Caulk Confusion
Which
caulk is best? Rubber caulks provide good adhesion and
water resistance, but are sticky and hard to tool, and they
shrink. Use them to seal and repair gutters and flashing,
filling cracks in asphalt, and around doors and windows. Use
outdoors: the solvents are hazardous.
Water-base
latex caulks are easy to apply, tool and paint - and best
used indoors on minor gaps.
Silicone
caulks are waterproof and adhere to almost anything, but are
messy and hard to tool. Use indoors and out, especially around
sinks, tubs and showers, and on exterior trim and nonporous
materials.
Polyurethane
is ultra-durable, highly adhesive, waterproof, and
flexible. Poly can be painted, but it's expensive and hard to
tool. Use to seal joints in concrete, repair masonry siding,
and to bridge gaps, especially between porous and nonporous
materials..
(425)985-3289
Jim Estrada
