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#1
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Which teak seam calk?
Glenn,
I would stay away from any silicone product because, once you use it, you will never be able to use anything else. It maybe very good, but the financial risk if it fails is very high. A very useful tip is to use tape on the bottom of every seam. This will prevent the calk from being peeled of the sides when expansion and contraction occurs. That is the most common cause of calk failure. You know polysulfide works, why take the risk? When I did my deck I used 242 tubes and I had to load each one, a real PITA. Today, most of the polysulfide makers offer their product in sausages that load into pneumatic guns. This is the only way to go. These guns are expensive, but the time and product savings is amazing. The thin plastic wrapper prevents the polysulfide from air exposure until it exits the nozzle. As a point to note, moisture exposure causes the cure. Don't even think about doing this in anything but the driest conditions. Good luck! Steve "Glenn Ashmore" wrote in message newsC2Bb.90342$xV6.61520@lakeread04... Rutu' teak decking will have about 1,100 lineal feet of seams. Based on the manufacturers' coverage figures that will require 4 gallons or 60 cartriges of caulk. The candidates with estimated cost for Rutu's decks a Detco - 2 part polysulfide & primer + cartriges - $580 Boatlife - 2 part Polysulfide & primer + cartriges $540 Maritime Wood Products - one part oxime silicone - $510 Teak Decking Systems SIS 440 - one part silicone - $450 I am leaning strongly towards the silicones because there is no mixing or cartrige filling and you can stop at the end of a cartrige without wasting the rest of the gallon. Both silicones seem to be highly recommended with the TDS product getting the most mentions. Does anyone have experience with either? -- Glenn Ashmore I'm building a 45' cutter in strip/composite. Watch my progress (or lack there of) at: http://www.rutuonline.com Shameless Commercial Division: http://www.spade-anchor-us.com |
#2
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Which teak seam calk?
"Steve Lusardi" Today, most of the polysulfide makers offer their product in sausages that load into pneumatic guns. This is the only way to go. These guns are expensive, but the time and product savings is amazing. The thin plastic wrapper prevents the polysulfide from air exposure until it exits the nozzle. SFWIW, I have a manual gun that uses "sausages". Does a great job. Night and day difference between it and the typical DIY, 10.5 oz gun. HTH -- Lew S/A: Challenge, The Bullet Proof Boat, (Under Construction in the Southland) Visit: http://home.earthlink.net/~lewhodgett for Pictures |
#3
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Which teak seam calk?
Interesting comment about tape on the bottom of the joint. This is
something that is common to all sealing / jointing, but is overlooked by most people. Consider a joint with two sides and bottom. Something like a tongue and groove. Sealant can withstand say 30% extension before failure. If the joint has a non-stick "bottom" like tape or backing rod, then as the joint expands the sealant cross section lengthens - but it also gets "narrower" to maintain it's volume. If it's stuck to the bottom of the joint it can't shrink upwards, so the top surface must contract much more than the 30 %, and it tears and the joint fails.. Sorry if this is not a clear word picture. But the essence of it is that every time you fill a three sided joint right to the bottom ( which is the intuitive way to do it) you are building in failure!! People think backing rods in joints are to save sealant and not worth worrying about. They ( or non-stick tape) are critical to a successful joint. One of my pet hobby horse topics! David "Steve Lusardi" wrote in message ... Glenn, I would stay away from any silicone product because, once you use it, you will never be able to use anything else. It maybe very good, but the financial risk if it fails is very high. A very useful tip is to use tape on the bottom of every seam. This will prevent the calk from being peeled of the sides when expansion and contraction occurs. That is the most common cause of calk failure. You know polysulfide works, why take the risk? When I did my deck I used 242 tubes and I had to load each one, a real PITA. Today, most of the polysulfide makers offer their product in sausages that load into pneumatic guns. This is the only way to go. These guns are expensive, but the time and product savings is amazing. The thin plastic wrapper prevents the polysulfide from air exposure until it exits the nozzle. As a point to note, moisture exposure causes the cure. Don't even think about doing this in anything but the driest conditions. Good luck! Steve "Glenn Ashmore" wrote in message newsC2Bb.90342$xV6.61520@lakeread04... Rutu' teak decking will have about 1,100 lineal feet of seams. Based on the manufacturers' coverage figures that will require 4 gallons or 60 cartriges of caulk. The candidates with estimated cost for Rutu's decks a Detco - 2 part polysulfide & primer + cartriges - $580 Boatlife - 2 part Polysulfide & primer + cartriges $540 Maritime Wood Products - one part oxime silicone - $510 Teak Decking Systems SIS 440 - one part silicone - $450 I am leaning strongly towards the silicones because there is no mixing or cartrige filling and you can stop at the end of a cartrige without wasting the rest of the gallon. Both silicones seem to be highly recommended with the TDS product getting the most mentions. Does anyone have experience with either? -- Glenn Ashmore I'm building a 45' cutter in strip/composite. Watch my progress (or lack there of) at: http://www.rutuonline.com Shameless Commercial Division: http://www.spade-anchor-us.com |
#4
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Which teak seam calk?
Oh yea, Boatlife makes a bondbreaker cord that you should use in the bottom
of each seam. "Steve Lusardi" wrote in message ... Glenn, I would stay away from any silicone product because, once you use it, you will never be able to use anything else. It maybe very good, but the financial risk if it fails is very high. A very useful tip is to use tape on the bottom of every seam. This will prevent the calk from being peeled of the sides when expansion and contraction occurs. That is the most common cause of calk failure. You know polysulfide works, why take the risk? When I did my deck I used 242 tubes and I had to load each one, a real PITA. Today, most of the polysulfide makers offer their product in sausages that load into pneumatic guns. This is the only way to go. These guns are expensive, but the time and product savings is amazing. The thin plastic wrapper prevents the polysulfide from air exposure until it exits the nozzle. As a point to note, moisture exposure causes the cure. Don't even think about doing this in anything but the driest conditions. Good luck! Steve "Glenn Ashmore" wrote in message newsC2Bb.90342$xV6.61520@lakeread04... Rutu' teak decking will have about 1,100 lineal feet of seams. Based on the manufacturers' coverage figures that will require 4 gallons or 60 cartriges of caulk. The candidates with estimated cost for Rutu's decks a Detco - 2 part polysulfide & primer + cartriges - $580 Boatlife - 2 part Polysulfide & primer + cartriges $540 Maritime Wood Products - one part oxime silicone - $510 Teak Decking Systems SIS 440 - one part silicone - $450 I am leaning strongly towards the silicones because there is no mixing or cartrige filling and you can stop at the end of a cartrige without wasting the rest of the gallon. Both silicones seem to be highly recommended with the TDS product getting the most mentions. Does anyone have experience with either? -- Glenn Ashmore I'm building a 45' cutter in strip/composite. Watch my progress (or lack there of) at: http://www.rutuonline.com Shameless Commercial Division: http://www.spade-anchor-us.com |
#5
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Which teak seam calk?
I agree about the bond breaker but not about the silicone. The TDS
caulk was recommended to me by Brooklyn Boatyard and PJ. I have a small sample of the TDS decking and it is pretty amazing. The bond is so strong that TDS doesn't even use a backing on their prefabbed decking. It is held together by the caulk only. Steve Lusardi wrote: Glenn, I would stay away from any silicone product because, once you use it, you will never be able to use anything else. It maybe very good, but the financial risk if it fails is very high. A very useful tip is to use tape on the bottom of every seam. This will prevent the calk from being peeled of the sides when expansion and contraction occurs. That is the most common cause of calk failure. You know polysulfide works, why take the risk? When I did my deck I used 242 tubes and I had to load each one, a real PITA. Today, most of the polysulfide makers offer their product in sausages that load into pneumatic guns. This is the only way to go. These guns are expensive, but the time and product savings is amazing. The thin plastic wrapper prevents the polysulfide from air exposure until it exits the nozzle. As a point to note, moisture exposure causes the cure. Don't even think about doing this in anything but the driest conditions. Good luck! Steve "Glenn Ashmore" wrote in message newsC2Bb.90342$xV6.61520@lakeread04... Rutu' teak decking will have about 1,100 lineal feet of seams. Based on the manufacturers' coverage figures that will require 4 gallons or 60 cartriges of caulk. The candidates with estimated cost for Rutu's decks a Detco - 2 part polysulfide & primer + cartriges - $580 Boatlife - 2 part Polysulfide & primer + cartriges $540 Maritime Wood Products - one part oxime silicone - $510 Teak Decking Systems SIS 440 - one part silicone - $450 I am leaning strongly towards the silicones because there is no mixing or cartrige filling and you can stop at the end of a cartrige without wasting the rest of the gallon. Both silicones seem to be highly recommended with the TDS product getting the most mentions. Does anyone have experience with either? -- Glenn Ashmore I'm building a 45' cutter in strip/composite. Watch my progress (or lack there of) at: http://www.rutuonline.com Shameless Commercial Division: http://www.spade-anchor-us.com -- Glenn Ashmore I'm building a 45' cutter in strip/composite. Watch my progress (or lack there of) at: http://www.rutuonline.com Shameless Commercial Division: http://www.spade-anchor-us.com |
#6
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Which teak seam calk?
Glenn et all
TDS has been giving sampless of decking in boat shows, but last time I spoke with them they said their caulking is not a glue to hold teak strips together, and I believe they still sell all their prefabbed decking with backing either fiberglass or plywood. Maritime has harder caulking and they sell prefabbed panels w/o backing. Both caulkings are silicone based, either one specially formulated for teak decking but actually used in other industries and have probably over 20 year life in outside conditions. I have used both and to make life more interesting I will soon come up with my own "specially formulated for teak decking" product ;-) Juha Tuomela Jupiter FL "Glenn Ashmore" wrote in message news:PyjBb.90409$xV6.22139@lakeread04... I agree about the bond breaker but not about the silicone. The TDS caulk was recommended to me by Brooklyn Boatyard and PJ. I have a small sample of the TDS decking and it is pretty amazing. The bond is so strong that TDS doesn't even use a backing on their prefabbed decking. It is held together by the caulk only. |
#7
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Which teak seam calk?
For what it is worth:
I'l support: Awoid silicone and use tape. With all the efford you have put into the project, don't try to save a penny on this one. (I'm no expert but I am going to re-chauck my deck this winter, so the subject definitly has my interest) Peter "Steve Lusardi" skrev i en meddelelse ... Glenn, I would stay away from any silicone product because, once you use it, you will never be able to use anything else. It maybe very good, but the financial risk if it fails is very high. A very useful tip is to use tape on the bottom of every seam. This will prevent the calk from being peeled of the sides when expansion and contraction occurs. That is the most common cause of calk failure. You know polysulfide works, why take the risk? When I did my deck I used 242 tubes and I had to load each one, a real PITA. Today, most of the polysulfide makers offer their product in sausages that load into pneumatic guns. This is the only way to go. These guns are expensive, but the time and product savings is amazing. The thin plastic wrapper prevents the polysulfide from air exposure until it exits the nozzle. As a point to note, moisture exposure causes the cure. Don't even think about doing this in anything but the driest conditions. Good luck! Steve |
#8
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Which teak seam calk?
"Peter S/Y Anicula" wrote in message
k... For what it is worth: I'l support: Awoid silicone and use tape. Using tape is a must. But why the aversion against silicone? I mean, it's not the ordinary silicone houshold stuff we're talking about. This stuff is specially designed for decks. I remember an article in Woodenboat about this and they where very enthousiastic about it. Meindert |
#9
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Which teak seam calk?
I guess I have a general aversion against silicone on boats. This is based
on experience from 20 years ago with some marine silicone products, that I didn't like. I realise that I'm probably not up to date on this subject. I'll look further in to it. Until then, forget my advise against silicone for deck seams. Peter S/Y Anicula "Meindert Sprang" skrev i en meddelelse ... "Peter S/Y Anicula" wrote in message k... For what it is worth: I'l support: Awoid silicone and use tape. Using tape is a must. But why the aversion against silicone? I mean, it's not the ordinary silicone houshold stuff we're talking about. This stuff is specially designed for decks. I remember an article in Woodenboat about this and they where very enthousiastic about it. Meindert |
#10
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Which teak seam calk?
"Peter S/Y Anicula" writes:
I guess I have a general aversion against silicone on boats. This is based on experience from 20 years ago with some marine silicone products, that I didn't like. ....But then again, nobody has even 10 years of experience of the new silicones. Glenn, having seen your boat built from the start (virtually) I would hate to see you ruin the deck with some non-proved new wonder goo when a known and long-used 2-part polysulphide would be a safe alternative. Everything I know of wooden boats tells that silicone should be kept far from wood. If you start using silicone there is no way back. There has been enough bad examples of miraculous new products failing after a few years. Your boat is a pretty big testfield for expensive failures... Pekka -- http://www.puuvene.net/ |
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