DMI 3 in. Round Insulation Plates, SAE J1392, 1000 Per Box

DMI 3 in. round insulation plates fasten insulation board to steel, wood or masonry roof decks and distribute the clamping force of commercial roofing fasteners. Each plate is SAE J1392 spec, 3 in. (76 mm) diameter, made from 0.019 in. material with a universal recessed hole. One box contains 1,000 mill-finish plates.

Key Features:

• Distributes clamping force: Designed to spread the clamping force of commercial fasteners for secure insulation board attachment.
• All deck types: Suitable for insulation attachment to steel, wood or masonry roof decks.
• Ribbed for strength: Multiple rib design adds plate strength during and after fastening.
• Low installed profile: Recessed fastener hole lets the screw head sit low for a flush installed profile.
• Universal fit: Works with many manufacturers’ commercial roofing screws, including Panclip SDL, #12, #14, #15 and 1/4 in. diameter masonry fasteners.
• Bulk box: Supplied 1,000 plates per box for full commercial job coverage.

Specifications Table:

Coverage & How Much You Need:

One box of 1,000 plates fastens 1,000 fastening points; divide total insulation square footage by your fastener density (plates per board or per square foot, per fastener pattern requirements) to determine boxes needed.

Fit and Compatibility:

Universal for use with many manufacturers’ commercial roofing screws including Panclip SDL, #12, #14, #15 and 1/4 in. diameter masonry fasteners. Fasteners sold separately.

Frequently Asked Questions (FAQ):

Q: What deck types do these plates work on?
A: They are designed for insulation board attachment to steel, wood or masonry roof decks.

Q: What size are the plates?
A: Each plate is 3 in. (76 mm) in diameter and made from 0.019 in. material to SAE J1392 spec.

Q: Which screws do they fit?
A: They are universal for many commercial roofing screws including Panclip SDL, #12, #14, #15 and 1/4 in. diameter masonry fasteners.

Q: How many come in a box?
A: One box contains 1,000 plates.

Q: Why a recessed hole?
A: The recessed fastener hole gives a low installed profile so the screw head sits flush under the membrane.

Expert Verdict Reviewed by the SuperArbor Pro Desk

Match plate diameter and gauge to your fastener and insulation thickness, and always follow the membrane manufacturer’s required fastener density for wind uplift. The recessed hole helps prevent the screw head from telegraphing through the membrane. On masonry decks, pair these with 1/4 in. masonry fasteners; on steel and wood decks, #12, #14 or #15 screws work.

Wear gloves and eye protection when driving fasteners; plates and screw points have sharp edges.

Stock up on DMI 3 in. round insulation plates, 1,000 per box, for your next commercial roof.