Minimum thickness is 34” over wood framed floors. If reinforcement is used, the pour thickness can be reduced to 12”. Gypsum Concrete is about 7.5- 7.5 lbs/ft at 34” thick and 13-15 lbs/ft at 12” thick.
Gypsum Concrete should be installed at 34” thick over the top of the heat tubes. The industry standard for Pex tubing is only 5/8” and is usually a thick Gypsum Concrete topping.
Gypsum can be used as an underlay for a variety of floor coverings.
The two most important differences are that gypsum concrete Underlayment requires caulking at the perimeter to limit sound transmissions and that traditional lightweight concrete requires reinforcing for stability in doorways.
How thin can Gypcrete be poured? – Related Questions
Is Gyp-Crete cheaper than concrete?
The cost of gypsum concrete is comparable to regular concrete, ranging from $1.75 to $6.00 per square foot. Concrete costs between $2.50 and $4.50 per square foot.
Is gypcrete sound proof?
A sound absorbent material, such as rubber matting, gypsum concrete, or a layer of homasote, will reduce airborne and impact noise transmission into the space below. Wood floors, resilient floors or carpeting are fastened to gypcrete with an glue product.
Can you gypcrete over concrete?
Gypcrete is made of gypsum, sand and Portland cement. Installation of gypcrete is done by experienced professionals who level the material over the surface based on the type of subflooring in the room. Concrete or wooden boards can be used to lay gypcrete.
How do I fix gypcrete?
Dust caused by the crumbling material is what is needed to repair the gypcrete. If you have a clean surface, apply the floor-leveling product or mortar to the damaged areas. Remove the excess product by using a trowel. This will leave a smooth surface.
How long does gypcrete take to cure?
After the pour, keep a 50 degree temperature and adequate air flow. Depending on the weather, 7 to 14 days are required for complete curing.
Does gypcrete absorb water?
“When exposed to water, the gypsum-based underlayment will melt. The rate of gypsum’s absorption in water is 2 g/L. The floor is leveled by the layer between the floor and the subfloor.”
What is a lightweight concrete?
lightweight concrete is made with lightweight coarse aggregate such as slate, clay, or shale, which give it its characteristic low density. It is being used to build sleek foundations, and has become a viable alternative to regular concrete.
What does Lightweight Gyp-Crete weigh?
“With an average weight of seven pounds per square foot for a 34” thickness pour, Gypsum Concrete application gives contractors the ability to pour floor underlayment in buildings and areas where they couldn’t before.”
Is gypsum a cement?
The retarding agent of cement is called gypsum and is used for regulating the setting time of cement. Cement clinker can condense immediately if it is not made of gypsum.
Is Gypcrete toxic?
“Dust which is potentially toxic is generated when working with gypcrete. Dust created by the raw ingredients is the most concern of health risk when reviewing a manufacturer’s Material Safety Data Sheet.”
How do you test moisture in Gypcrete?
“Push the pins of the meter into the wallboard or Gyp-Crete you are testing and you will be able to take a reading. The meter will give you a reading for the amount of water in the sample. This might be harder if you don’t have a meter with a scale.”
Is Gypcrete structural?
It fills the space between the wallboard and the floor, and protects the base plates from fire.
What is the purpose of Gypcrete?
The Maxxon Corporation trademark has become a universally used term for gypsum concrete by construction professionals and architects. It is used in a lot of constructions for sound reduction, fire resistance, and floor leveling.
Is Gypcrete fire rated?
The fire ratings of gypsum underlayment assembly are up to four hours. The fire resistance of the floor is due to the fact that gypsum is a fire- resistant product. When exposed to flame, it releases steam, which slows the spread of fire.
How high can self leveling concrete be poured?
The thickness of the concrete depends on the product used. Standard thicknesses are between 1 inch and 8 inch. It is possible to get options that are as thin as 1/25 inch and as thick as 5 inches.
How much does it cost to jack up a floor?
A slab jacking is a type of concrete lifting that fills any voids under the slab. The costs for slab jacking start at $2000 and will increase depending on how much material is needed and how large the area is.
What causes Gypcrete to crack?
It is lightweight and prone to cracking as an underlayment. Gypcrete is susceptible to damage due to its susceptibility to other types of flooring, and it must be sealed to mitigate cracking and crumbling.
How do you mix gypcrete?
Combine water and powder with a high-speed mixer. For 2.5 minutes, mix to a homogeneity. Do not over mix. Air entrapment can be caused by over mixing, which can shorten workability time and cause pinholing.
Is gypcrete porous?
“Maxxon’s Gyp-Crete was not designed to be used as a flooring material alone. It is used as an underlay for sound control and fire resistance in multi- family buildings.”
How do you dry Gypcrete?
To control the amount of water and heat needed for the gypcrete to dry, use heating, drying and dehumidification equipment. You can walk on the gypcrete after 90 minutes, but it will take five to seven days to fully dry.
What is Gypcrete made out of?
Gypcrete is a cousin to concrete and made of a lightweight sand mixture that is less durable than concrete. Only certain types of flooring can be laid over the wood subfloor.