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laspsf

04:21PM | 08/31/00
Member Since: 08/30/00
1 lifetime posts
Bvmisc
We have just moved into a new house and have realized that the basement tub has a crack in the bottom of it. It is a fiberglass tub and it seems that when the old owners installed it that they didn't lay down a mortar foundation to support the bottom. Is there some way to fix the crack and pump something under it to support the bottom? Is there a way that won't cost an arm and a leg or am I doomed to replace the whole tub? Any suggestions would be appreciated!

HOLLYWOOD

04:11AM | 09/02/00
Member Since: 02/19/00
206 lifetime posts
I believe that an epoxy based glue is availiable and should work quite nicely.

Chip

06:25AM | 09/02/00
The way I have fixed fiberglass tubs is using fiberglass resin(make sure to get the activator) and a sheet of fiberglass which can be purchased at most hardware stores, you will need to flip the tub over and do this from the bottom. Remove any paint, and rough up the surface with a wire brush, the way I apply this is with a cheap paint brush. Mix in the activator according to directions(you won't need much, about a cup), brush the activated resin in and all around cracked area, cut a piece of the fiberglass sheet bigger than the crack (do this before mixing) about 3" should do it, make it longer than the crack also a couple or three inches, place the cut sheet over crack and press into resin with a paint stick or the like, you can carefully apply more resin but don't mess up the glass, if you can't do it without messing it up then let it harden (before it hardens you may want to check and clean any resin that squeezed inside the tub). Mix more resin and apply again,let harden, this should do it, if you do not use the sheets, it will just crack out again. To fill the crack on the inside, you could try using a cotton swab and a little more resin. Be sure to properly support the tub before re-installing.

Get 2 or 3 cheap brushes to do this, then you can just throw them away, you will not be able to use the same brush twice. They have brushes for a buck or 2.

Hope this helps.

[This message has been edited by Chip (edited September 02, 2000).]

www.ABETTERSURFACE.com

04:55PM | 04/12/01
Member Since: 04/11/01
7 lifetime posts
laspsf,

You probably won't be able to take the bathtub out and flip it over, and if you did you should probably just replace it with a new one while you were at it.

A professional resurfacing company who does fiberglass repair work will be able to fix that problem, for less than what it will cost to replace it. If you attempt it yourself it may not hold in the long run.
If done properly a "cut out", as it is called, is stronger than some bathtubs that have been installed. The reason is that it will now have a solid foundation to rest on.

A "cut out" is a fiberglass repair where the entire floor is cut out, a new foundation is poured, and a new floor is placed down while the foundation is still wet. A major fiberglass repair is then done over the top of it.

When looking for a resurfacing company for this job ask these important questions:

What do you use to make the repair? Is it fiberglass or a plastic filler? (Fiberglass is stronger, and unlike plastic filler is waterproof)

Will you be using fiberglass cloth to strengthen the repair?

Do you use expandable foam for support or do you pour a new foundation? (Expandable foam eventually undermines the repair because it is not a solid substratum. It will crack again)

Do they refer to it as a "cosmetic repair" or a "cut out"? (A "cosmetic repair" is just that, cosmetic. It only looks good but eventually will crack again)


It's a large and complicated job. To be done right you should have a professional resurfacing company do the work, or replace the bathtub altogether.

For more information on any question regarding the resurfacing industry visit our website at: www.ABETTERSURFACE.com

Larry Hunt, Area Manager
A BETTER SURFACE


www.ABETTERSURFACE.com

04:57PM | 04/12/01
Member Since: 04/11/01
7 lifetime posts
laspsf,

You probably won't be able to take the bathtub out and flip it over, and if you did you should probably just replace it with a new one while you were at it.

A professional resurfacing company who does fiberglass repair work will be able to fix that problem, for less than what it will cost to replace it. If you attempt it yourself it may not hold in the long run.
If done properly a "cut out", as it is called, is stronger than some bathtubs that have been installed. The reason is that it will now have a solid foundation to rest on.

A "cut out" is a fiberglass repair where the entire floor is cut out, a new foundation is poured, and a new floor is placed down while the foundation is still wet. A major fiberglass repair is then done over the top of it.

When looking for a resurfacing company for this job ask these important questions:

What do you use to make the repair? Is it fiberglass or a plastic filler? (Fiberglass is stronger, and unlike plastic filler is waterproof)

Will you be using fiberglass cloth to strengthen the repair?

Do you use expandable foam for support or do you pour a new foundation? (Expandable foam eventually undermines the repair because it is not a solid substratum. It will crack again)

Do they refer to it as a "cosmetic repair" or a "cut out"? (A "cosmetic repair" is just that, cosmetic. It only looks good but eventually will crack again)


It's a large and complicated job. To be done right you should have a professional resurfacing company do the work, or replace the bathtub altogether.

For more information on any question regarding the resurfacing industry visit our website at: www.ABETTERSURFACE.com

Larry Hunt, Area Manager
A BETTER SURFACE


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