GERFLOR RECREATION INSTALLATION INSTRUCTIONS 6 MM BLEACHERBLOK SYSTEM. 4 X 5 VINYL SLABS

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1 GERFLOR RECREATION INSTALLATION INSTRUCTIONS 6 MM BLEACHERBLOK SYSTEM. 4 X 5 VINYL SLABS This document refers to the following products: Product Size Thickness Installation direction Seam treatment Recreation Surface Approximately mm Same Heat Welded BleacherBlok 4 mm 48 x 60 4 mm Stippled side down None Styccobond F49 Acrylic 2 Part 22 lbs. pails Adhesive Gerflor T part Polyurethane USAGE: For areas where bleachers will be installed, we suggest the use of BleacherBlok System 6mm. the system comes in as a 4 mm BleacherBlok and Gerflor Recreation 2.1 mm Surface. The BleacherBlok System 6 mm will resist the point load of bleachers that will often dent any sport surfaces. 1. STANDARDS: The guidelines detailed in this document are based upon industry accepted installation recommendations and reference the following standards: 1.1. ACI 302.1R Guide for Concrete Floor and Slab Construction ACI 302.2R Guide for Concrete Slabs that Receive Moisture-Sensitive Flooring Materials 1.3. ASTM F Standard Practice for Preparing Concrete Floors to Receive Resilient Flooring 1.4. ASTM F Standard Test Method for Measuring Moisture Evaporation Rate of Concrete Subfloor Using Anhydrous Calcium Chloride ASTM F Standard Test Method for Determining Relative Humidity in Concrete Floor Slabs Using In-Situ Probes ASTM F Standard Practice for Sealing Seams of Resilient Flooring by the Heat Weld Method ASTM F Standard Practice for Installation and Preparation of Panel Type Underlayments to Receive Resilient Flooring 1.8. ASTM F Standard Practice for Installation of Thick Poured Gypsum Concrete Underlayments and Preparation of the Surface to Receive Resilient Flooring 1.9. ASTM F Standard Practice for Preparing Panel Underlayments, Thick Poured Gypsum Concrete Underlayments, Thick Poured Lightweight Cellular Concrete Underlayments, and Concrete Subfloors with Underlayment Patching Compound ASTM F Standard Practice for the Installation of Self-Leveling Underlayment and the Preparation of Surface to Receive Resilient Flooring ASTM F Standard Practice for Two-Component Resin Based Membrane-Forming Moisture Mitigation Systems for Use Under Resilient Floor Coverings F Standard Practice for Field Determination of Substrate Water Absorption (Porosity) for Substrates to Receive Resilient Flooring Recommended Work Practices for Removal of Resilient Floor Coverings of Resilient Floor Covering Institute (RFCI). Gerflor Recreation & BleacherBlok Installation Instructions USA.docx 1/13

2 2. GENERAL INFORMATION 2.1. Gerflor Recreation BleacherBlok system is formulated to withstand high moisture conditions. To perform as designed, the concrete must be properly prepared to create a contaminate free and porous substrate The Gerflor Recreation BleacherBlok system is not designed to withstand hydrostatic or osmotic pressure The guidelines offered within this document are not intended to be all inclusive. Only qualified, professional flooring technicians experienced in the field of resilient flooring should proceed with this installation system It is recommended to mechanically prepare the concrete via grinding or bead blasting the surface to achieve a clean and porous substrate Moisture and ph testing must be performed in accordance with ASTM F Where patching is required to correct minor subfloor deviations/deficiencies use only GerPatch If a self-leveling material is required to achieve a flat, smooth and/or level surface, the use of a moisture tolerant, cementitious product that meets ASTM F is required Do not install material that has visible defects or damage. A contractor that installs material that has visible defects or damage assumes responsibility for the damaged material. 3. STORAGE AND HANDLING 3.1. Rolls may be shipped laying down. If shipped in this manner, place them in an upright position on a clean, flat, solid surface in an interior, controlled space. Do not store rolls laying down for extended periods Store BleacherBlok 4 mm on clean, flat, and solid surfaces in a controlled environment. Stack not more than 3 ft. high Store rolls of Surface on clean, flat, and solid surfaces in a controlled environment. Place rolls in an upright position. Do not stack rolls on top of each other Displaced material on a skid or a broken skid will damage the BleacherBlok 4 mm and could leave marks and dents in the material that won t be repairable If the material will be stored for an extended period, remove the rolls from the skids and secure them upright as detailed above. Rolls that are displaced due to a broken skid or left on their side for an extended period will damage the flooring Caution should be used in the moving and lifting of rolls. Allow for appropriate equipment and manpower to safely move materials. Work safe and always follow the relevant safety protocols for the activity you are engaged in Do not store any material outdoor. 4. JOB SITE CONDITIONS 4.1. The rolls, BleacherBlok and adhesive must be acclimated in the installation area for 24 hours prior to installation. Allow additional acclimation time if the flooring has been exposed to excessive cold or hot temperatures for an extended period The concrete floor temperature shall be a minimum of 65 F before laying out the BleacherBlok and the rolls. Gerflor Recreation & BleacherBlok Installation Instructions USA.docx 2/13

3 4.3. Areas to receive flooring must be fully enclosed with the permanent HVAC system operational and set to a minimum of 65 F or a maximum of 85 F for a minimum of 48 hours prior to, during, and then maintained after the installation Prepare substrate in accordance with ASTM F Standard Practice for Preparing Concrete Floors to Receive Resilient Flooring. Floors should be smooth, permanently dry, clean and free of all foreign materials such as dust, wax, solvents, paint, grease, oils, old adhesive residue, curing compounds and sealers Areas to receive flooring should have adequate lighting during all phases of the installation Installation should not begin until all trades; painting, ductwork, drywall, etc. are complete. Once the installation begins, the area must be secured from all other trades and foot traffic. 5. SUBFLOORS CONCRETE 5.1. The concrete must have been placed in accordance with ACI 302.1R Guide for Concrete Floor and Slab Construction and ACI 302.2R Guide for Concrete Slabs that Receive Moisture-Sensitive Flooring Materials Allow concrete to cure for a minimum of twenty-eight (28) days The slab flatness will have a tolerance of 1/8 in a 10 maximum plane variation Before proceeding with any work, inspect the subfloor surface and report in writing to the Project Manager and the General Contractor any visible defects on the surface such as cracks, bumps, rough areas or variations in flatness Check the subfloor for grease, oil, paint, marker, spills, dust or any contamination that may adversely affect the adhesion of the flooring. Mechanically clean the subfloor per the existing conditions. Petroleum products such as cutting oils and hydraulic fluid will penetrate the concrete and become a bond breaker. Areas affected by these oils must be bead-blasted to remove all contaminated concrete Mechanically remove any existing adhesive residues, paint over spray, sweeping compounds, dirt, debris or anything that may act as a bond breaker from the surface of the concrete. Where concrete sealers or curing compounds are present they must be completely, mechanically removed via grinding, bead-blasting, Diamabrush or similar. Sanding is not sufficient to completely remove curing compounds The concrete slab, new or old, must be tested for moisture. We recommend having the tests performed by a recognized engineering firm. The ICRI website (International Concrete Repair Institute) has a list of certified technicians for the USA: The moisture tests must be performed as per ASTM F Standard Test Method for Measuring Moisture Evaporation Rate of Concrete Subfloor Using Anhydrous Calcium Chloride and/or ASTM F Standard Test Method for Determining Relative Humidity in Concrete Floor Slabs Using In-Situ Probes Where the concrete has been hard-troweled to create a burnished finish, porosity should be determined through the water drop test as detailed in ASTM F Standard Practice for Field Determination of Substrate Water Absorption (Porosity) for Substrates to Receive Resilient Flooring To minimize the potential for telegraphing, all dormant or non-moving cracks should be repaired with a rigid, two-component, polyurethane crack injection product. Moving joints such as expansion or isolation joints must be honored up through the installation in accordance with ASTM F Gerflor Recreation & BleacherBlok Installation Instructions USA.docx 3/13

4 5.11. The moisture tests must be performed as per ASTM F Standard Test Method for Measuring Moisture Evaporation Rate of Concrete Subfloor Using Anhydrous Calcium Chloride and/or ASTM F Standard Test Method for Determining Relative Humidity in Concrete Floor Slabs Using In-Situ Probes Where the concrete has been hard-troweled to create a burnished finish, porosity should be determined through the water drop test as detailed in ASTM F Standard Practice for Field Determination of Substrate Water Absorption (Porosity) for Substrates to Receive Resilient Flooring Substrate moisture and ph levels shall not exceed: Sweep and vacuum the area following mechanical preparation to remove all dust and debris Where patching is required to correct minor subfloor deviations/deficiencies use only GerPatch and allow to cure from 4 to 24 hours depending on the type of adhesive used. Sand if necessary to smooth. If the use of a moisture tolerant, cementitious self-leveler is required, it must meet ASTM F Refer to ASTM F for additional considerations on concrete substrates that are to receive resilient floor coverings. 6. SUBFLOORS CONCRETE WITH RADIANT HEATING SYSTEMS 6.1. Do not install Gerflor Recreation BleacherBlok system over a radiant heating system as this could affect the performance of the heating system over time. 7. SUBFLOORS GYPSUM BASE SUBSTRATE 7.1. Prohibit circulation of other trades in the installation area The General Contractor shall patch and repair all cracks, voids and other imperfections of the gypsum base subfloor with high strength gypsum base patching compounds compatible with the gypsum base product After completion of patching and leveling, vacuum or sweep entire surface of the gypsum base subfloor to remove loose dust and dirt Apply an acrylic base primer per the manufacturer s instructions Once the Primer has set, install the flooring following the installation instructions 7.6. Do not use Gerflor T-111 polyurethane adhesive over this type of substrate. Refer to Gerflor Technical Service for further instructions 8. SUBFLOORS WOOD Adhesive Concrete slab Size of bleachers Styccobond F49 2-part Acrylic Adhesive ph 6 to 11 / 8-lbs 90% RH 6 rows or less Gerflor T part P.U. Adhesive ph 6 to 11 / 8-lbs 85% RH 7-rows and more 8.1. Do not install over OSB, particle board, chipboard, lauan or composite type underlayments Wood subfloors must have a minimum of 18 of cross-ventilation space between the bottom of the joist and the ground Any exposed earth crawl space must be sealed with a polyethylene moisture barrier Wood subfloors must meet local and national building codes, trade associations (e.g. The APA The Engineered Wood Association) that offers guidelines to meet the building codes. Gerflor Recreation & BleacherBlok Installation Instructions USA.docx 4/13

5 8.5. Always refer to ASTM F Standard Practice for Installation and Preparation of Panel Type Underlayments to Receive Resilient Flooring Any subfloor that has a single layer must be covered with a ¼ or more of APA approved underlayment plywood to achieve a total thickness of 1 inch minimum. 9. SUBFLOOR PREPARATION 9.1. The General Contractor will supply a smooth, flat concrete finish ready to receive the new resilient sheet flooring in accordance with ACI 302.1R Guide for Concrete Floor and Slab Construction and ACI 302.2R Guide for Concrete Slabs that Receive Moisture-Sensitive Flooring Materials The concrete subfloor will be cured for a minimum of at least thirty (30) days The slab flatness will have a tolerance of 1/8 in a 10 maximum plane variation Prepare substrate as per ASTM F Standard Practice for Preparing Concrete Floors to Receive Resilient Flooring The concrete floor temperature must to be maintained at a minimum of 65 F for 48 hours prior, during, and 48 hours after the installation The concrete slab, new or old, must be tested for moisture. We recommend having the tests performed by a recognized engineering firm. The ICRI website (International Concrete Repair Institute) has a list of certified technicians for the USA: The moisture tests must be performed as per ASTM F Standard Test Method for Measuring Moisture Evaporation Rate of Concrete Subfloor Using Anhydrous Calcium Chloride and/or ASTM F Standard Test Method for Determining Relative Humidity in Concrete Floor Slabs Using In-Situ Probes Substrate moisture levels shall not exceed: Adhesive Concrete slab Size of bleachers Styccobond F49 2-part Acrylic Adhesive ph 6 to 11 / 8-lbs 90% RH 6 rows or less Gerflor T part P.U. Adhesive ph 6 to 11 / 8-lbs 85% RH 7-rows and more 9.9. Prohibit circulation of other trades in the installation area Before proceeding with any work, inspect the subfloor surface and report in writing to the Project Manager and the General Contractor any visible defects on the surface such as cracks, bumps, rough areas or variations in evenness Check the subfloor for grease, oil, paint, marker, spills, dust or any contamination that may adversely affect the adhesion of the flooring. Clean the subfloor per the existing conditions Prohibit circulation of other trades in the installation area Sanding of the subfloor will be mandatory in many cases; especially in areas where the subfloor has been contaminated with foreign products. It may be necessary to scarify or bead-blast concrete surface to remove existing adhesives, paint, concrete sealers or other surface applied materials Curing compounds of all types must be completely removed by means of sanding, scarification or bead-blasting. Self-dissipative curing compounds must be removed using the same methods The General Contractor shall patch and repair all cracks, voids and other imperfections of concrete with GerPatch patching compound. Do not use gypsum-based patching materials. Gerflor Recreation & BleacherBlok Installation Instructions USA.docx 5/13

6 9.16. After completion of sanding, patching and leveling, vacuum or sweep entire surface of concrete to remove loose dust and dirt before starting the installation of material. 10. ACCLIMATION The rolls and adhesive must be acclimated in the installation area for 24 hours prior to installation. Allow additional acclimation time if the flooring has been exposed to excessive cold or hot temperatures for an extended period The concrete floor temperature shall be a minimum of 65 F before laying out rolls Areas to receive flooring must be fully enclosed with the permanent HVAC system operational and set to a minimum of 65 F or a maximum of 85 F for a minimum of 48 hours prior to, during, and then maintained after the installation Keep the identification tags of each roll and verify that the rolls are being installed in the same direction and in sequential order Unroll flooring following the roll number sequence Mark a control/starting line. Unroll the first roll along this line Unroll successive rolls leaving a minimum ¼ gap left between sheets Allow material to relax overnight before proceeding with the installation. 11. DRY LAY OF BLEACHERBLOK 4 MM Installation temperature shall be at least 65 F maintained for 48 hours prior to during and 72 hours after installation BleacherBlok 4 mm must be dry laid to allow for proper acclimation Mark the center starting line and a 90º line Trace a second line at 2 6 form the other one so the pieces can be staggered Start installing at the intersection of those 2 lines Make sure that the seams of the BleacherBlok 4 mm and the seams of Surface are not on top of each other. 12. INSPECTION OF BLEACHERBLOK 4 MM Inspect BleacherBlok 4 mm carefully to verify the thickness, quality and quantities have been shipped as ordered A contractor that installs material that has visible defects or damage without prior consent of Gerflor deems the product acceptable for installation and therefore accepts full responsibility for said material. IMPORTANT: INSTALL THE BLEACHERBLOK 4 MM STIPPLED FACE DOWN SO IT WILL BE IN CONTACT WITH THE CONCRETE SLAB Since the BleacherBlok System requires the use of a 2-part polyurethane adhesive, we recommend installing the BleacherBlok 4 mm first, then the Sport M Plus in the playing area and finally the Surface on the BleacherBlok to match the planks alignment as much as possible Treat the seams between the BleacherBlok System and the Sport M Plus the same as regular seams to be heat welded. IMPORTANT NOTICE: IF YOU ARE NOT FAMILIAR WITH THIS TYPE OF INSTALLATION OR THE USE OF A 2-PART ADHESIVE, CONTACT GERFLOR TECHNICAL SERVICES: GERFLOR Gerflor Recreation & BleacherBlok Installation Instructions USA.docx 6/13

7 13. STYCCOBOND F49 2-PART ACRLIC ADHESIVE METHOD TO INSTALL BLEACHERBLOK 4 MM Use only Styccobond F49 2 Part Acrylic adhesive where recommended. CAUTION: Styccobond F49 2-part adhesive can be use on BleacherBlok where the bleacher are no more than 6 tiers high. For larger bleachers, use Gerflor T Respect the guidelines indicated on the pail of adhesive The recommended trowel size to install BleacherBlok 4 mm is 1/32 x 1/16 x 5/64 U notch, covering from sq. ft. per 22 lbs. pails Mix acrylic adhesive part A and part B as recommended by the adhesive manufacturer Installers must be familiar with the use of this type of adhesives Starting from the center line and working outward and apply the adhesive to the subfloor To ensure uniform adhesion of the entire surface, only spread a workable amount of adhesive at one time Maintain a uniform spread rate. Replace trowel (or trowel blade) with every pail used The adhesive must flash-off 20 to 40 minutes prior to installing the tiles into the adhesive. The adhesive must not transfer to the touch Once BleacherBlok 4 mm is placed into the adhesive, immediately roll thoroughly with a 3 section 100-lbs roller in both directions. Note: Use a 14 to 16 cork board or a piece of 2 x 4 wrapped with a piece of carpet to remove air bubbles During the installation, always double check the flooring for bubbles with portable or fixed lighting Fill any gapped seams with the T-111 adhesive Wait that the adhesive has set overnight before installing the Surface over the BleacherBlok 4 mm Next morning, verify for any smudges of adhesive or lippage at the seams and using a hand belt sander, sand down where needed to obtain a smooth surface for the next step REMINDER: INSTALL BLEACHERBLOK 4 MM STIPPLED FACE DOWN. WARNING: VERIFY THAT THE SEAMS OF THE BLEACHERBLOK 4 MM ARE PROPERLY ADJUSTED AND LEVELED. ANY DIFFERENCE IN HEIGHT AND SMOOTHNESS OF THE INSTALLED BLEACHERBLOK 4 MM WILL VISIBLY TELEGRAPH THROUGH THE SURFACE. 14. GERFLOR T-111 POLYURETHANE ADHESIVE METHOD TO INSTALL BLEACHERBLOK 4 MM Use only a Gerflor T-111 polyurethane adhesive where recommended Respect the guidelines indicated on the pail of adhesive The recommended trowel size to install Surface over BleacherBlok 4 mm is 1/32 x 1/16 x 1/32 U notch, covering from sq. ft. per US gallon Mix polyurethane adhesive part A and part B as recommended by the adhesive manufacturer Installers must be familiar with the use of polyurethane adhesives. Gerflor Recreation & BleacherBlok Installation Instructions USA.docx 7/13

8 14.6. Starting from the center line and working outward and apply the adhesive to the subfloor To ensure uniform adhesion of the entire surface, only spread a workable amount of adhesive at one time Maintain a uniform spread rate. Replace trowel (or trowel blade) with every pail used The adhesive has no flash-off time. Immediately install the BleacherBlok 4 mm into the wet adhesive Once BleacherBlok 4 mm is placed into the adhesive, immediately roll thoroughly with a 3 section 100-lbs roller in both directions. Note: Use a 14 to 16 cork board or a piece of 2 x 4 wrapped with a piece of carpet to remove air bubbles During the installation, always double check the flooring for bubbles with portable or fixed lighting Wait that the adhesive has set overnight before installing the Surface over the BleacherBlok 4 mm Next morning, verify for any smudges of adhesive or lippage at the seams and using a hand belt sander, sand down where needed to obtain a smooth surface for the next step. 15. GERFLOR RECREATION SURFACE INSPECTION Inspect Gerflor Recreation Surface Sheets to verify that correct colors, patterns, and quality have been shipped. Do not cut, install, or fit any material that has visible defects. Minor edge damage or distortion should be trimmed prior to installation of the sheets A contractor that installs material that has visible defects or damage without prior consent of Gerflor deems the product acceptable for installation and therefore accepts full responsibility for said material. 16. DRY LAY OF SURFACE SHEETGOODS Note: When installing BleacherBlok System side by side to Sport M Plus, adjust the seams as the other seams in the Sport M Plus Installation temperature shall be at least 65 F maintained for 48 hours prior to during and 48 hours after installation Mark the center starting line Unroll the first length of material along this chalk line and then work progressively outward, leaving a 1/4 gap between the sheets to allow the material to relax for at least hours Seaming should be kept to a minimum and avoid cross seams as much as possible. Place seams in areas exposed to the least amount of traffic The seams of the Surface sheet good cannot sit on top of the seams of the BleacherBlok 4 mm. they have to be staggered by at least Before applying the adhesive, bring the loose sheets close together leaving a gap of 1/ The 1/32 gap is the space needed to groove the flooring for heat welding. This gap must be constant in width. Gerflor Recreation & BleacherBlok Installation Instructions USA.docx 8/13

9 17. INSTALL GERFLOR RECREATION SURFACE TO BLEACHERBLOK 4 MM USING STYCCOBOND 2-PART ACRYLIC ADHESIVE (Use this method with bleachers that are up to 6 tiers) CAUTION: Styccobond F49 2-part adhesive can be use on BleacherBlok where the bleacher are no more than 6 tiers high. For larger bleachers, use Gerflor T Use only Styccobond F49 2 Part Acrylic adhesive where recommended Respect the guidelines indicated on the pail of adhesive The recommended trowel size to install BleacherBlok 4 mm is 1/32 x 1/16 x 5/64 U notch, covering up to 600 sq. ft. per 22- lbs buckets Mix acrylic adhesive part A and part B as recommended by the adhesive manufacturer Installers must be familiar with the use of this type of adhesives Starting from the center line and working outward and apply the adhesive to the subfloor Starting from the center line and working outward, fold the sheets back halfway and apply the adhesive to the subfloor Installer may also use the roll back method. With the roll back method, do not pre-cut material as if to be the final trim. Leave material 2-3 longer for trimming after placement Note: Fold back and roll back methods are preferred to the fold lengthwise method. Some areas will dictate the fold lengthwise method. Rollback method Fold back method To ensure uniform adhesion of the entire surface, only spread a workable amount of adhesive at one time. Maintain a uniform spread rate. Replace trowel (or trowel blade) with every pail used The adhesive must flash-off 20 to 40 minutes prior to installing the tiles into the adhesive. The adhesive must not transfer to the touch While installing, always work to have complete sheets glued at the end of the day To reduce the risk of bubbles, the roll back method is the most recommended By keeping the roll tight and maintaining a constant pressure while unrolling into the adhesive, the risk for bubbles will be minimal The fold back method is acceptable, but care must be taken to not flap it back too quickly Once flooring is placed into the adhesive, immediately roll thoroughly with a 3 section 100-lbs roller in both directions. Note: Use a 14 to 16 cork board or a piece of 2 x 4 wrapped with a piece of carpet to remove air bubbles. Gerflor Recreation & BleacherBlok Installation Instructions USA.docx 9/13

10 Continue laying sheets by keeping the edges spaced 1/32, trimming each side with a straight edge or scribing. The goal is to produce a uniformly 1/32 spaced seam for welding During the installation, always double check the flooring for bubbles with portable or fixed lighting Avoid adhesive displacement by prohibiting traffic for a period of 48 hours and 72 hours for rolling loads. 18. INSTALL SURFACE TO BLEACHERBLOK 4 MM USING GERFLOR T PART POLYURETHANE ADHESIVE Use only a Gerflor T-111 polyurethane adhesive Respect the guidelines indicated on the pail of adhesive The recommended trowel size to install Surface over BleacherBlok 4 mm is 1/32 x 1/16 x 1/32 U notch, covering from sq. ft. per US gallon Mix polyurethane adhesive part A and part B as recommended by the adhesive manufacturer Installers must be familiar with the use of polyurethane adhesives Starting from the center line and working outward, fold the sheets back halfway and apply the adhesive to the subfloor Installer may also use the roll back method. With the roll back method, do not pre-cut material as if to be the final trim. Leave material 2-3 longer for trimming after placement Note: Fold back and roll back methods are preferred to the fold lengthwise method. Some areas will dictate the fold lengthwise method. Rollback method Fold back method To ensure uniform adhesion of the entire surface, only spread a workable amount of adhesive at one time. Maintain a uniform spread rate. Replace trowel (or trowel blade) with every pail used There is no open time with this type of adhesive, the flooring must be applied into the wet adhesive within 20 minutes While installing, always work to have complete sheets glued at the end of the day To reduce the risk of bubbles, the roll back method is the most recommended. Gerflor Recreation & BleacherBlok Installation Instructions USA.docx 10/13

11 By keeping the roll tight and maintaining a constant pressure while unrolling into the adhesive, the risk for bubbles will be minimal The fold back method is acceptable, but care must be taken to not flap it back too quickly Once flooring is placed into the adhesive, immediately roll thoroughly with a 3 section 100-lbs roller in both directions. Note: Use a 14 to 16 cork board or a piece of 2 x 4 wrapped with a piece of carpet to remove air bubbles Continue laying sheets by keeping the edges spaced 1/32, trimming each side with a straight edge or scribing. The goal is to produce a uniformly 1/32 spaced seam for welding During the installation, always double check the flooring for bubbles with portable or fixed lighting Avoid adhesive displacement by prohibiting traffic for a period of 48 hours and 72 hours for rolling loads The use of walking 4 x 8 x ¼ Masonite boards and kneeling boards are mandatory to protect from adhesive displacement during installation. 19. HEAT WELDING GERFLOR RECREATION SURFACE (Refer to our document: Verification of Heat Welded Seams) IMPORTANT NOTE: WAIT 16 TO 24 HOURS AFTER THE INSTALLATION BEFORE WELDING THE FLOORING ROUTING: Use an electric routing machine for major installation such as Leister or equal, approved by manufacturer The Master Turbo Sport Groover is a great tool and is highly recommended to groove our products The Pico groover is a great tool to groove our products The use of a straight edge and hand groover will provide good results for smaller installations. Maintain a uniform width and depth of groove for a uniform welded seam Rout 2/3 of the Surface To weld the seams between Surface and Sport M Plus, rout as the products as described below. Gerflor Recreation & BleacherBlok Installation Instructions USA.docx 11/13

12 For any weld in the Sport M Plus that is NOT welded with Surface, follow the welding instructions as describe in the installation instructions of the Sport M Plus MANUAL WELD: Note: Always practice on a scrap piece of material first to assure proper temperature and speed. Welding tests and adjustment of welder must be done every day there is welding to be done on the job site. Doing so will prevent failures Groove only hours after the installation This must be done with a heat welding gun with variable temperature control and a speed weld nozzle by Leister or equal, approved by manufacturer Turbo Precision Nozzle # 22-3 is highly recommended as well for proper welding Nozzle size is 5 mm as the Romus Rapid Nozzle The use of a non-recommended tip will jeopardize proper welding and could damage the flooring Always keep the tip clean WELDING ROBOT (REQUIRED ON LARGE PROJECT) Note: Always practice on a scrap piece of material first to assure proper temperature and speed. This should be done every day there is welding to do on the job site. Doing so will prevent failures Do not let the robot operate without surveillance Turbo Welding Gun #25 is the recommended welding robot as it comes with the right welding tip. Note: Should another type of welding robot be used, such as Leister robot, care must be taken in the choice of tip as for most cases the opening of the tip is more than 2mm. This could damage the flooring and lead to a seam failure The recommended tip for the Leister Robot is Romus mm. WARNING: Do not weld the flooring using the Leister robot without the proper tip. Notes: Verify not to reduce the power with electrical cords that are too long Frequently verify the weld The ambient temperature, open windows and doors and other electrical equipment plugged in the same electrical outlet may influence proper welding. For any type of installation, do not heat weld resilient flooring for a minimum of 16 to 24 hours after the material has been placed into the adhesive. Gerflor Recreation & BleacherBlok Installation Instructions USA.docx 12/13

13 Refer to ASTM F "Standard Practice for Sealing Seams of Resilient Flooring by the Heat Weld Method" TRIMMING WELDED ROD Note: Trimming is done once the welding rod and material have completely cooled Trimming must be done in two passes The Turbo Plane tool is recommended and will trim in one pass Use trimming tools sharpen in the middle only, such as the Mozart trimmer This type of trimmer will not damage the flooring The first trim must be done with the thickness guide The second trim must be done with the trimmer only Always verify the trimmed weld to ensure that the welding rod is bonded properly and is flush with the top wear layer. 20. ONCE THE INSTALLATION IS COMPLETED Clean the area to verify there are no imperfections, adhesive residue, scuff marks, etc. Verify every welded seam Make sure that the vinyl is well trimmed and sealed with a silicone sealer (or equivalent) around all fixed, vertical objects (e.g. doorways, posts, etc.) To maximize the aesthetic appearance and serviceability of the newly installed flooring, provide your customer with a copy the Gerflor USA Maintenance Instructions: For any information, please refer to Gerflor Technical Services. Gerflor USA, Inc. 595 Supreme Drive Bensenville, Il Tel.: Gerflor Tel.: Gerflorusa.com Gerflor Recreation & BleacherBlok Installation Instructions USA.docx 13/13