Cork is a natural material, extremely effective for sound control (independently
tested according to ASTM standards for acoustical values) and is an effective
thermal insulation barrier. In addition, cork offers important stress crack protection.
Quite easy to install, environmentally friendly, cork underlayment does not deteriorate
after years of use and is an ideal and economical solution for your underlayment
requirements. Specification Data on Product #8244 is available on request.
Installation:
Please read installation instructions completely before installing cork underlayment.
The preferred underlayment panel is APA underlayment grade plywood, minimum
thickness of 1/4", with a fully sanded face. Note: Particleboard,
chip board, Masonite, and lauan are not considered the most suitable underlayments.
Surface Preparation:
Surface must be clean, dry and smooth, free of voids, projections, loose materials,
oil, grease, sealers and other surface contaminants. Maximum floor variation
is 1/8" in 10 feet. Surface areas requiring patching or leveling should
be be repaired with Portland based-cement materials.
Creating and Isolation Barrier:
Unroll cork and cut sections approximately 2" wide off roll. Adhere this
2" isolation barrier around all perimeter walls and around any protrusions
through the flooring, such as beams, plumbing, etc., with any of the following
products:
Urethane Adhesives
Natural Rubber Latex Adhesives
Cartridge Filled Urethane
Acrylic Bead Mastics
Never mechanically flatten the isolation barrier with screws, nails, or staples.
This will severely diminish acoustical values of the barrier.
Installing Cork Underlayment:
- Unroll cork and cut to desired length. Lay cork loosely over area to be installed.
Both ends of the roll must curl down towards the subfloor. If the ends curl
up, flip material over. Butt cork directly against the isolation barrier already
installed.
- Pull the loose laid material back at least half the length of the roll.
 Using a 3/16" x 5/32" v-notch trowel, apply any of the Bostik products
listed above to the subfloor. Gently return the pulled back material and roll
in both directions with a 100-lb roller. Repeat this procedure for the other
half of the roll. Proceed to cover the entire floor making sure all joints are
butted together tightly. Note: If BossTack adhesive is used, allow to flash
until dry, the apply cork and roll with 100 lb. roller (refer to BossTack data
sheet).
- Allow cork adhesive to take a firm set prior to installing hardwood or ceramic
tile flooring. Read adhesive manufacturers instructions to determine adhesive
set time.
Wood Flooring Installation: Apply to cork as follows:
- Follow industry standards and wood floor manufacturer recommendations for subfloor
moisture content, design, layout and application of wood flooring materials.
- Refer to Bostik's Best, BST Urethane, or BossTack adhesive data sheets for
full wood flooring installation instructions.
- When the flooring installation is complete, trim the sound isolation barrier
so that it is flush with the floor.
- Seal the gap between the flooring and the walls or other protrusions with Acoustical
Caulk.
- Natural Cork underlayment is available in rolls 4' x 50' x 6mm (ships via UPS),
4' x 100' x 6mm, 4' x 200' x 3mm thickness. Cork rolls can be easily sheeted
with a sharp knife or razor blade.
Ceramic Tile Flooring Installation: Apply to cork as follows:
Install ceramic tile according to applicable ANS. Standards using Hydroment
SingleOFlex; Hydroment PM; or Tile-Mate Thin Set Mortars mixed with #425 Multi-Purpose
Acrylic Latex Admixture or #447 Flex-a-lastic Admixture.
Refer to setting mortars data sheets for complete instructions.
When the flooring installation is complete, trim the sound isolation barrier
so that it is flush with the floor.
Seal the gap between the flooring and the walls or other protrusions with Acoustical
Caulk.
|
