Hi,
Recently sprayed upstairs trim/doors etc in my house with Wagner W950 HVLP, using Leyland fast drying satin, straight onto previous white paint. It was thoroughly keyed and cleaned, but while it worked well and gave a great finish in the bedrooms, the paint on the doors and trim in the upstairs hall didn't adhere well and was peeling in places.
Reading up online, I suspect this was due to the previous paint, probably being oil based, and the water based satin not adhering to it, and not wanting to repeat this experience in the downstairs I am planning to spray a coat of Zinnser 123 on the trim first, to provide adhesion.
Having never used this before, my questions are:
1. Is one coat of Zinsser normally enough?
2. Do I need a separate undercoat before the top coat, or will the 123 serve this purpose?
Many thanks.
Recently sprayed upstairs trim/doors etc in my house with Wagner W950 HVLP, using Leyland fast drying satin, straight onto previous white paint. It was thoroughly keyed and cleaned, but while it worked well and gave a great finish in the bedrooms, the paint on the doors and trim in the upstairs hall didn't adhere well and was peeling in places.
Reading up online, I suspect this was due to the previous paint, probably being oil based, and the water based satin not adhering to it, and not wanting to repeat this experience in the downstairs I am planning to spray a coat of Zinnser 123 on the trim first, to provide adhesion.
Having never used this before, my questions are:
1. Is one coat of Zinsser normally enough?
2. Do I need a separate undercoat before the top coat, or will the 123 serve this purpose?
Many thanks.