JM PMMA Liquid Membrane

JM PMMA Liquid MembraneLiquids Application GuideFor all resins, thoroughly mix the entire container of resin for 2-3 minutes before eachuse, and prior to pouring off resin into a second container if batch mixing. Catalyzeonly the amount of material that can be used within 10-15 minutes. Add pre-measuredcatalyst to the resin component, stir for 2-minutes using a slow-speed mechanicalagitator or stirring stick and apply to substrate. The amount of catalyst added isbased on the weight of the resin used. When a scale is not available, the followingchart provides the density and approximate liquid measure for JM PMMA resincomponents:Density(g/cm3)JM PMMA ProductJM PMMA Primer - All PurposeJM PMMA Flashing Resin1.221.21Liquid Measureliters/kgkg/liter0.821.220.831.21The following charts can be used to calculate catalyst quantity and approximate workingtimes:JM PMMA Primer - All PurposeAmbientTemperatureCatalystPot Life*Rain Proof*Next Layer*Fully Cured*Catalyst per 10 kg unit32 F - 49 F50 F - 68 F(0 C - 10 C)(10 C - 20 C)6 (0.1 kg) packets 4 (0.1 kg) packets15 minutes30 minutes30 minutes2 hours69 F - 95 F(20 C - 35 C)2 (0.1 kg) packets*all times listed for 68 F (20 C) consult data sheet for more informationJM PMMA Flashing Resin - Summer GradeAmbientTemperatureCatalystPot Life*Rain Proof*Next Layer*Fully Cured*Catalyst per 12 kg unit50 F - 68 F68 F - 95 F(10 C - 20 C)(20 C - 35 C)5 (0.1 kg) packets2.5 (0.1 kg) packets15 minutes30 minutes60 minutes3 hours*all times listed for 68 F (20 C) consult data sheet for more informationJM PMMA Flashing Resin - Winter GradeAmbientTemperatureCatalystPot Life*Rain Proof*Next Layer*Fully Cured*Catalyst per 12 kg unit23 F - 37 F37 F - 50 F50 F - 68 F(-5 C - 3 C)(3 C - 10 C)(10 C - 20 C)7 (0.1 kg) packets 5 (0.1 kg) packets 2.5 (0.1 kg) packets20 minutes45 minutes60 minutes6 hours*all times listed for 68 F (20 C) consult data sheet for more information4

JM PMMA Liquid MembraneLiquids Application Guide3.2 Liquid Flashing Primer InstallationThe JM PMMA Primer is a semi-flexible combination primer used in details andflashings as primer/sealer pretreatment for concrete, masonry, wood, and asphaltand other substrates as required.ApplicationAfter mixing with catalyst, apply primer to clean and prepared substrate at therequired consumption using approved rollers or brushes. The resin should be spreadevenly onto the surface and allowed to fully cure before continuing work.Typical Coverage RatesSmooth Substrates0.037 kg/ft2 (0.40 kg/m2)Fine Grained Substrates0.046 kg/ft2 (0.50 kg/m2)Rough Substrates0.074 kg/ft2 (0.80 kg/m2)Gross yield per 1-kg unit is approximately 13.5 ft (1.25 m2) to 26.9 ft2 (2.5 m2). Yields will vary dependingupon the smoothness and absorbency of substrate.2The clean and fully cured primer can be coated after a minimum of approximately30-45 minutes up to a maximum of 6-months. If the surface of the primer becomesdirty or contaminated or left exposed to the elements for more than 12-hours,thoroughly clean the in-place and cured primer with JM PMMA Cleaner. JMPMMA Cleaner should be allowed a minimum of 20-minutes evaporation time afterapplication, and over-coated within 60-minutes of application.JM PMMA Metal PrimerThe JM PMMA Metal Primer serves as a primer for a JM PMMA system. It promotesadhesion for various metal substrates, including drain bowls and edge metal. Prior toapplication, all substrates must be clean, dry, free of oil, grease, foreign material suchas dirt, ice, snow, water or any other condition that would be detrimental to adhesionof resin to the substrate. A grinder is required to abrade the metal - using a wire brushwill create a polished finished and inhibit adhesion. The JM PMMA Metal Primer mustbe stirred prior to use. After mixing, apply resin to clean and prepared substrate at therequired consumption using approved rollers or brushes. The resin should be spreadevenly onto the surface. Typical coverage rates are 250 ft2/gal (23.2 m2/gal).Typical Cure Times 68 F (20 C): at least 4-hours 50 F (10 C): at least 6-hoursMaximum re-coat time: 48 hoursThe times noted above are approximate, provided as a guideline, and may vary. Actual set times and cure should beestablished in the field based on actual field conditions.3.3 Liquid Flashing Membrane InstallationJM PMMA Flashing resin is combined with catalyst and JM PMMA Fleecereinforcement to form a monolithic, self-adhering and self-terminating reinforcedflashing membrane for a variety of new construction and re-roof applications.ApplicationStep 1: After mixing, apply resin tosubstrate at a rate of 0.14 to 0.31 kg/ft2(1.5 to 3.3 kg/m2) using approved rollers orbrushes. The JM PMMA Flashing Resinshould be spread evenly onto the surface.5

JM PMMA Liquid MembraneLiquids Application GuideStep 2: Roll JM PMMA Fleece reinforcement directly into the resin, avoiding any foldsand wrinkles. Use a roller to work the resin into the fleece, saturating from the bottomup. The fleece should darken in appearance, with no white spots (white spots areindications of unsaturated fleece or lack of adhesion) showing. When required peelback fleece and apply additional resin onto the substrate, then slowly roll the fleeceback into the resin, using care to remove any air pockets. It is important to correctthese faults before the resin cures, or additional repairs may be required later.Step 3: Apply an even coat of resin over topof the in-place fleece at a rate of 0.09 kg/ft2 (1.0 kg/m2) using approved rollers. Usecaution not to spread resin too thin.Coverage Rates (approximate)Smooth Substrates0.28 kg/ft2 (3.0 kg/m2)Normal Substrates0.31 kg/ft2 (3.3 kg/m2)Fine Grained Substrates0.36 kg/ft2 (3.8 kg/m2)Rough Substrates0.40 kg/ft2 (4.3 kg/m2)Gross yield per 1-kg unit is approximately 2.5 ft2 (0.23 m2) to 4.3 ft2 (0.40 m2). Yields will vary depending upon the smoothnessof substrate.Side and End LapsAll side laps and end laps of scrim must be a minimum of 4” (102 mm) overlap with anapplication of liquid membrane installed between the lap surfaces.Penetration Flashing InstallationJM PMMA Flashing resin is combined with catalyst and JM PMMA Fleecereinforcement to form a monolithic, self-adhering and self-terminating reinforcedpenetration flashing membrane for a wide variety of penetrations.1. Abrade & Clean the substrate62. Mask & Cut the Scrim

JM PMMA Liquid MembraneLiquids Application Guide3. Apply Primer4. Spread the Activated Mixed ResinObtain a full coating, without voids, at arate of 0.14 to 0.31 kg/ft2 (or 60 mils thick).5. Apply the ScrimImmediately roll the JM PMMA Scrim intothis layer while it is still wet.6. CoatUse a roller brush to work the activatedmix resin into the scrim and the horizontaltarget patch saturating from the bottom up.Note: The liquid membrane should extend 1/4” past the scrimin all directions.7. After applying the 7” x 7” target over thefingers in the field and applying the top ofthe PMMA, remove masking & let cure.JM PMMA DetailerThe JM PMMA Detailer is combined with JM PMMA Catalyst to form a rapid-curing,flexible resin containing chopped fiber reinforcement. It is used in areas wherefabric reinforced membranes would be difficult to install.After properly mixing with catalyst, apply resin to clean and prepared substrate atthe required consumption using a trowel, or brush. The resin should be spread evenlyonto the surface at a minimum consumption between 0.23 kg/ft2 (2.5 kg/m2) to 0.37 kg/ft2(4.0 kg/m2) achieving an approximate 80 - 125 mils (0.08” - 0.125”) depth respectively.After troweling the resin in place finish the surface by smoothing out with anapproved roller or brush. Typical coverage rates are 5-8 ft2/kg.3.4 Liquid Flashing Membrane SurfacingThe flashing membrane may be surfaced similar to the liquid membrane with JMPMMA Top Coat or a variety of surfacings. Follow the instructions described in section3.4 with the following exception. The JM PMMA Top Coat should be mixed with amaximum of 2% of the JM PMMA Thixo to prepare it for use on vertical surfacings. An8.5kg container of JM PMMA Top Coat would require 200g (0.2kg) of JM PMMA Thixo.7

JM PMMA Liquid MembraneLiquids Application GuideBegin by thoroughly mixing the entire drum of the top coat for 2-3 minutes before use.Add JM PMMA Thixo to the resin component, stir for 2 minutes using a slow-speedmechanical agitator. Allow resin to stand approximately 20 minutes before use. Thenapply the JM PMMA Top Coat as you would the JM PMMA Flashing Resin using anapproved roller or brush.4.0 Liquid Membrane InstallationThe JM PMMA membrane system is comprised of a primer, waterproofing resin andfleece reinforcement, as well as an optional surfacing. Following are instructionsregarding the mixing, measuring and application of the membrane system components.4.1 Liquid Membrane Mixing InstructionsThe amount of JM PMMA Catalyst added to JM PMMA resins and primers variesbased on the resin type, resin quantity and temperature. Each resin has differentdensities, so the volume of each resin will vary slightly for the same weight of measure.JM recommends using a scale to measure each resin component and catalyst whenbatch mixing.For all resins, thoroughly mix the entire container of resin for 2-3 minutes before eachuse, and prior to pouring off resin into a second container if batch mixing. Catalyzeonly the amount of material that can be used within 10-15 minutes. Add pre-measuredcatalyst to the resin component, stir for 2-minutes using a slow-speed mechanicalagitator (200 - 400 rpm) or stirring stick and apply to substrate. The amount of catalystadded is based on the weight of the resin used. When a scale is not available, thefollowing chart provides the density and approximate liquid measure for JM PMMAresin components:Density(g/cm3)JM PMMA ProductAll Density data was taken directly from supplier data sheetsJM PMMA PrimerJM PMMA Repair PasteJM PMMA Resin - Summer GradeJM PMMA Resin - Winter GradeJM PMMA Top CoatJM PMMA Textured TOP Coat1.221.301.211.211.201.80Liquid 831.210.831.200.561.80The following charts can be used to calculate catalyst quantity and approximateworking times:JM PMMA Primer - All PurposeAmbientTemperatureCatalystCoverageAmbient Temperature RangeSurface Temperature RangePaste Temperature RangePot Life*Rain Proof*Next Layer*Fully Cured*Catalyst per 10 kg unit32 F - 49 F50 F - 68 F(0 C - 10 C)(10 C - 20 C)6 (0.6 kg) packets 4 (0.4 kg) packets269 ft2 (25 m2)32 F - 95 F (0 C - 35 C)32 F - 122 F (0 C - 50 C)37 F - 86 F (3 C - 30 C)15 minutes30 minutes30 minutes2 hours*all times listed for 68 F (20 C) consult data sheet for more information869 F - 95 F(20 C - 35 C)2 (0.2 kg) packets

JM PMMA Liquid MembraneLiquids Application GuideJM PMMA Repair PasteAmbientTemperatureCatalystCatalyst per 15 kg unit32 F - 49 F50 F - 68 F(0 C - 10 C)(10 C - 20 C)9 (0.9 kg) packets 6 (0.6 kg) packetsAmbient Temperature RangeSurface Temperature RangePaste Temperature RangePot Life*Rain Proof*Next Layer*Fully Cured*69 F - 95 F(20 C - 35 C)3 (0.3 kg) packets32 F - 95 F (0 C - 35 C)32 F - 122 F (0 C - 50 C)37 F - 86 F (3 C - 30 C)20 minutes30 minutes60 minutes3 hours*all times listed for 68 F (20 C) consult data sheet for more informationJM PMMA Field Resin - Summer GradeAmbientTemperatureCatalystCoverageCatalyst per 20 kg unit50 F - 68 F68 F - 95 F(10 C - 20 C)(20 C - 35 C)8 (0.1 kg) packets4 (0.1 kg) packets70 ft2 (6.5 m2) per 20kg bucketAmbient Temperature RangeSurface Temperature RangeResin Temperature RangePot Life*Rain Proof*Next Layer*Fully Cured*50 F - 95 F (10 C - 35 C)50 F - 122 F (10 C - 50 C)50 F - 86 F (10 C - 30 C)15 minutes30 minutes60 minutes3 hours*all times listed for 68 F (20 C) consult data sheet for more informationJM PMMA Field Resin - Winter GradeAmbientTemperatureCatalystCoverageAmbient Temperature RangeSurface Temperature RangePaste Temperature RangePot Life*Rain Proof*Next Layer*Fully Cured*Catalyst per 20 kg unit23 F - 37 F37 F - 50 F50 F - 68 F(-5 C - 3 C)(3 C - 10 C)(10 C - 20 C)12 (0.1 kg) packets 8 (0.1 kg) packets 4 (0.1 kg) packets70 ft2 (6.5 m2) per 20kg bucket23 F - 68 F (-5 C - 20 C)23 F - 68 F (-5 C - 20 C)37 F - 86 F (3 C - 30 C)20 minutes45 minutes60 minutes6 hours*all times listed for 68 F (20 C) consult data sheet for more information9

JM PMMA Liquid MembraneLiquids Application GuideJM PMMA Top Coat (Combine with JM PMMA 1.5kg color pack)AmbientTemperatureCatalystAmbient Temperature RangeSurface Temperature RangePaste Temperature RangePot Life*Rain Proof*Next Layer*Fully Cured*Catalyst per 8.5 kg unit32 F - 50 F50 F - 68 F(0 C - 10 C)(10 C - 20 C)6 (0.6 kg) packets 4 (0.4 kg) packets68 F - 95 F(20 C - 35 C)2 (0.2 kg) packets32 F - 95 F (0 C - 35 C)32 F - 122 F (0 C - 50 C)37 F - 86 F (3 C - 30 C)15 minutes30 minutes60 minutes3 hours*all times listed for 68 F (20 C) consult data sheet for more informationJM PMMA Textured Top Coat (Combine with JM PMMA 1.5kg color pack)AmbientTemperatureCatalystAmbient Temperature RangeSurface Temperature RangePaste Temperature RangePot Life*Rain Proof*Next Layer*Fully Cured*Catalyst per 13.5 kg unit32 F - 50 F50 F - 68 F(0 C - 10 C)(10 C - 20 C)9 (0.9 kg) packets 6 (0.6 kg) packets68 F - 95 F(20 C - 35 C)3 (0.3 kg) packets32 F - 95 F (0 C - 35 C)32 F - 122 F (0 C - 50 C)37 F - 86 F (3 C - 30 C)15 minutes45 minutes60 minutes3 hours*all times listed for 68 F (20 C) consult data sheet for more information4.2 Primer InstallationAfter mixing the catalyst with the JM PMMA Primer, apply the primer to the cleanand prepared substrate by spreading evenly on the substrate with an approved rolleror brush to obtain a full coverage coating, without voids at a rate consistent with thecoverage provided on the product data sheet. Typical coverage rates are as follows:JM PMMA PrimerSmooth substratesFine grained substratesRough substratesTypical coverage rate0.037 kg/ft2 (0.40 kg/m2)0.046 kg/ft2 (0.50 kg/m2)0.074 kg/ft2 (0.80 kg/m2)25ft2/kg - 30ft2/kgThe clean and fully cured primer can be coated with the JM PMMA Resin aftera minimum of approximately 30-45 minutes up to a maximum of 6-months. If thesurface of the primer becomes dirty or contaminated or left exposed to the elementsfor more than 12-hours, thoroughly clean the in-place and cured primer with JMPMMA Cleaner. The JM PMMA Cleaner should be allowed a minimum of 20-minutesevaporation time after application, and over-coated within 60-minutes of application.Board Joints and SeamsIf the JM PMMA Liquid Membrane System is being installed over cement board,the joints of the boards need to be covered with JM PMMA Repair Paste or stripsof membrane according to the guidelines listed in Section 2, Specific SubstratePreparation. To install the JM PMMA Repair Paste, begin by properly mixing thepaste with catalyst. After mixing, apply the paste to clean and prepared substrate at10

JM PMMA Liquid MembraneLiquids Application Guidethe required consumption using a trowel and/or brush. The paste should be spreadevenly onto the surface at a recommended consumption of approximately 0.19 kg/ft2(2.0 kg/m2) for each /-1/32” (1 mm) of depth. After troweling the resin in place finishthe surface by smoothing out with an approved roller or brush. This product can alsobe used to prepare the substrate for the JM PMMA Liquid Membrane System asdescribed in Section 2, Roof Preparation. The same application procedure should beused except where specifically described in Section 2.OPTION 1:Joint compound applies more simply;just spread over the seam, filling it.1. Joint CompoundOR OPTION 2:With liquid roofing, measure and cutthe scrim to cover the seam. Spreadliquid roofing on the seam; then workthe scrim into the liquid. Aim for a full,void-free coating: 0.21 to 0.45 kg/ft2(approx. 90 mils thick).1. Measure & Cut the Scrim2. Spread the Liquid RoofingObtain a full coating, without voids, at arate of 0.14 to 0.31 kg/ft2 (or 60 mils thick).3. Work the Scrim into the LiquidThen, obtain a full coating, without voids,at a rate of 0.09 kg/ft2 (or 30 mils thick).4.3 Liquid Membrane InstallationOnce the primer has been fully cured and the JM PMMA Resin has been properlymixed with catalyst, spread evenly on the substrate with an approved roller, brush ornotched squeegee to obtain a full coverage coating, without voids at a rate of 0.14 to0.31 kg/ft2 (1.5 to 3.3 kg/m2). Immediately roll the JM PMMA Scrim into this layer whilestill wet. Use a roller to work the resin into the fleece, saturating from the bottom up,and apply a supplemental coat of resin as needed directly over the fleece. Note thefleece should darken in appearance, with no white spots showing. White spots areindications of unsaturated fleece or lack of adhesion. It is important to correct thesefaults before the resin cures. Apply an even coat of resin over top of the in-place fleeceat a rate of 0.09 kg/ft2 (1.0 kg/m2) using approved rollers. Use caution not to spreadresin too thin. The liquid membrane should extend 2” (51 mm) past the scrim in all11

JM PMMA Liquid MembraneLiquids Application Guidedirections. Allow an additional 1-3 hours before foot traffic. If a surfacing is to be added,the JM PMMA Resin should be allowed to cure for a minimum of one hour prior to theapplication of the surfacing.1. Spread the Activated Mixed ResinSpread resin evenly on the substrate withan approved roller or brush to obtain a fullcoating, without voids, at a rate of 0.14 to0.31 kg/ft2 (or 60 mils thick).2. Apply the ScrimImmediately roll the JM PMMA Scrim intothis layer while it is still wet.3. Work the Scrim into the LiquidUse a roller to work the activated mixedresin into the scrim, saturating from thebottom up. Apply a supplemental coat ofresin as needed.4. CoatApply an even coat of the activated mixedresin over the top of the in-place scrim ata rate of 0.09 kg/ft2 (or 30 mils thick) usingapproved rollers. Use caution not to spreadresin too thin.Note: The scrim should darken, without white spotsshowing. These spots are indications of unsaturatedscrim or lack of adhesion. It is important to correct thesebefore the resin cures.Note: The liquid membrane should extend 1/4” past thescrim in all directions.Side and End LapsAll side laps and end laps of scrim must be a minimum of 4” (102 mm) overlap with anapplication of liquid membrane installed between the lap surfaces.JointsShould the liquid membrane system not be able to be installed over the entire roofarea in one day, the joint line left at the work stopping point must be clean and straightwith the primer extending beyond the resin. When work resumes, wipe the area to bebonded with JM PMMA Cleaner prior to the application of the fresh JM PMMA Resin.4.4 Surfacing InstallationAfter the JM PMMA Liquid Membrane has fully cured, multiple surfacing options canbe installed.JM PMMA Top CoatJM PMMA Top Coat should be applied within 12-hours of the JM PMMAmembrane application whenever possible. After properly mixing and catalyzing, applyJM PMMA Top Coat to clean and prepared substrate at the required consumptionusing approved rollers, brushes or squeegee. On large areas, the resin should bespread evenly onto the surface using a squeegee and back-rolled to remove puddles.12

JM PMMA Liquid MembraneLiquids Application GuideTypical coverage rates are 15 - 20 ft2/kg. If an aggregate is to be installed with theJM PMMA Top Coat, see specific manufacturing guidelines for installation. The typicalcoverage rates when applied with aggregates are as follows:Application0.4 – 0.8mm aggregate0.7 – 1.2mm aggregateConsumption0.06 kg/ft2 (0.7 kg/m2)0.07 kg/ft2 (0.8 kg/m2)Please note that yields will vary depending upon the selected system along with shape, size, smoothness & absorbency ofthe aggregate and substrate.JM PMMA Textured Top CoatTape out the area of work in a checkerboard fashion using d

irregularities, loose, unsound or foreign material such as moss, algae growth, ice, snow, water or any other condition that would inhibit the adhesion of the JM PMMA primer or . grease and loose powder or debris. JM requires removing existing concrete laitance, if present, by the suggested methods listed under New Construction.