Start with the board. Select the exact clip.

A hidden deck fastener must fit the profile, accommodate the material and attach correctly to the support.

Connection anatomy

See what the screw actually penetrates

The angled screw penetrates the clip, the first board, then the joist. The next board seats on the free wing; its opposite edge gets the next fastener.

Read with the exact product instructions. Features are simplified for visibility; these are not production drawings or structural details.

Decking · DeckWise

Ipe Clip Extreme

The 3/32-inch gap model, with an angled through-board attachment for hardwood.

Material scope: Air-dried hardwood; the product page also lists composite/PVC. Consult the species chart before choosing the gap.
First check: The linked Ipe Clip warranty requires authorized-dealer purchase and registration within 45 days, excludes improper installation, and does not pay removal/reinstallation costs. Read the current terms.

Species, dimensions & installation ↗

Decking · DeckWise

Ipe Clip Extreme-S

A 5/32-inch spacing system for the material categories named by DeckWise.

Material scope: Air-dried or kiln-dried hardwood, composite and PVC are listed categories.
First check: The current page uses Extreme-S; older tables use Extreme4. Do not transfer a species-specific Extreme4 result to an Extreme-S kit without manufacturer confirmation.

Species, dimensions & installation ↗

Decking · DeckWise

Ipe Clip ExtremeKD

A 1/4-inch spacing model. Larger spacing does not make every species suitable.

Material scope: Kiln-dried wood, composite and PVC categories; consult drying-specific results.
First check: In the species chart, kiln-dried Massaranduba is listed for ExtremeKD but rejected for Extreme and Extreme4. Do not collapse the three models into a single “Ipe Clip compatible” label.

Species, dimensions & installation ↗

Decking · Simpson Strong-Tie

EB-TY Premium

A reinforced biscuit system that fastens through the wood into the joist.

Material scope: Ipe and other exotic hardwoods, redwood and cedar. Premium wood kits are distinct from original composite kits.
First check: EB332W: 3/32-inch gap for air-dried decking. EB316W: 3/16 inch and EB14W: 1/4 inch for kiln-dried decking; the catalog gives 3/4–1-1/2-inch board thickness.

Species, dimensions & installation ↗

Decking · Simpson Strong-Tie

EB-TY Original — composite kits

The composite listings are original EB-TY, not steel-reinforced EB-TY Premium.

Material scope: Composite decking category; exact decking-brand approval still needs confirmation.
First check: C-F-2025 identifies 175-EBTYP and 175-EB TT as original products without a steel reinforcement plate.

Species, dimensions & installation ↗

Read the fine print

Same wood. Different clip. Different answer.

DeckWise’s chart distinguishes species and drying condition. “Listed” is a conditional manufacturer listing, not approval of your supplied board or assembly.

DeckWise chart: exact model names retained
Species / condition	Extreme	Extreme4 (legacy)	ExtremeKD
Ipe · air-dried 16–20%	Listed	Listed	Rejected: excessive gap after shrinkage
Pine · air- or kiln-dried	Rejected	Rejected	Rejected
Tigerwood · kiln-dried	Rejected	Listed	Listed
Garapa · kiln-dried	Rejected	Listed	Listed
Massaranduba · kiln-dried 14–16%	Rejected	Rejected	Listed
Tigerwood / Garapa / Massaranduba · air-dried	Rejected	Rejected	Rejected
Padauk / Acacia / Balau / Tatajuba / Merbau · kiln-dried	Rejected	Listed	Listed
Cumaru / other unlisted species	Not listed	Not listed	Not listed

Do not transfer the legacy Extreme4 column to Extreme-S without confirmation. “Not listed” is neither approval nor prohibition. Manufacturer species chart.