BURmastic Composite Ply HT.pdf

Coated Trilaminate Reinforced SBS Modified Ply Sheet for Built-Up and Modified Bitumen Roofing Systems

BURmastic® Composite Ply HT is polyester/glass scrim/glass mat trilaminate reinforcement coated with SBS modified waterproofing asphalt. BURmastic Composite Ply HT has exceptional tensile and tear strength and is asbestos-free.

BURmastic Composite Ply HT is designed as a ply sheet for application in multi-ply configurations over insulation boards and/or base sheets in the BURmastic and POWERply cold process roof systems.

BURmastic Composite Ply HT can also be used as a hot or cold applied base sheet. Additionally, BURmastic Composite Ply HT is used as a mechanically attached base sheet or as the base membrane in the AlphaGuard® MT/MTS/BIO Fluid Applid Roof Sytem. BURmastic Composite Ply HT exceeds the requirements of ASTM D 4601, Type II. Refer to UL Roofing Materials and Systems Directory and/or FM Approvals RoofNav for applicable system configurations.

Available in 3’x72’ (915mm x 21.9m) rolls, 200 ft2/roll (18.6m2/roll). Sold by the pallet (20 rolls/pallet).

79 lbs/roll (35.8 kg)

Roof replacement usually involves more complexities than new construction roofing. Often encountered are situations such as rusted/deteriorated decks, rotted wood components, rooftop equipment which cannot be moved or shut down, and numerous other conditions.

The following application information is designed to serve as a general guide. Your local Tremco Representative can prepare detailed specifications based upon your roof’s conditions.

The following application information is designed to serve as a general guide. Your local Tremco Representative can prepare detailed specifications based upon your roof’s conditions.

Deck must be properly designed and structurally sound.

Ponding conditions are unacceptable and will adversely affect performance of any roofing system.

If positive drainage does not exist, water removal must be facilitated by lowering drains and/or installing additional drains, tapered insulation, or lightweight cellular concrete.

Insulation must be dry and kept dry. No more insulation shall be installed than can be covered in that day.

Installation Procedures: According to particular job specification, prepare surface to be covered:

• Replace areas of wet insulation, deteriorated deck and wood components.

• Install roof insulation, protection course, or base sheet.

Cold Process BUR: Starting at the low point of the roof, plan placement of BURmastic Composite Ply HT to ensure that water will flow over or along, but not against, exposed ply edges.

DESCRIPTION

BASIC USES

PACKAGING

GENERAL

APPLICATION DATA

STRUCTURAL DECKS

DRAINAGE

INSULATION

APPLICATION

BURmastic® Composite Ply HT

FEATURES

Multi-ply system

Trilaminate reinforcement

Continuous application

UL Classified

BENEFITS

• Redundant waterproofing

• Superior strength and tear resistance for long term performance

• Tough, durable protection

• Reduced labor costs

• Reduced opportunity of application defects

• Increases application simplicity

• Fire protection

BURmastic® Composite Ply HT

APPLICATION

CONTINUED

SURFACING OPTIONS

LIMITATIONS

PHYSICAL PROPERTIES

Continuous Lay Application:

• Apply cold process adhesive in a uniform and continuous application. Ply shall never touch ply.

• Align the full roll on the underlying ply line.

• Roll out the Composite Ply HT roll into the cold adhesive.

• Broom the Composite Ply HT into place fully and heavily using a 32” wide broom. Do not use a felt rake or squeegee.

• Allow the Composite Ply HT roll to run true; if roll goes off line, cut the ply immediately and reset. Do not attempt to push or stretch roll back onto underlying line.

Cut and Relax: Alternately, the cut and relax method may be used:

• Cut 18’ sections of Composite Ply HT and stack the sections for approx. 1 hour.

• Apply cold process adhesive at the recommended coverage rate.

• Align and set the ply using 2 men; 1st man anchors the ply and 2nd man assures the ply is set on line.

• Broom the Composite Ply HT into place fully and heavily, using a 32” wide broom.

Do not use a felt rake or squeegee.

Three ply membrane: Start and finish roof membrane along edges, terminations, and projections, use starting/finishing strips — 12, 24, and 36” (305mm, 610mm, and 915mm) wide plies.

Install BURmastic Composite Ply HT in shingle fashion. Overlap starter strips 26” (660mm) with first ply, then overlap each succeeding ply 24-2/3” (625mm).

Four ply membrane: Start and finish roof membrane along edges, terminations, and projections, use starting/finishing strips — 9, 18, 27 and 36” (229mm, 457mm, 685mm, and 915mm) wide plies.

Install BURmastic Composite Ply HT in shingle fashion. Overlap starter strips 29” (750mm) with first ply, then overlap each succeeding ply 27-1/2” (698mm).

Base Sheet: Mechanically attach or embed a full width of BURmastic Composite Ply.

Side laps: 4” (100mm). End laps: 6” (150mm) minimum and staggered. Broom plies to assure complete contact. Extend all plies to top edges of all cants and cut off evenly.

Overlap previous work 24” (610mm).

Smooth and aggregate surfacing options are available. Consult your local Tremco Representative for specific recommendations.

• BURmastic Composite Ply HT is not intended to perform under ponding conditions.

Positive drainage is required.

• BURmastic Composite Ply HT should not be exposed to solvents, oils or other contaminants harmful to asphaltic materials.

• Do not hot apply BURmastic Composite Ply HT in a multi-layer, shingle application.

PROPERTY TYPICAL VALUE TEST METHOD

Weight 38 lb/ 100 ft2 (1.8 kg/m2) ASTM D 5147

Thickness 60 mils (1.5 mm) ASTM D 5147

Tensile strength @ 77°F (25°C) 165 lbf/in (28.7 kN/m) MD, 150 lbf/in 26.1 kN/m) XMD ASTM D 5147

Tensile strength @ 0°F (-18°C) 190 lbf/in (33.1 kN/m) MD, 180 lbf/in (31.4 kN/m) XMD ASTM D 5147

Tear strength @ 77°F (25°C) 260 lbf (1155N) MD, 230 lbf (1022 N) XMD ASTM D 5147

Pliability, 1/2 in. No failures (13mm) radius ASTM D 146

Mass of desaturated, mat, min. 3.0 lb/ 100 ft2 (146 g/m2) ASTM D 228

Surfacing stabilizer, max. 65% ASTM D 4601

Asphalt 10.0 lb/ 100 ft2 (485g/m2) minimum ASTM D 228

BURmastic® Composite Ply HT

Your local Tremco Roofing Sales Representative can provide you with effective maintenance procedures which may vary, depending upon specific conditions. Periodic inspections, early repairs and preventative maintenance are all part of a sound roof program.

Users must read container labels and Safety Data Sheets for health and safety precautions prior to use.

Your local Tremco Roofing Sales Representative, working with the Technical Service Staff, can help analyze conditions and needs to develop recommendations for special applications.

MAINTENANCE

PRECAUTIONS

TECHNICAL SUPPORT

Tremco is a US Registered trademark of Tremco CPG Inc.

The information provided on this data page supersedes all previous data concerning this product and its application.

The Statements provided concerning the materials shown are intended solely as a general guide for material usage and are believed to be true and accurate. Since the manner of use is beyond our control, Tremco DOES NOT MAKE NOR DOES IT AUTHORIZE ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PURPOSE, OR ANY OTHER WARRANTY, GUARANTEE OR REPRESENTATION, EXPRESSED OR IMPLIED, CONCERNING THIS MATERIAL EXCEPT THAT IT CONFORMS TO TREMCO’S PRODUCT SAMPLE. Buyer and user accept the product under those conditions and assume the risk of any failure, injury of person or property and loss or liability resulting from the handling, storage or use of the product, whether or not it is handled, stored, used in accordance with directions or specifications. UNDER NO CIRCUMSTANCE SHALL TREMCO BE LIABLE FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES ARISING FROM ANY BREACH OF WARRANTY. IN ALL CASES, TREMCO’S LIABILITY IS LIMITED, AT TREMCO’S OPTION, TO THE REPLACEMENT OF GOODS, OR THEIR VALUE, PROVEN TO BE DEFECTIVE IN MANUFACTURING.

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