Information on PQ57
(a spray for your rotting roof?)
We received eight pages of information from ISK Biocides, Inc in Memphis, TN.
The product bulletin makes it seem quite benign, so please look at all of the information.
If you review the scanned images* of their fax, you will see:
- the product bulletin for Canada; Registration No. 15314
- the associated Material Safety Data Sheet (MSDS):
- the product label
- directions for use
- additional precautions and hazards
(* Sorry for the quality of scanned image, but it's better than nothing.)
Before May '98, the spray (PQ57) had never been tested in Alberta. It was supposed to be applied at high pressure, but we have learned that an ordinary garden-type hand sprayer is being employed. The advertised warranty is five years. The instructions from the manufacturer of PQ57 state: "all surfaces must be thoroughly saturated". We wonder how the spray can penetrate to those areas affected by the rot which are on the bottom of the shakes . . .
One must question why a homeowner would throw away good money after bad (we make a mistake chosing untreated pine shakes over cedar).
We note that the spray carries a "Health Hazard Level III":
it is corrosive; it causes irreversible eye damage; if it is inhaled (acute toxicity) it can cause severe irritation and damage to mucosal surfaces; can cause nasal and respiratory irritation, nausea, vomiting, headache, and weakness. It may cause severe irritation to the upper respiratory tract!Do you want to spray this around your neighbourhood??