3.1.4
Wood Surfaces
Wood surfaces to be in contact with sealants shall be free of splinters and
sawdust or other loose particles.
3.2
SEALANT PREPARATION
Do not add liquids, solvents, or powders to the sealant. Mix
multicomponent elastomeric sealants in accordance with manufacturer's
instructions.
3.3
APPLICATION
3.3.1
Joint Width-To-Depth Ratios
a.
Acceptable Ratios:
JOINT WIDTH
JOINT DEPTH
Minimum
Maximum
For metal, glass, or other
nonporous surfaces:
6 mm (minimum)
6 mm
6 mm
over 6 mm
1/2 of
Equal to
width
width
For wood, concrete, masonry,
stone, or ___________:
6 mm (minimum)
6 mm
6 mm
Over 6 mm to 13 mm
6 mm
Equal to
width
Over 13 mm to 50 mm
50 mm
16 mm
Over 50 mm
(As recommended by sealant
manufacturer)
JOINT WIDTH
JOINT DEPTH
Minimum
Maximum
For metal, glass, or other
nonporous surfaces:
1/4 inch (minimum)
1/4 inch
1/4 inch
over 1/4 inch
1/2 of
Equal to
width
width
For wood, concrete, masonry,
stone, or ___________:
1/4 inch (minimum)
1/4 inch
1/4 inch
Over 1/4 inch to 1/2 inch
1/4 inch
Equal to
width
Over 1/2 inch to 2 inches
1/2 inch
5/8 inch
Over 2 inches
(As recommended by sealant
manufacturer)
SECTION 07920
Page 12
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