I used 4oz of xim extender per gallon when painting an interior stairwell to extend drying time,... so I thought. What happened was that the paint went on extremely thin (brown over yellow) and seemed like the dry time shortened. I understand that painting dark colors over light is difficult to cover, but this was ridiculously thin. I was using SW Duration which I've had a lot of good experiences with until now. To mix in the extender I used my drill with paint mixer for about 3-5 min. I applied the paint with brush and roller, one man crew. This was the first time I used an extender....not real impressed.
Never had a problem with XIM Extender myself, as a matter of fact I prefer it over most of the others. I think the problem has to do with using it with the Duration as the Duration is a formula unto itself and may have reacted differently. I've always found it to be a little on the thin side by itself....probably would have used only 2 oz/gal.
I know that the product consistencies will change slightly when using ultra deep/clear bases. Cant say that im really familiar with the Duration interior, I know the exterior is pretty thick.
I am with wolf and recommend using 2 oz. or less. XIM is good stuff so dont be discouraged from using it again if the need arises, just dont make the same mistake.
Everyone has their own opinions about extenders; we have never been really successful with them. Using just a little extend does not have the desired effect; using enough to "extend" changes the characteristics of the paint; mostly in a negative way like changing color or thinning material causing runs.
I don't like to use anything in my paint if I don't have too but somtime u have to just start by goin with less then recomended because I believe it effects different paints differntly
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