Questions tagged [sheathing]

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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 ...
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0 votes
0 answers
30 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 ...
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  • 177
1 vote
1 answer
185 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 ...
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  • 111
0 votes
0 answers
54 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 ...
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  • 194
1 vote
1 answer
346 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 ...
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0 votes
1 answer
82 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 ...
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2 votes
1 answer
73 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, ...
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  • 461
1 vote
1 answer
174 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), ...
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-1 votes
1 answer
39 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 ...
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0 votes
1 answer
596 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 ...
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1 answer
29 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 ...
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-1 votes
2 answers
152 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... ...
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1 vote
0 answers
92 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 ...
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0 answers
75 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 ...
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4 votes
2 answers
2k 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 ...
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1 answer
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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 ...
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0 answers
161 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 ...
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1 vote
1 answer
118 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 ...
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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 ...
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  • 11
4 votes
2 answers
624 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 ...
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0 votes
2 answers
467 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'...
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2 votes
2 answers
2k 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?
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2 votes
4 answers
400 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 ...
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1 vote
1 answer
560 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 ...
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  • 13
0 votes
1 answer
469 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 ...
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  • 674
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0 answers
612 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 ...
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  • 356
0 votes
2 answers
832 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 ...
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1 vote
1 answer
578 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'...
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  • 475
0 votes
2 answers
248 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.
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1 vote
1 answer
459 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 ...
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1 vote
3 answers
16k 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 ...
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1 vote
1 answer
66 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 ...
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0 votes
1 answer
1k views

Should I Use 3/4 Inch Tongue and Groove OSB for Exterior Sheathing

I've recently built an addition and over ordered sub floor so the result is I have enough sub floor (3/4" tongue and groove OSB) to do a good amount of exterior sheathing. My question however, ...
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3 votes
1 answer
7k views

Should I replace entire houses sheathing?

I have inherited a 1950s house that has vinyl over original wood siding over old fiber board. Much of the house's siding is damaged and needs replaced. I'm thinking of replacing the full house's ...
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1 vote
1 answer
254 views

Can I cut up sheets of cement board and use it as wall shingles?

I have seen lots of great fiber cement board shingled projects popping up around my neighborhood lately, and would like to do the same for my garage. Currently it is done in vinyl which I absolutely ...
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2 votes
3 answers
16k views

How to install a house number plaque on vinyl siding?

I need to install house numbers on my house. I have obtained an aluminium plaque with the numbers and I'm now wondering the best way to install it onto the house. The house has vinyl siding, and ...
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1 vote
0 answers
2k views

Rotted Sheathing Above Fireplace

TL;DR - Is it possible to replace the rotted sheathing from the inside behind the brick fireplace and behind the header above the mantle So, my wife and I purchase a house about a month an a half ago ...
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2 votes
2 answers
5k views

Sheathing with Foam Board and OSB

I have read a number of other articles related to sheathing and the use of rigid foam panels for insulation and was wondering; is it possible to place a 1" to 2" rigid foam panel against the wall ...
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4 votes
4 answers
27k views

What type of wall sheathing is on my house?

My house sheathing is not a plywood - but some dark brown material. Click for larger view Does anyone know what that is? P.S. here's more higher quality images: pic1 pic2 pic3
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  • 664
1 vote
1 answer
446 views

Adding sheathing under a concrete tile roof

I have a concrete tile roof that has just the skip sheathing. Its common to get squirrels nesting up there because there is nothing there to prevent them from coming in through the eaves. Is it ...
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0 votes
3 answers
8k views

Roof Decking: Plywood/OSB over skip sheathing (decking) or should I strip to the rafters?

I have a shake roof (looks like the original from 1952!) with skip sheathing. Then an asphalt shingle re-roof over that (that makes 2 roofs in 60 years, thanks previous owners!). I have repairs and ...
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1 vote
1 answer
138 views

Conflict with roofer [closed]

I hired a local roofer to redo my roof. One of the items in the contract is to "INSTALL 7/16” OSB SHEATHING OVER EXISTING ROOF BOARDS." The roof boards are rough sawn 3/4 inch thick pine, with a 1/2 - ...
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0 votes
2 answers
2k views

Truss Spacing and Sheathing Type

We are putting a new roof on our house (framing and all). The engineer sent me three prints with different truss spacing (16",19.2" and 24" OC). For obvious reasons, I would prefer to use the 24" ...
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  • 275
0 votes
2 answers
4k views

What exactly is this fiberboard-looking sheathing?

My house appears to be sheathed in some kind of fiberboard product with a black paper facing on the inside. That rock-looking thing poking through is stucco. The house was built in 1972. Anybody know ...
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4 votes
2 answers
8k views

Does a deck band board go over or replace wall sheathing?

I can't find an existing question that completely addresses my question, so here goes. My outside deck was recently rebuilt by contractors selected by my HOA. The deck is effectively on the second ...
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  • 516
2 votes
1 answer
1k views

How should I mount external hardware to a Greenboard/EPS exterior wall?

The external cladding of my house is rendered NRG Greenboard (an EPS product). What is the best way to mount simple external hardware (specifcally, a hose reel) to this material? The reel itself just ...
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  • 201
4 votes
1 answer
2k views

What is the sheathing underneath my brick exterior walls?

I am trying to figure out what is inside of my exterior plaster wall that the brick is attached to. The house was built in 1946, has no insulation in the walls, and (oddly enough to me), has drywall ...
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1 vote
2 answers
380 views

How to insulate my garage walls using sheathing

My garage is a pole building type with pressed wood walls and exterior siding. I want to put sheathing on the walls for some insulation. The girts that the exterior wall is attached to are 1.5" x 4" ...
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  • 11
5 votes
2 answers
1k views

Can you have different types of vents on a single roof?

The attic of my house has serious ventilation issue and the sheathing becomes rotten. The roofing contractor suggests me to replace the rotten sheathing and install some ridge vent. His plan will ...
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7 votes
4 answers
14k views

How can I resheathe behind brick fascia without removing the brick?

The original builders of my house used a material called "Aluma Sheath", also known as Dennyboard, to sheathe my house. Dennyboard is a radiant coating on two sides of a 1/8 sheet of a fiberous ...
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