Having used this particular material to insulate a 120-square-meter terrace which was in terrible condition, I will analyze the process, because it’s easy to draw the wrong conclusions!

So, the terrace was cleaned, the old insulation of the slab was removed, and it was washed with a pressure washer. It was left to dry well, and then it was ready for use. Before the final layer of db block, a good sweeping of the area where the coating would be applied!

The product spreads relatively easily, needs good mixing, and can be applied in stages, i.e., one or two buckets at a time and continue the next day or later!

For the 120 square meters, I needed 12 buckets to have a good thickness of insulation!

The temperature of the house immediately increased noticeably in the middle of winter, something I knew from the start, because the store where I bought it recommended applying a polyurethane terrace waterproofing on top, with the required primer, as in the summer the heat would be excessive!

After applying the elastomeric, everything was really perfect! The temperature improved noticeably! It was tested for a whole year, with extreme heat in the summer and snow in the winter!

Essentially, it’s like I did external thermal insulation with five different materials, labor, and waiting time—all of which you can do yourself if you dedicate time and have the will to work!

At the moment, it is in its 4th year of application and I am completely satisfied with the results!

The product is wrongly named DB Block because it is multifunctional and sound insulation is just one of its uses. Personally, I would call it MultiBlock. For those who consider it expensive, obviously they haven't understood its USE and what the user saves with it. Firstly, it is used for filling and especially for small-scale leveling of different surfaces where it is not possible to use 3-5 cm of cement due to thickness, making it ideal for covering houses with different floors that do not require the doors to be "lifted", for example, old apartments that in the past had mixed tiles, wooden floors, marbles, etc. Secondly, it is ideal for covering old floors on balconies and terraces where moisture causes most of the problems that the apartment below has to pay for because the moisture passes through the awnings. Thirdly, because it can be used vertically, it eliminates the need for fine plaster. You stock it directly. So, when it comes to energy upgrading, especially in houses from the '70s, '80s, '90s, the money you save by using 5 different materials and methods to protect floors, terraces, ceilings, and walls, mainly from moisture, secondarily from expansion-contraction and cracks (which may also require mesh reinforcement that DBB does not need), and finally for basic insulation surface before stocking/cementing and final painting, the product is worth the money and more. The work required is the same or even less than that of traditional cementing. So if you want it ONLY for sound insulation, then look for something else, but if you want it as a PROTECTIVE BASE before applying other materials, then get it and you will save time, money, and the need to match different heterogeneous materials. That's what you pay for, the all-in-one. It doesn't do everything perfectly, but it combines them to a good extent, with better moisture insulation than a cement-like or plain elastomeric material. In the end, if you don't want a "sandwich" of 2-3-4 different materials, you just use this one and you save time, effort, and money. It is not suitable for all jobs, but for the ones it is, it is very good. It is for specific scenarios and applications. In terms of material cost, you should calculate around 800-1000 euros depending on the thickness (e.g. for a 100 sqm apartment + balconies or a terrace) to do a proper job with a thickness of 2-5 mm. I don't consider it a lot of money for something that is supposed to last at least 20 years until the next renovation, especially when cement-like materials cost 15+ euros per kilo and do ONE job, not five. This is also the main reason why I used it throughout the house, because I didn't have to mix different materials, which means I saved countless extra hours of work, meaning time, money, and effort. Don't listen to ignorant people who say it doesn't provide any sound insulation. There is NO material that can block ALL sounds. I have soundproofed my entire house inside and out, top to bottom, with different materials. To achieve this, special and different materials need to be used, as is done in recording studios or cinemas. One single material or product can never achieve this, because each sound has its own frequency. It depends on the needs, such as noise from the street, impact noise from upstairs or downstairs apartments, machinery, depending on the case. Do not forget something VERY basic: When the craftsmen have to apply 3-4 different materials one after the other, they will CHARGE extra for these different applications, so more money for labor. Not to mention that you will have to wait for days for one material to dry before the next layer is applied. While with just one DB Block, the cost of labor decreases. The plasterer applies it, it dries in 2 days, and then the painter finishes it off. In one bucket of 15kg, it covers 6 square meters for a good job. Let's see the cost then. If I used elastomeric roll 1-2cm thick for sound insulation and gravel before pouring cement screed, I would need around 10+ euros per meter ONLY for materials and double the labor (assuming that labor costs are the same, around 6-7 euros per square meter). So it cost me 50% LESS in materials+labor and ADDITIONALLY I have BOTH moisture insulation and better thermal insulation compared to elastomeric, for which I would need a 3rd and 4th hand and additional materials costing 10-15 euros per meter in labor. CONCLUSION: If you want to do 5 jobs with one application and save half or more in additional materials, time, and labor, it is WORTH it 100%.

So the product does the following:
- Fills gaps between joints/different floors
- Levels uneven floors
- Replaces cement screed, especially where it is not possible to apply cement screed or self-leveling due to thickness
- Provides elasticity to the substrate before applying adhesive for tiles or flooring
- Eliminates the need for mesh and expansion joints required for cement screeds and some self-leveling compounds
- Provides GOOD moisture insulation
- Provides SOME sound insulation (cuts certain frequencies)
- Eliminates the need for gravel primer on existing surfaces (e.g. tiles/marble/mosaic)
- Provides satisfactory thermal insulation
- Is very easy to apply and allows for many mistakes until it dries

Ideal for:
- Old houses with different floors before installing a unified floor
- Bathrooms (walls, ceiling, floor)
- Balconies that cause moisture on the lower awning
- Buildings where another building will be attached in the future with a party wall
- Basements that have moisture coming from the ground
- Ceilings where the iron bars have come off due to concrete failure (first it needs to be primed and cemented)
- Alternative to inverted roofs (which are the worst, especially polystyrene-asphalt membranes - AVOID)
- Perimeter areas on rooftops for access hatches
- Perimeter areas between the floor and the skirting board up to a height of 20-30cm
- Interior/exterior walls next to gardens and flower beds that generate moisture
- Building corners exposed to weather conditions, resulting in cracks in the plaster

Therefore, with all these characteristics, I believe that it has already paid off its investment and I am just waiting to see how it withstands over time as a material.