Straight Barrel Mission 18

Straight Barrel Mission 18 is a terra cotta tile in the Legacy Collection of Ludowici Roof Tile, with an 18 3/8 inch length. It is a straight-sided mission barrel profile inspired by the Spanish Missions of the southwestern United States, with pans and covers that have a smooth clay surface.

The 18 3/8 inch tile gives fewer pieces per square than the other Straight Barrel Mission lengths, 14 1/4 inches and 16 inches. It can be laid in straight rows or staggered, and it is one of the mission style clay tile roofing profiles in the line.

• Weight per square: 1165 lbs
• Pieces per square: 163
• Overall size: 8 inches x 18 3/8 inches
• Exposure: 11 1/2 inches C.C. x 15 3/8 inches
• Installed barrel height off deck: 4 3/8 inches nominal
• Minimum slope: 5:12

The 18 3/8 inch tile is laid on a slope of 5:12 or steeper with a headlap of 3 inches or more. LRT-435 is the installation manual for the 18 3/8 inch length; LRT-435S is the Spanish edition.

The fittings listed for the 18 3/8 inch tile are shown below.

• Rolled rake: length 18 3/8 inches, exposure 15 3/8 inches, 7.1 lbs per piece
• Eave closure: length 11 1/2 inches, exposure 11 1/2 inches, 1.7 lbs per piece
• Top fixture: length 7 1/2 inches, exposure 11 1/2 inches, 1.7 lbs per piece
• Short course: length 15 3/8 inches, exposure 12 3/8 inches, 6.5 lbs per piece

Under the laid-tight method, short course pieces on the 18 3/8 inch tile are the shorter cap tiles in the first row and the pans in the last row at the ridge.

Two trim groups cover hips and ridges for this profile.

• Circular Cover hip and ridge trim group: CC-Hip Starter, CC-Hip, CC-Ridge, CC-Closed Ridge End, CC-2 Hip 1 Ridge Terminal and CC-Low Bump 2 Hip 1 Ridge Terminal
• #102/#206 hip and ridge trim group: #152 Hip Starter, #102 Hip Roll, #206 Ridge, #206 Closed Ridge End, #102/#206 2 Hip 1 Ridge Terminal, #405 High Bump 2 Hip 1 Ridge Terminal and #406 High Bump Gable Terminal

Smooth is the base texture of the 18 3/8 inch tile. It can be ordered in these custom textures: battered butts, brushed butts, fine machine scoring, hand roughed, hand scraped, hand slushed, heavy machine scoring, medium machine scoring, top sand and weathered. Standard and custom Ludowici colors, mists, blends and terra cotta glazes can all be had on the 18 3/8 inch tile.

Straight Barrel Mission 18 listings: Listed approvals are Miami-Dade NOA No. 12-0904.17 and Florida No. FL 13777. Classification: ASTM C1167 Grade 1, water absorption below 2%, fire rating Class A.

• Miami-Dade NOA No. 23-0125.08 (Mission)
• IAPMO UES ER-452; evaluation report ER 0452-2026
• Texas Department of Insurance evaluation report, file rc309
• Florida Building Code evaluation report

A 75-year warranty against color fading and manufacturing defects covers this tile, which is made in the United States.

The 18 3/8 inch tile has these five accessory pieces.

• Terminal: installed where hips and ridges intersect
• Ridge tile: covers the uppermost horizontal part of the roof
• Hip starter (also called bullnose): installed at the bottom of the hip
• Closed ridge end: closed-end tile installed at the gable end of the ridge
• Hip tile: covers the external angle where two sloped planes meet

PDF and AutoCAD versions exist of each 18 3/8 inch drawing, plus zip bundles of all details.

• 18SBM-100: Section at eave
• 18SBM-101: Section at side wall
• 18SBM-102: Section at head wall
• 18SBM-103: Section at rake edge
• 18SBM-200: Section at circular cover hip
• 18SBM-201: Section at #102 hip
• 18SBM-300: Section at circular cover ridge
• 18SBM-301: Section at circular cover vented ridge
• 18SBM-302: Section at #206 ridge
• 18SBM-303: Section at #206 vented ridge
• 18SBM-400: Section at field cut valley
• 18SBM-401: Section at cut and closed valley

For the 18 3/8 inch tile, drawings 200 to 303 are keyed 5A, 5B, 6A, 6B, 6C and 6D, and 400 and 401 are keyed 7A and 7B.

• Product sheet: LRT-527 Straight Barrel Mission 18 Clay Roof Tile
• Installation manual: LRT-435 Ludowici Barrel Tile Installation Manual (English), LRT-435S (Spanish)
• Environmental Product Declaration for clay tiles and fittings
• Safety data sheets for glazed and unglazed clay roofing tile: OSHA GHS SDS 2014 and China GHS SDS 2014

The 18 3/8 inch length is the longest of the three Straight Barrel Mission lengths, and each length has its own drawing set.