Salt Lake City, Utah
Knell Construction has poured floor underlayment and lightweight concrete since 1981. We work for general contractors and builders on multifamily, commercial and custom home projects across Utah, Idaho, Wyoming and Montana.
What we pour
From a single custom home to a 5-over-2 podium building, we price per plan, call out exclusions up front, and offer value-engineering options when they save you money.
01 · Floor underlayment
Gypsum Concrete (Gypcrete) poured over wood or concrete subfloors in multifamily units, corridors and custom homes. It levels the floor, adds mass for sound control, and helps meet fire-rated assemblies. Fiber reinforcement is available for crack reduction under thin LVP and LVT.
02 · Acoustics
Sound mat installed under the Gypsum Concrete (Gypcrete) to hit the STC and IIC ratings in your floor-ceiling assembly. We check unit plans, finish schedules and interior design sheets during takeoff so the mat goes where the hard flooring goes.
03 · Geotechnical
Low-density, flowable fill for engineered fill, bridge approaches, void fill and load reduction over utilities. It is placed fast, needs no compaction, and we handle the submittal package for your engineer.
Why GCs call us
We provide a better product and our crews do better work. On top of that, we try to be the easiest sub your office staff and superintendents work with.
We keep enough Gypsum Concrete (Gypcrete) and sound mat stocked in our own warehouse and yard to cover large projects, so your schedule doesn't depend on a supplier's lead time.
We read the assembly details, enlarged unit plans and finish schedules before we price. If something in the drawings doesn't add up, we tell you before bid day.
We'll show you the choices, like mat thickness, Gypsum Concrete (Gypcrete) depth and fiber, and flag what they affect: toilet flanges, drains, stair heights and door clearances.
Submittals, pay applications, lien waivers, insurance certificates and warranties arrive on time and in the format your office needs.
Areas we serve
Based in Salt Lake City, we pour gypsum concrete and sound mat up and down the Wasatch Front, in Park City and the mountain communities, and across Idaho, Wyoming and Montana.
Have a project out to bid? Send plans to Bids@knellconstruction.com or call (801) 274-1178.
Invite us to bid