Epoxy resin as a joint material has numerous advantages and is particularly popular outdoors. However, the Harz is not completely free of disadvantages. We show these together with alternatives.
In a nutshell
- sensitive to solvents
- toxic fumes before curing
- high susceptibility to errors during deployment
- higher acquisition costs
- more difficult application
Table of contents
- Costs
- mixing
- Danger from toxic fumes
- Effort when deploying
- sensitivities
- Alternatives to epoxy resin
- frequently asked Questions
Costs
epoxy resin for Put is significantly more expensive to purchase and use than cement-based joint mortar. When grouting a floor, for example, sums between 200 and 400 euros per square meter must be expected. For mortar it is only 40 to 80 euros.
On the one hand, this can be explained by the different material costs. On the other hand, the effort associated with spreading plays a decisive role in professional grouting.
Tip: A price comparison between different suppliers and epoxy resin variants makes sense in any case. In addition, it should be assessed whether epoxy resin is really the better and more durable choice for the respective area in the long term.
mixing
Epoxy resin consists of two components, which makes the preparation more complex compared to mortar. It is important:
- Mix in stages
- exact mixing of the components
- Make corrections quickly
- Repot before spreading
- brisk work
Only as much epoxy resin should be prepared as is required for grouting in the shortest possible time. Since the mass hardens quickly and has to be absolutely homogeneous, the working time is considerably longer. The material should not stand longer than ten to a maximum of 15 minutes between mixing and application. Leftovers on the edges or on the spatula must also not be reused.
Even with small amounts of epoxy that are not fully mixed and yet applied, the entire joint can leak and suffer. Sections may remain soft, appear to be significantly more sensitive to mechanical or chemical influences and as a result have a significantly reduced service life. Subsequent corrections, like the removal of epoxy resin residues or smears, are strenuous, time-consuming and possibly even expensive.
If something goes wrong when applying or inserting, the mass must be removed immediately, without leaving any residue and thoroughly.
Danger from toxic fumes
After curing, epoxy resin is harmless, durable and, depending on the product, even food safe. These advantages do not apply when mixing and applying in the liquid state.
When working with it, the components emit toxic fumes that can be harmful to health. It is therefore crucial to protect yourself accordingly. This includes the following means and measures:
- Ventilate the area consistently
- wear gloves
- Use safety goggles
- use breathing mask
Notice: It is important to avoid direct skin contact and inhalation. Toxic substances continue to be emitted during drying and curing. The windows should therefore remain open and all utensils used should be cleaned or disposed of after drying.
Effort when deploying
Grouting with mortar is usually very easy and, with a little practice, can also be done privately without any problems. This can mean significant savings. In addition, it is carried out in a short time. Even when commissioning a company, the costs are therefore low.
The situation is different when grouting with epoxy resin. Even the repeated mixing of small amounts with the transfer known as repotting into a fresh container requires significantly more time. The introduction is also more complex and therefore more time-consuming due to the necessary cross movement when filling. At the same time, it is advisable to have the grouting done by a professional, which in turn increases the price.
Tip: If you want to do the spreading yourself, you should try a practice piece first. The movements must be precise and routine in order to ensure that the joints are completely closed and at the same time not to smear tiles or stones.
sensitivities
Epoxy resin for joints is resistant to a variety of influences. These include temperature fluctuations, mechanical and chemical loads. However, upon contact with solvents or products containing solvents, the material may dissolve or become severely weakened.
In areas where such means must be used, one of the possible alternatives should be used.
Alternatives to epoxy resin
The cheaper and most versatile alternative to epoxy resin for joints is still Cement-based grout. Cement is also resilient and easier to work with.
Another option is polyester resin. The acquisition costs are lower and here, too, it is easier and less time-consuming to use when mixing. In damp rooms or wet areas, silicone or acrylate can be considered in addition or instead.
Which joint material is best suited always depends on the conditions on site and the actual influences. These conditions sometimes differ significantly between the different areas. That becomes clear when a driveway with the pool or the kitchen is compared. Professional advice and, if necessary, implementation is therefore often recommended for optimal results.
frequently asked Questions
Yes, there is now a large selection of different tones for the joint material, so that desired contrasts as well as harmonious transitions can be created.
Epoxy resin does not pose any danger when it has hardened and dried. Direct skin contact should only be avoided when mixing, grouting and drying. On the other hand, continuous and good ventilation must be ensured to prevent inhalation.
If there is inhalation or direct skin contact with the wet mass, irritation, redness, swelling, pain and a rash are to be expected. With fully cured and dried epoxy resin, there are no such problems.
Despite the high price, epoxy resin is very popular as a joint material. This can be attributed, among other things, to its versatility and decorative appearance as well as its remarkable durability.
