Sunday, March 16, 2025

Sanding The Polyurethaned Flooring Earlier than The Remaining Coat (Plus, A Few Extra Particulars Of The Ground Ending Course of)

I didn’t get the ultimate coat of polyurethane on the flooring final evening earlier than I went to mattress. As y’all know, I typically don’t do lots of work on Wednesdays as a result of that’s my lunch day with my mother and brother, and I often don’t get residence till about 4:15. Then I spend no less than an hour making Matt’s dinner, spending time with him as he eats, and so forth. So if any work will get executed on Wednesdays, it gained’t be till after 6:00pm.

By the point I obtained residence, the primary two coats of poly had been completely dry, and the subsequent step within the course of was to evenly sand the flooring earlier than the ultimate coat went on. I had forgotten to purchase the correct sandpaper after I was shopping for all of my provides for the flooring venture, so I needed to go to the shop first, which put my beginning time round 7:30. Sanding the flooring took about two hours, after which cleansing up the entire mud and preparing for the ultimate coat of poly took one other hour. Beginning the ultimate coat of polyurethane at 10:30pm merely wasn’t an choice. However no less than the flooring are prepared for that ultimate coat this morning, and I nonetheless assume I may be on schedule to start out the closet tomorrow.

Anyway, I wished to again up a bit and provides some extra particulars of this course of as a result of I had a couple of questions concerning the merchandise and course of. First, I wish to make it very clear that mixing polyurethane and stain collectively is one thing you should do at your personal danger. I can’t assure that your consequence goes to be like mine, so if you wish to do this, please take a look at out the combination on some leftover wooden earlier than truly making use of it to your hardwood flooring.

I like to combine the stain with the polyurethane, particularly with a wooden like new progress pink oak hardwood flooring that has such darkish and visual grain, as a result of it evens out the looks of the grain and provides a lovely depth of colour to the wooden. I’ve solely ever executed this utilizing darkish stain, although. So I don’t know how it could work with a lighter stain.

Right here you may see the distinction the primary coat made on my flooring. The shiny half is clearly the half the place I had simply utilized the stain/poly combination, and you may see the way it compares to the a part of the flooring within the foreground of the image that simply has the stain on it.

Right here’s a take a look at the distinction it made within the closet. Keep in mind that this room has quite a bit much less lighting, so it seems that the poly/stain combination made much more of a distinction in right here, however that’s simply due to the poor lighting within the room. The ground is all the identical colour all through the bed room suite.

Merchandise I used:

To stain the flooring, I used Minwax oil-based stain, and I used a 50/50 mixture of Darkish Walnut and Particular Walnut. The polyurethane I used is the oil-based Minwax Tremendous Quick Drying Polyurethane For Flooring in a satin end, and for the primary two coats, I combined the poly and stain in a ratio of 1 gallon of polyurethane to at least one pint of stain (utilizing the identical 50/50 stain combination that I had beforehand used to stain the flooring).

To use the stain, I used a big 4-inch brush that was labeled to be used with oil-based stain/poly (like this one) taped to the top of a pole utilizing Tyvek tape (duct tape will work simply superb) in order that I may stand for the method relatively than having to get down on my knees to polyurethane the flooring. You’ll discover that this isn’t the type of brush made for staining decks. I personally assume these are a bit too cheaply made for staining/polyurethaning indoor hardwood flooring.

Why I used a brush as an alternative of an applicator pad

These 10- or 12-inch applicator pads (wool or artificial) which might be typically used to use polyurethane to a flooring are excellent when you’re simply making use of clear polyurethane proper out of the can. Clear polyurethane is far more forgiving, so when you apply some areas thicker than others (which can inevitably occur with these applicator pads), it actually gained’t make a distinction within the completed look of the ground.

However when stain has been added to the polyurethane, it makes an enormous distinction. If the polyurethane/stain combination isn’t utilized very evenly, or there are areas the place the pad pushes the poly right into a line the place you cease and begin the applying, it is going to be very apparent as a result of that space can be darker because it has a buildup of polyurethane with the colour added.

The appliance is way simpler to regulate with a brush. I utilized the poly in sections that had been about 3 or 4 ft large in rows that had been about 2 ft, and utilizing the comb allowed me to feather every new part into the moist polyurethane from the earlier part with out leaving any buildup of colour the place the 2 sections met. The identical idea applies with the overlapping rows. The comb allowed me to feather every new row into the prior row whereas it was nonetheless moist with far more management that an applicator pad would have allowed. The outcome was even colour over the entire flooring with no buildup of colour (comparable to traces left by the ends of the applicator pad) leaving darker areas wherever on the ground.

It’s positively a slower course of making use of it with a brush as an alternative of an applicator pad, however I feel it’s a mandatory course of when making use of polyurethane with stain added to it.

I discussed yesterday that I did two coats of the poly/stain combination. You may see right here the distinction that the second coat made within the depth of colour.

That brings us to yesterday, the scariest a part of the entire course of. It’s a bit nerve wracking to take a sander to a flooring that appears actually fairly, however it’s additionally a mandatory step earlier than the ultimate coat of polyurethane in an effort to get the very best ultimate consequence and the smoothest flooring potential. Utilizing my 5-inch orbital sander set to the bottom setting, and 220-grit sanding discs, I sanded all the flooring, ensuring that I used even strain and didn’t go over any of the sections a lot that it could take the colour off.

And sure, as soon as once more, this complete course of was executed on my knees. It wasn’t too unhealthy, although.

However let me let you know, it’s scary seeing the ground go from wanting like this…

to wanting like this…

However I simply trusted the method. The 220-grit sanding discs refill with mud pretty rapidly, so I needed to change them typically. And most of that mess is only a buildup of mud, so as soon as the mud was cleaned up, the flooring went again to wanting just about like they did earlier than sanding. Solely now, they had been a lot smoother.

As soon as the whole lot was sanded, I vacuumed up as a lot of the mud as I may with my store vac, after which I cleaned up the remainder with a humid rag. Right here you may see the distinction between the ground that had been wiped down and was beginning to dry (so it began wanting hazy once more) on the highest proper portion of the picture, the ground that had simply been wiped down and was nonetheless moist within the little hallway, and the ground that hadn’t been wiped down but on the left portion of the picture.

When cleansing up the mud with a humid rag, it’s essential to concentrate to what it appears to be like like when it’s moist, as a result of that’s just about what it’ll appear to be after that ultimate coat of polyurethane goes on. However as soon as it dries, it’ll return to wanting hazy once more, with some areas wanting hazier than others. That’s not an issue, although, as a result of the ultimate coat of clear polyurethane will even out the entire end. Right here’s what it appeared like as soon as it was sanded and dry. You may see that some areas seem hazier than others.

And right here’s the closet flooring sanded, wiped down, and dry.

And the lobby flooring sanded, cleaned, and dry.

As I used to be wiping down the flooring with the damp rag, I observed that I did find yourself with three very small (penny-sized) spots the place I took off a bit an excessive amount of of the colour. I’ll merely contact these up with a tiny little bit of stain and allow them to dry earlier than including the ultimate coat of polyurethane. So the flooring are wanting a bit tough proper now, however once more, it’s essential to concentrate to what they appear to be after they’re moist as you’re wiping off the mud. That’s when you may actually see what they’ll appear to be as soon as that ultimate coat of polyurethane goes on.

So I’ll do the ultimate coat this morning and provides the flooring all day and all evening to dry. This afternoon, I’ll make my purchasing checklist and reduce lists for the closet cupboards. The plan is to get the flooring lined tomorrow morning after which get began on my closet tomorrow afternoon!

 

 

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