RamTough 250

HOT FLUID APPLIED ROOFING & WATERPROOFING SYSTEM

  • TECHNOLOGY

    Rubberized Asphalt

  • MATERIAL

    Hot Rubber

  • APPLICATION

    Fluid Applied

  • INSTALLATION

    Single Component

Ram Primer & Surface Conditioner

Ram Primer & Surface Conditioner

RamTough 250 (1st Coat)

RamTough 250 (1st Coat)

PolyFelt 125 VP

PolyFelt 125 VP | Reinforcement Fabric

RamTough 250 (2nd Coat)

RamTough 250 (2nd Coat)

Ram 203

Ram 203 | Protection Course

DESCRIPTION

RamTough 250 is a thermoplastic, rubberized asphalt membrane that forms a completely monolithic waterproof system without seams or joints, adhering to horizontal and vertical surfaces. Melted on site, it is spread to a 90 mil thickness, reinforced with polyester scrim, and over coated with a 125 mil thick topcoat of RamTough 250 which fuses through the polyester to the bottom coat.

 

RamTough 250 sets instantly and remains flexible for the duration of its life. Not designed to perform as a permanently exposed surface, RamTough 250 should be protected: insulation, special coatings, cap sheets, and Barrett Greenroof-Roofscapes® are among the many options available.

DESCRIPTION

The core of Barrett’s RamTough 250 waterproofing systems is a fluid-applied rubberized asphalt membrane, which forms a completely monolithic waterproof barrier without seams or joints.

 

The RamTough 250 formulation and manufacturing process yields a self-healing, elastomeric material with significantly better elongation, elasticity, low temperature flexibility, adhesion and toughness properties compared to all other types of membranes. 

 

RamTough 250 waterproofing is composed of SBS rubber polymers, specially refined unoxidized asphalt, recycled tires and mineral filler. It is melted on the jobsite, spread on the deck 90 mils thick, reinforced with polyester fabric, over-coated with another 125 mils of RamTough 250 and covered with an SBS reinforced protection course, creating a total membrane thickness of approximately 300 mils. Totally adhered, water cannot get under or through this four course application. With the protection layer in place, the membrane is ready to accept a variety of traffic bearing surfaces, insulation, aggregate ballast or a green roof assembly. 

 

The unique physical properties of the RamTough 250 DM system offers superior performance and durability, even in the presence of ponded water and extreme climate variations.

SLOPE & DECKS

Decks up to 1 in/ft incline require no special precautions. Contact Barrett Technical Services for slopes over 1 in/ft, vertical applications and decks other than concrete.

SURFACE PREPARATION

Concrete decks must be made reasonable smooth, dry, free of dirt, laitance, curing agents, debris and other contaminants. Prior to installing the membrane, apply a coat of Ram Primer and Surface Conditioner at a rate of 300-500 sq.ft./gal to all surfaces to be waterproofed. Allow the coat to dry thoroughly. Before proceeding, treat all cracks, construction and expansion joints in accordance with Barrett recommendations or approved details.

MEMBRANE APPLICATION

Starting at the low points of the deck, apply a base coat of RamTough 250 no less than 90 mils thick and approximately 44” wide. While still hot, install one ply of PolyFelt 125 VP reinforcement fabric into the RamTough 250. Standing off to the side, use a broom or squeegee to press the fabric into the hot bitumen carefully, so as to not create wrinkles or fish-mouths. If the sheet is not set straight and begins to run off a straight line, cut the roll and reset it, overlapping the end of the sheet by 12”. 

 

After the first run has been installed, return to the same starting point and install a second run of RamTough 250 and reinforcement, overlapping the first course by 3”. All end laps shall be a minimum of 6”. Ensure that there is a solid coat of RamTough 250 between all laps. There should be no place where fabric touches fabric. All laps shall be laid to allow for the flow of water over the lap, not against it. Continue working up the slope. 

After the base coat of waterproofing and reinforcement have been completed, apply a top coat of RamTough 250, applied at a minimum thickness of 125 mils.

WATER TESTING

It is recommended that all sections of the completed membrane installation be flood tested in accordance with ASTM D-5957 for 48 hours. Any leaks shall be repaired and the area retested. Some applications may require an Electronic Field Vector Mapping Test (EFVM) conducted by an approved surveyor.

PROTECTION COURSE

Once the water test is complete, install 1 ply of Ram 203 protection course. Provide 2” side-laps and 6” end-laps. The protection course is to cover all horizontal surfaces, as well as all vertical flashings. If the base flashing is to be permanently exposed, install 1 ply of Ram 306 granulated cap sheet into the top coat of RamTough 250 in lieu of the Ram 203. Use RamTough 250 as an adhesive, as required, to hold the protection course in place prior to it being covered with the specified surfacing.

SURFACING

Carefully install surfacing overburden (e.g. insulation, filter fabric and ballast, pavers, green roof assembly. etc.) as per the project specifications.

SAFETY INFORMATION

RamTough waterproofing products offer no unusual health or safety risks for products of this nature. As with any roofing and waterproofing installation process, proper ventilation, clothing and eye protection is important. 

For specific product information, contact the Barrett Company for a current Material Safety Data Sheets for any and all Barrett products. Obtain Material Safety Data Sheets from manufacturers whose materials may be used in conjunction with the Barrett waterproofing system. For installation safety information, consult the National Roofing Contractors Association (NRCA), the Occupational Safety and Health Administration (OSHA), and any other informed sources. 

The user should not assume that all safety measures are indicated or that other measures may not be required.

DETAILS

DESCRIPTION

The heart of the Barrett Ram-Tough 250 VMA (Vertical Membrane Assembly) is a fluid-applied rubberized asphalt membrane composed of SBS rubber polymers, specially refined unoxidized asphalt, recycled tire rubber and mineral filler. When applied it forms a completely monolithic waterproof barrier, without seams or joints.

The Ram-Tough 250 is a self-healing, elastomeric material with significantly better elongation, elasticity, low temperature flexibility, adhesion and toughness properties when compared to all other types of membranes. After the Ram-Tough 250 membrane is in place, a layer of Ram 400PS, a polymer modified, polyester reinforced, self adhering membrane is applied. When complete, this 190 mils thick waterproofing membrane prohibits water from getting under or through its multiple course application.

The unique physical properties of the Ram-Tough 250 VMA system offers superior performance and durability, even in the presence of continuous water pressure.

This system may qualify for LEEDS credits under certain conditions.

SURFACE PREPARATION

Concrete surfaces must be made reasonable smooth, dry, free of dirt, laitance, curing agents, debris, and all other contaminants. Prior to installing the membrane, apply a coat of Ram Primer and Surface Conditioner at a rate of 300-500 sq.ft./gal to all surfaces to be waterproofed.

Allow to dry tack-free. Before proceeding, treat all cracks, construction joints, expansion joints and wall penetrations in accordance with Barrett recommendations or approved details.

SEAL FOOTER/GRADE BEAM

Before the wall section is constructed, prime all surfaces of the footer and seal with Ram-Tough 250 membrane. Apply the Ram 250 around the base of each reinforcing rod, taking care not to get waterproofing materials more than 1 inch above the base of the reinforcing bars.

CORNER REINFORCEMENT

Once the wall section has been constructed and cured, clean the exposed membrane on the footer before making the tie-in. Prime outside wall surfaces. Reinforce all inside and outside corners using a 6 inch wide strip of Ram 400PS set in a continuous coat of hot applied Ram 250. Reinforce corners and projections before installing the primary wall membrane assembly. Position corner reinforcements a minimum of 3 inches onto both sides of the corner. Press into place to assure that it’s tightly embedded into the cove and totally adhered.

MEMBRANE APPLICATION

After the detail work is complete, coat the primed vertical primed surfaces with a continuous application of Ram-Tough 250 starting at the base of the outside edge of the footer to the top termination of the membrane application or to a point which can be easily reached.

While the Ram-Tough 250 is still warm, embed 1 ply of precut Ram 400 PS vertically in lengths up to 8 feet long. Remove the 3 inch zip-strip from the lap area of the preceding sheet before installing the next sheet. Lap exposed sheet 3 inches over the preceding sheet. On higher walls, apply membrane in two or more lifts with the upper overlapping the lower sheets by at least 2-1/2 inches. Remove the protective film from the top 3 inches of the lower course before overlapping. Roll membrane with a steel hand roller to assure total adhesion. Remove and repair all wrinkles, fishmouths or damaged membrane.

TOP EDGE TERMINATION

The top edge of the membrane shall terminate above grade level, mechanically fasten with a 1 inch termination bar, attached 8 inches on center. Seal the termination bar, the top edge of the membrane and all laps with a troweling of warm Ram-Tough 250 before the end of each work day. Cover exposed above grade membrane using metal counter flashing or some other means of providing permanent protection from sunlight.

PROTECTION COURSE

The membrane assembly requires protection during the backfilling process which can be accomplished in several ways. The use of a drainage mat, and/or insulation can serve as a protection course. If drainage or insulation is not required, it is recommended that Ram 203 protection course be used as a minimum. Ram 203 protection course can be adhered to the Ram 400PS by removing the plastic film from the 400PS and using the 400PS’s outer surface as a temporary adhesive. Install the Ram 203 vertically, pressing it firmly against the Ram 400PS to assure adhesion. Lap each sheet 3 inches over the preceding sheet and seal with Ram-Tough 250 or Ram Mastic.

BACKFILLING

Backfilling should begin immediately. The fill shall be free of large rocks or debris which could damage the membrane during the backfilling operation. Start initial backfill operations by hand placement of fill against membrane surface. Carefully place subsequent backfill as per the project specifications.

SAFETY INFORMATION

RamTough waterproofing products offer no unusual health or safety risks for products of this nature. As with any roofing and waterproofing installation process, proper ventilation, clothing and eye protection is important. 

For specific product information, contact the Barrett Company for a current Material Safety Data Sheets for any and all Barrett products. Obtain Material Safety Data Sheets from manufacturers whose materials may be used in conjunction with the Barrett waterproofing system. For installation safety information, consult the National Roofing Contractors Association (NRCA), the Occupational Safety and Health Administration (OSHA), and any other informed sources. 

The user should not assume that all safety measures are indicated or that other measures may not be required.

DETAILS

PROPERTIESMEASUREMENTTEST METHOD
ColorBlackN/A
Softening Point (°F)181°F (83°C)ASTM D-36
Solids Content (%)100%CGSB-37-GP-50
Ratio of Toughness to Peak Load0.040 (min)CGSB-37-GP-50
Low Temperature Crack Bridging CapacityNo Cracking ; No Adhesion Loss ; No SplittingCGSB-37-GP-50
Toughness (J) - 5.5 min11.7CGSB-37-GP-50
Penetration (0.1 mm)80 @ 25°C ; 155 @ 50°CCGSB-37-GP-50
Flow (mm)0.50 @ 60°CCGSB-37-GP-50
Flash Point327°C (620°F)CGSB-37-GP-50 ; ASTM D-92
Water Resistance (50°C for 4 days)No Delamination ; No Blistering ; No Emulsification ; No Deterioration ; No PinholesCGSB-37-GP-50 ; ASTM D-92
Adhesion1.2CGSB-37-GP-50
Viscosity4 SecondsCGSB-37-GP-50
Water Vapor Permeability0.18 ng/Pa m²sCGSB-37-GP-50
Water Absorption0.22 g gainCGSB-37-GP-50
Low Temperature Flexibility & AdhesionNo Cracking ; No Delamination ; No Adhesion LossCGSB-37-GP-50
Heat StabilityAged Samples ; No Change in Viscosity, Penetration Flow, or Low TemperatureCGSB-37-GP-50