As long as the new plywood itself can span the distance and carry the roof, wind, seismic and snow loads for your region, adding new ply over old is just fine. The new plywood thickness should be at least equal to the exusting plywood thickness.
Can you put plywood over an existing roof?
The risk is that many of the nails could miss the rafters, and will simply fasten the new plywood to the old plywood. The result could be a poorly attached roof surface, more vulnerable to wind damage.
Does sheathing go on the roof?
Roof decking (or roof sheathing) is the wooden boards that make up the foundation of your entire roof system. I like to say foundation because it’s what your shingles and the rest of your roofing components are installed on. Roof decking is one of the most important pieces of your roof system.
What plywood is best for roof decking?
CDX is the grade of plywood most commonly used for roofing (CDX plywood means it is Construction Grade for exterior purposes).
Can I put decking over plywood?
You can put deck boards over plywood. After setting in place your floor joists, install your plywood decking as the base and follow up with composite decking over the plywood. Laying plywood sheet before you fix your deck surface distributes the weight evenly providing a sturdier deck.
Can you put plywood over deck boards?
As long as your old deck boards are at least 5/4 thick and structurally sound, you can screw 1/2-in. pressure-treated plywood right over it and stick the flooring membrane on top.
How far should roof sheathing overhang fascia?
Measure up the rafter 45-3/4 inch from the cut end of the truss tail and snap a line along the trusses. This indicates the upper edge of the first row of roof sheathing—leaving enough overhang that the subfascia and fascia will tuck neatly underneath when the time comes.
What can be used for roof sheathing?
Oriented Strand Board (OSB) or plywood can be used, although plywood will provide higher nail head pull-through resistance. Use panels rated as “Exposure 1” or better. Install sheathing panels according to the recommendations of the Engineered Wood Association (APA). Use panels no smaller than 4 feet long.
Can I use screws for roof sheathing?
The cheapest and easiest is to re-nail or, better yet, screw down the sheathing when you replace your roof covering. The other approach is applying an AFG-01 rated adhesive to enable the roof sheathing to withstand pressure to 250 pounds per square foot or greater.
Can you lay decking on top of old decking?
In short, yes you can. You are more than capable of placing composite deck boards over existing wooden ones in order to save time and money from building an entirely new frame.
Can you lay Trex over existing deck?
Resurfacing your deck with trex® is easy to do, and the results are easy to love. If the boards on your existing deck are looking a bit worn – and the foundation and deck framing system are sound – you can simply replace the walking surfaces and deck railings with Trex decking and railing.
What can I put over a wood deck?
Installing outdoor tile over a wood deck can help to protect you from splinters, while offering the deck protection from sun and wear and tear. Rubber deck tiles are one popular choice for installations over decks.
Can you lay tiles on top of decking?
Installing tile over a deck over decking is similar to installing tile over a wood sub floor. Any tile that is installed over wood beams will require a flat surface for the tile. You can install tile over decking by first using an underlayment or backer board on the surface of the deck.
How do you cover an existing deck?
Popular coverings include awnings, pergolas, attached overhead coverings, roof extensions and arbors. The right type of covering is the one that best fits with the overall aesthetics of your decking while also adding practical utility to the space.
Can you pave on top of decking?
However, while you can technically lay pavers over an existing wood deck there is a serious amount of physical labor involved, as well as planning. In addition, there may be extra steps needed to strengthen the deck, but once everything is finished you will have a new paver installation that will last for years.
Can you put stone over a deck?
Travertine pavers are often installed at ground level over granular stone, but they can also be put in place over a wooden deck. Substrate systems can be used over the wooden frame so that travertine pavers can be laid right on top.
Can you flag over decking?
It’s possible to install flagstone over a wooden deck. If done correctly and with care, flagstone over wood deck can greatly enhance the appearance and, in some cases, the value of your house.
How do you lay decking slabs?
Quote from the video:
Quote from Youtube video: Go with the direction of the deck. So we're gonna get all that figured out get them stacked if they want to start laying.
Can I put decking over slabs?
Many homeowners already have paving slabs on their backyards. But the concern is whether you can install decking over them. Whether you can do it or not depends on many factors. In most cases, however, it’s completely okay to do so.
How do you build a deck over a roof?
Quote from the video:
Quote from Youtube video: So first the water proof deck itself. When you've got a deck like this you basically are building a bathtub on the outside of the house this is a flat roof.
