Mid Span Blocking: Why Do It & How? || Dr Decks

Рет қаралды 111,820

Жыл бұрын

One of the most important parts of deck building is making sure it is stable. One of the simplest and best ways to do it is to add mid span blocking. We'll show you how to do it DrDecks style.
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Пікірлер: 96

@BestSpatula 9 ай бұрын

Thanks for your content. I am almost complete with my first deck and your channel has been by far the most helpful.

@vl4n7684zt Жыл бұрын

I re-decked mine with existing good joists and ledger connections, about 15 ft span. In addition to copper coat and joist tape on the top of the joists, I added blocking and it stiffened it up really good. made a world of difference. thanks for the tip!

@contractor556 3 ай бұрын

I’ve had an Irwin quick grip for about 3-4 years now, moderate to heavy use and man does that thing work amazing and grips as strong as it did brand new!

@1coolcontractor 11 ай бұрын

I’ve build about 40 decks over the last 20 years. I always let my joist run wild, start at the house and 2’ or so from the outside of the deck calculate my rim and facia with a 3/4” overhang and cut my joist accordingly. Thanks for all your great content!

@fluxcapacitor1621 9 ай бұрын

Excellent presentation and explanation.

@Joe-jv5mm 3 ай бұрын

Tips and Hints 100% Thank You!

@mamounalmaslamani5319 8 ай бұрын

شكرا على هذا المجهود

@nagadsby9413 Ай бұрын

Great idea on the clamp holding the blocks in place while you screw them in.

@toterola451 Жыл бұрын

Thank you!

@drdecks Жыл бұрын

You're welcome!

@dilldowschwagginz2674 11 ай бұрын

I see you run Metabo tools too. I have just about every make/model of 1/4" impact you can think of but for most jobs I grab one of the triple hammers. They're just so damn good and compact to get in tight spots like between 12" centers joists

@donpearsall7870 7 ай бұрын

Hello Doctor! Question: I will be installing decking boards with picture frame on the outside. I know I have to block the outside double rim joists to support the decking boards. Question is - will the 4" Fastenmaster screws be OK to fasten the blocking? Or does this require joist hangers? Thanks! I am learning a lot from your videos.

@TheRealStevenGoobers 5 күн бұрын

Love the vids, I'm not necessarily new to the building process, but I lack the knowledge of wood types used. What wood did you guys use for the fascia?

@aclive2022 6 ай бұрын

can you just use 3-1/2" galv. framing nails?

@Muscratz-N-GroundHogz... Жыл бұрын

Did he take the time to draw that center line on both sides of each joist ?

@tundrawhisperer4821 Күн бұрын

They make a structural flat head screw, which would sit flush with your framing surfaces. 😁👍🏻

@affordabledesertliving3487 8 ай бұрын

This so depends on having some nice quality straight lumber. Sometimes not so easy to obtain.

@victorvek5227 5 ай бұрын

Glue & screw, or just screw, in a basement ceiling retro-fit situation?

@nestornarvaez8416 11 ай бұрын

Grasias

@theyard6958 10 ай бұрын

Holy shit! at least 30 flippin block, if they stopped at the corner. that 120 4' Timberloks. Thats a little less that 100$ just for screws, not including labor and blocking, DAAAANG! I love it. No expense spared! I would have likely not thought it necessary for those, over the 3.5 inch construction screw. Hey Dr., Do you think construction screws would be ok for this? They would be better than nails , right? Hey Doc. Thanks. Im new to the channel. I subscribed last week and already am about 10 videos in. Great helpful information from a master to a small-time contractor cutting his teeth! Again, Thank You!

@MrDougfunny7 9 ай бұрын

he has that luxury due to customer base for the level of deck he is building. best practice isn't always affordable to everyone.

@douglasmichel6361 Жыл бұрын

Blocking is really for keeping joints plumb/vertical which is in their strongest state . Also for transferring loads from joist to joist as if they’re one. Each one assists the adjacent in carrying the live and dead loads.

@cletusmax77 8 ай бұрын

Yea, it does all the other stuff the guy said in the video too.

@TheChupacabra 8 ай бұрын

The failure mode of joists is twisting more so than snapping. The blocking fixes that

@The_Red_Squirrel 3 ай бұрын

Good explanation of the purpose of strutting. Either solid or herringbone strutting are common forms of stiffening floor joists.

@majermike 2 ай бұрын

@@TheChupacabra doesn't the decking prevent twisting?

@Alaska-Bush-Mom 10 күн бұрын

What is the length of your clamp?

@dustinmarquand5301 Жыл бұрын

Good video. One note. I've been called out by my inspector here in WI/MN for not using full height blocking. I now usually just use joist material and rip 1/2" off for flushing up...

@drdecks Жыл бұрын

Understood. I explained that we’re running a waterproof bladder and needed to keep the blocks low.

@dustinmarquand5301 Жыл бұрын

@@drdecks yep same here. I was using rain escapes. I think inspector just wanted to give me some grief.

@majermike 2 ай бұрын

@@dustinmarquand5301 so how did you fit the rain escapes in?

@dustinmarquand5301 2 ай бұрын

@@majermike we just recently did one again and cut a bare minimum "u" shape or dish out where rain escape passed over it. this inspector didn't look twice at it 🤷

@Pro-ez9eb Ай бұрын

Code is 60% of joist depth, at least over a beam. I’m sure the inspector wouldn’t like to be schooled though…

@malikto1 Жыл бұрын

How do you feel about self-supporting decks? Not needing a full ledger board attached to the house is something I like.

@jgeisler Жыл бұрын

What drill/driver do you use? I like how compact it is.

@drdecks Жыл бұрын

Metabo HPT Triple hammer

@SweeturKraut 4 ай бұрын

A good stiff deck is good to have.

@Gizmo82477 Ай бұрын

It’s also called solid bridging. Makes the joists work together

@grumpytuber Жыл бұрын

couldn’t you use framing nails here in stead of structural screws for the blocking?

@miked5106 4 ай бұрын

tough to get hammer in the for top nail.

@contractor556 3 ай бұрын

Even with a nail gun , nails always end up getting squeaky and sometimes loose. Idk how many nails I’ve had to pull out during floor installs and replace with screws.

@XYooper906 Жыл бұрын

I've never seen pressure treated lumber like this in the southeast US. What species wood is it, and why the patterned indentations on the lumber?

@kylet3589 Жыл бұрын

I don't know what species he's using but the perforations are to allow the pressure treatment to soak in deeply

@theinsaneshecklador6598 10 ай бұрын

He's mentioned in a few videos that it's pressure treated Hemlock and isn't readily available outside of the West Coast. He also mentioned the indents help the chemicals soak into the wood during the manufacturing process.

@majermike 2 ай бұрын

southern pine doesn't require incising for preservative uptake, douglass fir and hem fir require incising for preservative uptake

@colinriley4348 2 ай бұрын

What are the dash marks in all your boards? I’ve seen that on a couple videos and I’ve never seen wood like that. Maybe I’m dumb for asking.

@dharnish256 2 ай бұрын

That's pressure treated wood...The cuts are to allow for the chemicals to seep into the wood.

@Palantir_Daily Жыл бұрын

When would you do mid span blocking vs V bracing

@MrDougfunny7 9 ай бұрын

mid span blocking is always needed. v bracing is used when needed to stop a deck from swaying.

@majermike 2 ай бұрын

@@MrDougfunny7 why would mid span blocking always be needed? I'm a structural engineer and I don't see much purpose, "needed" is a strong word

@tafisher4495 Жыл бұрын

I thought code requires mid-span blocking to be a minimum of 60% of the height of the joist....am I wrong?

@bermudarailway 2 ай бұрын

In the UK its 75 %

@majermike 2 ай бұрын

in the US there are various requirements for blocking, but since this blocking is not a structural requirement at all, no minimum exists

@mikeyjohnson1696 5 күн бұрын

The log hog is the clamp Einstein

@edadan 10 ай бұрын

Can anyone tell me what type of lumber is being used here? I see some type of machining marks on the lumber but I don't recognize it. I live in the south and the only thing that I can get at Lowes/Home Depot is cedar of pressure treated pine.

@drummerforpeace 4 ай бұрын

It's likely pressure treated douglas fir. Pressure treated southern yellow pine is a good bet too.

@majermike 2 ай бұрын

@@drummerforpeace no, SYP would not have incising marks

@tundrawhisperer4821 Күн бұрын

@@majermikeWhat is SYP? Thx

@gsxrsquid 4 ай бұрын

With those 4" screws, it spitting a problem on the blocks?

@user-jx9zp4ye1x Жыл бұрын

What are the dimensions of this deck? Are far are the joists Spanning from the house ?

@24June91 10 ай бұрын

Why do you ask that question? It is the first thing he said in the video. 16 Feet, 30 joist, 16inches on center.

@Historyprepares 9 ай бұрын

I think code says the block must be 60% or more of the joist height

@BobHolster-om8rf 4 ай бұрын

HI. WHAT IS THE TYPE OF JOIST MATERIAL AND WHAT ARE THE MARKS? DOES IT HAVE SOME TYPE OF PRESSURE TREATMENT?

@DailyBrusher Жыл бұрын

So, on a 16-foot joist span, did you think about two rows of blocking? To make 3 sections of 5 ft 4 in each? I am working with 2x10 joists, a span of 12 feet, and I thought maybe I should have two rows of blocking, and that's 4 feet shorter than yours! But I don't know, that's why I'm asking!

@drdecks Жыл бұрын

I feel this method is sufficient

@Joe-oi6eh Жыл бұрын

@@drdecks the dr has prescribed 😎

@adjusterneal1439 11 ай бұрын

Nails will loosen. Screws will hold tight.

@FreshKicks4545 10 ай бұрын

I ran a similar method. Instead of a 12 foot span it’s about a 6 foot span. Would you recommend mid blocks in the center?

@michaelshelnutt3534 3 ай бұрын

Is blocking required for 2x8 on an 8 foot span, 16" OC?

@majermike 2 ай бұрын

no, why would you block it? what purpose would it serve? waste of money

@tundrawhisperer4821 Күн бұрын

Block mid span of anything 10’ or longer. 😁👍🏻

@tommywatterson5276 3 ай бұрын

Ties the joist together for additional strength and stops sagging.

@MrSubliminalStudios Жыл бұрын

Anybody else see how they cut off one of the flanges on the joist hanger? Look at the joist by the corner of those. I hope Decks M.D. here makes a video about inverted flange joist hangers on the corners. Idk about simpson but mitek/usg says NEVER to modify their hangers.

@dustinmarquand5301 Жыл бұрын

Looks like it's a corner joist/angle hanger. Different from an inverted...

@drdecks Жыл бұрын

It’s not modified. It’s a L90Z.

@redmonkeymakers Жыл бұрын

@@drdecks I didn't know you could use those at the start/ends of joist runs. I was planning on using concealed joist hangers, but would rather use L90Zs

@nbco55 10 ай бұрын

@@redmonkeymakersI still would use the inverted.

@CybekCusal 11 ай бұрын

I prefer straight line blocking

@MalleusDei275 22 күн бұрын

Did you crown the board you cut the blocking out of....then install each block crown up.

@MalleusDei275 22 күн бұрын

Simple sense...😅

@Don-pq5gg Жыл бұрын

How about using nails rather than screws? Especially since you are using the clamps.

@vincentjackson3472 Жыл бұрын

Screws are always better, but nails do work ofc

@drdecks Жыл бұрын

Nails will work but may loosen up in the future.

@leestebbins5051 5 ай бұрын

A 2x 12 is the same thickness as a 2 x 4. Twelve is the width of the board.

@raydavis168 8 ай бұрын

I’ve been building decks for 20+ years, I have never seen a 16’ deck without a center support, where are you building theses decks at. When you have a a deck 12’ in depth code requires a center support.

@derekofbaltimore 3 ай бұрын

Why would a 16 foot deck require support in the middle but a 16 foot ceiling/2nd floor doesn't? Or maybe i misunderstood what you meant

@raydavis168 3 ай бұрын

Because you don’t have a live load on your ceiling,where as your deck you have a number of people at certain times

@derekofbaltimore 3 ай бұрын

@@raydavis168 i meant the floor joist of a second floor are the same joists for the first floor ceiling. There will be people and objects resting on those joists above... Right? I dont know. Ive never built a house or a deck so im probably missing something obvious

@raydavis168 3 ай бұрын

@@derekofbaltimore my bad I misunderstood your question. I thought you were talking about just a ceiling.

@portagepete1 3 ай бұрын

Before long that will get all lose and wobble like It's not even there. You should use all thread with nuts and washers.

@tomgray-kk7xf 25 күн бұрын

He said thick joists he meant tall

@westensanchez9483 Жыл бұрын

Just use nails for the blocks. Why would you waste all that extra money for structural screws?

@majermike 2 ай бұрын

@h2s142 are you a bot?

@robcollins3907 26 күн бұрын

Structural screws are stronger and hold together far better and longer than any nail. The technology with screws has come a long way. Screws always had the holding power and now with structural screws they have the shear strength as well.