Trem-Lar LRM - Tremco Roofing

1 Composition: Trem-Lar LRM is a single component, bitumenmodified moisture curing Uses: Trem-Lar LRM is designed as the waterproofingmembrane in a fully adhered protected membrane roof sys-tem for structural concrete to UL Roofing Materials and Systems Directory and/orFM Approvals for applicable system : Not intended for twin-slab, precast, or lightweight con-crete. Not for use as a traffic-bearing surface. Trem-Lar LRM requires acceptable protective surfacing suchas insulation with ballast, pavers, reflective and protectivecoatings, decorative surfaces, and protective covers.

2 Concrete substrates must be free of all traces of bitumen prior to application of Trem-Lar : Horizontal areas: Squeegee ( Trem-Lar LRM-H)Vertical surfaces: Trowel ( Trem-Lar LRM-V)Equipment: Triangular notched squeegee to provide 60 mil( ) thick uniform : Available in 5 gallon ( ) : BlackStorage Life: Up to 12 months in unopened Standards: Meets or exceeds performance stan-dards of ASTM C LRMA One-Part Liquid Applied ElastomericRoofing MembraneRoofing & Weatherproofing Peace of Mind APPLICATION DATA:Conditions:Do not begin work during rainy or inclement weather or whensuch weather is imminent.

3 Rainfall will damage freshly appliedmaterial. Minimum recommended ambient air temperatureduring application: 40 F (4 C) and rising. Maximum allowedsurface temperature during application: 110 F (43 C).SURFACE PREPARATION:Concrete: Surface shall be dry, free of dust, oil, bitumen, cur-ing agents, form release agents, and other strength: 2,500 psi (17237 kPa), minimum. Theconcrete shall have a light steel trowel finish followed by anatural hairbroom to render a uniform granular texture. Newconcrete must cure 28 days minimum by either water, burlapor polyethylene cure , shotblast, or scarify existing concrete to assure thesubstrate is free of contamination and it has the proper surfacetexture to assure adhesion of the Trem-Lar the dry condition of the concrete with a rubber mattest.

4 After taping the mat to the concrete for at least 24 hours,no liquid water droplets should be present on the undersideof the mat. A valid test requires the concrete be warmed bythe sun during the :Clean metal surfaces of paint, oils, rust, and other /PREPARATORY WORK: Priming for Detail Course: Prime concrete detail areas with AlphaGuard C-Prime prior to application of Trem-Lar primer to fully dry prior to application of Trem-Lar penetrations:Provide a 1 x 1 (25 x 25mm) cant ofTrem-Lar LRM-V at parapet walls, columns, stacks, etc.

5 InstallTrem-Lar LRM as a flashing to the specified height Extendflashing 6 (150mm) onto horizontal surface. Coating thick-ness: 60 mils ( ) (wet).Cracks of 1/16 ( ) or less:Pretreat shrinkage and non-moving structural cracks with Trem-Lar LRM applied at a thick-ness of 60 mils ( ) (wet) 3 (75mm) either side of of 1/16 ( ) or greater:Rout all cracks, movingstructural joints, and cold joints to 1/4 wide x 1/2 ( ) deep. Insert a 3/8 ( ) closed-cell polyethylenebacker rod. Recess backer rod 1/8 ( ) from surface.

6 Fillrecess with Trem-Lar LRM applied at a thickness of 60 mils( ) (wet) 3 (75mm) either side of the crack/joint. Propertreatment of expansion joints is critical. Consult your localTremco Representative for AdvantagesFeaturesBenefitsFully bonded to concrete Reduces potential forwater migration undermembraneCold applied Can be used in difficultaccess areas No hot kettlesOne-part No mixing or specialequipment neededOne coat application Labor savingsLow modulus Accommodates typicalHigh elongationmovementHigh recoveryAPPLICATION: Priming Concrete/Masonry: Prime all concrete and verticalmasonry with AlphaGuard C-Prime.

7 AlphaGuard C-Prime mustdry tack free (6 to 8 hours at 75 F (24 C) and 50% ) priorto application of Trem-Lar LRM. Open time of AlphaGuard C-Prime is 72 hours after tack free cure. Trem-Lar LRM must beapplied within the open time. If open time is exceeded, sub-strate must first be mechanically abraded, then , prime concrete substrates with Tremlar LRM-Hthinned with toluene at a rate of 32 oz. toluene per gallon ofTrem-Lar LRM-H. Apply the thinned Trem-Lar LRM-H to theclean, dry surface at a coverage rate of 1 gal/SQ ( L/m2)Allow to dry 1 hour minimum and apply the specified cover-age of Trem-Lar LRM-H (must be applied the same day).

8 Priming Trem-Lar LRM: If Trem-Lar LRM has been applied andcured in excess of 48 hours and an additional coat of Trem-LarLRM must be applied, prime the existing Trem-Lar LRM with Ge-oGard Primer. Apply Trem-Lar LRM while GeoGard Primer is : Apply Trem-Lar LRM-H directly to surface bysqueegee and cross-roll with a long nap roller to a uniform thick-ness. Overlap previous day s work 6 (150mm) : 25 ft2/gal. ( ) per coat Test: Allow membrane to cure 36 hours minimum(75 F (24 C) @ 60% RH). Longer cure times will be requiredat lower temperatures and/or to placement of protective surfacing, water test appliedarea.

9 Block drains and provide perimeter dams. Flood testarea with water for 48 hours. Do not exceed deck design loadrequirements during water Time: 24 hours at 75 F (24 C), 50% RH. Longer curetimes will result at lower temperatures and/or lower relative : Use Xylene or Toluene to remove Trem-Lar LRMfrom equipment before cure. Precautions: Users must read and follow container labels andMaterial Safety Data Sheets for instructions for health andsafety precautions prior to and during and Cost:Contact your local Tremco RoofingRepresentative for pricing and availability.

10 For the name andnumber of your Representative, call the Roofing Division at216 :Your local Tremco Roofing Representative canprovide you with effective maintenance procedures whichmay vary, depending upon specific conditions. Periodic in-spections, early repairs and preventive maintenance are allpart of a sound roof : Tremco Inc. warrants Trem-Lar LRM tobe free of defects and to meet published physical propertieswhen tested according to ASTM and Tremco this warranty, any Trem-Lar LRM product that is provedto be defective when applied in accordance to our written in-structions, and in applications recommended by Tremco assuitable for this product will be replaced with like product atno charge.