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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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knotting solution
Hi,
About three years ago I put up some architrave that I know I painted with knotting solution yet the knots are starting to show through the paint. What could have gone wrong? I always coat any knot by brushing on one coat of knotting solution. Should I apply more than one coat or should I apply it more thickly? I see Ronseal now make an all-in-one primer, undercoat, and knot blocker. Has anyone used it? Reading the tin you need two coats, so I suppose there is little advantage over using one coat of primer and one coat of undercoat but if the knot-blocking part works, it could be useful. Has anyone used this? TIA |
#2
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knotting solution
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#3
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knotting solution
On Mon, 23 Apr 2012 08:56:03 +0100, Fred
wrote: Hi, About three years ago I put up some architrave that I know I painted with knotting solution yet the knots are starting to show through the paint. What could have gone wrong? I always coat any knot by brushing on one coat of knotting solution. Should I apply more than one coat or should I apply it more thickly? ISTR knotting is two coats but whether that's just for extra consumption & repurchase? whose was it? cheapo or kwolity? clear nail varnish also works well. Jim K |
#4
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knotting solution
On Mon, 23 Apr 2012 08:56:03 +0100, Fred wrote:
About three years ago I put up some architrave that I know I painted with knotting solution yet the knots are starting to show through the paint. "Show through" as in blister and ooze resin or just slight discolouration in a pale paint? -- Cheers Dave. |
#5
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knotting solution
clear nail varnish also works well. Does it? Logically it should, the varnish being insoluble in turpentine type solvents. Much more convenient to use too with that little brush and all. |
#6
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knotting solution
On Apr 23, 8:56*am, Fred wrote:
Hi, About three years ago I put up some architrave that I know I painted with knotting solution yet the knots are starting to show through the paint. What could have gone wrong? I always coat any knot by brushing on one coat of knotting solution. Should I apply more than one coat or should I apply it more thickly? I see Ronseal now make an all-in-one primer, undercoat, and knot blocker. Has anyone used it? Reading the tin you need two coats, so I suppose there is little advantage over using one coat of primer and one coat of undercoat but if the knot-blocking part works, it could be useful. Has anyone used this? TIA The alternative treatment is to heat the knot with a blowlamp. Burns/ evaporates the resin out. |
#7
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knotting solution
"Fred" wrote in message ... Hi, About three years ago I put up some architrave that I know I painted with knotting solution yet the knots are starting to show through the paint. What could have gone wrong? I always coat any knot by brushing on one coat of knotting solution. Should I apply more than one coat or should I apply it more thickly? I see Ronseal now make an all-in-one primer, undercoat, and knot blocker. Has anyone used it? Reading the tin you need two coats, so I suppose there is little advantage over using one coat of primer and one coat of undercoat but if the knot-blocking part works, it could be useful. Has anyone used this? TIA A good coat of shellac perhaps. That's all (decent) knotting solution is. |
#8
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knotting solution
On Mon, 23 Apr 2012 09:25:30 +0100, "Jim K"
wrote: ISTR knotting is two coats but whether that's just for extra consumption & repurchase? whose was it It was from Toolstation and was branded as a Toolstation own brand. I notice that they currently show a branded product on there web site: http://www.toolstation.com/shop/Knot...n+500ml/p28317 So perhaps they have changed suppliers since I bought mine; it was a few years ago. |
#9
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knotting solution
On Mon, 23 Apr 2012 09:38:36 +0100 (BST), "Dave Liquorice"
wrote: "Show through" as in blister and ooze resin or just slight discolouration in a pale paint? No blisters or oozing, just a brown discolouration on white paint. |
#10
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knotting solution
On Mon, 23 Apr 2012 18:15:45 +0100, "Nick"
wrote: A good coat of shellac perhaps. That's all (decent) knotting solution is. What colour is shellac? Is it what gives knotting solution it's brown colour? I found I had a tin of the ronseal in the garage. I must have bought it to try and forgotten about it. It is water based a white, which is why I wonder whether it is something other than shellac. The blurb on the tin talks about advanced polymers etc. but that could just be the marketing department talking. I have tried some on the skirting board and architrave; I'll let you know if it works but you will have to wait three years |
#11
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knotting solution
Fred wrote:
On Mon, 23 Apr 2012 18:15:45 +0100, "Nick" wrote: A good coat of shellac perhaps. That's all (decent) knotting solution is. What colour is shellac? Is it what gives knotting solution it's brown colour? yes. Think French polish. (shellac + methylated spirits) I found I had a tin of the ronseal in the garage. I must have bought it to try and forgotten about it. It is water based a white, which is why I wonder whether it is something other than shellac. The blurb on the tin talks about advanced polymers etc. but that could just be the marketing department talking. I have tried some on the skirting board and architrave; I'll let you know if it works but you will have to wait three years -- To people who know nothing, anything is possible. To people who know too much, it is a sad fact that they know how little is really possible - and how hard it is to achieve it. |
#12
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knotting solution
On 30/04/2012 14:31, The Natural Philosopher wrote:
Fred wrote: On Mon, 23 Apr 2012 18:15:45 +0100, "Nick" wrote: A good coat of shellac perhaps. That's all (decent) knotting solution is. What colour is shellac? Is it what gives knotting solution it's brown colour? yes. Think French polish. (shellac + methylated spirits) I found I had a tin of the ronseal in the garage. I must have bought it to try and forgotten about it. It is water based a white, which is why I wonder whether it is something other than shellac. The blurb on the tin talks about advanced polymers etc. but that could just be the marketing department talking. I have tried some on the skirting board and architrave; I'll let you know if it works but you will have to wait three years Shellac bleaches well, hence the pale polishes and sanding sealers. It also comes in various shades, garnet being the darkest, almost purple colour. Nothing water based is going to seal knots BTW |
#13
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knotting solution
On Tue, 01 May 2012 08:38:36 +0100, stuart noble
wrote: Nothing water based is going to seal knots I'm wondering about not bothering with knotting solution in the future and using aluminium primer for everything instead! |
#14
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knotting solution
On 03/05/2012 09:29, Fred wrote:
On Tue, 01 May 2012 08:38:36 +0100, stuart noble wrote: Nothing water based is going to seal knots I'm wondering about not bothering with knotting solution in the future and using aluminium primer for everything instead! I don't know how resistant that is to the resin that bleeds out of knots |
#15
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knotting solution
On Thu, 03 May 2012 20:36:12 +0100, stuart noble
wrote: I don't know how resistant that is to the resin that bleeds out of knots Oh, perhaps I've got that wrong then, I thought it was supposed to stop knots. I thought it had the advantage of being a knotting solution and primer all in one coat, and it's solvent based too. IIRC water based primers can raise the grain. TIA |
#16
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knotting solution
On 04/05/2012 10:37, Fred wrote:
On Thu, 03 May 2012 20:36:12 +0100, stuart noble wrote: I don't know how resistant that is to the resin that bleeds out of knots Oh, perhaps I've got that wrong then, I thought it was supposed to stop knots. I thought it had the advantage of being a knotting solution and primer all in one coat, and it's solvent based too. IIRC water based primers can raise the grain. TIA You may be right. When I said I didn't know.....:-) |
#17
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knotting solution
On 30/04/2012 09:48, Fred wrote:
On Mon, 23 Apr 2012 18:15:45 +0100, "Nick" wrote: A good coat of shellac perhaps. That's all (decent) knotting solution is. What colour is shellac? Is it what gives knotting solution it's brown colour? I found I had a tin of the ronseal in the garage. I must have bought it to try and forgotten about it. It is water based a white, which is why I wonder whether it is something other than shellac. The blurb on the tin talks about advanced polymers etc. but that could just be the marketing department talking. I have tried some on the skirting board and architrave; I'll let you know if it works but you will have to wait three years any time I have used knotting solution it has been a dark brown colour .... what you are doling is putting shellac over a knot to stop the know bleeding. |
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