Trade Scopes 9 min read • Oct 12, 2026

Commercial Kitchen Buildouts: Type 1 Hoods, Ansul Systems & Health Code

Contractor guide to commercial restaurant kitchen construction in Texas. Type 1 grease hoods, makeup air units (MAU), UL 300 Ansul fire suppression, quarry tile flooring, and health department approvals.

Restaurant and commercial kitchen buildouts represent the most complex general contracting projects in Texas, combining extreme heat loads, heavy grease exhaust, high-pressure gas, and stringent municipal health codes.

Key Commercial Kitchen Code Requirements (NFPA 96 & Texas Food Establishment Rules)

System ComponentMandatory SpecificationInspection Authority
Type 1 Hood Exhaust Duct16-gauge carbon steel or 18-gauge stainless steel welded liquid-tightCity Mechanical Inspector
Grease Duct Clearance18" clearance to combustibles (or UL 2-hour rated fire wrap)City Fire Marshal
Ansul Fire SuppressionUL 300 wet-chemical system with automatic gas shutoff valveFire Marshal & Certified Ansul Tech
Kitchen FlooringQuarry tile with epoxy grout or seamless urethane cement with 6" coved baseCounty / City Health Department
Handwash SinksDedicated barrier-free sinks within 25 ft of every prep stationCity Health Inspector

Grease Hood Makeup Air Interlock

The makeup air supply fan and grease exhaust fan must be electrically interlocked through a commercial control panel so that activating the exhaust automatically triggers incoming replacement air, maintaining proper balance across the kitchen.

Frequently Asked Questions

What is the difference between a Type 1 and Type 2 kitchen hood in Texas?

A Type 1 hood is specifically designed for grease, smoke, and open flame cooking appliances (fryers, griddles, ranges) and requires liquid-tight welded 16-gauge grease ducting and an Ansul fire suppression system. A Type 2 hood is for heat, steam, and moisture removal only (commercial dishwashers, pizza ovens).

Why is makeup air (MAU) mandatory for commercial kitchen hoods?

High-power exhaust fans pull thousands of cubic feet of air per minute (CFM) out of the kitchen. Without a dedicated makeup air unit introducing tempered outside air, dangerous negative building pressure occurs, backdrafting water heaters and slamming doors.

What flooring material is required in Texas commercial kitchens?

Texas health departments require non-porous, easily cleanable, slip-resistant commercial flooring with 6-inch sanitary coved base tiles. Commercial quarry tile with epoxy grout or urethane cement seamless floors are the industry standard.

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