QA

Quick Answer: How To Polyurethane Hardwood Floors

How to apply material to the center of the floor: Immerse your roll or pad in the polyurethane. Start one foot from the edges of the first corner, and work polyurethane toward the edges, working with the grain of the wood. Use comfortable back-and-forth sweeps of three to four feet with the roller or pad.

Is it better to brush or roll polyurethane?

Don’t use rollers or foam brushes—they create bubbles. Your brush will be easier to clean, and will go longer between cleanings, if its bristles are dipped first in mineral spirits, if you’re using an oil-based poly, or in water, if the finish is water-based.

Can you just polyurethane wood floors?

As long as the hardwood floor don’t have any dust, you can apply another coat of water-based polyurethane without sanding. Three coats of oil-based polyurethane are all you need, whereas you can apply as many as seven coats of water-based polyurethane.

How do you prep a floor for polyurethane?

Use mineral spirits to clean the surface of the floor and remove all remaining debris and dust. Apply the mineral spirits to a clean cloth and wipe down the entire floor, paying special attention to cracks, edges, and corners. Allow it to dry fully before coating the surface in polyurethane.

How many coats of polyurethane should you put on a hardwood floor?

You should apply at least three coats of polyurethane on hardwood floors. Of course, this will depend on the type of polyurethane you are using. What is this? Oil-based polyurethane will rarely need more than three coats on floors.

Should you sand between coats of polyurethane?

Yes. Minwax Polyurethane should be sanded between coats. Sand with 320 grit sandpaper to get rid of any fine particles of dust that have settled on it while it was still wet. Sanding in this case not only allows for a smoother finish but can also help abrade the surface and increase inter-coat adhesion.

Is 2 coats of polyurethane enough?

2 coats of polyurethane are enough to protect the wood from moisture and contaminants. However, for added protection against water damage, about three or four coats of polyurethane would suffice.

Can you sleep in house after polyurethane?

We recommend a minimum of 2 days of socks-only traffic for floors finished with oil polyurethane. The house is not inhabitable for a minimum of 2 days after the job is completed, and better to stay out for at least 5 as the fumes/off-gassing is not advisable to breathe in, even if there are other rooms to sleep in.

Is 4 coats of polyurethane too much?

For ideal results, you should use about three or four coats. You will also have to wait quite some time between coats, as this polyurethane takes longer to dry. No matter how many coats of polyurethane you apply, it will always be quite a time-consuming process when using an oil-based finish.

Can I use a foam roller to apply polyurethane?

A simple foam roller wrapped in plastic an cloth makes an efficient and effective applicator for polyurethane finish. I’m an avid fan of wipe-on polyurethane, but I had trouble applying it with a rag. The folds in the material would often leave overlapping lines and other imperfections in the finish.

Which is better water based or oil based polyurethane?

Oil based polyurethane lasts longer than water based. There is no contest on the durability between the 2 options. Water based polyurethane has lower VOC’s – which is a bit of an environmental benefit (more about that in a moment) – but because it has lower VOC’s (Volatile Organic Compounds), it doesn’t last as long.

Can you polyurethane over old polyurethane?

As long as you use the proper steps to prepare the finish, you can put Polyurethane over old Polyurethane. But before you apply the topcoat polyurethane, you might have to sand the surface lightly using a dull 120 to 150 grit abrasive or using a heavy floor buffer.

How many square feet will one gallon of polyurethane cover?

Product Details Sheens: gloss, semi-gloss, satin Recoat: after 3-4 hours Dry Time: 12-18 hours for light foot traffic; 72 hours to replace furniture Cleanup: mineral spirits or paint thinner Coverage: 600-700 sq. ft. per gallon.

When can you walk on polyurethane wood floors?

Fresh polyurethane can be walked on as soon as all signs of wet finish disappear. You may be able to walk on the floor as soon as two hours after applying WBP and eight hours after applying WBP. You should wait two days before moving furniture onto a floor finished with WBP — four days for OBP.

How long does Poly need to dry?

Oil-based polyurethane dry time is about 4 hours for fast drying formulae. But some polyurethane finishes might dry within 24-48 hours. As for curing, you need 30 days to cure properly. The surface is ready for use after 4 days or more.

Do I need a sealer before polyurethane?

Oil-based polyurethane is a very durable and hard-curing finish. But polyurethane doesn’t bond so well over finishes marketed as sealers, especially over sanding sealer. This sealer is good for use under non-polyurethane varnishes because regular alkyd varnishes gum up sandpaper.

Can I use a rag to apply polyurethane?

Polyurethane is so durable and water-resistant, it has largely replaced shellac and varnish as a wood finish. Originally, it had to be brushed on, but different formulations mean it can now be applied as a spray or by wiping it on with a rag.

How do you smooth the final coat of polyurethane?

Sand lightly with 240-grit sandpaper between coats, then let the last coat dry for at least 24 hours. This is standard practice with any wood finishing job, and is nothing out of the ordinary. That said, sanding bare wood beforehand to create a smooth foundation is key.