Paint Rollers Going Flat

[Tryingit]

Hi all. I'm painting an entire house from mist coat. I bought arroworthy medium pile blue vein rollers to start off with but have also tried a different make, and I've been using a pole. After about 15 minutes the roller is going super flat and I can't seem to get the paint to spread out so I'm constantly back in the scuttle. This is happening on the mist coat and first proper coat. I used Armstead Contract Matt watered down for the mist coat and Albany AF1 paint for the proper coat. Today I've tried a short pile roller but it's not much better.

When I first started I could do a whole room no problems, then after half an hour I would run into problems, now after 15 minutes the problems start and it's taking an age just to paint one ceiling and I'm using so much paint. Very odd.

What am I doing wrong?!

 

[blup]

Get some spares and clean out/dry the old roller when it gets saturated, its quite normal.

 

[Tryingit]

Is it normal after only 15 minutes though? I'd need 3 rollers for one ceiling at this rate. Having the same problem again today, so frustrating.

 

[blup]

It depends on the paint and roller quality but 15 mins is a lot of paint and painting

 

[Tryingit]

Just coming back to update on this in case anyone is having the same issue. I basically figured out that even on the first coat after the mist coat the paint was absorbing into the plaster so fast so wasn't spreading. I think I'd watered the mist coat down too much. I added less water on other mist coats and it made a big difference, I also added a small amount of water to the first coat after mist coat.
I was then able to paint for hours with no problems with the roller