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Repairing Cracked Fiberglass

Is it possible to fix a crack on the floor of a fiberglass shower stall? It feels soft underneath the crack.

Bill from Lancaster, CA


Repairing Cracked Fiberglass

It should be possible, but how long has the floor been soft. If it was previously solid then there is a chance that water getting through the crack has damaged (rotted the wood) your sub flooring. If your sub flooring is damaged then you will probably need to get a carpenter to come in and put new sub flooring in, and then replace the shower stall.

If not previously solid then it maybe possible to use a good silicon caulk (bathroom or exterior use) to seal it.



By Ken

Repairing Cracked Fiberglass

Go to a auto parts store and get a fiberglass kit it should be about $20.00. I have heard of repair men using this.

By Liz

Repairing Cracked Fiberglass

Don't use caulk and definitively don't try a glassing job if you have no experience. You'll have one fine mess!

I have repaired fiberglass tubs, showers, whirlpools, etc. for a living full time for the last ten years. Have a pro look at it and advise you on the scope of the situation (to see if repairable). Even fairly badly damaged units can be repaired as good if not much better than new for a fraction of the cost of replacement.

I fix blown out and or spongy soft floors at least once a week. It's usually a 5 to 8 hour job depending on several variables that may or may not be existing like voids, delaminations, bad sub floor, cracks, excessive space under unit, etc.

If you are dealing with an honest and reputable repair service they will give you the "real deal" on what can be done and your options. For this you would likely be charged a nominal trip charge or an inspection/consulting fee if the tech deems it not feasible to make a repair or the home owner does not want to schedule for repairs to be made.

Be warned it is a very dusty and noxious process. Also, be sure to use a service that has at least 5 years experience and one that is not a franchise company. Choose one that is, preferably an experienced authorized warranty repair service for a reputable manufacturer like Lasco, Maax, Jacuzzi, etc. Any of the manufacturers can get you info on local repair services.


The cost of a complete and properly done "professional" floor job can range anywhere from 200 to 700 dollars around these parts. But again, that is way cheaper than replacing!

The pic is not of a damaged or repaired floor, easily seen is the damage on the wall. (the floor could use a good cleaning and buff not to mention a few chip repairs). I make ugly stuff like this go away economically, completely, and forever!

On a side note: I am in the process of making and marketing a "miracle" fiberglass cleaning product that easily removes soap scum, stains, and scuffs from fiberglass. Much easier and more economical than any product you can presently buy. I've extensively researched it and am going to unleash the product to the public in about two more months. Will I make millions? Possibly, I sure hope so. It is a superior product and different than any other presently available. We'll see. (09/23/2009)

By Thetubguyswi

RE: Repairing Cracked Fiberglass

Repairing Cracked Fiberglass

I think you can repair fibre glass with all purpose resin and matting. (09/26/2009)

By Dorty

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