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#1
Posted to alt.home.repair
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floor finishing
Ok, i got a dousing of BLO applied and wiped down on a new red oak
floor. Now i need to know what is the best way (that is not spraying) to apply the wax free shellac sealer. I'm gonna start on this Thursday, and I am looking for ideas. I'm thinking a 2" brush like i did my stair treads with is probably not the best solution. thanks! -- Steve Barker remove the "not" from my address to email |
#2
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Boiled linseed oil is a drying oil. It's a relatively soft coating that's just not going to stand up well on a working surface like a floor. Then, you're talking about rolling a shellac sealer onto that drying oil. Shellac is a natural material excreted from a particular kind of bug, and it's not nearly hard enough to stand up well on a floor. In order for any coating to stand up well on a floor, it has to dry to a HARD film that will stick to the floor well. The harder the coating, the less dirt will get embedded in that coating underfoot (making the floor look dirty in the traffic lanes) and the less it'll be scratched up by people walking on it with shoes on (cuz grit gets embedded in the leather soles of footwear). So, the harder the coating you put over your hardwood floor, the longer it'll look new, and the slower it'll lose that "new" appearance. What you need to do is go back in time and stain that red oak floor with an "oil based" or water based stain, (or leave it natural), and then go over that floor with a finish that dries to a HARD film that will stand up to foot traffic. That would be a conventional "oil based" polyurethane hardwood floor finish if you want to stay with tried and true technology from the 1950's, or if you want to go with one of the new isocyanurate based polyurethanes that'll give you a coating about three times as hard, "Traffic" by Bona or "Street Shoe" by Basic Coatings. Both Traffic and Street Shoe consist of a gallon of water based isocyanate prepolymer. When you add the small bottle of catalyst to the gallon jug and shake, the polymer forms as the water evaporates. Both Traffic and Street Shoe are different from "oil based" polyurethane hardwood floor finishes in that the "oil based" stuff is essentially an alkyd resin with urethane groups inside it that act very much like the roll cage inside a race car. Those urethane groups link various parts of the alkyd resin together to make the resin harder (if you could squeeze it) and stiffer (if you could stretch it). Neither Traffic no Street Shoe contain any alkyd resins. Instead, what you get is a water based slurry of prepolymer. The prepolymer consists of isocyanates already reacted with alcohols to make tiny plastic "blobs", and those blobs are suspended in water. When the catalyst is mixed into the jug, the jug shaken and the mixture spread on the floor, then as the water evaporates from the mixture, the catalyst concentration rises sufficiently to cause each of those "blobs" to cross link with all of their neighbors. So, the result is that the plastic that forms over you floor has very many more urethane groups in, making for a much harder film than you can ever get in any "oil based" polyurethane hardwood floor finish. But, if I understand you correctly, you already have a coating of linseed oil on top of your oak, and it's never a good idea to put a harder coating over a softer one. That's because if the floor receives an impact, it'll have a tendency to "chip" as the soft linseed oil layer breaks, but the harder and stronger polyurethane above doesn't. You might want to have a discussion with whomever told you to use boiled linseed oil on a hardwood floor, and to use shellac as a (presumably) "wear layer". Maybe see what his or her reasoning, if any, was. Also, see if any of the hardwood floor finishing companies in your area have ever applied Traffic or Street Shoe over linseed oil, and what they're experience was with that installation. Last edited by nestork : September 11th 12 at 07:30 AM |
#3
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floor finishing
On 9/11/2012 12:58 AM, nestork wrote:
'Steve Barker[_6_ Wrote: ;2925023']Ok, i got a dousing of BLO applied and wiped down on a new red oak floor. Now i need to know what is the best way (that is not spraying) to apply the wax free shellac sealer. I'm gonna start on this Thursday, and I am looking for ideas. I'm thinking a 2" brush like i did my stair treads with is probably not the best solution. thanks! -- Steve Barker remove the "not" from my address to email No, and no. Boiled linseed oil is a drying oil. It's a relatively soft coating that's just not going to stand up well on a working surface like a floor. Then, you're talking about rolling a shellac sealer onto that drying oil. Shellac is a natural material excreted from a particular kind of bug, and it's not nearly hard enough to stand up well on a floor. In order for any coating to stand up well on a floor, it has to dry to a HARD film that will stick to the floor well. The harder the coating, the less dirt will get embedded in that coating underfoot (making the floor look dirty in the traffic lanes) and the less it'll be scratched up by people walking on it with shoes on (cuz grit gets embedded in the leather soles of footwear). So, the harder the coating you put over your hardwood floor, the longer it'll look new, and the slower it'll lose that "new" appearance. What you need to do is go back in time and stain that red oak floor with an "oil based" or water based stain, (or leave it natural), and then go over that floor with a finish that dries to a HARD film that will stand up to foot traffic. That would be a conventional "oil based" polyurethane hardwood floor finish if you want to stay with tried and true technology from the 1950's, or if you want to go with one of the new isocyanurate based polyurethanes that'll give you a coating about three times as hard, "Traffic" by Bona or "Street Shoe" by Basic Coatings. [image: http://www.glennyssupply.com/zc/imag...c%20satin.jpg] [image: http://www.basiccoatings.com/Product...x300_main.jpg] Both Traffic and Street Shoe consist of a gallon of water based isocyanate prepolymer. When you add the small bottle of catalyst to the gallon jug and shake, the polymer forms as the water evaporates. Both Traffic and Street Shoe are different from "oil based" polyurethane hardwood floor finishes in that the "oil based" stuff is essentially an alkyd resin with urethane groups inside it that act very much like the roll cage inside a race car. Those urethane groups link various parts of the alkyd resin together to make the resin harder (if you could squeeze it) and stiffer (if you could stretch it). Neither Traffic no Street Shoe contain any alkyd resins. Instead, what you get is a water based slurry of prepolymer. The prepolymer consists of isocyanates already reacted with alcohols to make tiny plastic "blobs", and those blobs are suspended in water. When the catalyst is mixed into the jug, the jug shaken and the mixture spread on the floor, then as the water evaporates from the mixture, the catalyst concentration rises sufficiently to cause each of those "blobs" to cross link with all of their neighbors. So, the result is that the plastic that forms over you floor has very many more urethane groups in, making for a much harder film than you can ever get in any "oil based" polyurethane hardwood floor finish. But, if I understand you correctly, you already have a coating of linseed oil on top of your oak, and it's never a good idea to put a harder coating over a softer one. That's because if the floor receives an impact, it'll have a tendency to "chip" as the soft linseed oil layer breaks, but the harder and stronger polyurethane above doesn't. You might want to have a discussion with whomever told you to use boiled linseed oil on a hardwood floor, and to use shellac as a (presumably) "wear layer". Maybe see what his or her reasoning, if any, was. Also, see if any of the hardwood floor finishing companies in your area have ever applied Traffic or Street Shoe over linseed oil, and what they're experience was with that installation. you completely missed the question. but thanks for the novel i didn't read. The BLO is already on and I WILL be using the shellac. -- Steve Barker remove the "not" from my address to email |
#4
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floor finishing
"Steve Barker" wrote in message
... Ok, i got a dousing of BLO applied and wiped down on a new red oak floor. Now i need to know what is the best way (that is not spraying) to apply the wax free shellac sealer. I'm gonna start on this Thursday, and I am looking for ideas. I'm thinking a 2" brush like i did my stair treads with is probably not the best solution. thanks! -- Steve Barker remove the "not" from my address to email I will assume that you put on just enough BLO to enhance the wood's appearance and not so much as to try and form a significant coating. The finish schedule you are using is traditional for both floors and furniture although shellac does not stand up to foot traffic as well as more modern finishes. That being said, I would thin the first coat of shellac maybe 50% with anhydrous alcohol and then use a lamb's wool applicator. These applicators fit on the end of a broom handle. Try to keep a wet edge but keep in mind that shellac dries more quickly than oil based finishes since the alcohol evaporates more quickly. You may want to do the floor in sections since later coats will melt into previous ones. You can buy retarders if needed. Good Luck. |
#5
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floor finishing
On 9/11/2012 9:24 AM, Baron wrote:
"Steve Barker" wrote in message ... Ok, i got a dousing of BLO applied and wiped down on a new red oak floor. Now i need to know what is the best way (that is not spraying) to apply the wax free shellac sealer. I'm gonna start on this Thursday, and I am looking for ideas. I'm thinking a 2" brush like i did my stair treads with is probably not the best solution. thanks! -- Steve Barker remove the "not" from my address to email I will assume that you put on just enough BLO to enhance the wood's appearance and not so much as to try and form a significant coating. The finish schedule you are using is traditional for both floors and furniture although shellac does not stand up to foot traffic as well as more modern finishes. That being said, I would thin the first coat of shellac maybe 50% with anhydrous alcohol and then use a lamb's wool applicator. These applicators fit on the end of a broom handle. Try to keep a wet edge but keep in mind that shellac dries more quickly than oil based finishes since the alcohol evaporates more quickly. You may want to do the floor in sections since later coats will melt into previous ones. You can buy retarders if needed. Good Luck. Why shellac on a floor!!?? It is soft and absorbs moisture. Great for sealing, but seems a thinned varnish would do as well. |
#6
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floor finishing
"Norminn" wrote in message
m... On 9/11/2012 9:24 AM, Baron wrote: "Steve Barker" wrote in message ... Ok, i got a dousing of BLO applied and wiped down on a new red oak floor. Now i need to know what is the best way (that is not spraying) to apply the wax free shellac sealer. I'm gonna start on this Thursday, and I am looking for ideas. I'm thinking a 2" brush like i did my stair treads with is probably not the best solution. thanks! -- Steve Barker remove the "not" from my address to email I will assume that you put on just enough BLO to enhance the wood's appearance and not so much as to try and form a significant coating. The finish schedule you are using is traditional for both floors and furniture although shellac does not stand up to foot traffic as well as more modern finishes. That being said, I would thin the first coat of shellac maybe 50% with anhydrous alcohol and then use a lamb's wool applicator. These applicators fit on the end of a broom handle. Try to keep a wet edge but keep in mind that shellac dries more quickly than oil based finishes since the alcohol evaporates more quickly. You may want to do the floor in sections since later coats will melt into previous ones. You can buy retarders if needed. Good Luck. Why shellac on a floor!!?? It is soft and absorbs moisture. Great for sealing, but seems a thinned varnish would do as well. Shellac is not a soft finish and it does not absorb moisture. One of the down sides to shellac is its brittleness. In fact, kayaks are traditionally finished with dewaxed shellac. Shellac is a traditional finish for floors and furniture. That is not to say that something more modern like varnish or polyurethane would hold up better but I think you would be surprised by how long a shellac finish will last. |
#7
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floor finishing
"Baron" wrote:
"Norminn" wrote in message m... On 9/11/2012 9:24 AM, Baron wrote: "Steve Barker" wrote in message ... Ok, i got a dousing of BLO applied and wiped down on a new red oak floor. Now i need to know what is the best way (that is not spraying) to apply the wax free shellac sealer. I'm gonna start on this Thursday, and I am looking for ideas. I'm thinking a 2" brush like i did my stair treads with is probably not the best solution. thanks! -- Steve Barker remove the "not" from my address to email I will assume that you put on just enough BLO to enhance the wood's appearance and not so much as to try and form a significant coating. The finish schedule you are using is traditional for both floors and furniture although shellac does not stand up to foot traffic as well as more modern finishes. That being said, I would thin the first coat of shellac maybe 50% with anhydrous alcohol and then use a lamb's wool applicator. These applicators fit on the end of a broom handle. Try to keep a wet edge but keep in mind that shellac dries more quickly than oil based finishes since the alcohol evaporates more quickly. You may want to do the floor in sections since later coats will melt into previous ones. You can buy retarders if needed. Good Luck. Why shellac on a floor!!?? It is soft and absorbs moisture. Great for sealing, but seems a thinned varnish would do as well. Shellac is not a soft finish and it does not absorb moisture. One of the down sides to shellac is its brittleness. In fact, kayaks are traditionally finished with dewaxed shellac. Shellac is a traditional finish for floors and furniture. That is not to say that something more modern like varnish or polyurethane would hold up better but I think you would be surprised by how long a shellac finish will last. I felt it get sticky with moisture. Not too many things that moisture does not effect o some degree. Lacquer also is sensitive to moisture. Greg |
#8
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floor finishing
On 9/12/2012 7:37 PM, gregz wrote:
"Baron" wrote: "Norminn" wrote in message m... On 9/11/2012 9:24 AM, Baron wrote: "Steve Barker" wrote in message ... Ok, i got a dousing of BLO applied and wiped down on a new red oak floor. Now i need to know what is the best way (that is not spraying) to apply the wax free shellac sealer. I'm gonna start on this Thursday, and I am looking for ideas. I'm thinking a 2" brush like i did my stair treads with is probably not the best solution. thanks! -- Steve Barker remove the "not" from my address to email I will assume that you put on just enough BLO to enhance the wood's appearance and not so much as to try and form a significant coating. The finish schedule you are using is traditional for both floors and furniture although shellac does not stand up to foot traffic as well as more modern finishes. That being said, I would thin the first coat of shellac maybe 50% with anhydrous alcohol and then use a lamb's wool applicator. These applicators fit on the end of a broom handle. Try to keep a wet edge but keep in mind that shellac dries more quickly than oil based finishes since the alcohol evaporates more quickly. You may want to do the floor in sections since later coats will melt into previous ones. You can buy retarders if needed. Good Luck. Why shellac on a floor!!?? It is soft and absorbs moisture. Great for sealing, but seems a thinned varnish would do as well. Shellac is not a soft finish and it does not absorb moisture. One of the down sides to shellac is its brittleness. In fact, kayaks are traditionally finished with dewaxed shellac. Shellac is a traditional finish for floors and furniture. That is not to say that something more modern like varnish or polyurethane would hold up better but I think you would be surprised by how long a shellac finish will last. I felt it get sticky with moisture. Not too many things that moisture does not effect o some degree. Lacquer also is sensitive to moisture. Greg Shellac gets white, cloudy stains from wet glasses. Still surprised to hear it is used as final finish on floors. I used shellac to refinish a piano....discovered the method used for a deep glassy finish was multiple coats of shellac and then final coats of varnish for moisture protection. Would be tough to use on a floor unless the place is wide open for ventillation. |
#9
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floor finishing
On 9/11/2012 8:24 AM, Baron wrote:
"Steve Barker" wrote in message ... Ok, i got a dousing of BLO applied and wiped down on a new red oak floor. Now i need to know what is the best way (that is not spraying) to apply the wax free shellac sealer. I'm gonna start on this Thursday, and I am looking for ideas. I'm thinking a 2" brush like i did my stair treads with is probably not the best solution. thanks! -- Steve Barker remove the "not" from my address to email I will assume that you put on just enough BLO to enhance the wood's appearance and not so much as to try and form a significant coating. The finish schedule you are using is traditional for both floors and furniture although shellac does not stand up to foot traffic as well as more modern finishes. That being said, I would thin the first coat of shellac maybe 50% with anhydrous alcohol and then use a lamb's wool applicator. These applicators fit on the end of a broom handle. Try to keep a wet edge but keep in mind that shellac dries more quickly than oil based finishes since the alcohol evaporates more quickly. You may want to do the floor in sections since later coats will melt into previous ones. You can buy retarders if needed. Good Luck. thanks for the reply! -- Steve Barker remove the "not" from my address to email |
#10
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floor finishing
On Monday, September 10, 2012 7:50:39 PM UTC-4, Steve Barker wrote:
Ok, i got a dousing of BLO applied and wiped down on a new red oak floor. Now i need to know what is the best way (that is not spraying) to apply the wax free shellac sealer. I'm gonna start on this Thursday, and I am looking for ideas. I'm thinking a 2" brush like i did my stair treads with is probably not the best solution. thanks! -- Steve Barker remove the "not" from my address to email Start by abandoning the idea of using shellac and get some polyurethane. The traditional route is the oil based one but many have had good results with the newer water based formulas. Which make clean up a lot easier and also do not yellow with age. |
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