Questions tagged [fiberglass]

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2 votes
3 answers
78 views

How can I waterproof an exposed porch with a basement room underneath?

I am replacing a front porch, it currently is an elevated porch with your typical dirt and debris underneath, and it is an open porch. I intend to excavate a new basement room underneath it, cutting ...
-1 votes
1 answer
39 views

flooring cover near shower

I have a fiberglass shower, and the image below shows a slight tilt in the floor covering; likely due to water. Can I use something like a Silicone tape? I want to make sure that the water doesn't get ...
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1 vote
2 answers
243 views

Can I recaulk joints in a fiberglass shower surround after removing old caulk?

There's a fiberglass shower stall in my bathroom. It consists of two wall panels and one pan, and there seems to be glue/caulk in the seams between them, as shown in the photos. I wonder if I can ...
0 votes
1 answer
269 views

Insulating under the staircase from the crawl space - faced fiberglass insulation ok?

Our house is built on a slope, so the staircase to the bottom floor is right above the crawl space (vented; climate zone 3). The staircase is carpeted, and there's no insulation underneath. I can ...
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0 votes
1 answer
71 views

Leaking stand-up fiberglass shower

I have a small stand-up fiberglass shower that is leaking water into my closet which is right next to it. I have pulled back the carpet and dried the water up, but it keeps leaking water. Even after ...
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0 votes
1 answer
91 views

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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0 votes
2 answers
78 views

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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0 votes
1 answer
217 views

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 ...
  • 551
1 vote
1 answer
122 views

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 ...
0 votes
1 answer
261 views

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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0 votes
1 answer
175 views

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 votes
4 answers
4k views

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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0 votes
2 answers
131 views

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 ...
  • 551
0 votes
1 answer
200 views

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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-1 votes
1 answer
52 views

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 votes
2 answers
85 views

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 ...
1 vote
4 answers
293 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 ...
1 vote
1 answer
123 views

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 ...
0 votes
0 answers
173 views

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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0 votes
1 answer
51 views

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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1 vote
0 answers
295 views

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 ...
0 votes
2 answers
135 views

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 ...
0 votes
2 answers
591 views

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, ...
2 votes
1 answer
79 views

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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0 votes
1 answer
276 views

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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1 vote
2 answers
291 views

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 ...
0 votes
2 answers
259 views

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. ...
0 votes
1 answer
399 views

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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1 vote
2 answers
832 views

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 ...
-1 votes
2 answers
132 views

Repairing damaged fiberglass [closed]

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 ...
1 vote
2 answers
155 views

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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1 vote
1 answer
118 views

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 ...
1 vote
1 answer
1k views

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 ...
0 votes
0 answers
79 views

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 ...
0 votes
2 answers
261 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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1 vote
0 answers
174 views

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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-1 votes
1 answer
380 views

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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0 votes
0 answers
179 views

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 ...
0 votes
3 answers
284 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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0 votes
0 answers
1k views

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 ...
0 votes
1 answer
326 views

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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2 votes
1 answer
217 views

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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1 vote
1 answer
2k views

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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2 votes
6 answers
11k 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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1 vote
1 answer
159 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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0 votes
2 answers
131 views

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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0 votes
0 answers
207 views

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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0 votes
1 answer
886 views

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 ...
0 votes
0 answers
55 views

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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1 vote
1 answer
7k views

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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