying the shed roof into an existing roof on the house, you will need to remove the shingles and sheathing to expose the roof framing. You will need to attach the porch rafters to the house roof rafters and replace the roofing and flashing. Many building departments require a local architect or engineer to design plans for porch roofs because of the increased snow, roof and wind loads created by adding a roof.
When Should Roof Decking Be Replaced
When you get a roof replacement, you might have to replace your decking. If any of your roof deckings integrity is compromised or there are signs of rotting, the wood will need to be replaced.
Usually, there are going to be a few boards that have to be changed out. But your roofing contractor wont know how much of your roof decking needs to be replaced until after they finish tearing off your old roof.
If they find rotten boards, your roofing contractor has to replace the decking before they can begin installing your roofing components. However, if your contractor finds your deckings integrity to be sound, then it can handle your new asphalt roof.
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Completing The Gazebo Roof Deck
Can I Build A Deck On My Rooftop
Can your roof structure support the additional weight? A building code official may be able to help you here. Or not. At a minimum, they will likely know what the loading requirements are in your area. You may also need a master builder or structural engineer to determine the loading capacity of your roof. They can determine whether your existing roof can support the extra weight of a deck. Never build a rooftop deck without checking this first.
There is plenty more design inspiration and information where this came from. Grab your FREE download of the “Rooftop Deck Design Ideas Project Portfolio” and start designing your dream rooftop deck.
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How To Install & Build A Porch Roof
A porch roof is essentially composed of layers of specialized materials that are designed to last for many years of natural exposure. Above the structural trusses or rafters, your roof will be covered in 3/8 or 1/2 tongue and groove plywood. The plywood for the roof comes in 4×8 sheets and will hold the roof members together much like decking secures the deck frame. The next layer will be a minimum #15 roofing felt, which can be stapled in place over the plywood to create a water tight barrier for the shingles to cover. Install drip edge flashing to the lower edge of the roof and step flashing at the house wall.
Screw The Panels To The Purlins
Starting at one end, attach the first fiberglass panel to the purlin with the roofing screws. Place the screws in every other valley. Snug the screws enough to compress the washer slightly. Overlap the next panel onto the one you just installed and attach it the same way, this will make waterproof deck systems. When you get to the end, the last panel may be too long. You can just overlap it a bit more or cut it to fit. It’s simple to cut panels to length or width with a circular saw and a carbide blade.
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How To Install Radiant Barrier Roof Decking
Radiant barrier roof decking is a material installed in roofs to reduce the heat gained in summers and the heat lost in winters. Radiant barriers usually consists of a thin sheet of reflective material applied to one or both sides of the roof. They are durable, as well as easy to use or apply. They are widely used in residential, commercial and industrial buildings and can enable you to save up to 17 percent on your energy bills.
Installing radiant barrier roof decking is only a moderately challenging project. Using the tools and equipments below, as per the steps explained, you can go about the task with little difficulty.
How To Build A Gable Roof Over An Existing Deck
Building a gable roof over a deck is similar to building a slanted roof, with a few differences. First, you will need two more beams that attach from the house framing to the new beam youve installed that is supported by the new posts that will support the ends of the gable roof.
The new beams will be two or three 2x pieces of lumber laminated and supported by joist hangers on the new beam and the ledger board on the house side. These new beams will support trusses, which will be held in place by brackets.
Tying the new gable roof into the existing house may require you to remove some of the old roofing from the existing house. In some cases, the gable roof will be flush with a wall and not a roof, and this will make your life easier. Using flashing to join the house wall and new roof will help waterproof that joint, provided the flashing goes up and under the house siding.
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Tips Reducing The Problem Of Wooden Deck
- Properly ventilate the attic. This eliminates the amount of moisture absorption by deck panels and thereby reduces the amount of swelling and shrinking of the wood. This wood movement often causes the the buckling problems with shingles.
- Leave the roof sheathing panels to acclimate to local humidity levels before installation. This reduces swelling after the panels are installed and avoid buckling problems with shingles.
- Space deck panels 3 mm apart on all sides when fastening them to the roof framing.
- Immediately cover the roof panels with an underlayment after installation in order to keep the wood dry.
Roof Drain Sump Pan Description
The roof drain sump pan lowers or sumps the roof drain 2 below the roof surface. This effectively prevents rainwater from pooling on the flat roof.
It can be used on all thicknesses of roofs, with or without insulation. Some major roof material manufacturers recommend this style sump pan.
Roof drain sump pans are not supplied with your roof drain but can be purchased on this website.
If you know the pipe size you would like to use, then you are almost done. If you need to size your roof drain, please skip to the bottom of this page.
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Side Lap Connections & Tools
If you are responsible for the metal roof deck installation, then its your responsibility to make sure you purchase the correct metal roof deck type and correct side lap type. When you go to attach the side laps you don’t want to be surprised to find out that you purchased the wrong type.
For instance, if you purchased Type B-36 with a standard interlocking side lap and need to stitch screw the side laps, you will learn that it simply wont work. The side lap for stitch screw is different from a standard interlocking side lap.
If you find that you need a side lap connection tool such as the Button Punch tool we can loan you a tool so long as you purchased the metal deck from us. Or if you need to rent or purchase a button punch tool we offer that as an option as well. If your job calls for a PunchLok II tool, then you will need to contact your metal deck supplier to rent the tool from them. This tool can only be loaned out to you if you have purchased PunchLok II metal decking.
Whats The Difference Between Sheathing And Decking
Before we dig deeper into this posts main topic, we should first discuss the difference between roof sheathing and decking. The shortest possible answer on the difference between the two? There isnt any. Even though contractors call it differently, sheathing and decking are the same.
As we mentioned above, its an integral part of the roofing structure. Depending on the structures needs, sheathing can be open, closed, or with gaps between the boards.
In todays roofing industry, sheathing or decking is now widely used as an essential component of a stable and sturdy roof. It provides a solid, continuous layer that sits right underneath the top layer of your roof.
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How Much Does It Cost To Install Roof Decking
The price of roof decking can vary significantly based on many factors. The thicker the sheet is, the more expensive it is. Again, considering that one sheet covers 32 square feet, you can expect to pay anywhere from $60 upwards to $100 per single sheet of plywood.
For an average-sized home with a roof of 2000 square feet, this overall estimate ranges between $3600 and $6000. Also, its essential to keep in mind that the cost of the installation itself will also vary depending on your location.
With all of this in mind, plywood is the more expensive choice than OSB. If youre working on a tight budget, you can also use regular wooden boards. They are a viable decking option but are more susceptible to leaking and water damage.
Roof Drain Replacement Or Changouts
This is when you have existing roof drains in place that need to be removed so as to install new drains.
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Installing The First Section
How To Install Plywood Roof Sheathing
To achieve the clean straight lines that we all love about a home with asphalt shingles, the roof must be perfectly straight before the plywood deck is installed.
This is especially important when youre designing something like a Hampton-style home. The clean, straight lines of the roof are an essential factor in the houses aesthetic, and wonky lines are going to stand out like a sore thumb.
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Stitch Screw Side Lap
This type of sidelap connection is similar in strength to button punching. It requires a different side lap than the standard interlocking side lap. You will have to have purchased the metal roof deck with the stitch screw side lap. The side laps interlock and are connected with screws using a screw gun. On larger jobs, the cost of the fastener screws can begin to add up quickly. Be sure to put money in your budget for this item.
Blocking Your Roof Drain: What Does It Mean And Should You Do It
Blocking your roof drain means installing blocks on the ends of the sump pan that are not over the joists. Often the plywood on the roof is thin and when someone steps between the joists, we have what is referred to as deflection. The plywood bends away from the pan and roof drain. This can and will cause leaks. Placing blocks will provide support and prevent this situation. Do this if you have excessive deflection. This photo demonstrates
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Roof Deck And Roof Replacement
If youre wondering, Is it necessary to replace the roof decking when youre replacing the roof?, then the answer usually depends. Your roofing experts will inspect the decking for rot, dry rot or flexing of the boards. If those conditions are present, then its best to replace the affected sections. Any parts of the decking that are in good condition will remain.Texas Traditions Roofing is a leading source of professional roof repair and replacement services for residential and commercial properties. When youre ready to get started with a project, give our team a call at 415-4590. You can also fill out our contact form to schedule a no-obligation consultation. We serve clients in and around Georgetown, TX.
Prep House For New Roof Framing
If you install a slanted roof over your deck, your deck roof rafters will have to attach to your existing roof rafters or trusses. To do this, youll have to remove a section of existing roofing materials and sheathing, plus soffit, fascia, and any gutters that are in the way.
If your new deck roof connects to a flat, vertical face such as a homes exterior wall, youll need a ledger board fastened to a rim joist. Youll need to remove the siding to fasten the ledger. Once in place, the ledger can support beams or joists that will support rafters or trusses for gable or hip roof construction.
When installing the ledger board, youll need to put flashing over the top edge of the board. This flashing should go up and under your siding. You should use an adhesive to affix it to the sheathing beneath the siding.
Youll need to bend the flashing to sit flush over the top ledger board edge. The flashing should cover the top half of the ledger board. Once the flashing is installed, the rafters will sit on top of the flashing.
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How To Build A Deck Roof: Attach The Purlins
Plan to space the 2×4 purlins parallel to the house and 3 ft. on center. To provide drainage, the panels should slope toward the outside edge of the deck about 1/4 in. per foot. If the span under your deck is 12 ft., for example, the purlin at the outer end of the deck should be 3 in. lower than the purlin along the house .
First, mark all the purlin locations on the deck joists. Install the purlin along the house and the outer purlin. Then stretch a string between them. Measure down from the deck joists to the string at the other purlin locations. Those measurements will give you the widths of the spacer blocks.
Cut the spacer blocks and screw them to the bottom of the joists at the marks. Then attach the remaining 2×4 purlins by screwing them to the spacers.