Burke Flooring EcoFitness Rubber Sheet Rolls Installation - Manual (Page 5)

Page 5
Burke Flooring Products, a Division of Burke Industries
2250 South Tenth Street, San Jose CA 95112
(408) 297-3500
9. Do not use gypsum based leveling or patching compounds under any
circumstances. Rubber tile is extremely resilient and will cause all
gypsum or plaster-based patching compounds to crack or split. Use
only cementituous based trowel-able patching or self leveling
compounds!
10. Expansion Joint. No attempt should be made to lay Rubber tile over an
architectural concrete expansion joint that is designed to move. Instead, the
tile should stop before the joint on both sides. The joint should be protected
with a metal cap fastened on one side allowing the joint to move without
restriction. Use expansion joint systems as manufactured by C/S Group,
Muncy, PA 17756 (570) 546-5941; (800) 233-8493.
11. Exposure to extreme heat. Extreme heat from sun, blowers or radiant heat
during the adhesive cure will cause the rolls to expand and peak. During the
period of 24 hours before installation and throughout the adhesive curing
period, the sub-floor temperature should be at 72ºF (24ºC) and must not be
colder than 59ºF (14ºC) or warmer than 85ºF (29ºC). Refer to cure time chart
in Section IV B.2. Direct sunlight should be blocked during installation and
for the first 8-12 hours of adhesive cure time.
B. Wood Sub-floors
1. Exterior grade plywood with a minimum total thickness of 1" should be used
with smooth plugged side up. Hardboard, Luan, MDF, chip boards or other
engineered wood substrates, are not strong or stable enough and are not
recommended.
2. Wood sub-floors will require ventilation when laid over concrete to avoid wet
and dry rot. At least 18" of airspace and air circulation between an on grade
or below grade concrete sub-floor and the wood sub-floor is mandatory.
3. Planked wood floors used as a sub-floor may "telegraph" through a rubber
tile installation. It is best to install plywood over plank floors.
4. Unevenness of wood sub-floors should be planed or machine sanded.
Remove all dust by vacuuming.
5. Loose sub-floor panels should be refastened with screws.
6. Protruding nails should be leveled or removed. Holdfast or screw nails
should be used.
7. Single sheets of wooden sub-floors should not exceed 16 square feet or 1.2
square meters.
8. Expansion space between wood panels should be .038" or 1 mm.
9. Dents, seams and holes may be leveled with the rubber tile epoxy adhesive
or cementituous leveling compound. After cure, the adhesive must be sanded
to roughen its smooth surface.
10. Plywood sub-floors should be screwed down or nailed with flooring ring
nails. Use a minimum of 1 fastener per 9 square inches of sub-floor.