Questions tagged [fiberglass]

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Is there a way to determine if cold spots on a thermal image are due to water?

Continuing my bad insulation smell saga, I've been exploring the room in question with a thermal camera. I have attached an example image that shows a cold spot in the wall (rest of wall is ~20°C). Is ...
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What is the proper name for this rubber edging trim for fibreglass?

I have a fibreglass seat pan, and it was damaged. What's the correct name for the edging stuff? I hope that I can find something large enough to cover the road-rash. There's a springy steel-...
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Locating the source of a fiber glass smell, or finding wet, dirty fiberglass insulation?

There is one room in my house that smells strongly of (what I think of as) fiberglass. Others have told me that fiberglass does not smell, unless it is dirty / wet / etc. They may be right, I do not ...
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Can I use my extra attic fiberglass on steam pipes?

I am about to insulate my steam pipes, which are currently exposed. I have a ton of extra attic insulation left over from another project. Can I use this (and some duct tape for shaping) on my steam ...
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fixing crawlspace insulation, can/should we use r-30 batting meant for attics?

Our kitchen floors (hardwood) are freezing, and we found that crawl space insulation below those floors appear to be poorly installed. First, the insulation appears to be installed upside down, with ...
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Fibrous, crumbling papery material falling off old mattress — what is it? Asbestos?

I’ve got a bed/mattress about 40 years old in my spare bedroom in Sweden. The bottom of the mattress is covered in this fibrous paper that has started to crumble on to the floor. It turns in to dust ...
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4 answers
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Should I insulate between my basement and main living floor?

I'm in my first winter in a ~140 year old home and attempting to improve efficiency / comfort. The home has a concrete basement (originally sandstone foundation) which is conditioned space, but in ...
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Should chunks of fiberglass looking material be present in my bypass humidifier?

See the attached photo. It's only really visible on the top here, but this fiberglass looking material (duct liner?) is present on all four sides. Should I remove this material, or otherwise work to ...
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Batts of fiberglass inside cavity return duct

My HVAC return ducts are run through the building cavities. In some places, this means a return duct is run through the joists in the basement ceiling (with a metal liner covering it). In more than ...
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Fiberglass fills attic rafters, planning another 3" of fiberglass perpendicular to rafters, but how should I navigate my attic after installation?

I have fiberglass filling my rafters, very nearly to the top. To meet my insulation target, I plan to install another 3" layer of fiberglass perpendicular to the existing fiberglass... but this ...
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2 answers
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Is this fiberglass insulation?

I'm having a difficult identifying the type of insulation behind a section of drywall. The home was built in North America around the 1940s. It's undergone several rounds of renovation projects and ...
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4 answers
134 views

How to temporarily join fiberglass poles?

I need to be able to repeatedly attach and disconnect two solid fiberglass poles. The poles themselves will be the same diameter (~3/8"). The joint doesn't need to be stronger than the poles when ...
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1 answer
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How do the pieces of this fiberglass tub surround attach to each other?

I have a Jacuzzi-brand tub with an integrated multi-piece surround that came with our house when we bought it. Probably installed in the 90s if not earlier, but I don't really know. This bathroom is ...
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Can you use a Swiffer dry cloth to pickup fiberglass dust?

Had to rip out some internal duct insulation in the mechanical room and I want to clean up invisible and small leftover fiberglass fibers. I also mistakenly used a shop vac initially so I'm afraid ...
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Is there a reason to choose taped fiberglass bats vs fiberglass tubes when insulating heating ducts?

I'm going to insulate the 6" round metal heating ducts in my crawlspace, and I have pretty good access. It's the SF bay area, so it doesn't get very cold. Is there a reason to choose taped ...
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How can I repair a cracked inground pool step?

The top step into my inground pool is cracked. I saw Repairing cracked fiberglass pool steps but it references "years old" technique without a useful link. If someone can point me to that ...
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How can I add more insulation to my finished attic walls without trapping moisture

I have a finished attic that has a kneewall insulated with fiberglass batts, insulation facing in. The batts fill the depth of the wall cavity completely to the end of the stud, there's no more room ...
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How to add insulation to ducts in hot uninsulated attic?

I have central air with ducts running through the hot, uninsulated attic (there is blown-in insulation between the joists to insulate the rooms below). Fortunately it's only about 25 feet of ductwork, ...
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2 votes
1 answer
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Ceiling fiberglass getting yellow because of bad primer?

We started to prepare an old reinforced concrete ceiling of a panel building for painting. We cleaned off several layers of very old soviet wallpapers, glue, paint, putty and other stuff. Then we ...
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How to polish an old dull fiber shower+tub combo?

I have a fiberglass bathtub and shower combo in a rental that's likely more than a decade old. The finish is very dull and feels almost matte to the touch. There are no noticeable scratches or peeling ...
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New fiberglass batts near HVAC ducts

I have R19 fiberglass batts in my attic. There are large soft insulated HVAC ducts covering the batts in some places. I would like to put in new R30 on top of the R19. What is the proper way to ...
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Need to develop a tapered spacer for under a car lift on an angled concrete slab [closed]

I need to fabricate/develop an angled spacer. 13 inch wide by 10 inch long, by 3/4 inch to 1 3/8 inch thick. This spacer is needed to go under two of the posts of a hobbyist car lift in my garage. ...
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1 answer
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air gap between insulation batts and subfloor

I'm looking at the insulation in a crawl space below the first floor of my home. Joists are I-beams (12" deep, model TJI 350), 12" on center. Insulation is R19 fiberglass bats, tight-...
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Repairing fiberglass garage door panel with large hole

This large hole came with the garage when we bought the house. I would like to repair this to make it look a lot better, and at least keep prowling cats out. The backing you see in the picture behind ...
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Repairing damaged fiberglass

I know this doesn't necessarily apply to home improvement, but I figured the bit about fiberglass repair might be useful to others here. I have a paddle board that has several cracks or damaged areas ...
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2 answers
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Will blown-in insulation work directly on the back of 12" square ceilings tiles?

We're renovating an extremely old house that we use as a camp that had numerous issues. ( Originally built circa WW2, but has had some work done since then. We use it occasionally in the warmer months ...
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Is it OK if I can feel fiberglass cloth texture after curing?

I'm restoring a popup camper (not technically home improvement, I guess, but the question overlaps just fine) and I covered up some holes in the aluminum roof with Bondo-brand fiberglass cloth and ...
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1 vote
1 answer
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Fiberglass appearing in home dust

Thin and very straight fibers have been appearing in household dust, primarily in the room which I occupy. I suspect these fibers to be fiberglass. These fibers shine/glint back if illuminated with a ...
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Fiberglass Ledger Board for Pergola

I am building a 20’x22’ attached Fiberglass pergola to my home. The ledger board is Fiberglas and a length of 19’. The pergola weighs approximately 700 lbs. The wind gusts can reach up to 50 mph, not ...
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159 views

Exterior Wall - Stacking Fiberglass insulation and Mineral Wool insulation

I am in the process of finishing my unfinished basement and had a question about stacking insulation. When framing the basement we realized we have alot of areas which have about 6~ inches of extra ...
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Fibreglass batt vs rigid foam insulation replacement in attic

Cleaning out attic in older 1954 rancher, original batt insulation badly damaged due to moisture (no leaks, but previous owners replaced roof in the winter) and rodents. Attic is vented via soffit ...
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Gel stain is too dark on a brand new fiber glass door. How can I fix it?

Can I take the stain off? Use a lighter stain on top? Or do I use paint on top? I hate the dark color and want it off. I wish we didn't stain it at all.
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Should I be concerned about painting fiberglass columns darker colors due to warp risk?

The 10ft wood columns supporting the South-facing portico at the entry to my house rotted out, so I replaced them with fiberglass. The rest of the portico is green with an LRV of 50; I'd like to paint ...
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3 answers
227 views

Do these insulation panels contain asbestos?

The landlord said that "it's plastic stock, left from renovation on windows" from another apartment. It doesn't look like plastic to me, but then again I don't know much (very little actually) about ...
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Crack in acrylic bath tub, but fiberglass is ok

I managed put a small crack in the corner of my acrylic bathtub. Looking underneath it looks like the crack is just to the acrylic, and the fiberglass shell is still in-tact. Is this enough to hold ...
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Fiberglass batts: how to cover the exposed paper?

I need to install fiberglass batts under my (raised) house. I have read that the paper should generally face the warm side, so it depends on where one lives. I live in South Louisiana, so I plan to ...
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Do I need to paint exterior fiberglass porch columns?

The vendor said I needed to prime and paint them. If I like the bare colour of them as they are now, I'm hoping I can just keep it as-is. Is there a reason that I would need to prime and paint them? ...
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Should I worry about this pipe insulation? (fiberglass vs asbestos)

I have found those pipes in my basement. I hope its fiberglass, but not sure if its asbestos, because it got placed in the 60's or 70's (in my country the use of asbestos got banned in 2005). These ...
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6 answers
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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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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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Are there square/ rectangle/ U openable/ open panel conduits that have one side panel that can be opened & closed?

Are there square/ rectangle/ U openable/ open panel conduits that have one side panel that can be opened & closed? Will be doing a up / down cable/ pull for current/ future optic Fiber etc. so ...
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Spilled paint thinner on fiberglass bathtub and took finish and color off

Dripped paint thinner on fiberglass / acrylic bathtub in several locations and left several “spots” ranging in size from 1” diameter to 4” diameter. Surface is smooth and appears to have only ...
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Insulating a basement bathroom

The new basement bathroom is framed and passed inspection. Ready to insulate and close. My first question is about the ceiling. We plan to use fiberglass batts between the joists in the ceiling. Above ...
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Waterproofing fibreglass door

I have a fiberglass door exposed to elements and the paint is starting to peel off. Can I spray any waterproof coat or sealer for wood surfaces from home improvement stores to protect the pain. The ...
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is it ok to peel paper from faced fiberglass batt insulation?

An above grade portion (wood framing) of my basement walls (in unfinished furnace room) is currently insulated with faced R19 fiberglass batts . It is very drafty because the batts dont fit perfectly ...
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Safely/cheaply covering fiberglass insulation in unfinished basement

The title covers the gist of it. The details: We bought a new construction house in Central Illinois. The basement is mostly finished with a family room, bedroom and bath, but there is an ...
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How do I protect the painted finish on my fiberglass door?

I just purchased a new fiberglass front door. It's a beautiful door, factory painted, but less than 24 hours later, we're noticing that the paint can easily be scratched off, and the rain splashing ...
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How to fill the cavity in a recessed door panel

I'm restoring the door to my dumb waiter. The door is 1" thick, plywood core, tin exterior (1/32"); the door is original and dates back to 1939. I want to make the door completely flat, then ...
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5 votes
1 answer
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Can fiber-optic data cable be run overhead to a garage?

I want to run internet from my main house to garage located few meters away. I plan to use fiber instead of cat5 to avoid reported problems of blowing out network switches. I could have made a trench ...
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4 votes
1 answer
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What's my health situation like living in an exposed fiberglass insulation for 2 weeks

My attic floor is covered with fiberglass insulation. I go to the attic very often. Sorting out winter/summer clothes. Or I go up to search for stuff as my attic is a short term storage. 2 weeks ago,...
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