Please help. Isn't primer supposed to adhere to spackle? It may sound like a stupid question, but I repaired some nail pops in a bedroom, spackled (thin layer), sanded very smooth, primed, waited and primed again. However, after letting the 2nd coat primer dry, if I pinch the patched surface, I'm able to peel the primer off (only the area where there is spackle) the primer adheres to the surrounding surface. I'm using Kilx Premium primer and the spackle container states that it is paintable. This is a fairly new house, the previous coat was a builders grade paint (MAB freshkote) Please help because I've repeated this step 2 times with the same results.

Several years ago I constructed a 14' wooden ladder using 2 x 4s. I kept it propped/leaned against the edge of the roof outside and used a sandbag to keep it from touching the shingles. I used it to go upon my roof as needed (sweep off debris, check the shingles and flashing, etc.) It worked great. But after about three years of exposure to the weather the wood began to decay even though I painted it with regular matching house paint. I'm thinking about building another one if I can protect it from the elements. Questions: What kind of 2 x 4s should I buy? Are some 2 x 4s of better quality and will stand more exposure to weather than others? (I'm thinking that maybe I used the wrong kind of lumber to make the first ladder?) Instead of painting it, would it be better to brush on a moisture seal such as Thompson's water seal? If I do use a water seal, can I still paint the ladder with an exterior latex? Or do you have to use an oil-based paint to paint over wood which has been treated with water seal? I think I remember seeing a water-based water seal. Is it as good as the regular or original water seal? I thought about using pressure treated 2 x 4s, but I know they have a tendency to warp and bend when exposed to the weather. Thanks in advance for any suggestions, information and advice.