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Questions tagged [polyurethane]

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1answer
65 views

How are Clopay Intellicore garage door R-values so high?

Clopay's garage doors with their proprietary "Intellicore" polyurethane foam insulation claim R-values as high as 20.4 in a 2" thick door, or R-10.2 per inch. State-of-the-art spray polyurethane ...
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0answers
245 views

What is mineral spirits called in Australia?

I'm looking at cutting Polyurethane to use for a rub on finish, and the marvellous instruction articles and videos all say to do this with "mineral spirits". I am in Australia and unsure what this is. ...
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2answers
43 views

Polyurethane finish over stained wood - can I combine brush and rub on techniques?

I am finishing a coffee table with Polyurethane. Used it many times, but have never managed to completely eradicate those pesky brush marks on the final finish, despite sanding between coats. So this ...
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2answers
298 views

How drill polyurethane properly? [closed]

I am building an electric skateboard for which I bought a pulley with a belt that will transfer torque from the motor. This pulley is mounted on a wheel with 5 M3 screws and here is the problem. All ...
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0answers
35 views

Flat roof, polyurethane sprayed ceiling, holes in a air and vapour barrier

Ok guys, I really made a mess. I hired someone to spray my flat roof garage. I was going to put rockwool, but after researching those issues with flat roofs, i choose SPF closed cell. But it's not ...
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1answer
55 views

Will wood glue hold two pieces of wood with a polyurethane finish?

I have a piece of stained red oak plywood that is 1/4" thick and ~ 1 square foot in area. I will be gluing it to a 1" x 2" red oak board. Both the plywood and board have been stained and finished ...
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1answer
51 views

Is there a rubber type glue that sets in under 5 minutes?

I'm looking for a very strong glue, similar to sikaflex 227 Sika Sikaflex 227 Polyurethane Sealant Black is a one component, moisture curing, elastic adhesive/sealant that is used for ...
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1answer
54 views

Can hand-rub poly be poured (in drops) then spread?

The last time I applied polyurethane, I chose a variety called "diamond something or other". It turned out that the diamond variety dries so quickly that if I apply a brush stroke one way and then ...
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1answer
378 views

Reapplying spar varnish/urethane to exterior door

I have a 'knotty alder' front door that was refinished by a contractor last August. However, because the lower panel of the door has already deteriorated due to sun exposure, I decided to sand the ...
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0answers
35 views

How to determine the type of finish used on a piece of furniture?

I have a table that I want to add another clear-coat layer to (to smooth and level without sanding). It's already stained and sealed, so I want to choose a clear-coat (polyurethane, lacquer, epoxy) ...
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2answers
158 views

How can I blend sanded cedar into the surrounding darker wood with a polyurethane finish?

I applied unfinished cedar tongue and groove wood, to my ceiling and I applied one coat of minwax fast drying clear polyurethane to it. I noticed that one of the sections turned a light grey and ...
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2answers
1k views

Will filling gaps with epoxy in a new hardwood floor look ok?

I installed a floor made from locally produced, 3 1/4" hard maple. There are a few gaps under 1/16th of an inch that I don't like. I normally buy the best product for the application, but the stores ...
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1answer
28 views

Spot re-staining a shelf post poly?

I have some shelves I'm finishing using Minwax Wood Finish and MinWax Semi-Gloss poly. On one side of one of the shelves, there are some small damage marks. Long story short: Some masking tape got ...
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0answers
983 views

How to remove polyurethane from painted wall

I forgot to tape around a shelf that I covered with polyurethane and some got on my painted wall. I'm not sure what kind of paint it is but it will buff off with a wet cloth if you rub it too much, ...
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1answer
149 views

How to water proof chipped concrete around garage door

How do I water proof this cement wall around the garage door: Can I use something like a polyurethane crack filler or something: http://www.homedepot.com/p/Loctite-PL-10-fl-oz-Polyurethane-Concrete-...
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1answer
730 views

Using liquid sandpaper (deglosser) with polyurethane varnish

Revarnishing kitchen cabinets, using polyurethane (oil base) over existing varnish. Can I use liquid sandpaper to degloss the old varnish? What about in between coats of the new? Thanks!
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1answer
52 views

What product to use for sealing a wood tv stand

I just finished building a tv stand (it is basically the same design as this one but with modified dimensions to be bigger: http://www.ana-white.com/2012/05/plans/rustic-x-console) and have stained it ...
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1answer
777 views

What materials can be used to prevent polyurethane glue from sticking to unwanter surfaces?

I am making some board and batten shutters and am using four 5-inch boards to assemble each shutter (each board is ¾ x 5). Since they are going to be outside the house and exposed to the elements,...
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1answer
280 views

Does it make sense to apply a (Minwax) wax paste on top of a polyurethane/stain finish?

I have just finished a piece of wood that I intend to use as a writing/work desk with a polyurethane stain. I've seen some talk of it possibly being a good idea to apply a coat of rub-on paste wax on ...
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1answer
419 views

Should additional coats of polyurethane be applied after removing roughness?

Why did polyurethane make wood feel coarse? In reference to the above thread... If the first suggested solution seems to work to solve the coarseness issue, i.e. "polishing" the rough areas with ...
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3answers
184 views

How should I handle areas of soft polyurethane left after sanding?

Following 24 hour drying, sanding with 120 grit using handheld belt sander on very old pine floor, I vacuumed then damp mopped. Now I have spots of gummy poly throughout the floor. How do I proceed to ...
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1answer
94 views

Polystyrene scent in bedroom

I want to store boardgames on the top of the wardrobe in my bedroom. Unfortunately, there are a few screw and wooden lists on the top of it, which makes it impossible to store anything on the ...
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1answer
2k views

Changing sheen of polyurethane finish

I recently purchased a can of tinted polyurethane finish and applied it to the top of a desk. The desk had previously been finished but the old finish was cracked and coming off so I had stripped and ...
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2answers
980 views

Can water based polyurethane be used to prevent knots in pine wood from bleeding through white paint?

I am renovating an old house and, long story short, we have some very knotty solid pine wood planks. They're the economy - or "cottage grade" as menards calls it - tongue-and-groove, beadboard 0.5x4 ...
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0answers
348 views

Cover vinyl asbestos floor tile without making later flooring harder

I have a kitchen with 9"x9" vinyl floor tiles that I have just found out contain asbestos. Though they are at first glance in sound condition (only a very few small chips, all well-adhered, etc), ...
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1answer
329 views

Can I apply polyurethane to a new table? [closed]

I'm buying a new kitchen table and dining room table, and I'm trying to keep them from getting scratched from regular use. Can I apply several coats of polyurethane to a brand new table top to make it ...
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0answers
135 views

Polyurethane on damaged floor isn't creating smooth surface

I had the wood floor chipped from heavy object played on it, removing the varnish that covered that small area. I tried to fix it by first sanding, then polyurethane on a cotton swab as the affected ...
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2answers
353 views

Do I need to sand before recoating a worn polyurethane finish?

I polyurethaned a tabletop and some spots have worn off. What is my best option to fix this? Do I have to sand the whole top and re-apply?
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1answer
4k views

Are there masks that will reduce polyurethane's VOCs?

Cans of polyurethane state a number (250, 350, etc) of Volatile Organic Compound (VOC). When sanding wood, a NIOSH N95 is required to safely avoid inhaling the small particles, but.. Does a NIOSH ...
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2answers
4k views

What sandpaper grit should I use between coats of varnish?

I have just varnished pine furniture and due to my complete beginner skills, I did not paint it correctly. (I went over my previous strokes after the varnish was tacky and it now has a rough finish.) ...
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2answers
5k views

Applying polyurethane to a vertical surface?

I have built a set of free standing pantries. Each is about 3' wide, 2 feet deep and 6' tall made out of a combination of 3/4" maple plywood and maple hardwood. I have them all stained and they look ...
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1answer
573 views

Refinish Sections of Hardwood at a Time

The most feasible method of finishing all the hardwood in the home I am living in is one room at a time. The rooms all connect to a hallway. Will there be an ugly area (if I do one room's hardwood ...
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2answers
11k views

Can wallpaper be coated with a protective finish?

I want to use wallpaper as the decorative top to some nightstands I plan on making. The wallpaper by itself would probably not last too long especially with cups/glasses being set on them frequently. ...
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2answers
973 views

Polyurethane Curing - will blue tape or dropcloths damage it?

I just sanded, stained, and polyurethaned the floors in a house I am refinishing. I put on 2 coats of Ultra-Fast Drying Polyurethane for Hardwood Floors on Monday, surface sanded and added a 3rd coat ...
1
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1answer
64 views

Does oil-based polyurethane have any residual toxicity past setting?

Oil-based polyurethane reportedly has some toxicity during application, but it is easier to apply and provides a superior finish compared to water-based polyurethane. This means that while I may get ...
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2answers
2k views

Polyurethane “separating” on table top

Refinishing my kitchen table. The process so far: strip, sand (progressively moving through the grits), condition, stain, finish, sand,'finish again. Any ideas as to why a coat of Oil-based ...
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3answers
1k views

Is a “painting pad / sponge square” indeed the way to get a smooth wood surface after applying polyurethane?

My last polyurethane finishing experiment failed. I applied fast-drying Varathane to 3/4" maple plywood shelves. They were very finely finished before applying the polyurethane, and became very rough ...
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1answer
2k views

How hard should water based polyurethane get?

I made a farmhouse table and stained it with Rust-oleum water based stain and then use the Varathane Triple Thick Polyurethane on top. I have let the table sit out in the garage for a week to cure, ...
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1answer
349 views

Is this red oak or white oak hardwood flooring?

I am planning to change a room that has laminate flooring to a room that has 3/4" hardwood flooring. The rest of the adjacent rooms and hallways all have hardwood flooring 3/4". Initially I planned ...
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4answers
2k views

Paint vs polyurethane durability

For an indoor project that is likely to get bumped, knocked, etc. (e.g., door or window casing, cabinets, built-in bookshelves, etc.), should one expect that a good quality paint will resist chipping ...
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2answers
44k views

How best to remove fumes after applying polyurethane in a hardwood refinishing project?

I understand that oil based polyurethane used to refinish hardwood floors has a strong fumes and can stay for days. I also understand that opening the doors and letting air flow can help remove the ...
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2answers
306 views

Can I use 0000 steel wool to remove streaks in my polyurethane finish?

Can I use 0000 steel wool to make a better uniform finish?
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4answers
4k views

streaks in polyurethane finish on freshly stained farm table

I applied too much polyurethane finish on newly stained wood farm table while applying third coat. I tried sanding with 220 grit and applying a 4th coat but there are still very visible streaks. ...
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1answer
3k views

How can I remove scratches in polyurethane?

My husband and I have been building a farm table and we are oh-so-close to being done, but we are having issues in the final coats of polyurethane on the top. Here's a rundown: We stained the wood ...
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2answers
2k views

How do I avoid taking off the finish at the corners when sanding between coats?

I just refinished a dresser with a tinted poly finish to roughly match the other wood tones in its new room. I didn't do the greatest job in many aspects - it was my first experience with poly and I ...
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2answers
498 views

Can I follow shellac with polyurethane (water-based or oil)?

I just finished building kitchen cabinets out of African mahogany. I am ready to finish the project and I would really like to not screw it up. I'm wanting to use an oil-base penetrating stain and ...
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0answers
133 views

Dust after staining and poly advice

Two questions: How should I prepare for applying poly to new stain? I am refinishing a wood veneer table top. I stripped it back to the wood, and I have stained it with Old Masters Wiping Stain, ...
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0answers
423 views

Can I apply polyurethane to new engineered hardwood floors?

I just laid new engineered Maple 5/8in hardwood floors. They have a dull look. Can I polyurethane them?
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1answer
1k views

How should I sand before the final coat of polyurethane?

I have applied 3 coats of poly so far. I'd like to smooth out the surface before the final coat. What type of sander should I use: Square Buff Floor Sander , Random Orbit Floor Sander , or just a ...
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1answer
3k views

Concrete caulk vs expanding polyurethane crack sealant

I'm starting to finish my basement. First step is sealing up some various places water has come in over the years. I've already fixed grading outside, but also want to seal inside. I have one crack ...