Gypsum is considered to be one of the most crucial components of any construction or home improvement project. It’s a versatile mineral that can be used in various forms. This includes but is not limited to gypsum boards, plaster, and other applications.
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DIY enthusiasts and professional contractors alike use it for any possible project. This gypsum buying guide will cover eight factors that you need to consider prior to making a purchase. The purchasing process can be a challenge - but this buyer’s guide can make things easier.
Let’s take a look now at the following considerations down below.
The first step is to understand the different types of gypsum that are available. There are two major types: natural gypsum and synthetic gypsum. Let’s take a quick look at how they differ:
Now that you know the difference between the two types, we’ll discuss other factors that play a role in your purchasing decision. Let’s continue on now.
When buying gypsum boards, you’ll want to be aware of any specifications that will determine your project’s suitability. These include but are not limited to the following:
Moisture resistance is critical because of the possibility of water damage. If you are constructing a project in an area where high humidity and moisture exposure is likely, you want to take this factor seriously. You want to pay attention to the following:
MR:
Moisture Resistant
MMR: Moisture and Mold Resistant
As you can see, the two terms are self explanatory when it comes to your needs and preferences. If your project is in a specific room like a kitchen, bathroom, or basement, it may be a good idea to consider gypsum that will be able to not only resist moisture, but also mold.
Mold itself can cause health hazards. Not only that, it can also lead to further structural damage. Such damage can cost you upwards of thousands of dollars in abatement. Choose the kind of moisture resistance wisely before going forward.
Eco-consciousness is always a good idea for those who practice it. If you are someone that does this, it’s clear that synthetic gypsum will be your best option. These types of products are manufactured using sustainable practices. They may also be LEED certified.
Be sure to check for these credentials while you’re looking for gypsum to buy. Natural gypsum may not be as environmentally friendly, so it won’t be the best choice on your radar.
Ease of installation is always something to consider for DIYers. Gypsum boards are the best option, saving you time and effort in the process. Other products come with certain features like pre-marked lines - reducing the chances of error while you construct your project.
It’s clear that price and budget can be a deciding factor. However, it’s good to know which type of gypsum is the best option in terms of affordability. As you would expect, natural gypsum would be a more expensive option compared to its synthetic counterpart.
It’s important to consider your project’s budget and any constraints you might be dealing with regarding the materials and tools you choose.
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Durability and longevity should never be compromised. Especially when you are applying it to places where exposure to wear and tear is possible. Impact resistance, the ability to withstand loads, and the overall lifespan of the product must be considered.
There are gypsum products you should consider for its enhanced durability. They should only be installed in areas that get a heavy amount of traffic consistently.
If you have a project that calls for sound insulation, gypsum boards with acoustic properties will be the best option. They are designed to reduce sound transmission - making them perfect for walls and ceilings in areas where you need to control the noise. For example, if you are building a theater space or a recording studio room, it will be vital to consider such gypsum products.
At PermuTrade, we believe that materials like gypsum are a worthy commodity. If you are planning on using it for construction purposes, you can use it for any project you desire. We will be able to help you find the right gypsum that will fit your budget, preferences, and needs.
We also work with other physical commodities as well. If you are interested in these for your construction project along with gypsum, we are interested in hearing from you.
Even with the latest developments in scanning and milling restorations, the use of gypsum based materials is essential to your laboratory processes. An in depth understanding of these materials and their behavior is part of the foundation of success in your business.
It may seem like everyone should be familiar with gypsum usage, but a good review is still beneficial to everyone. First, let’s cover the chemistry:
CaSO4.2H20 – CaSO4.1/2H2O + 1 1/2 H20 Raw Gypsum Plaster or Stone Excess Water Calcium Sulfate Calcium Sulfate Di-Hydrate Hemi-HydrateThe raw product, either taken from the ground or produced as a by-product of the energy industry is then heated and ground to a powder. In this process, excess water is driven out of the material creating its overwhelming need to get it back!
1. Store Wisely – Remember that all gypsum products should be stored in low humidity cabinets or areas and preferably in sealed containers. An open 50lb box left on the floor with the liner pulled back is an open invitation for material ruin. “The first half of this box worked great, but now it has problems. I think I got a bad batch”. Chances are that you have a bad storage system in a humid environment. Wall bins are great for access but should not be filled so full that the material sits prior to use, for days on end exposed to the atmosphere.
2. Measure Twice, Mix Once – Measuring accurately and mixing properly are just as critical. 100gr of plaster is not the same in volume as 100gr of die stone. Manufacturers create defined physical properties for each gypsum product. When you change the parameters of Water/Powder Ratio and Mix Time, you also change the other physical properties. If a particular product is not behaving as you would like, it may be the wrong product for your application or you may not be following the instructions correctly. Review the procedures on a regular basis to make sure that you have not drifted from the intended use or handling instructions. Also seek your manufacturer’s technical advice for your application.
3. Clean is Best – If your Clients walked in right now would you be embarrassed to have them in the lab? How would you react if your physician’s medical lab looked like your dental lab? Make sure that your areas and your equipment are clean and in proper working order.
4. Beware of Interactions -Gypsum that has already set acts as a catalyst when in contact with unset gypsum and causes changes in the set and working times. Don’t mix gypsum stones and plasters in the same bowls used for phosphate investments. The phosphate can keep the gypsum from setting properly.
5. Less is More – Other chemistry issues can also affect you. Excessive disinfectant solution or water can give you unset or powdery gypsum at the surface. Make sure that your impressions are clean and only slightly damp before you pour. Excessive use of alcohol based surfactants or debubblizers will also give you surface issues like softness or chalkiness.
6. Eliminate Impression Headaches – Impression materials and their use can be problematic. Do your best to match the linear expansion of your stone to the linear contraction of the impression materials that you receive. Stones generally range from .05% to .3% expansion. Impression materials are being reported from .% to .4% contraction, so you can see there is a great possibility of mismatch. If your doctors are constantly complaining of tight crowns you may want to check for a mismatch problem before you change the ratios in your investment materials.
Always check the impressions for problem areas. Tares, voids, unset material, air traps on marginal areas or impinging on the tray (tray show through), all are sources of case failure and should be pointed out to the doctor and noted on the prescription, along with the Dr.’s indication to continue or re-take the impression. Pouring and pulling can damage what you first see; show the doctor the problem in the impression prior to the pour.
7. Presentation Counts – Sloppy gypsum work leaves your practitioner clients with the image that you are a sloppy, non professional laboratory. See that the model work and articulations are smooth, free from excess gypsum and clean. There should not be articulating ink, fingerprints or other unnecessary markings left on the casts when returned to the client.
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