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Questions tagged [attic]

Attics (also called "lofts") are the space immediately below a house's roof.

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4answers
679 views

Ok to add cellulose over blown fiberglass insulation?

I have an attic with blown in fiberglass insulation, probably original and 27 years old. The attic appears to have had some moisture issues in the past (bathroom vents being vented out of the soffit ...
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1answer
17 views

Should loft insulation cover wall cavities?

When insulating a loft at ceiling level with mineral wool type material, should the insulation cover the exposed wall cavities for external walls?
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2answers
72 views

Replacing attic light switch with Leviton combo

I want to replace and old Leviton attic light switch with a Leviton combo switch/outlet. The junction box has two Romex cables in and one out to the current light. The two in have each a black wire ...
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1answer
41 views

Why are some of my trusses nailed to interior wall top plate?

I am hoping someone can answer why I have multiple trusses nailed into the top plate of a small interior wall in my home. In the first image, I have highlighted in red where the trusses actually touch,...
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2answers
39 views

Does using an existing attic exhaust pipe to also serve air flow from a range hood cause smells/micro particles of oil/soot/etc to get into attic?

Our kitchen renovation contractor decided to change plans on us and vent the range hood out via the same pipe as was pre-existing to passively control the temperature in our attic, instead of vent out ...
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1answer
62 views

What are these thin boards resting on interior wall top plate for?

I am trying to figure out what these two thin (1x4?) boards being used for in my attic. As you can see in the second picture, they are running parallel to the roof trusses, and on top of the interior ...
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2answers
68 views

What is the term for a gambrel roof with an extra angle on each side?

What is the this roof style? Can it even be done with timber! Its not Mansard or Gambrel. Though similar to Gambrel notice the extra pitch. Any pictures, design, sketches of where this has been ...
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2answers
52 views

Should I keep attic gable windows open for ventilation?

Our attic only has a ridge vent (no soffits). It also has two windows on either end. It was recommended that we keep them open to help ventilate the attic. Is this a good recommendation? Should we ...
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0answers
20 views

Considerations for improving a cellar floor

I can think of several ways of improving a cellar floor surface. Before I outline them, here's a description of the situation: The house was built in approximately 1900. When I looked at it in May, ...
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2answers
51 views

Is 4“ Ducting Used for a 4” Bath Fan?

I'm interested in installing a bath fan and am currently planning ou the project. The fan specs (https://www.homedepot.com/p/Delta-Breez-GreenBuilder-Series-100-CFM-Wall-or-Ceiling-Bathroom-Exhaust-...
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1answer
30 views

Moving a Drywall & Trim Access Hatch?

I have a question similar to (Cutting ceiling joist for attic ladder install) but plan on making a typical access hatch out of drywall and trim. The question differs in other ways too. This may ...
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1answer
54 views

Restrictions on 90 Degree Elbow for a Bathroom Exhaust Fan?

The manual for a certain (100CFM/4") bathroom exhaust fan has a restriction on using 90-degree elbows close to the unit. Why is this? Is it okay to use 90-degree elbows further down the exhaust path? ...
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2answers
63 views

What Type of Ducting Should Be Used for a Bathroom Exhaust Fan?

I'm planning on installing a Bathroom exhaust fan (Just a note, the port is 4") and am curious as to what kind of duct should be used. I've heard that the duct should be insulated to prevent water ...
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1answer
78 views

What's the best way to insulate an attic with 2x4 joists?

My 1938 home currently has zero insulation (aside from a few fiberglass batts haphazardly tossed about). The ceiling joists are 2x4 (spaced 16 inch OC), rather than the more modern standard of 2x6 or ...
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1answer
38 views

Attic remodel, subfloor, electrical near by

I’m trying to finish an attic, however, can lights from the living room and other electrical peeks above the joist about an inch give or take. How would I finish the floor with those obstructions in ...
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1answer
29 views

Dumb insulation question

I need to install an attic floor in my workshop - currently the rafters are exposed. I plan to use 3/4 plywood, then run faced insulation, then install a ceiling at a later date as time permits. As ...
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1answer
31 views

Insulation and roof venting

I am in the process of finishing my bonus room (attic space above the garage). There are soffit vents and a ridge vent. If I put insulation in between the rafters before I drywall the ceiling, will ...
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1answer
40 views

Reduce high humidity in attic

My attic has high humidity. I put a combo temp-humidity monitor and it was in the high 70s. It’s 30 degrees outside. I’ve read about what could cause the high humidity and two key things came up: ...
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0answers
29 views

Insulating townhouse's attic sidewall?

Last winter, I've had some issues with ice dams on my roof. I live in a townhouse in Southern Quebec, Canada, in the middle unit, where lately temperatures during the winter can go anywhere between -...
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1answer
34 views

Should I install fiberglass batts underneath my existing blown fiberglass?

I have loose fill fiberglass insulation in my attic (picture below). I was thinking about upgrading the insulation because, from what I've read, this is one of the least effective insulation types. ...
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2answers
48 views

control for attic fan

I have an attic fan with an old (MH Rhodes 90015 /marktime) mechanical timer switch. I want to replace the timer with a thermostat (presumably a line-voltage thermostat). To my surprise, in the ...
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2answers
121 views

Run electrical wire outside in for new lightings for cathedral ceiling

This is my living room and I am planning to install 9 recessed lights on the cathedral ceiling. There is no attic space and there should be just 4-5" gap on top before it hits the roof. I don't want ...
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2answers
173 views

Can hanging a 70 lbs punching bag from my garage ceiling cause damage?

Took a look in the attic above the garage to find somewhere to hang my 70 lbs punching bag. After seeing what was up there, I wasn't sure it was a good idea anymore so I was hoping to get some ...
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1answer
342 views

Roofing nails protruding in attic dripping with condensation

After a re-roofing job there are hundreds of nail points sticking out in the attic. I use some of the attic space for storage so when standing up in there I get poked in the head, but also in freezing ...
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1answer
70 views

Do we need a gable vent, and in either case, how to vent bathroom fan outside (can it be via the gable)?

We need to put a hole from our attic to the outside, one way or the other. Before making any holes, I hope to hash out the details. Here's the goals: Make sure attic is properly vented Direct ...
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1answer
44 views

Want to update insulation in knee walls. Pictures of the inside. I think it might be worth taking the old out and redoing it all, thoughts?

I purchased a house in the Metro Detroit area. 1943 built. Cape cod bungalow, pretty sure. Last winter, I had pretty bad ice dams and would like to re-insulate the knee walls before it gets too cold. ...
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0answers
45 views

Loft elevator for human

Im thinking of implementing simple lift system to carry goods as well as a single person into the attic. 250Kg capacity electric hoist is good enough for this pupose but im concerned about safely ...
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1answer
114 views

How can I safely work in my attic without a floor in place?

Is there a picture that can I go up to the Attic. I am not familiar about it and how do I walk on the ones you don't want to fall on the drywall ? I went up to the attic entrance and took these ...
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2answers
330 views

Cutting ceiling joist for attic ladder install

Looking to take advantage of some open space in our attic and want to install an attic ladder. This would require cutting some of the ceiling joist. Before I do can anyone help me answer the following ...
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1answer
40 views

Are there insulated covers available for attic fans?

I have an attic fan that leaks a lot of attic air down to the living area. Are there insulated covers that can be placed on the underside, living area side of the fan that can insulate from the attic? ...
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2answers
54 views

Is it going to be worth replacing bat insulation with rigid foam between bedroom and garage?

I have the classic problem of two bedrooms above a garage that are too hot in the summer. In the winter it can be cooler upstairs than the rest of the house but not as much as a temperature difference ...
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1answer
92 views

What kind of Ethernet cabling would I need for through the attic - And what cat?

I'm putting in an ethernet cable in my attic to reach from my modem in my library to my room, where I have my computer and an extra router (for better WiFi). Currently, I get internet in there from ...
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0answers
60 views

Proper way to seal attic space from the living space

I am living in a one-story house with flat roof. There is an 2-feet-high empty space above the ceiling and below the roof, and let me call it my attic space (although my house has a flat roof). The ...
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1answer
37 views

Plugging holes in Top Plate wood?

So I was running Ethernet around the house, and there were a couple of places where the top plate holes were incorrect and I had to redrill (holes no bigger than a 3/4 an inch). I got everything ...
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1answer
724 views

What is this ceiling beam called above interior wall?

I'm attempting to add ethernet to a bedroom. This will involve drilling a hole from the attic to route the cables behind the drywall. I expected to see 2x4 above the interior wall but found a tongue ...
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1answer
46 views

Should I remove 4" of cellose insulation before adding fiberglass insulation?

My attic currently has 4" of blown cellulose insulation (to the top of the 2x4 joists). I plan on sealing air leaks and adding R-38 batts. The home was built in 1977 in zone 5. Should I remove the ...
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2answers
55 views

Making exposed structural wood look nice

I built a loft/bed in a bedroom. It uses structural 2x which will be exposed once the room is complete. The structural 2x (a vertical 2x6 post and horizontal 2x12-2 beams spanning 75% of the room) ...
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1answer
40 views

Improve HVAC in single upstairs room with vaulted ceiling

Setup: Our house is a two-story built in 2011. We have zoned HVAC off a single unit with electronic dampers. The upstairs has three bedrooms and two bathrooms. The master bedroom is the only room ...
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1answer
46 views

Attic Temperature Affected by Insulation

I recently moved into the attic and converted it into my bedroom, There was insulation on the floor but none on the walls which made it uncomfortable to live in considering its the summer. I got a ...
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1answer
49 views

How can I determine what is emitting chemical fumes in my home?

Our home is a reconstructed 1890's log home moved and rebuilt in the late 70's or early 80's. They used 1 inch thick styrofoam board in the ceiling under the pine tongue and groove. I think it is the ...
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0answers
122 views

1 1/2 story upstairs bedroom very hot

So I just bought a house and discovered the upstairs was what felt like 5-10 degrees difference from the main level. I'll try and add pictures of the insulation below. It seems well done but for some ...
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1answer
62 views

HVAC with long duct run has insufficient flow

Brand new system that feeds 3 bedrooms, one downstairs and two upstairs. The system is hooked up to 2 electronic dampers for zoning. The downstairs gets good and cold, however there doesn’t seem to ...
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1answer
59 views

attic floor insulation vs. attic roof insulation

My attic is finished; 3 rooms, wood floors, plaster ceilings. I've gotten conflicting advice: some say insulate the floor, others the roof. The attic will not be used as living space. There are no ...
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3answers
196 views

Ways to add proper ventilation to attic with ridge vent on roof?

We got a new roof about four ago. The attic is unfinished. It's a split level home, and hot as Hades upstairs. Unfortunately, the roofers didn't consider attic ventilation. They installed a ridge ...
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1answer
123 views

Attic Insulation in hot and humid climate

I am in central Texas and am looking to add insulation to my attic. My house is very old so I am pretty much starting from scratch as there is virtually no insulation. So far from what I have read ...
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2answers
743 views

Do I need to protect all wiring in an attic when adding a permanent ladder?

I am wanting to add a permanent attic ladder to create storage space in a big attic. There is already exposed wiring in a few places in the attic. If I add a permanent ladder, does that then mean that ...
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1answer
319 views

Can I cover insulation in my attic roof with plastic or plywood?

You can see into my attic a bit there (looking from the outside of the house into the attic), and it's insulation between the rafters. It's a small storage area and I'm tired of getting the itchies ...
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2answers
91 views

cold water too hot in AZ—worth it to insulate attic copper?

All of my plumbing runs through copper lines in an accessible attic in a 1960's slab-on-grade ranch style home in Phoenix, AZ where I don't need to tell you how hot the attic can get for a huge chunk ...
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1answer
46 views

Is it worth “piling in more insulation”?

In one area the laughable insulation in my attic looks like this: purely as a stopgap measure: is it worth simply ... get the keys to my kid's minivan and drive to Lowe's on the corner and get a ...
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2answers
53 views

In summer, should attics simply have fans or other ventilation?

The house we have in the US south seems to function in this way in summer: I know nothing about AC/insulation systems but it seems that: If there was simply airflow through the attic, it would stop ...