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What do I need to add--thickness and material--over existing
What do I need to add--thickness and material--over existing 3/8" plywood subfloor over 16" o.c. joists and do I need to remove the 1/4" poplar underlayment first or can I sandwich it between the old … read more
PaulP324
PaulP324
consulting engineer
MS
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I need to know what the california residential code is for a
I need to know what the california residential code is for a front portch / covered patio on a concrete slab … read more
PaulP324
PaulP324
consulting engineer
MS
1,276 satisfied customers
In California, I have plywood sheathing overlapping my
In California, I have plywood sheathing overlapping my exterior walls and down about 1” over the slab. I have another 3” of slab until the ground level.What am I required to place as a water barrier i… read more
Expert
Expert
A three story house was built and sheethed with 3/4" inch
a three story house was built and sheethed with 3/4" inch cdx plywood and left unprotected for 24 months. there is discoloration throughout and some warping of 15% of panels around four sides. … read more
walkereng
walkereng
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Bachelor's Degree
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I have a 1x6 diagonal subfloor. The boards are not tongue
I have a 1x6 diagonal subfloor. The boards are not tongue and groove and have about a 1/4” space between each board. There was 3/4” hardwood floors on top of the subfloor. I am removing the hardwoods … read more
walkereng
walkereng
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I need to raise an unlevel garage floor that will ultimately
I need to raise an unlevel garage floor that will ultimately become a functioning part of the house. After subtracting the subfloor and hardwoods I'm left with about 3 inches that the floor needs to b… read more
StructuralEng
StructuralEng
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Bachelor's Degree
8,463 satisfied customers
In our San Diego residential home built in 1986 located near
Hello,In our San Diego residential home built in 1986 located near the top of a big hill/small mountain We recently had flooring failure of our luxury vinyl planks in our dining room (the LVP buckled … read more
walkereng
walkereng
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Bachelor's Degree
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In our San Diego residential home built in 1986 located near
Hello,In our San Diego residential home built in 1986 located near the top of a big hill/small mountain We recently had flooring failure of our luxury vinyl planks in our dining room (the LVP buckled … read more
StructuralEng
StructuralEng
Consultant
Bachelor's Degree
8,463 satisfied customers
I need to replace my smaller garage roof. It was done some
I need to replace my smaller garage roof. It was done some 10+ years ago,but the guy who did it used 1/2 inch plywood,that started warping at the edge and sort of buckling in between rafters. When it … read more
Expert
Expert
I have previously requested info about this to which the
I have previously requested info about this to which the result was that I needed reinforced joists. I changed a ton of the parameters, researched and changed a whole bunch of assumptions and found ou… read more
StructuralEng
StructuralEng
Consultant
Bachelor's Degree
8,463 satisfied customers
I am looking at joists that are 2x4 top and bottom with some
I am looking at joists that are 2x4 top and bottom with some type of metal or iron in between. 24" centers. plywood sub is 4x8 23/32. I need to install 5"x3/4 Hickory. NWFA/APA say I have to add anoth… read more
StructuralEng
StructuralEng
Consultant
Bachelor's Degree
8,463 satisfied customers
I have a manufactured home that was flooded. the crawlspace
I have a manufactured home that was flooded. the crawlspace was completely submerged. I actually fell through the subfloor it was so wet. Do we need to replace the joists as well? the floor is coming … read more
walkereng
walkereng
Consultant
Bachelor's Degree
4,728 satisfied customers
Water apparently has come from under the concrete slab of my
Water apparently has come from under the concrete slab of my house, causing some changes in my hardwood floors in two areas of one room. I do not have a leaking pipe. I have taken measures to keep wat… read more
walkereng
walkereng
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Bachelor's Degree
4,728 satisfied customers
I would like to talk by phone. A few days ago, you gave me
I would like to talk by phone. A few days ago, you gave me specs for using I-beams for an underground shelter. As an option, my carpenter is recommending using 3 1/8" x 13 3/4" Lam Beams centered on 2… read more
StructuralEng
StructuralEng
Consultant
Bachelor's Degree
8,463 satisfied customers
Remodeling a kitchen into a great room area supported by a
Remodeling a kitchen into a great room area supported by a 19' joist span, with a finished basment below. Remodel includes an island with granite top. Joists are 2x4 engineered joists x 12" tall with … read more
StructuralEng
StructuralEng
Consultant
Bachelor's Degree
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I have a laundry room that is roughly 6x4.5. I want to put
I have a laundry room that is roughly 6x4.5'. I want to put an stack washer/dryer(350lb) next to a 40 gallon water heater (approx 500lb). The floor is 2x10 on 16" o.c., 3/4 plywood subfloor. Its in th… read more
StructuralEng
StructuralEng
Consultant
Bachelor's Degree
8,463 satisfied customers
What is the best method of constructing a subfloor over a non-level
What is the best method of constructing a subfloor over a non-level concrete slab that is on grade, please? I must construct a subfloor on a concrete slab that is not truly level. The subfloor must be… read more
StructuralEng
StructuralEng
Consultant
Bachelor's Degree
8,463 satisfied customers
We took in a small porch into our kitchen. The porch had a
We took in a small porch into our kitchen. The porch had a small slant on it. Small shims were up in to level the floor. However, the 3/4 inch was to thick where it joined to kitchen floor. This was n… read more
walkereng
walkereng
Consultant
Bachelor's Degree
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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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