How To Install Bellawood Premium Underlayment



  1. Bellawood Premium/Platinum Underlayment is designed for use with most nail, glue down and floating floor products and is flexible, easy to install and features a 3 mil moisture resistant top film layer. This sound reduction underlay system is suitable for use over most types of industry approved sub floors (3/4' plywood, concrete, OSB flooring, etc.).
  2. Staple or Nail Down Installation. With a staple down or nail down installation over a wood subfloor using solid flooring or engineered flooring, it is recommended that an underlayment of 15lb. Black felt paper is rolled out over the wood subfloor prior to installing the new floor. This hardwood felt paper is necessary to greatly reduce the chance of any moisture coming up through the subfloor and will help protect the new hardwood flooring.
  3. We began our layout and cleaning of the sub floor and installation, we used a very effective and recommended installation method measuring out 5 rows of wood, snapping a chalk line and applying Mapei Eco955 with the trowel clip on ends that are provided in the adhesive pale, applying a full consistent spread of the adhesive moisture barrier keeping within our squared and measured chalk line, installing plank after plank leaving 3/8 to 1/2 inch of gap space along all vertical walls.

To begin laying flooring start at the corner of the room and lay plank-by-plank on top of underlayment until you reach the opposite wall. Each row should have no gaps in joints. Once your first row is complete start on the next row. Please note the joints in the flooring should not line up from one row to the next.

SurePly® Premium Plywood Underlayment & Materials Preparation

  • Allow all materials used in your flooring installation to acclimate to the heated home environment, approximately 70°F, for 24 to 48 hours prior to use.
  • Store all panels on their 8' edge (separately if possible) to allow equal air flow over the face and back of the material.
  • Examine each piece of SurePly® plywood underlayment using the Flex & Look Test.

Follow these steps:

How To Install Bellawood Flooring

Bellawood platinum underlayment reviewHow To Install Bellawood Premium Underlayment
  1. Stand the panel vertically with its 4' edge on the floor and the panel face towards you (the staple/nail pattern will be facing you).
  2. Grip the top panel edge with one hand and firmly place the palm of your other hand against the face of the panel.
  3. Pull the panel down approximately 4” - 8' with your top hand while simultaneously pressing forward with the palm of your other hand approximately 4” - 8' until a noticeable curve is in the panel. Hold this position during inspection.
  4. With the panel in this flexed position, thoroughly inspect the entire panel surface for imperfections, which will look like 'bubbles' or 'creases.' In the rare instance that you find such an imperfection, do not use the panel. Set it aside and contact Patriot Timber Products immediately for a resolution.

Structural SubFloor Preparation

  • Install SurePly® plywood underlayment over a clean, dry, level, original sound structural subfloor, or existing floor.
  • Thoroughly scrape, sweep, and vacuum the entire surface and strip any wax from the existing vinyl.
  • Do not use any adhesive beneath SurePly® plywood underlayment.

Positioning SurePly® Premium Plywood Underlayment

  1. Run SurePly® plywood underlayment panels perpendicular to the floor joists.
  2. Begin by laying out the floor in a corner of the room where you can get the greatest amount of coverage without having to cut the SurePly® plywood underlayment panels. The face with the nailing pattern is designed to go up.
  3. Position SurePly® plywood underlayment panels 1/8' to 1/4' from the walls to allow for expansion.
  4. The panels should be cut so that the factory edges go together at the seams in the field of the floor. Hand cut exterior edges for installation next to the walls.
  5. Stagger SurePly® plywood underlayment panels to create a 2' minimum offset between the SurePly® plywood underlayment panel and subfloor seams.
  6. There are two methods for installing the SurePly® plywood underlayment. The first method, and our preference for all SurePly® plywood underlayment installations, is to install the panels without an expansion joint and without a seam filler. We recommend you use this method for installation under vinyl, vinyl composite tile, luxury vinyl tile, ceramic tile, carpet, engineered flooring, and wood floors. For a SurePly® plywood underlayment installation without an expansion joint, lightly butt the panels together without applying any pressure so they barely touch at the joints.The second method is to install the SurePly® plywood underlayment panel with an expansion joint and using a seam filler. If you choose to install the SurePly® plywood underlayment panel with a seam filler, leave a 5/64' gap, approx. the thickness of a nickel, between each panel. Then fill the seams according to the seam filler manufacturer's instructions.
  7. Cut and place SurePly® plywood underlayment on the subfloor without any fasteners, or 'dry fit' all panels first before beginning any fastening.
  8. Plywood underlayment panels should be laid in an offset pattern as shown in the Flooring Diagram so that four corners never directly intersect.

Fastening SurePly® Premium Plywood Underlayment

  1. Do not use any adhesive on the subfloor beneath SurePly® plywood underlayment.
  2. We recommend a pneumatic fastener tool that incorporates an adjustable depth-drive control to prevent fastener 'blow-through' or 'over-driving.' If this feature is not available, adjust the air pressure on the compressor to an appropriate level to avoid fastener 'over-driving' or 'blow-through.'
  3. You can fasten SurePly® plywood underlayment by selecting one of the following options: Galvanized coated chisel-point staples with a 1/4' maximum crown or flathead wood screws treated with a moisture-resistant coating (such as galvanized or zinc). Do not use drywall screws. Do not select a fastener that is uncoated, cement or rosin-coated, as they may rust and discolor your finished floor. The length of the selected fastener should be a minimum of 5/8', but not so long that it protrudes through the bottom of the subfloor.
  4. Stand on each plywood underlayment panel during fastening to ensure full contact with the subfloor. Any 'crackling' or 'popping' noises indicate debris is underneath the panel. Should this occur, stop the installation, remove and discard the panel, then scrape, sweep, and vacuum the subfloor again until all debris is removed.
  5. All fasteners should be slightly countersunk below the surface of the new underlayment.
  6. Fasten the 8' edge first at 2' on center - 1/2' from edge - starting from the corner of the room. Leave an expansion joint of 1/8' to 1/4' between the panel and the edge of the walls. Stand on the panel to ensure flush contact with the structural subfloor, and do not overdrive the fasteners.
  7. Return to the starting corner and fasten the 4' edge at 2' on center - 1/2' from the edge of the panel.
  8. Return to the starting corner and fasten the diagonal at 4' on center to the opposing corner.
  9. Return to starting corner and fasten the 'field' of the panel every 4' on center working in a diagonal direction across the face of the SurePly® plywood underlayment panel. Make sure to put a fastener in each 'x' as you work diagonally across the panel.
  10. Fasten the remaining 4' edge 2' on center - 1/2' from the edge of the panel.
  11. Finish the sheet by fastening the remaining 8' edge 2' on center - 1/2' from the edge of the panel. Note that the same procedure is used as well for the offset sheet which would start the next row of underlayment.
How To Install Bellawood Premium Underlayment

Using Seam Filler with SurePly® Premium Plywood Underlayment

  1. If you choose to install the SurePly® plywood underlayment panel with an expansion joint, you must use a seam filler.* Check with your flooring supplier/manufacturer to be certain your seam filler is acceptable.
  2. Do not 'floor-mix' seam fillers on top of the SurePly® plywood underlayment panel face. Mix the seam filler separately in a bucket.
  3. Once the plywood underlayment panels are fastened, apply the seam filler and allow it to dry completely in accordance with the manufacturer's instructions. Allow sufficient curing time to completely dry the seam filler.
  4. Sand all joints with a belt or floor sander until level and smooth. Hand sanding is not sufficient.
  5. Do not oversand or 'cup' the joints. Some additional application, drying time, and sanding may be necessary to smooth high or low spots.
  6. After sanding, the seam filler should fill the seams and be flush with the edges of the SurePly® plywood underlayment panels. We do not accept 'feathering' as a substitute for sanding the seam filler.
  7. Thoroughly vacuum the entire area to remove all debris before installing the floor covering.

*Note: You may leave an expansion joint without seam filler when SurePly® plywood underlayment is used under carpet, engineered floors, or wood floors.

Causes of Telegraphing Seams and Panel Blow-Through

In our 50 plus years of experience, the majority of underlayment flooring failures are due to telegraphing seams and fastener blow-through. Telegraphing seams and fastener blow-through are always the result of incorrect installation.They are not caused by panel failure.There are many factors that can cause telegraphing seams. These are the most common:

Underlayment
  • The use of too much seam filler
  • Not allowing the seam filler to dry sufficiently
  • Not sanding the seam filler smooth and even with the plywood underlayment
  • Panels being butted too tightly together
  • Panels not properly acclimated
  • Too high moisture content in flooring environment
  • Uneven subfloor
  • Placing the fasteners more than 1/2' from the edges of the panels
  • Inconsistent fastener depth and blow-through along the edges of the panels

Bellawood Platinum Underlayment Review

Fastener blow-through is caused by not properly adjusting the drive depth or air pressure in your staple or nail gun, which can result in shooting the fastener completely through the underlayment. Nothing short of physical plywood failure such as delamination will be warranted with regard to telegraphing seams.

Caution Regarding Point Overloading

Before moving or positioning any heavy object across the floor (such as a large appliance), place a minimum of 1/4' plywood on top of the completed floor to prevent point overloading.

Here at Lumber Liquidators and today we’re going to demonstrate a lock and fold installation using a dream home Nirvana plus laminate first thing you want to do when you bring it home and sit in the middle of your room away from exterior walls and Vince and if you have a concrete floor make sure you put sticks or plastic down to help block what’s your from the concrete from affecting your floor when you’re activating the product normally laminate floors required 48 hours for acclimation read the instructions because it may take longer you normal temperature in the room should be between 60 and 80 degrees Fahrenheit and your humidity should be between 35 and 65% normally a maximum of 75% with 9 minutes. After acclimating the floor more testing is the next step in the process this is what you call a surface concrete emotion meter this tool is used of the surveying tools so you want to test several areas of your concrete to see if there’s any elevated moisture anywhere in your property.If you’re looking at the top row with numbers anything over 3% with this meter indicates excessive amount of moisture in the slab and if you getting that reading you want to make sure you take extra steps and do a calcium chloride test to determine how much moisture is actually in this lab after more testing the next out if the check the software for flatness to do the snowman start asking you that level ustrated but in this case if you don’t have one you can use a long laminate plank. So what you do is take your long laminate plank and you just run it over yourself lower in any direction to see if there’s any high or low spots you trying to have the Cell forward to be flat within ⅛ of an inch over six feet. After you clean the floor and you touch for flattening the next step is to put down your motion barrier we use the dream home 6 mil poly shooting as a moisture barrier even if using a premium underlayment pad you want to use a much of area under the pad when installing laminate flooring on concrete now that you got your moisture barrier down.

This is a dream home 6 mil poly sheeting the next step is to you than underline with cushion even if your laminate have the pad attached you can use a premium cushion like the bubble with premium underline all as long as they manufacture the products was ok to do what you think about it would underline it today because it has superior sound qualities, its antimicrobial and it also provides more protection which is the actual value to any home past like this also recommended by condo associations because of the fact that it will didn’t sound transfer blood to other for you want to keep the same about a half inch away from your wall or any other room for the air to circulate around the perimeter and evaporate when installing the next row of underlayment and you want to peel back the adhesive strip. This allows the film on the underlayment to but up to the previous row. Right now I’m using the overlap flap and overlapping the previous row of underlayment that I’ve installed this will provide a more protective seal to help block moisture from coming my love now we have our bellawood premium underlayment down we’re going to begin the installation of a lock and fold laminate for the laminate we want to groove side facing away from the wall we want these smaller tongue side facing the wall and we want to install the laminate going from the left hand corner to the right when you’re facing the wall for this installation we can I use these spaces that come in the dream home Lumber Liquidators laminate kit and the spaces when you put two together they’re going to be about 5:16 stick so we’re going to measure the width of the board plus the left of the spacers and use that to measure off the wall so we measure the width of the plank and we get a measurement of 4 inches and 7/8 exactly footer spacer against the wall and measure away from the spacer 4 7/8 of an inch now going to mark the metal would pass a guy for my chalk line now go to the opposite side of the same wall and measure away from the spacer 4 7/8 eighth of an inch in between these two marks with a proper chalk line up the line and we have a straight starting line to start a laminate floor. Before you put the wood down the laminate floor you want to use the spacers up against the wall because his wall drywall is raised up we’re going to go ahead and take this paper to the wall so they don’t fall so you can do this with some blue painters tape that will not hurt the wall. You want to use the spacers against the starting wall and against the side wall to the left. Okay now that we got there first plank in using again size spacers when we install the next plank we wanted to but it up and keep it at an angle set against the side wall to the left.

Okay now that we got there first plank in rushing again size spacers when we install the next place we wanted to but it up and keep it at an angle cuz got to get it over this lip just but it up to the previous prank pushed against your spacers and then just drop it down this is not locked together it does not lock until you install to the next row was just holding in place for right now with this laminate products all the flights are full size link to do in order to keep a stager or random look. When we start the second row we’re going to take a full size plant and cut it in half. This side will be outside and we can use to finish off the row. Okay now we just cut to start the second row. Normally you want to have a spacer right here also before you locked the first point again so you will raise it up at a slight 45 degree angles remember you have a space right here put some force on the first row with your with your hand and body weight and then this just drop it down just lock it and drop it for the next place you do the same thing your english at a 45 degree angle to the previous row then we’ll keep it at an angle and slide it down to but up to the first place in the second row. Listen to the video for complete instructions.