What is the best way to attached exterior rigid insulation to a house?

Heco topix screws - which type should be used for attaching insulation outside a house?

Mike Taylor Published: April 7, 2020, 4:45 p.m.Last updated: Sept. 11, 2020, 8:57 a.m.

Attaching battens through 4" EPS foam external insulation, should Therm Insulation or Stainless screws be used? Is it necessary to have the double thread design of ThermInsulation screws when insulating with EPA?

Responses (2)

Nate Briggs May 19, 2020, 2:41 p.m. Reply

What is your batten material? If rigid enough to receive a bit of pressure from the screw head without much deformation I would just use a flange head screw. The double threaded design does not provide any 'clamping' power, it just holds things where they are at the time the screw is installed, which is why it works well with softer insulation materials that the batten could be squashed into. As for stainless, assuming you'll do a rain screen of sorts below your siding I wouldn't pay the extra for stainless screws, my opinion.

Mike Taylor May 20, 2020, 11:56 a.m. Reply

Thanks. Batten material is EPS. I agree with you.

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