Hello, I'm wondering: I would one replace a sips pannel ( osb rot, delamination) cause by a water leak inside or outside ( bad flashing)

Also, how long can a sips frame remained exposed to rain during assembly?

thanks

My guess - dry it out and then glue and screw another layer of OSB (or steel if you can't tolerate the additional thickness) over the old one.

Posted By Alexis on 20 Oct 2012 10:49 AM
Hello, I'm wondering: I would one replace a sips pannel ( osb rot, delamination) cause by a water leak inside or outside ( bad flashing)

Also, how long can a sips frame remained exposed to rain during assembly?

thanks

I would think you would have to cut it out and then install another SIP panel but this question would be better posed to the SIP company you got the SIP from.

SIPs, like dimensional lumber, can only tolerate very light element exposure while building. It must dry out prior to sealing it.

Are we talking roof or wall here?

The repair needs to be "site specific" , there is no generic fix. Consult an engineer familiar with SIPS to analyze the damage and proper repair

well, it was a general question... does any one have any picture of a repair done on a sips panel? since sips are manufactured under pressure, i guess that simply removing the osb facing and gluing a new one doesn't work since you don't have the pressure element... So one would need to cut the affected area, cut groove to insert spline in the other pannel and install a new sips?

Posted By Alexis on 21 Oct 2012 02:09 PM
well, it was a general question... does any one have any picture of a repair done on a sips panel? since sips are manufactured under pressure, i guess that simply removing the osb facing and gluing a new one doesn't work since you don't have the pressure element... So one would need to cut the affected area, cut groove to insert spline in the other pannel and install a new sips?

The answer is in your question, glue and pressure, you will need to improvise, the pressure does not need to be applied the same as it was in the factory, that is why it is important to know where and how big does the patch need to be, you may or may not need additional framing members,

The glue used in the SIP industry is almost always a moisture curing urethane adhesvie. It's a brown viscus liquid that looks like maple syrup. You can go to 'Home Depot' or 'Lowes' and find it in small quantities sold under the name 'Gorilla Glue'.

A SIP is a structural component of your roof and if a large section needs to be repaired in a structurally sensitive area, you will need a local engineer to help you. However, if it is a small area, you can use the glue mentioned above with an OSB patch.

Posted By SimonD on 28 Oct 2012 02:30 PM
The glue used in the SIP industry is almost always a moisture curing urethane adhesvie. It a brown viscus liquid that looks like maple syrup. You can go to 'Home Depot' or 'Lowes' and find it in small quantities sold under the name 'Gorilla Glue'.

A SIP is a structural component of your roof and if a large section needs to be repaired in a structurally sensitive area, you will need a local engineer to help you. However, if it is a small area, you can use the glue mentioned above with an OSB patch.

I didn't know that the SIP adhesive was similar to Gorilla Glue. I always thought it was some "secretive" glue sold by DOW, BASF or DuPont.

Lbear,

I worked for a SIP manufacturer for 9 years (Structall Building Systems). I won't say it's perfectly chemically identical, but it's the same. You see, moisture curring urethane is solvent free, so it won't melt the EPS foam and can develop 50 lbs per sq. inch bond strength.

The information isn't secret, you just have to know where to look.:-) http://www.icc-es.org/reports/pdf_files/ICC-ES/ESR-1023.pdf