Publicidad
SECTION A
FOUNDATION REQUIREMENTS
Level surface -
no loose
masonry
Sound sidewalls
To operate properly, the Bilco Door must be square and firmly
anchored to a sound foundation.
wall must:
be solid, with no loose or crumbling masonry
have a uniformly flat and level surface on which to anchor the
Bilco Door
be uniformly level with the opposite sidewall
The sill must be 2" to 4" above grade.
If repairs are needed, they should be done before the Bilco
Door is installed. See the following guidelines, HOW TO REPAIR
MASONRY SIDEWALLS.
HOW TO REPAIR MASONRY SIDEWALLS
1) Mortar Joints Loose or Crumbling
Remove loose material and crumbling mortar to solid masonry, or
a depth of one inch, whichever is greater. Clean all surfaces with
water. Refill joints with pre-mixed, bagged mortar cement, follow-
ing instructions on mortar bag. See your masonry supply dealer for
complete information.
2) Sidewalls Need Reinforcing and Resurfacing
Apply fiberglass surface bonding cement to both sides of the walls
to reinforce, resurface and waterproof them. Several brands are
available from your mason supply dealer. Surface preparation and
application methods are critical. Follow manufacturer's instruc-
tions for the brand you use.
3) Top Surface of Sidewalls is Rough, Not Level.
Prepare surface for new concrete cap by removing all loose material
down to solid masonry, rough up surface and clean with water. Apply
masonry bonding agent and pour new concrete cap using bagged,
pre-mixed concrete mix. Check with your mason supply dealer for
best bonding agent and concrete mix. Form a level surface on top of
each sidewall and be sure both walls are level with each other.
Pressure treated wood may be used instead of concrete. It must be
level, caulked and firmly anchored to the foundation. You may wish
to use Bilco Foundation Plates, available from your Bilco Dealer, to
finish the top of the sidewalls. See SECTION B for information.
4) Single Course Brick Sidewalls
Brick sidewalls that are only one brick wide may not be strong
enough to support the Bilco Door. They should be reinforced with
another course of brick, or by a concrete wall poured against the
brick wall and tied into it with wall ties.
Level
Sill 2" to 4"
above grade
FIGURE - 1
Each sloped foundation side-
SECTION B
OPTIONAL FOUNDATION PLATES
Bilco foundation plates are available from your Bilco dealer. See
size chart on page 3 for dimensions. Foundation plates are installed
on top of areaway foundation sidewalls to:
•
improve areaway appearance
•
cover rough masonry and small holes, and span voids in brick
and concrete block
•
reduce the inside width of the areaway foundation
•
for corner installations with one side supported by house
1) How to Cut Foundation Plates
Foundation plates must be cut to fit areaway. For best appearance,
cut ends that go against house and scribe 1-3/4" side to fit flush
against house. For safety, work gloves, eye and hearing protection
and long sleeves are recommended. Do not cut near flammable
materials. Firmly clamp plate to a solid surface. Cut with a circular
saw and an abrasive metal cutting blade, a reciprocating saw or jig
saw and a metal cutting blade with 18 to 24 teeth per inch, or use
a hacksaw. Do not force blade through steel.
2) How to Install Foundation Plates
Foundation plates are 84" long. Select correct width for your foun-
dation, determine overall length, and cut to fit (note: foundation
plates are installed with 1-3/4" flange on outside of sidewall, see
Figure - 2 below). If areaway is longer than 84", overlap two foun-
dation plates. To do this, place a full length foundation plate at low
end of each sidewall and cut a piece long enough to fill gap and
overlap first plate by at least one inch, see Figure - 2 below.
Foundation plates must be level. If necessary, level top of sidewalls
with mortar before installing foundation plates. Foundation plates
must be firmly anchored to foundation with 1/4" lead or steel
masonry anchors (not supplied). If door frame overlaps foundation
by at least 2", the foundation plates and door frame can be
anchored to the foundation at the same time, using the nail-in
anchors in door hardware. Assemble door frame per SECTION C
Step - 1. Place foundation plates on foundation and position door
frame on top of foundation plates per Step - 2. Using predrilled holes
in door side pieces as a guide, drill 9/32" holes with a metal drill bit
through foundation plates. Change to a 1/4" carbide tipped mason-
ry bit and drill 2-1/4" deep holes into solid masonry. If foundation
walls are concrete block or brick, drill holes in solid portions of the
masonry. Follow Step - 3 to anchor door to foundation. If door frame
does not overlap foundation by at least 2", anchor foundation plates
to areaway foundation using 1/4" nail-in anchors provided with the
door hardware. Locate anchors at least 6" from the inside edge of
the foundation plate, space 18" apart, and anchor door frame to the
foundation plates with 1/4" round head bolts and nuts (purchased
separately). It may be necessary to chisel pockets in foundation for
bolts and nuts.
To increase length of foundation
plate, place full length plate on
foundation, cut a piece to fit and
overlap lower plate by 1".
FIGURE - 2
Page 2
Anchor plates
with 1/4"
masonry
anchors
Publicidad
