by majanasa »
Tue Aug 21, 2012 4:56 pm
Hi sdfuk,
I am based in Montreal, Canada. I recently purchased a house, and painted it completely before moving in. We have been experiencing the same gas/ammonia like smell described in this forum. This only happens when we open the windows on hot/humid summer day. We went nuts diagnosing this problem, from gas company, to air quality experts, plumbers, etc. Finally i found this forum.
Unfortunately I do not know if the problem existed before I bought the house, since we bought it and painted entirely in the winter before moving in. When spring arrived and we started opening the windows, this pungeant gas smell started appearing. We also found that some rooms it would get quite strong and would sting the eyes (including the eyes of my 3 year old)
I do not know if Crown paints exist in Canada (we have Crown Diamond, is this the same?). I also do not know what kind of paint are found in the various layers of previous paint jobs.
What I do know is that the walls smell occurs in all the rooms that I put a latex based primer over the old paint (insul-x aqua seal). One room I put an oil-based primer from zinsser (called cover stain) and I get no smell. All the rooms that have gyproc board vs. plaster also have no smell.
My guess is that something has happenned between the insul-x aqua seal latex primer and an old paint on the plastered walls of the house. And the symptoms are exactly what is described here.
I went to the local paint store and I was told to give B-I-N from Zinsser a try, as its a shellac based primer that is as stinky as an oil based alkyd-sealer while applying but the smell goes away after 30 minutes, unlike an oil-based primer which can linger for a very long time. Its also a very good sealer when it comes to odors.
Verdict:
I tried B-I-N for one of the rooms with the problem and then two coats of the same latex paint I had applied before (Moore style from Bengamin Moore) And the problem appears to be completley gone. Was B-I-N also a success for you? I am curious because I now wonder if i should do this for the rest of my house, or should i wait a bit and see if the gas-smell seaps through the BIN sealant with time?
thanks again to all on this forum. We were close to selling our recently purchased home, due to this mysterious problem.
majanasa