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How to Plumb a New Bath Tub
Step by Step Instructions for Plumbing
in a Bathtub
By: Mark J. Donovan
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If you have ambitions of installing and pluming in a
new bathtub you’ll need a few basic household tools and couple of hours of
time. To simplify your effort and time plumbing a new bath tub, there is a
certain sequence of instructions that you should follow. Summarized below is
a set of instructions and a prescribed flow on how to plumb a new bath tub.
Prior to placing the new bath tub into its final position connect the taps,
and overflow and drain pipes to the tub.
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The reason for this is that once the tub is put into position up
against a couple of walls it becomes extremely difficult to work in such a tight
space.
Second, attach some adjustable feet, e.g. plastic shims, to the bottom of the
bathtub so that you can adjust the height of the tub so that it is at the
desired height and it is level. Make sure to check along the length and width of
the bath tub to ensure that it is level. Once you’ve placed the tub into
position and it is level, connect the bathtub drain pipe to the P-trap located
in the floor.
Then fasten the tub to the surrounding walls by attaching the metal hardware
fasteners to the tub lip and the wall studs. If metal fasteners were not
provided, then attach the tub to the walls by nailing in galvanized nails (e.g.
roofing nails) into the wall studs just above the tub flange, such that the nail
shaft sits just above the tub flange.
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This way the roofing nail head will hold the
tub flange flush to the wall. Installing the Bathtub Faucet
Taps
Whether you have a single mixer type or separate hot and cold taps
there should be a large sealing gasket that should go over the
taps and abut up against the tub wall. Escutcheon plates, or metal
covers, should then be positioned over the sealing gaskets and
then secured to the tub with the appropriate nuts and washers, or
screws, depending upon the type of bathtub faucet you purchased. |
Installing the Waste Outlet and Overflow
First apply a bead of silicone caulk or plumbers putty around the rim
of the overflow outlet in the tub. In some cases a rubber seal may
have come with the waste outlet hardware. If so, use this instead of
the caulk or putty.
Then slide the tail drain assembly into the overflow hole, and fasten
its cover plate to the tub using the screws/bolts.
Similarly attach the waste drain trap to the base of the bathtub,
again first applying silicone caulk or plumbers putty around the rim
of the drain prior to fastening the drain cover to the tub.
Caulking the Bathtub
Finally apply a bead of silicone caulk around the escutcheon tap cover
plates and overflow drain cap area to prevent any water from seeping
in behind them.
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See
My Shower Pan Ebook for More Details on Installing a Shower Pan Membrane Liner: For a more detailed set of
instructions on building a shower pan, including pictures and a detailed
cross-sectional view of the make-up of a shower pan, see my “Shower Pan Membrane
Liner Ebook”.
For help on bathroom remodeling, see HomeAdditionPlus.com's
Bathroom Remodeling Bid Sheet.
The
Bathroom Remodeling Bid Sheet
provides you with the knowledge and information you need to plan a bathroom addition
project, and what to look for when hiring contractors. It
also includes a detailed cost breakdown table and a spreadsheet for estimating
your own new bathroom remodeling building costs.
Related Information
Additional Home Plumbing Resources
Bathtubs from Amazon.com
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