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Skill Claude Desktop · Claude Code

# /epd-to-spec

CSI specification sections with EPD requirements and GWP thresholds

[Install ↓](#install) [View on GitHub →](https://github.com/AlpacaLabsLLC/skills-for-architects/tree/main/skills/epd-to-spec) [New to skills? →](/articles/claude-code-cheat-sheet) [All skills →](/skills)

[Specifications](/skills?tag=specifications) [Document Generation](/skills?tag=document-generation)

## What it does

Type `/as:epd-to-spec` with a materials list, GWP limits, or EPD data. The skill generates CSI three-part specification sections that require Type III EPDs, set maximum GWP thresholds, and include submittal and verification language referencing ISO 14025, ISO 21930, and EN 15804.

Pairs with `/as:spec-writer` — this skill adds sustainability and EPD requirements to specific sections, while `/as:spec-writer` produces full outline specs without EPD language.

## Install

**Claude Desktop:**

1.  Open **Customize** → **Browse plugins**
2.  Click **+** → **Add marketplace from GitHub**
3.  Enter `AlpacaLabsLLC/skills-for-architects`
4.  Install **Architecture Studio**

**Claude Code (terminal):**

```
claude plugin marketplace add AlpacaLabsLLC/skills-for-architects
claude plugin install as@skills-for-architects
```

Or symlink just this skill:

```
git clone https://github.com/AlpacaLabsLLC/skills-for-architects.git
ln -s $(pwd)/skills-for-architects/skills/epd-to-spec ~/.claude/skills/epd-to-spec
```

## Usage

With explicit thresholds:

```
/as:epd-to-spec concrete max 350 kg CO2e/m3, rebar max 1.0 kg CO2e/kg, CLT max 125 kg CO2e/m3
```

From EPD data:

```
/as:epd-to-spec use the Arboreal CLT EPD I just parsed
```

From a project description:

```
/as:epd-to-spec write EPD requirements for a mass timber office — CLT floors and walls, steel connections, mineral wool insulation
```

## What it generates

For each material, a three-part CSI section with EPD-specific additions:

-   **Part 1** — EPD submittal requirements (ISO 14025, third-party verification), sustainability article with GWP thresholds, quality assurance for environmental performance
-   **Part 2** — Maximum GWP per declared unit, sustainable sourcing requirements, manufacturer EPD qualification
-   **Part 3** — Standard execution (no EPD-specific additions)

Plus optional LEED v4.1 MRc2 language (Option 1 disclosure + Option 2 optimization).

## Sample: Section 06 17 00 — Shop-Fabricated Structural Wood

Generated from: _Arboreal CLT EPD data (GWP-fossil: 111 kg CO2e/m3)_

**1.04 Submittals**

D. Environmental Product Declarations:

1.  Submit product-specific Type III EPD conforming to ISO 14025 and EN 15804+A2.
2.  EPD shall be published by an accredited program operator (Environdec, UL, NSF, ASTM, or IBU).
3.  EPD shall be current, valid, and third-party verified.
4.  EPD shall report GWP-fossil separately from GWP-biogenic per EN 15804+A2.

**1.06 Sustainability Requirements**

A. Maximum Global Warming Potential — Fossil (GWP-fossil): Cross-Laminated Timber: Maximum 111 kg CO2e per m3, life cycle stages A1-A3.

B. Sustainable Forestry: 100% of wood fiber from FSC, PEFC, or SFI certified forests.

C. Adhesives: Formaldehyde-free. PUR preferred.

**2.01 Manufacturers**

Arboreal, Stora Enso, Kalesnikoff, or approved equal. All manufacturers shall provide a conforming EPD.

**2.03 Environmental Performance Requirements**

Maximum GWP-fossil: 111 kg CO2e per m3 (A1-A3). GWP-fossil shall exclude biogenic carbon per EN 15804+A2.

Output saves as a markdown specification file organized by CSI division.

## Divisions covered

The skill covers all divisions where EPDs are common: 03 (Concrete), 05 (Metals), 06 (Wood/CLT/Glulam), 07 (Insulation, Roofing, Air Barriers), 08 (Curtain Wall), 09 (Gypsum, Tile, Ceilings, Flooring), and 32 (Paving).

## Pairs with

-   [`/as:spec-writer`](/skills/spec-writer) — full outline specs without EPD language
-   [`/as:epd-parser`](/skills/epd-parser) — parse EPD PDFs to extract threshold values
-   [`/as:epd-compare`](/skills/epd-compare) — compare products before setting thresholds

## Related skills

[01

### /epd-compare

Side-by-side environmental impact comparison with LEED MRc2 check

→](/skills/epd-compare) [02

### /epd-parser

Extract structured environmental impact data from EPD PDFs

→](/skills/epd-parser) [03

### /epd-research

Search registries and manufacturer sites for Environmental Product Declarations

→](/skills/epd-research)

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