2nd_apprentice
Well-Known Member
Need to seal some parts with polyurethane against rot. They recommend thinning it first with "PUR-Solvent". Any idea which specific product I should use?
Polyurethane Solvent
- Thread starter 2nd_apprentice
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2nd_apprentice
Well-Known Member
It's a single component polyurethane if that matters.
VicS
Well-Known Member
[ QUOTE ]
They recommend thinning it first with "PUR-Solvent
[/ QUOTE ] Who are "They"
Maybe "they" have a website with some info,. Product datasheets etc.
For single pack polyurethane coatings white spirit is often the appropriate thinner.
They recommend thinning it first with "PUR-Solvent
[/ QUOTE ] Who are "They"
Maybe "they" have a website with some info,. Product datasheets etc.
For single pack polyurethane coatings white spirit is often the appropriate thinner.
2nd_apprentice
Well-Known Member
"They" are Voss Chemie and I downloaded the datasheet from their website. It says: "use 200% PUR Thinner, then 100% PUR Thinner before applying" PUR-Thinner obviously standing for polyurethane solvent.
2nd_apprentice
Well-Known Member
So if white spirit is "often the appropriate thinner" should I just try that? Nobody else ever used PU resin?
Loginname
Well-Known Member
I'm not sure what the job is but I would usually use epoxy for waterproofing things.
VicS
Well-Known Member
I have not found a website so cannot say. I would not have hesitated to use it for brush cleaning etc but the product may be more sensitive to the composition of what is used as the thinner.
The best advice IMHO is to ask the supplier to also supply the thinner. If they can't or wont then chuck the original coating back at them and find an alternative for which the thinner is more readily available.
The best advice IMHO is to ask the supplier to also supply the thinner. If they can't or wont then chuck the original coating back at them and find an alternative for which the thinner is more readily available.
2nd_apprentice
Well-Known Member
[ QUOTE ]
I'm not sure what the job is but I would usually use epoxy for waterproofing things.
[/ QUOTE ]
That's exactly what I'm about to do: you use it as primer before applying epoxy.
website is this one with link to the data sheet:
yachtcare
only french or german though /forums/images/graemlins/grin.gif
I've sent a few mails out so should have the answer by tomorrow!
I'm not sure what the job is but I would usually use epoxy for waterproofing things.
[/ QUOTE ]
That's exactly what I'm about to do: you use it as primer before applying epoxy.
website is this one with link to the data sheet:
yachtcare
only french or german though /forums/images/graemlins/grin.gif
I've sent a few mails out so should have the answer by tomorrow!
Loginname
Well-Known Member
The link didn't work but, if it's only in French and German, it wouldn't have been much use for me anyhow!
Whenever I've used epoxy I've always applied it without a primer, though I have diluted it a little for the first coat when applied to wood.
Having said that, I don't know anything about this manufacturers products or the job you are doing.
Whenever I've used epoxy I've always applied it without a primer, though I have diluted it a little for the first coat when applied to wood.
Having said that, I don't know anything about this manufacturers products or the job you are doing.
Graham66
Well-Known Member
If it is a one pack product then white spirit MIGHT work if it is two pack then only use the correct thinner otherwise therec could be a reaction and the product wont cureIt is always advisable to use the recommended product or at least take advice from the manufacturer
2nd_apprentice
Well-Known Member
Found out that white spirit is not recommended.
Did a search for polyurethane thinners though and found one made by a company in Glasgow
Did a search for polyurethane thinners though and found one made by a company in Glasgow
VicS
Well-Known Member
[ QUOTE ]
found one made by a company in Glasgow
[/ QUOTE ] Be sure it is suitable for a single pack product!
International use the thinners No 3, the same stuff as for most of their antifoulings.
found one made by a company in Glasgow
[/ QUOTE ] Be sure it is suitable for a single pack product!
International use the thinners No 3, the same stuff as for most of their antifoulings.
BrendanS
Well-Known Member
I did a search on Duroplast polyurethanes (PUR) from vosschemie and found so many possible solvents I didn't post until now. There are so many, that it would be impossible to suggest a compatible thinner, without knowing the original solvent used in it's manufacture.
2nd_apprentice
Well-Known Member
Yes, you're probably right. I finally found out that Toplicht sells the correct one:
case solved!
case solved!
2nd_apprentice
Well-Known Member
Thanks to all of you!
Not knowing much about chemicals I've been a bit naive it seems.
/forums/images/graemlins/grin.gif
Not knowing much about chemicals I've been a bit naive it seems.
/forums/images/graemlins/grin.gif
BrendanS
Well-Known Member
When you receive it, would love to see an update of what it actually is, as I'm very intrigued now.
oldsaltoz
Well-Known Member
G'day Patric (2nd_apprentice),
I have been monitoring this thread to see what the outcome was. As many of you know I do waterproofing for a living, and use Polyurethane in some areas.
If I'm sealing Polyurethane over any timber sections I always seal the timber first with epoxy resin thinned 33% by adding Methylated spirits to mix, this ensures good penetration.
If I see any sign of rot, I treat that before I apply any resin; not treating the rot will mean I wasted time and money.
I use Sikaflex Sikafloor 400N, no thinning and clean up with Acetone.
Joints between timber and other materials are sealed with a very sticky (peel back) tape that is smoothed with Sikaflex sealant prior to painting. Flat horizontal area are coated using a roller that looks like a rod with washers just a few mm apart, this controls the depth or the material very well and avoids any air getting trapped under the coating.
Avagoodweekend......
I have been monitoring this thread to see what the outcome was. As many of you know I do waterproofing for a living, and use Polyurethane in some areas.
If I'm sealing Polyurethane over any timber sections I always seal the timber first with epoxy resin thinned 33% by adding Methylated spirits to mix, this ensures good penetration.
If I see any sign of rot, I treat that before I apply any resin; not treating the rot will mean I wasted time and money.
I use Sikaflex Sikafloor 400N, no thinning and clean up with Acetone.
Joints between timber and other materials are sealed with a very sticky (peel back) tape that is smoothed with Sikaflex sealant prior to painting. Flat horizontal area are coated using a roller that looks like a rod with washers just a few mm apart, this controls the depth or the material very well and avoids any air getting trapped under the coating.
Avagoodweekend......
