Fiberglass Tank Repair Services

Western Underground Fiberglass specializes in:



Fiberglass Tank Repair

We specialize in fixing cracked tanks from the inside without excavating the tank. We have fixed tanks cracked completely in two pieces.

Repair of damaged tanks includes adding access to tanks which don't have pre-installed manways.




Retrofit/Modifications to Tanks and Related Plumbing

Most notably for sump pumps on gas tanks, we can adapt different pieces of fiberglass to fit almost anything - adding fittings, baffles, gauges and other interior structures.

We also have done repairs to piping which was near enough (within 24") to the tank that we could reach from inside, saving the cost of digging up the tank to perform the repair.


Cleaning Non-potable Water Tanks

Water tanks frequently get a lot of debris in them - especially if they are broken and leaking. In some cases we have removed debris from underground tanks which was measured in cubic yards.




Custom Fiberglass Fabrication

We are not a fab shop, but in cases where only one or two of something is needed (as opposed to dozens or hundreds where it would be worthwhile to make a mold) we have the ability to manufacture almost any size or shape.

For example, we have built insulation boxes for maintenance reels at a bus depot in Commerce City, Colorado.


Repairing Swimming Pools, Spas & Waterslides




Specializing in repair and modification of
underground fiberglass tanks without excavation.

Serving Wyoming, Utah, Colorado,
Kansas, Arizona and New Mexico.

Western Underground Fiberglass
Phone: 303-921-1186