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GENERAL · Ensure that calcium chloride moisture tests have been conducted and that the results do not exceed 5.0 lbs. per 1000 sq. ft. in 24 hrs.
· pH of concrete subfloor surface is no greater than 10. A bond test is conducted and passed.
· The permanent HVAC system turned on and set to a minimum of 68oF (20o C) for a minimum of 72 hours prior to, during and after installation. After the installation, the maximum temperature should not exceed 100oF.
· Flooring material has been climatized to the installation area for a minimum of 24 hours prior to installation.
· Only Forbo Linoleum L910 Adhesive should be used.
· Use a 1/16" x 1/16" x 1/16" square notch trowel only.
· Material should always be visually inspected prior to installation, any material installed with visual defects will not be considered a legitimate claim as it pertains to labor cost.
· Marmoleum will expand slightly in the width and shrink slightly in the length when placed into the adhesive. Proper installation procedures will compensate for this.
· Do not reverse sheets for seaming.
· Install one sheet at a time.
· Flat trowel material (as to double stick) and weigh down stove bar marks.
· Install all cuts and rolls in consecutive sequence.
· Take pride in your work and be Professional at all times.
· Ensure that all recommendations for subfloor and jobsite conditions are met prior to beginning the installation. Once the installation is started, you have accepted those conditions.
CUTTING AND FITTING SHEETS
1. Cut the required length off the roll, including enough to run up the wall 2-3" at either end.
2. Push the length of the sheet as close to the starting wall as possible, letting the extra length run up the wall at each end.
NOTE: Material should be laid out and positioned so that any seams will fall at least 6" from underlayment joints and/or saw cuts in the concrete.
3. Set the scribes to a minimum of 3/8" more than the greatest distance between the wall and the flooring material. Scribe the shape of the wall onto the flooring.
Next, cut the material along the scribe line using a hooked blade knife and holding it at an angle so as to slightly undercut the material.
4. Push the fitted sheet tightly against the wall.
5. Using the Forbo seam and strip cutter, trim the factory seam edge.) A straight edge, utility knife and hooked blade knife may also be used to trim the factory edge. Set straight edge to trim off approximately 1/2". With utility knife, score material about 1/3 the thickness deep. Then with the hooked blade, cut along the score line holding the knife at an angle to undercut the edge.
6. Draw a pencil line on the subfloor, lengthwise along the seam edge.
7. Lap the material back about halfway. Spread the Forbo Linoleum L 910 Adhesive with the proper notched trowel (Fig. 4). Begin spreading at the lap point working back toward the wall. Spread from the side wall up to the pencil line at the seam edge. Do not spread adhesive 5-6' from the end.
8. Material must be laid immediately into the wet adhesive and rolled with 100 lb. roller.
9. Roll across the width first, then along the length.
NOTE: To ensure proper bonding of the material, it is recommended to roll the material next to the walls with a hand seam roller.
10. Repeat the same procedure on the other half. Again, do not spread adhesive for the last 5-6' from the end.
11. To finish the ends draw a crossline on the subfloor and the sheet near the end). Draw back the sheet along the pencil line until the end of the sheet lies flat on the subfloor. Set the scribes or dividers to the distance between the two crosslines. Scribe the end of the sheet to the wall and cut off. Spread the adhesive and roll. Repeat the procedure at the other end.
12. The first sheet should now be fully cut in, adhered and rolled.
SEAMING PROCEEDURES
1. Cut the second sheet to the required length with 2-3 inches extra at either end.
NOTE: DO NOT REVERSE SHEET. INSTALL ALL MARMOLEUM SHEETS IN SAME DIRECTION.
2. Overlap at seam approximately 1 inch.
3. Using the Forbo seam and strip cutter, trim the factory edge on the opposite side to prepare for the next seam.
4. Draw a pencil line down the length of the second sheet.
5. Lap the material back about halfway.
6. Spread the Forbo Linoleum L910 Adhesive with the proper notch trowel. Begin spreading at the lap point working back toward the wall. Spread from the edge of the first sheet up to the pencil line at the seam edge of the second sheet. Do not spread adhesive 5-6' from the end.
NOTE: The subfloor porosity and room atmosphere conditions (temperature, humidity, etc.) can affect the working time of the adhesive.
7. Material must be laid immediately into the wet adhesive and rolled with 100 lb. roller.
8. Immediately after material has been laid into the adhesive, underscribe the seam using the short scribes with scribe pin.
NOTE: Scribes should be set so that there will be a hairline gap at the seam, which would be a net fit where the material will fall into place with no pressure on the material. This will compensate for the slight expansion that will occur.
9. Next, cut the material along the scribe line using a hooked blade knife and holding it at an angle so as to slightly undercut the material.
10. Repeat the same procedure on the other half.
11. Finish the ends of each sheet in the same manner as the first sheet.
12. Repeat the same procedures for each drop, completing one drop at a time until the job is completed.
13. If cross or butt seams must be made, use the following procedures to allow for any shrinkage that may occur in the length:
A. Straight edge and undercut at an angle the end of the first sheet.
B. Draw a pencil line at end of first sheet, spread adhesive to line, lay in material and roll.
C. Overlap second sheet at butt seam approximately 1".
D. Fully adhere and roll second sheet as usual except for the last 18" at butt seam, wait 20-30 minutes.
E. Spread adhesive for last 18", lay material in, underscribe seam net, cut, roll.
NOTE: In some situations, such as installing material in a narrow hallway where only one piece of material is being used, tubing the material will be necessary. In these situations, close attention should be made in making sure the material is laid into wet adhesive, as well as, being sure to avoid adhesive overlap which could result in a ridge line where the material was folded back. Tubing minimizes the shrinking of the material.
STOVE BAR MARKS
When drying linoleum, the product is suspended in large loops in the drying rooms. The top loop (A), known as a pole mark, is cut off and recycled. The bottom of each loop (B) is called a "stove bar markand will appear approximately in the center of a roll When installing the stove bar mark area, simply spread adhesive with the flat side of the trowel on the backside of the sheet across the material then spread the adhesive on the floor (as to double stick) the material. Remember you must place the material directly into the wet adhesive. Be sure that when you place the stove bar mark into the wet adhesive that you massage the material down and push the material flat. Roll the material in all directions, starting across the width of the material. Be sure that the stove bar mark is rolled first to avoid trapping the tension on the material. Place weights on the stove bar area until the adhesive has set up.
NOTE: The stove bar marks are not considered a factory or material defect. If problems occur they are always directly related to improper installation techniques.
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