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Spanish-S Tile Installation Technical Data Mud / Nail:
Shade Blending: During the installation process, examine the installation at a distance from ground level, for unwanted patterns, straight true lines, shade variation and good color blend. Doing this at regular intervals will insure an acceptable and attractive installation. The blending of tiles from different pallets, is very important to avoid streaks or "hot spots". Shade variation is a natural occurence, due to the nature of clay. 1. MATERIALS: A. Clay tiles shall be Spanish ´S´ manufactured by Isnar Ceramic, 19 long by 10-1/2 wide nominally. B. Under eave shall be (specify one): 1. Clay Eave Closure 2. Rubber Eave Closure 3. Mortar filling w/ weep hole 4. Metal Closure C. Asphalt Plastic Cement: Heavy body composed of asphalt and other minerals, conforming to ASTM D2822 and Federal Spec. SSC-153 Type 1. D. Cement Mortar 1. Cements a. Blended Cements - Conforming to A.S.T.M C-91, Type M b. Portland Cement - Conforming to A.S.T.M C-150, Type I c. Masonry Cement - Conforming to A.S.T.M C-91, Type M 2. Sand - Conforming to A.S.T.M C-144, uniformly graded, cleaned and free from organic materials. 3. Mixes - Conforming to A.S.T.M C-270, Type M (select one) a. Cement 2.07 +- E-1-A b. Combination of cement 2.07 E-1-C 4. Mortar Flow 110 + or - 5% conforming to A.S.T.M C-230 Flow Table 2. DECKING: Solid decking shall be of proper thickness (1/2" Minimum plywood sheathing) to be structurely adequate and properly fastened to support the anticipated loads. Decking material and installation of it shall comply with all local Building Code Requirements. 3. UNDERLAYMENTS: Never install underlayment on wet, frozen or icy surfaces. Sweep roof surface broom clean. Cover all sloped roofs under tile with the best quality asphalt impregnated roofing felt weighing not less than 43# per square feet. Specify Desired Underlayment: Consult Local Building Codes for Compliance. Nail-On Installations: A. Minimum 4/12 and greater: Lay one layer of dry 90# base sheet with a sealed minimum 4" headlap and 6" side lap and nominal 2-1/2" tile headlap. All tile nail penetrations to be sealed with plastic cement. Mortar-On Installations: B. Pitches 2-1/2 /12 and greater (refer to local building code for minimum) lay one layer of 30# felt, secure in place with tin tags as code requires. Lay with minimum 2" headlap. Apply 90# mineral surfaced roofing felt to be solidly mopped to the 30# felt with hot asphalt. Lay with minimum 2" headlap and 6" side lap. Back nail 90# felt with cap or tin tags 12" 0.C. 4. FASTENING SYSTEMS: Nail-On Installations A. All nails should be large headed, 8 penny, corrosion resistant, long enough to penetrate through the sheathing by 3/4". Copper, stainless steel or hot dipped galvanized nails are to be considered to extend the life of the roof. All nails penetrating through the watertight seal, should be waterproofed with mastic sealant complying to ASTM D-2822-75, type II. Nail length may vary, depending on thickness of plywood and exposed ceiling situations where nail exposure is unwanted. B. For steep roof applications above 7/12, additional fasteners may be required i.e. tile systems, nail-locks, wind locks per manufacturers specifications (consult local building codes).
5. FLASHINGS: A. Valleys (select one) 1. Install roll valley minimum 16" width with 6" lap joints. Nail to secure in place as code requires. 2. Install preformed open valley minimum 16" width with minimum 2 1/2" high center and minimum 1" metal edge returns. Lap joints minimum 6". Secure in place as code requires. B. Dormers, side, chimneys and other vertical wall surface flashings shall extend upward at least 6" and be completely counter-flashed. Flashing shall extend under the tile a minimum, of 5" with a 1" turn up at edge. C. Where sloped roof surface meets the face of vertical wall surfaces at dormers, chimneys, and other walls, the flashing shall extend up the facing wall a minimum of 4" and extend downward over the top of the tile a minimum of 5". The vertical wall surface shall be completely counter flashed. D. Eave drip metal shall be nailed or stapled along and directly on top of sheeting, fastened 6" o.c. and 1/2" in from top flange. Lap all joints a minimum of 3". 6. APPLICATION OF TILE: A. For mortar on application, mark all horizontal lines at 16 1/2", which will provide a 2" nominal headlap. B. For nail-on application, mark horizontal guidelines at 16", which will provide a nominal 2 1/2" headlap. C. Mark all vertical guidelines at 9". D. Set first course at 16 1/2" from the eave, this will provide a 2" overhang at the eave. E. At the eave line, clay, rubber, mortar or metal bird stop shall be used to boost the first row of tile. Note: In high wind and hurricane areas, additional fasteners may be required at the eave course. Consult local Building Codes for requirements. F. For mortar-on settings, each tile shall be set over a full trowel of mortar placed directly under the projection of the left flat side of the tile. Press tile down firmly to allow wet mortar to fill "Dove Tail Locks" for proper bond. 1. For pitches 4/12 and above, nail eave course with one nail in addition to mortar. Apply plastic cement to seal all nail penetrations. 2. For pitches 6/12 up to and including 7/12, nail every third tile in every fifth course in addition to mortar. Apply plastic cement to seal all nail penetrations. 3. For pitches above 7/12, nail every tile in addition to mortar. G. For nail-on installations, install tile with nails of sufficient length to penetrate the deck by 3/4". For pitches above 6/12, all tiles shall be attached with a minimum of two nails. Seal all nail penetrations with plastic cement. H. At 55 ' above grade or greater, all tile must be attached with a minimum of two nails in both a nail-on or mortar set installation. I. Fasten and cement all gable rakes at the horizontal guidelines. J. Where tile overlaps flashing, tile must be secured with approved tile adhesive or cemented in place. K. Tile must be cut smooth and straight to maintain the proper width in the open valley. Width in the open valleys may vary according to local conditions. It is recommended that the minimum width of exposed metal be 4" . L. Where field tile meet the hip nailers, tile should be cut along the hip boards. The joint between the cut tile and the hip nailer shall be sealed neatly with plastic cement. M. All hip and ridge tiles shall be set in a bed of mortar and fastened with a 2-1/2" nail. It is then recommended that the mortar be pointed to a clean surface. CHECK WITH LOCAL CODE AUTHORITIES
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