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Questions tagged [sheathing]

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10 votes
2 answers
3k views

OK to remove sheathe and have some wires bypass box?

We are installing a 3-way switch, light between switches and power into light. The light is a LED pot light. The light sits in a drop ceiling with lots of access. We don't really need to cut the red ...
Catherine's user avatar
  • 211
0 votes
1 answer
196 views

Why are house frames sheathed on the exterior side? [closed]

When houses are constructed of a lightweight frame involving plywood or OSB sheathing, why are these sheets always attached on the outer side (instead of the inner side) of the exterior wall studs? ...
benjimin's user avatar
  • 109
2 votes
0 answers
118 views

Re-Water proofing exterior wall after removing dry rot within wall

Dry rot was found inside an exterior stucco wall, water entered through holes from rusted-out bolts that were holding up some fake shutters and trim board. 2 studs about ~1 foot and a third stud ~2 ...
SeriouslyStan's user avatar
0 votes
0 answers
13 views

Proper flashing of sheathing to gutters/roof when resheathing exterior

Currently in the process of resheathing a small area of my house. Removed vinyl siding, foam sheet insulation, rotted out wooden siding, and asphalt paper (in that order). Replacing all with ZipSystem ...
Nathan's user avatar
  • 1
0 votes
0 answers
18 views

Should I cut the mud sill/top plates on a 16' wall 5.5" short to allow for the wall it butts into?

I'm building a hangar (think garage). After I put one wall up (all will be of 2x6 studs), I'll be continuing with 16-foot mud sills/top plates for the perpendicular wall. Should I cut those 5.5" ...
birdus's user avatar
  • 141
1 vote
1 answer
301 views

New siding done, removed gable vent, but no sheathing?

So I just had nice new James Hardie siding put on. They tore off everything, replaced the insulation from the outside, put on new sheathing, house wrap, and then Hardie board. Part of the contract was ...
negacao's user avatar
  • 850
1 vote
1 answer
2k views

Plywood subfloor: more seams or no stagger lesser evil?

I'm going to lay my 3/4 plywood sheathing subfloor perpendicular across my floor joists. My floor is 10x16. I've read to use full sheets and avoid using half/cut sheets as well as not having the seams ...
Foopysfarm 's user avatar
1 vote
1 answer
82 views

What brand and material is this insulating sheathing? [duplicate]

I'm doing some work on an external side doorway/threshold - the house was built in 1912 but had some additions and renovations in at least the '70s, maybe the '50s as well. As I was cleaning out the ...
TylerW's user avatar
  • 1,173
0 votes
1 answer
67 views

Wall sheathing sticking over the concrete base

I found that my exterior wall has more than one wood panels inside, and they are held together by a piece of steel on the bottom. And the wood panels just stick out from the concrete base. Is this ...
Haiyang's user avatar
0 votes
2 answers
657 views

Any reason to keep 55 year-old fiber wall sheathing during siding job?

Our 1965 DC-area home has original aluminum siding that is dented, scuffed, with drain-holes painted shut, and is so full of other holes and caulk-bodged window / door flashing, etc. that we are ...
user avatar
0 votes
0 answers
44 views

Will inspectors require a fix for pre-existing grading issues as I replace siding around an old house?

I am re-siding and probably re-sheathing a portion of my house. The house includes a carport framed in and converted to living space where the existing slab is only ~1" above grade. From what I'...
Bob's user avatar
  • 101
3 votes
2 answers
761 views

What is this sheathing/ board?

Can anyone tell me what this is please? My dad kept assuring me it was just "fluff board" with white paint, and nothing to worry about (i.e. not asbestos). Can anyone corroborate that? It's ...
Katrina Shannan's user avatar
0 votes
0 answers
147 views

Sealing - Do sheathing and bottom plate have to be sealed (caulked) in CA?

Context: I am about to place the house wrap on the sheathing of my house addition in California. I am looking at flashing my doors and windows properly to make the house water tight. I am looking for ...
Max's user avatar
  • 641
0 votes
1 answer
401 views

Spacing tool for joints - anyone know what the tool seen here is called?

Does anyone know what this tool seen at 4:48 is called? I tried searching for various names of what I thought it might be called but can't find anything. Or a similar tool would be fine - basically ...
g491's user avatar
  • 750
0 votes
1 answer
357 views

Window installation - if using a combined sheathing / siding product (LP SmartSide), should window fins be outside or inside of it?

The window instructions say to put the fins on the outside of the sheathing, but if a combined sheathing/siding product is being used (LP SmartSide 38 - model 27874), should the fins go on the outside ...
g491's user avatar
  • 750
3 votes
1 answer
986 views

Proper plywood and blocking pattern / approach for 12x10 roof?

If building a 12x10 flat-top roof with 10ft joists spanning the 10-ft dimension, what is the proper way to cut the plywood and position the blocking? I'm assuming I should cut the 4x8 sheets to be 4x5,...
g491's user avatar
  • 750
1 vote
1 answer
91 views

Should GC "Exposure 1" 3/4-in plywood be let to dry before screwing down as a deck / flat roof?

I'm wondering if shrinkage or warping will be a concern here such that I should let it dry first. It'll be covered by 30lb roofing felt, then roll roofing, then that sealed with Henry's 884 and 887 ...
g491's user avatar
  • 750
0 votes
0 answers
841 views

Options to repair/replace? Brick veneer siding has no ventilation, no flashing, and no house wrap behind

I bought a house in Longmont, CO, USA, about a month ago. It was built in 1998 and mostly has vinyl siding, with exception of some brick veneer. One of the previous owners had sealed two bad things to ...
JohnX's user avatar
  • 1
0 votes
1 answer
1k views

Replace rotted plywood sheathing behind stucco

I have a chimney chase where water was leaking down the side for years. I had the fireplace and flue removed. In the chase, the plywood sheathing has all rotted away from the stucco. I can remove ...
BigRedBettaFish's user avatar
0 votes
0 answers
241 views

Techniques for repairing asbestos siding with GAF Weatherside fiber cement?

My older (1930s) home is covered with asbestos siding over tar paper sheathing. Some of the siding is cracked/missing and some of the tar paper beneath it is torn. At present I can't re-side the ...
ehbowen's user avatar
  • 429
1 vote
1 answer
2k views

Why is there a fiberboard right behind my drywall?

My house was built in 1979 and is located in Quebec, Canada. I was trying to find stud behind my wall (it is an exterior wall) but my stud detector was returning nothing. I decided to cut the drywall ...
Nico's user avatar
  • 111
0 votes
0 answers
190 views

Replacing cedar shake siding and adding insulation

I have old cedar shake siding on a portion of my home, built in the 1950s, and am planning to replace it with a cement siding. Underneath the cedar are nailers, then the open cavity of the wall. In ...
user15741's user avatar
  • 226
1 vote
1 answer
4k views

Does sheathing overlap in corners and what happens to 8' walls?

Is sheathing supposed to overlap the corners? If not do you fill the corner with anything? If you plan to install rigid insulation over the sheathing does that change anything? If you do overlap, how ...
OrganicLawnDIY's user avatar
0 votes
1 answer
790 views

Close off an unwanted window

I have a window that I'm looking to remove from the middle of the kitchen and replace with cabinetry. I will replace the opening with new framing and OSB for sheathing outside. My question is ...
Longroadahead's user avatar
2 votes
1 answer
301 views

Do panel sheathing clips make a shear wall stronger?

In another answer it was suggested that Panel Sheathing Clips between sheathing panels in a shear wall "will add a great deal of shear resistance at a minimal cost." Is this true? If so, ...
KJ7LNW's user avatar
  • 1,205
2 votes
2 answers
1k views

Accidentally ran some plywood flooring parallel to joists on my shed. How big of a deal is it?

I'm building a shed/barn and apparently had a bit of a brain fart when nailing down the plywood floor sheathing. I nailed it down parallel to the joists (like t1-11 sheathing on an exterior wall), ...
The Shoe Shiner's user avatar
-1 votes
1 answer
277 views

Can I span 36” with SYP 2x4 laying flat as roof decking

I’m redoing my garage roof, which has a 12” slope over 14’. I have left over SYP 2x4’s and some microlam beams, but only enough to set at 36” OC. Can I span 36” with 2x4 SYP as my decking instead of ...
Bruno 's user avatar
-1 votes
1 answer
7k views

Measuring Jamb Depth for New Construction Windows

I am building a detached garage that is not going to be insulated, however I would like the option to insulate in the future if needed. Also, I am going to use 7/8" corrugated siding on the ...
EthanT's user avatar
  • 83
0 votes
1 answer
56 views

Sheathing layout on 14' wall. Efficient material use

I'm sheathing a garage with 14ft walls and with a panel of zip at 80$ I want to make sure I'm making efficient use of materials. On each wall there is a 2' cutoff if two 8' panels are use like ways ...
kaminsknator's user avatar
-1 votes
2 answers
577 views

Cutting off the tips of roof sheathing cap and metal screws so they don't show?

I am replacing a flat carport roof with PBR metal sheets over 5/8" inch plywood sheathing with underlayment. I know 1/2 inch is strong enough, but I was thinking more of the nailing. Anyway... ...
eaglerockdude's user avatar
1 vote
0 answers
202 views

Sealing sheathing to an ICF foundation

I am in energy Zone 4 and have a stick frame home on an EPS ICF foundation built in 2007. The rim board is currently just insulated with batting and it is a little drafty and I a little worried that ...
TBP's user avatar
  • 175
1 vote
0 answers
186 views

Delaminating roof sheathing in attic

I recently had my roof replaced. The roofer recommended that we also replace the sheathing so we did. As they were installing the sheathing I expressed concern that the sheathing had small strips ...
NJ Homeowner's user avatar
4 votes
2 answers
3k views

Why is my new home only sheathed with rigid material at some locations?

So today after a few weeks I went to go follow up on the progress of my tract home being built. Things are coming along well. One concern though I have that I found random was that there's about 60 or ...
Dan's user avatar
  • 41
0 votes
1 answer
827 views

Is Fiberboard sheathing under cedar siding ok with no vapor barrier?

I am patching horizontal lapped cedar siding on a 1950s house in Minnesota with fiberboard sheathing. I think it’s Nu-Wood. There’s no vapor barrier. I will have to put a vapor barrier per code where ...
Flipper's user avatar
0 votes
0 answers
753 views

Replace plywood sheathing under metal roof

I have a metal roof with exposed fasteners, and I have some mold in the attic on my plywood roof sheathing. The source of the moisture that caused the mold is already fixed. My mold inspector says ...
Robert Parker's user avatar
1 vote
1 answer
167 views

What type of insulation/sheathing material is this?

I have a house that was originally built in Chicago in 1954 that had an addition put on in the 90's. The original roof and part of the original exterior was built over is now visible in the attic of ...
Chet's user avatar
  • 31
1 vote
0 answers
190 views

Will plywood installed over Thermo-Ply cause moisture problems?

Having the stucco removed and HardiePank fibercement siding installed. The house has overlapped Thermo-Ply as the sheathing, and the contractor wants to put plywood over the thermo-ply. Should I be ...
Kyle's user avatar
  • 11
4 votes
2 answers
1k views

Framers installed shear walls, seismic hardware, and the entire roof with the wrong nails. What now?

I hired a framing crew to frame a new home in Anchorage, Alaska. When they were done I found that most of the nailing on the shear panels and seismic hardware was done incorrectly. Many of the shear ...
Alaska house's user avatar
0 votes
2 answers
2k views

Using sheathing as siding?

I'm building a rustic cabin this summer and looking to keep construction cheap and simple. Are there sheathing materials that can double as siding that folks would recommend? The cabin is small, 12'...
4restg's user avatar
  • 21
2 votes
2 answers
3k views

Should expansion gaps in an OSB3 roof be filled before installing EPDM roofing?

I've boarded a roof in OSB3 prior to laying an EDPM membrane. I've left 3mm expansion gaps between boards. Should these be filled with anything prior to covering?
Mightwork's user avatar
2 votes
4 answers
1k views

How to overwinter a roof during construction?

I am building a new detached garage, and the forecast this weekend is just warm enough that I plan to get my trusses and roof sheathing up. My sheathing is 5/8" plywood (not OSB). It's a single car ...
LShaver's user avatar
  • 1,296
1 vote
1 answer
1k views

Can I replace just part of a 1x6 roof deck with OSB?

Redoing Roof, Roof Decking is 1x6 inch planks, and some OSB so the sheathing is mixed materials. Is it ok to replace the lower half of the roof with 3/4 or 1/2 inch plywood and keep the top half ...
Tony G's user avatar
  • 13
0 votes
1 answer
861 views

1x8 roof sheathing VS plywood/osb

My 1955 home has a flat roof with 1x8 sheathing. It's time to replace the roof, and I am considering replacing blown-in attic insulation with batts, at the same time. The attic is only 20" between ...
dabi's user avatar
  • 973
0 votes
0 answers
1k views

Can I place a slide-in gas range up against plywood sheathing?

I'll be putting a slide-in gas range up against a knee wall. However, I planned on bracing the knee wall with 3/4" plywood sheathing from the bottom plate up 30", where it would be completely covered ...
DrTarr's user avatar
  • 396
0 votes
2 answers
1k views

Is it worth replacing my sheathing?

Rather large 2 story home in Western WA. I currently have cedar singles for siding that are EOL and I want to replace them along with the rotting fascia board with T1-11. It turns out the sheathing is ...
FuzzyWombatSoup's user avatar
1 vote
1 answer
1k views

Do I need to replace cupped/curled plank sheathing in my wall?

We gutted the inside of an old unventilated bathroom, and found extensive mold throughout the drywall and insulation. The exterior sheathing is old horizontal planking (probably dating back to the 50'...
alexw's user avatar
  • 505
0 votes
2 answers
374 views

How do I fit roof sheathing to an odd shape, such as a triangle?

I want to cut a Scalene triangle: A triangle with no congruent sides out of plywood to fill in an open space in the roof sheathing. I can't trace it from underneath; there are trusses in the way.
user avatar
1 vote
1 answer
568 views

How should plywood sheathing be detailed around bolts/bearing plates in seismic retrofit work?

The City of Los Angeles standard planset for seismic retrofits shows the anchor bolt's bearing plate (washer) resting on the sill plate (vs. resting on the 2x blocking of the shear wall). But there is ...
Phil Esra's user avatar
  • 718
1 vote
3 answers
24k views

What is the proper way to start sheathing an exterior wall?

On new construction, what is the proper way to install the exterior OSB wall sheathing? Should I go for a perfectly level sheet install, and then level each corresponding sheet or is it better to ...
CCCBuilder's user avatar
  • 1,421
1 vote
1 answer
83 views

Replacement Siding; Demo Complications

Location: Oklahoma City. Tornados and storms abound. A hail and wind storm has prompted the replacement of the vinyl siding. During demo of the damaged vinyl I discovered a wood siding layer ...
Derrick's user avatar
  • 11