Glue for polyiso?

[Steve Upstill (Swifty)]

Due to overenthusiastic velcro, some of the foil on my polyiso panels has come loose. Rather than trash the panels, I'd prefer to patch them. Can anyone suggest a good glue to attach foil, mylar, metal, velcro strips and/or fabric (any or all of the above) to polyiso foam? I'm keen (and have time) to experiment, but it would be nice to start with suggestions.

Thanks,

Steve Upstill

[Hunter]

http://www.thistothat.com/ is a simple website for determining what type of glue is best for different applications. I don't have any firsthand experience fixing these panels though so I can't offer reliable advice.

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[Steve Upstill]

Tried thistothat before posting. They have styrofoam but not polyiso.

On Sat, Jun 17, 2017, 2:40 PM Hunter <never...@gmail.com> wrote:

http://www.thistothat.com/ is a simple website for determining what type of glue is best for different applications. I don't have any firsthand experience fixing these panels though so I can't offer reliable advice.

On Sat, Jun 17, 2017 at 2:31 PM, Steve Upstill (Swifty) <ups...@gmail.com> wrote:

Due to overenthusiastic velcro, some of the foil on my polyiso panels has come loose. Rather than trash the panels, I'd prefer to patch them. Can anyone suggest a good glue to attach foil, mylar, metal, velcro strips and/or fabric (any or all of the above) to polyiso foam? I'm keen (and have time) to experiment, but it would be nice to start with suggestions.

Thanks,

Steve Upstill

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[Hunter]

Yea, I figured. From another random website if no one else responds:

Roofers use a two part urethane adhesive to glue poly iso to everything from steel decks to drywall to asphalt boards to poly coated vapour barriers. Brand names include Duotack, Fast 100 and Millemium. The problem is that these products come in a 1.5 liter double tube package that mixes the product as it is applied. This is great for jobs where a set of tubes will be used at one time but no good if you are stopping and starting. I like PL Premium (one part urathane) adhesive for small jobs.

On Sat, Jun 17, 2017 at 4:29 PM, Steve Upstill <ups...@gmail.com> wrote:

Tried thistothat before posting. They have styrofoam but not polyiso.

On Sat, Jun 17, 2017, 2:40 PM Hunter <never...@gmail.com> wrote:

http://www.thistothat.com/ is a simple website for determining what type of glue is best for different applications. I don't have any firsthand experience fixing these panels though so I can't offer reliable advice.

On Sat, Jun 17, 2017 at 2:31 PM, Steve Upstill (Swifty) <ups...@gmail.com> wrote:

Due to overenthusiastic velcro, some of the foil on my polyiso panels has come loose. Rather than trash the panels, I'd prefer to patch them. Can anyone suggest a good glue to attach foil, mylar, metal, velcro strips and/or fabric (any or all of the above) to polyiso foam? I'm keen (and have time) to experiment, but it would be nice to start with suggestions.

Thanks,

Steve Upstill

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[CodyFirestone.GMAIL]

PERHAPS USE ALUMINUM "DUCT TAPE" IT PRETTY MUCH STICKS TO EVERYTHING....

https://www.google.com/search?num=100&safe=off&rlz=1C1MSIM_enUS666US666&biw=1920&bih=988&tbm=shop&q=HOME+DEPOT+ALUMINUM+TAPE&oq=HOME+DEPOT+ALUMINUM+TAPE&gs_l=serp.3...20105.25677.0.25799.24.24.0.0.0.0.108.1881.21j2.23.0....0...1.1.64.serp..1.20.1656...0.85HyFDCd-L0#spd=6918679108383674143

[CodyFirestone.GMAIL]

oh, AND IT COMES IN VARIOUS WEIGHTS AND WIDTHS, UP TO EVEDN FOUR INCHES.  cHECK AROUND, wE HAVE USED IT TO FIX HOLES IN METAL, PRAY PAIN AND "LOOKS LIKE NEW"

[Hunter]

We used it our first year. While resilient to tearing (and looks good on metal) it's also the thing that has caused all our campmates to bleed. I would recommend not using it for anything that isn't a simple 2D fix it (it doesn't do bends well).

[ken winston caine]

Was on a construction site looking for information on the best glues to use to attach polyiso to polyiso and to attach polyiso to wooden studs and furring strips. And came across information that explained to me why I had encountered so many problems in the past trying to glue Mylar surfaces.

The explanation is simple: Mylar is impermeable and so nearly all glues that we generally think of trying dry far too slowly on it. I didn't find a specific glue recommendation for gluing Mylar to Mylar or Mylar to any other surface other than that the glue needs to be extremely fast drying and is unlikely to be something we will find in a tube or cartridge. Maybe that will help someone in their quest.

I am attempting this summer and fall to create a permanently installed, livable tiny-home modified hexayurt from 4"-thick polyiso. And so, rather than tape or velcro the beveled edges, am looking for an extremely strong permanent adhesive. Still researching what might be best. A test I did in 2011 of asphalt emulsion (spreadable roofing tar-like compound) has held through heat and cold on both polyiso and xps. But it's not a pretty looking solution. Polyiso supposedly is compatible with most construction adhesives. 

Not to take this thread too far afield, but am facing a lot of other little challenges when trying to create a "permanent" hexayurt of polyiso. Issues like moisture barriers in and out, moisture venting, window flashing, solid door framing, etc. (My salvage-yard polyiso is not foil-faced, but rather, paper faced and so provides no moisture barrier either inside or outside.)

[ken winston caine]

To clarify:

My experiment with asphalt emulsion as an adhesive on XPS and on polyiso foam was not on a hexayurt, but on two small pieces of each -- gluing them together. Seemed to lock them together nicely, but bled black tar at the seams.

On Saturday, June 17, 2017 at 3:31:04 PM UTC-6, Steve Upstill (Swifty) wrote:

[ken winston caine]

Here's some more information I've found. (Not for gluing Mylar, though.) Am going to experiment soon with the Liquid Nails product mentioned. This week or next. Will report back.

"...The manufacturer of the polyiso I am using (Rmax thermasheath -3) recommended Liquid Nails heavy duty construction adhesive (LN 903/LNP-903 - latex base). I contacted Loctitie (they makePL-300 for foamboard) but their representative stated that PL-300 does not work well with foil faced polyiso, nor do any of their other products. Siga Primur has been recommended as a superior product for my application, but this product costs an arm and a leg."

-- http://www.greenbuildingadvisor.com/community/forum/energy-efficiency-and-durability/39868/foil-faced-polyiso-and-construction-adhesive

"Panel & Foam Adhesive (LN-609)

This fast-bonding adhesive is like an extra set of hands providing a sure hold, precision placement and less nailing. Excellent as a wall adhesive, it offers 10 minutes of working time and an impact-resistant bond."

-- http://www.liquidnails.com/products/bonding-adhesive-LN609

"Key Features

Will not stain

Instant-grab formula

Reduces nailing

Flexible and strong, water-resistant bond

Retains precise placement

Impact resistant

Contributes to LEED® certification

Contributes toward NAHB National Green Building Standard™ certification of the structure

Recommended For:

use as a wall adhesive for paneling, foamboard, MDF board and paneling, wainscoting, corkboard, wood, foam and plastic molding, and all types of insulation board.

NOT Recommended For:

uses other than paneling, molding, foamboard or EIFS installation, or use between two non-porous surfaces.

Available Sizes

10 oz. cartridge

Coverage

10 oz. cartridge covers 32 lineal ft.

Max VOC

43 GPL

Specifications

ASTM C-557

*Please note that the typical dry time for most construction adhesives is approximately 24 hours. This may vary due to temperature, humidity amount of product applied and surface porosity."

-- ibid

"Surface Preparation

All panels must be separated and conditioned to room temperature for 48 hours prior to installation. Preparation: Surfaces must be clean, dry and structurally sound before application of this fast-bonding adhesive. Cut and pre-fit materials prior to installation.

Application

1. Cut nozzle at a 45? angle to desired bead size (marked on nozzle). 2. Puncture inner seal with nail or wire. 3. Adhere materials within 20 minutes of gunning fast-bonding adhesive. Due to panel inconsistencies, for best results, bracing and/or nailing may be required. Humidity may extend dry time of fast-bonding adhesive. Instant-grab method: Paneling — Apply 1/4" bead of fast-bonding adhesive approximately 1" from edge of panel around the perimeter. Apply two zig-zag 1/4" beads of fast-bonding adhesive in the middle of the panel. Press panel firmly into place. Remove panel from wall for one minute. Rejoin panel to wall. Molding — Apply 1/4" zig-zag bead of fast-bonding adhesive to back of molding. Press molding firmly into place. Starting at one end, nail every 12".

Cleanup

If this fast-bonding adhesive is wet, use water promptly. If the fast-bonding adhesive has dried, scrape it away, then remove residue using a cloth dampened with mineral spirits."

-- ibid

On Saturday, June 17, 2017 at 3:31:04 PM UTC-6, Steve Upstill (Swifty) wrote:

[ken winston caine]

More ideas and experience here:

https://www.google.com/search?q=How+to+glue+mylar&oq=How+to+glue+mylar&aqs=chrome..69i57j0l5.2575j0j4&sourceid=chrome&ie=UTF-8

On Saturday, June 17, 2017 at 3:31:04 PM UTC-6, Steve Upstill (Swifty) wrote: