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What do i buy to sand the inside of my log walls, new construction, before i clean them??not sure exactly what kind of sander or grit to use..

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When I have to sand logs, I use orbital and square palm sanders with 80 grit paper. I use the square palm sander to get into the tight areas and corners, and the orbital for the rest (majority) of the logs. If your logs are round than you should be able to just "go to town" on them, if your logs have the peeled look than make it a point to keep your sander from rounding all of your edges. Make sure everything looks uniform or when you put on a stain or clear coat it will stick out like a sore thumb. If you are just spot sanding, you will notice how much the rest of logs have yellowed, you should then apply your bleaching agent to clean them up and get a uniform color. Remember to rinse, rinse, and rinse. Hope this helps.

Happy holidays,

LHD Finishing


As Jesse suggested buy a good quality 5 inch, "random orbital" sander and good quality sandpaper. I have a Dewalt. Almost all of these sanders come with a dust attachment. I remove the dust catcher and tape on a hose to my shop vacuum. This keeps the sanding dust to a minimum and keeps the sandpaper cleaner. I have borrowed extra hose from neighbors trash but you can also use pool cleaner hose which is very lightweight. I use blue masking tape to hold the hoses together. These sanders come in 8 hole and 5 hole for dust removal. A set of noise ear muffs works great at keeping the noise down from the sander and shop vacuum.


The palm sander is good but I found the newer triangler versions even better as they can go into tight corners where the palm sander can't easily get. You can also hook these up to the shop vacuum. I got the Craftsman version from Sears, it looks like a small laundry iron. Buy a lot of extra sandpaper in the 80 grit version as Jesse suggested.


After sanding go over the logs with a brush on the shop vacuum to get out anything left.



Thank you for replying. One question. my boyfriend has it in his hand, an orbital sander is going to go against the grain...why don't you use a straight back and forth motion sander>>??? Very inexperienced in sanders!! as you can tell! i am doing the sanding so i want to do it right!  thank you.



There really shouldn't a difference, should turn out the same. Your preference. Are you able to tell a difference in the final appearance between the different techniques?
I haven't started to sand yet. i am this weekend. going to go buy a dewalt sander! Very nervous to start. going to begin in the laundry room!  lol
We used a random orbital sander at a fairly low speed with 80 grit paper. We used a rubber eraser type bar to clean the paper often too. We had one wall that had received more sun during construction so it took a bit more sanding but in the end, all the walls matched. We didn't use any bleaching agents but know that others have done this, we found the sanding got us to the uniform look we wanted.

Thank you for your reply!



Try the Osborne Brush product from PermaChink.  Two different sizes 4" or 6", and 4" easier to work.  Two grits (80 and 120) and worth maybe both grits per average interior.  They work in a orbital type sander and reach into tight spaces and on varies finishes (hewn, planed, drawknife).  Worth the money.  Available thru several log tool outlets or from PermaChink direct at (865)524-7343. 



The Osborne Brush is effective......but it has its down sides. I personally don't care for them, sanders with 80 grit acheive the desired effect for a finish with the least amount of chance for improper use, especially for a person who does not have the experience with that specific tool.

I think the brush works on an angle grinder?

Just my opinion on the sanding, some persons feel differently about corn blasting, media blasting to be specific, than I do. I personally love the media blasted look on a log home, but only if its done correctly, while many are against it.

Happy holidays,

LHD Finishing
Yep, the Osborn brush is not really intended for sanding... more for polishing. Our crews use DeWalt orbital sanders as discussed and 80 grit paper. We've had the best results using PermaChink Prelude primer (clear with UV Protection) and then apply clear PermaChink finish over the primed surface. The primer helps the more expensive clear finish achieve higher square feet per gallon coverage while saving money.
do i have to sand with 80 grit and then again with 120? the log home builder we hired to do our roof said 2 sand twice once with 80 then with 120. thoughts. i need a definite answer i am really hesitant to start, but i have 2~


It really depends on how smooth you want the finish to be. You will also find that the first coat of sealer will raise the grain somewhat. If you are using a ureathane you could do a light sanding using 120 between coats but it is a lot of work. I would not try this with finishes like linseed oil.

Read the sealer instructions carefully as many allow you to put on several coats without sanding inbetween if done within a certain time between coats. 

The best thing to do is take a small area where the result is not so noticable  and try sanding once with the 80 and then with the 120 and see the results. You can wet the log with a little water to get an idea of how much grain raising will take place as this will vary quite a bit with age and log type.






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