if customer has already prepped

[doug boardley]

just wondering guys, if customer has tried to be helpful and prepped substrate with pva, what can we do to strip it?

 

[DHTiling]

Pva only forms a skin...so just sand it off.......

 

[doug boardley]

is it the same diluted/undiluted Dave?, just wondering about absorption if it's been diluted?

 

[Fekin]

I would have thought it would just form a thinner skin if it's been diluted.

 

[DHTiling]

If you water it down to the point that it soaks in..then no probs..just prime over it with acrylic primer......it won't have formed a skin , so cannot become live again and the primer will prevent ettringnite..

 

[Fekin]

and the primer will prevent ettringnite..

dunno what that is, but it sounds like it must itch like a sod :stunned:

 

[doug boardley]

If you water it down to the point that it soaks in..then no probs..just prime over it with acrylic primer......it won't have formed a skin , so cannot become live again and the primer will prevent ettringnite..

what's ettringite then dave? he he he!!:lol:

 

[doug boardley]

dunno what that is, but it sounds like it must itch like a sod :stunned:

shame on you Fekin!!:grouphug:

 

[Fekin]

what's ettringite then dave? he he he!!:lol:

Ettringite is a hexacalcium aluminate trisulfate hydrate, (CaO)6(Al2O3)(SO3)3 · 32 H2O.
Ettringite is found in hydrated Portland cement system as a result of the reaction of calcium aluminate with calcium sulfate, both present in Portland cement. [1] Ettringite the more prominent representative of AFt phases or (Al2O3-Fe2O3-tri)) can also be synthesized in the laboratory by reacting stoichiometric amounts of calcium, aluminium and sulfate in water. In the cement system, the presence of ettringite depends on the ratio of calcium sulfate to aluminate; when this ratio is low, ettringite forms during early hydration and then converts to the calcium aluminate monosulfate (AFm phase or (Al2O3-Fe2O3-mono)). When the ratio is intermediate, only a portion of the ettringite converts to AFm and both can coexist, while ettringite is unlikely to convert to AFm at high ratios.
The chemical formula used by cement scientists is C6AS3H32;
The characters designate standard notations: [2]
C = CaO,
S = SiO2,
A = Al2O3,
F = Fe2O3,
S = SO3,
H = H2O,
K = K2O,
N = Na2O,
m = mono,
t = tri.

Apparently :huh2:

 

[DHTiling]

what's ettringite then dave? he he he!!:lol:

Ettringite is a hexacalcium aluminate trisulfate hydrate, (CaO)6(Al2O3)(SO3)3 · 32 H2O.
Ettringite is found in hydrated Portland cement system as a result of the reaction of calcium aluminate with calcium sulfate, both present in Portland cement. [1] Ettringite the more prominent representative of AFt phases or (Al2O3-Fe2O3-tri)) can also be synthesized in the laboratory by reacting stoichiometric amounts of calcium, aluminium and sulfate in water. In the cement system, the presence of ettringite depends on the ratio of calcium sulfate to aluminate; when this ratio is low, ettringite forms during early hydration and then converts to the calcium aluminate monosulfate (AFm phase or (Al2O3-Fe2O3-mono)). When the ratio is intermediate, only a portion of the ettringite converts to AFm and both can coexist, while ettringite is unlikely to convert to AFm at high ratios.
The chemical formula used by cement scientists is C6AS3H32;
The characters designate standard notations: [2]
C = CaO,
S = SiO2,
A = Al2O3,
F = Fe2O3,
S = SO3,
H = H2O,
K = K2O,
N = Na2O,
m = mono,
t = tri.

 

[DHTiling]

 

[Fekin]

You Wikipedia cheat, :lol:

 

[DHTiling]

SSNAP!!!......:stupid:

 

[doug boardley]

so et's got an itchy ring? rite ?:joker:

 

[Fekin]

SSNAP!!!......:stupid:

Thing is, you probably typed that out from memory Dave :lol: