Specification History

Install panels to prescribed R-value in compliance with the manufacturer's instructions including:

using fasteners of the proper length and material,

installing fasteners with correct fastener spacing, and

Install panels above grade as per manufacture's specification

Seal all insulation seams, joints and connections in each layer with compatible sealant (caulk, tape, mastic, etc.)

Select safe and effective fasteners and sealants that provide secure and weathertight contact with retrofit panels to existing sheathing 

Conform with required building codes for panel R-value and installation 

Determine appropriate panel thickness  

for optimum cost/benefit and prevention of condensation on warm side of retrofit panel 

challenging wall details might be resolved with the use of different retrofit panel thicknesses 

Install panels using fasteners of the proper length and material specified by manufacturer  

Seal all panel joints and seams 

must be compatible with extruded polystyrene (EPS) if adhesive or sealant is in contact with EPS, or 

low-expansion and low volatile organic compound (VOC) spray polyurethane foam may be used to seal gaps or voids, or 

sealing mastic or panel sealant may be used to seal gaps and voids 

Existing overhangs must adequately exceed new wall thickness to prevent moisture intrusion

All installed panels should be at least 8 inches above grade 

Select safe and effective fasteners and sealants that provide secure and weathertight contact with retrofit panels to existing sheathing